Find cheap flights from Denver to Portugal

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DEN — Portugal
Jul 30 — Aug 61
Round-trip
1 adult
Economy
0 bags
From?
To?
Sat 7/30
Sat 8/6

Search hundreds of travel sites at once for deals on flights to Portugal. Bundle your flight + hotel and save!

Good to know

Low season

January

High season

June

Cheapest flight

$285

Average price round-trip

$1,222

Good deal round-trip

$915

Good deal one-way

$449
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 33% increase in price.
Flight from Denver Intl to Lisbon Humberto Delgado
(avg. price over the last 2 weeks)
or less
or less

Top tips for finding cheap flights to Portugal

  • Book at least 3 weeks before departure in order to get a below-average price.
  • High season is considered to be January, November and December. The cheapest month to fly to Portugal is January.
  • Morning departure is around 17% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs - booking Portugal flights

Top 5 airlines serving Denver Intl to Portugal

Scores according to KAYAK customer reviews
8.0
SWISSOverall score based on 9244 reviews
8.2Boarding
7.9Comfort
8.6Crew
7.7Entertainment
7.9Food
Airline reviews

Very cramped space. Not enough toilets. Entertainment options were good. Food was good. Service was fast.

Read more about SWISS

Very cramped space. Not enough toilets. Entertainment options were good. Food was good. Service was fast.

Pros: "Great organization, very efficient"
Cons: "Bag fees were not made clear on Kayak or Swiss website, seats on Edelweiss A320 we’re spaced too close together for my legs, though was not a problem on the 777."
Pros: "Water provided."
Cons: "My fly connection did not appear in screens, confusing, stressing. Fly left more than one hour after schedule, no explanation, still arrived on time"
Cons: "Wider seats,"
Pros: "Crew was fantastic"
Cons: "Boarding was delayed by 30 minutes. May have been beyond the crew control."
Pros: "I loved that every seat had a pillow, blanket and head-phones waiting. The movie selection was great, too.The service was excellent. Love having metal utensils, and not plastic."
Cons: "No fault of the airline, but when passengers recline their seat backs all the way, it's very difficult for the person behind. Two vegetarians meals were offered - which is ok, but I was unsure if either had sufficient protein; plus the side dishes were all starches."
Cons: "They asked me to pay for my luggages. It is strange"
Cons: "Missed flight. Misplaced checked bag. Filed complaint with Swiss."
Pros: "The crew was excellent, very good food, good entertainment"
Pros: "Amazing crew/ food/seats very comfortable! Very relaxing ride !"
Cons: "It was perfect !"
Pros: "Crew was very attentive, information from the cockpit was enough to let us know but not disruptive"
Cons: "Boarding was one long line that other passengers in the airport had to walk through. This was difficult for passengers with kids and those with needed special accommodations Ike wheelchairs, canes etc"
Pros: "This was a very short flight. They gave you a great little snack and drink. Was a very smooth flight and the crew were very friendly and welcoming."
Cons: "Could not check in online because the system was down."
Cons: "Pleasant overall experience"
Pros: "-"
Cons: "Old plane, rude crew"
Pros: "Tasty lunch with good service in business class. Modern comfortable plane."
Cons: "Flight delayed by a few minutes."
Pros: "All good, just perfect and friendly crew. Great aircraft (B777)"
Pros: "Flights attendant proficinal , food was great , first time experience ice cream on airplane served. Seats are comfy and wide , much space between seats compare with other airlines."
Cons: "Nothing"
Cons: "2 hours delay!"
Pros: "Staff"
Cons: "Delay"
Pros: "I got a surprise upgrade to Business Class where the service, food, and comfort were all excellent."
Cons: "Flight was delayed for almost an hour while we were on board. (ultimately not the airline's fault), If I hadn't been in Business class, it would have been very uncomfortable."
Pros: "The Plane was modern, they had food / drinks for us, and overall the flight experience was excellent."
Cons: "Extremely crowded no place to wait, Split Airport has too many planes coming in/out and not much space for passengers."
Pros: "Direct connection from San Diego to Zurich. Fresh, crispy and delicious bread on the flight!!"
Cons: "The food and service was better than that of American airlines, but no comparison to food and service of any Asian airlines (including Singapore Airlines, Thai Airways, Japan Airlines, ANA, Korean Airlines). The Edelweiss brand is too much based on outdated stereotypes and Heidiland. Nobody in Switzerland walks around dressed and make-uped like the stewardesses of Edelweiss air."
Pros: "clean, very new plane friendly staff"
Cons: "delay"
Pros: "Seats were comfortable, food was ok."
Pros: "Swiss Air the best!!!!"
Pros: "Very friendly crew, good legroom in economy, excellent meals."
Cons: "None"
Pros: "Chocolate"
Cons: "Staff not very friendly. Very small seat. Worn out plane."
Pros: "Good clean service that Swiss is known for."
Cons: "There’s never overhead space for carryon. Ever since they went to lift, I have had to put my luggage in a row near the rear, making me wait until the plane almost complete Disembarks before able to get the bag."
Cons: "The flight was 1:20 hours delay so it arrived at midnight to Vienna. Even they refused to accept all the cabin bags on board. Very disspointed with Swiss. I’m flying twice time a week and I never experience so frustating experience like Swiss Air"
Pros: "Crew was great. Flight kept time. Safe trip. Thank you."
Cons: "The on board duty free did not have ample change, so I had to forfeit $3 in change.. On top of that they secrectly charged $10 extra on my card after my flight! I already got the ticket and paid extra luggage- what is the extra charge for?? The lady at extra luggage tried to overcharge me as well! Had to refer her to your website! I need this excess charges reversed. I demand an explanation!"
Pros: "Entertainment"
Pros: "Every time I go back to Greece I always fly Swiss. Always on time, good times, clean, and helpful crew."
Cons: "The bar between the seats is not going up all the way"
Cons: "Too narrow seats."
Cons: "Have to take a bus to the plane for boarding. Terrible cold sandwich wrapped in a partly open loose paper bag wrap. Short flight I realize, but that was bad, especially in business class."
Cons: "When I booked the flight I thought it was El Al so I did not order kosher food (as all El Al food is kosher). I only found out later that it was Swiss Air and I was unable to get a kosher meal."
Pros: "Comfort of the flight ,very friendly staff"
Cons: "Nothing"
Pros: "Friendly staff"
Cons: "This aircraft should be retired long time ago"
Cons: "The crew at the check-in was rude, confused, and ignorant, and flight attendants were forgetful and ignorant."
Pros: "I appreciated the big meal, dinner, about 2 hours into the flight. Nice to have real metal utensils, not plasticware, to eat with. The 'breakfast' for the overnight flight was more of a throwaway: muffin, granola bar, fresh fruit cup. Nice to get wine, or maybe beer(?), with dinner at no extra charge, served from regular wine bottles, not individual-serving containers."
Cons: "$35 per flight leg (Lufthansa policy) to choose seats was distinctly annoying. I didn't know when I booked the flights, so the surprise $70 add-in (for round trip definitely would have figured into the price/schedule choice in the first place."
Pros: "Wonderful staff and service. Multiple snack and meal service very much appreciated. I love Swiss Air."
Cons: "I found the movie selection a bit limited for such a long flight."
Pros: "The staff was friendly and accommodating. I LOVE that we were given ice cream and chocolate - only wish I'd been given more chocolate. They came by with drinks often and made sure that we were well hydrated."
Cons: "The boarding process took a long time. I had to go through customs, then at the gate they checked my passport again and the line was VERY long. The process just did not seem to be managed very well. There were issues with the tv monitors; however, the crew handled it very well. I wish we had been given an option with the calzones - I don't like red peppers or tomatoes, and was not offered another option."
Pros: "Friendly and attentive. The check-in person was willing to check to see that I had a reclining seat. Friendly and accommodating attendants good wine offered in economy, water offered several times during the 9:30 hour flight. Pilots changed Flt altitude to accommodate for turbulence."
Cons: "Very little not to like on this flight."
Pros: "Too short to rate but good overall"
Cons: "Nothing"
Pros: "I was upgraded! Delicious lunch."
Cons: "Boarding was awful. It was not claear where the line is for the business class and for the econom class."
Pros: "Short flight was fine."
Pros: "large variety of content"
Cons: "system didn't work the whole flight on 2 seats"
Pros: "the food was good and i like not having to deal with private screening from tablets."
Cons: "The space between rows are uncomfortably narrow (and I am a short person). It also does not help when the attendants would not want to disturb a sleeping but have no problem allowing us to eat off a tray with our forehead touching the back of the seat in front. This happened to me on the entire journey on Swiss from Miami to Zurich to Cape Town. It is almost a health hazard not being able to move and forget about trying to even use a laptop because when the person in front recline her seat, you have no room to even type (and my laptop was only a 13 inch Mac.) I am a million miler on United and this is one of the most miserable flights that I have taken. I also don't like the fact that we cannot get seat assignments until 23 hours before departure- not even for preferred travelers."
Pros: "Staff were courteous and there was abundant food and beverage service."
Cons: "No child activities were distributed by the crew (like they did for our return flight)."
Pros: "Most of the crew was great with the exception of curbside check-in in Denver."
Cons: "Curbside needs to stop chasing cash tips and do their jobs. If they focused on that tips would be easy to come by. The curbside attendant that took my bag didn’t even bother to check my id. He asked me my name and asked where my destination was. I told him Cincinnati as a layover then LaGuardia where he said that was wrong. He then proceeded to print a boarding pass that wasn’t mine and load my bag into the conveyor. Not 5 mins go by when I realize what happened I wound up having to go to special services to rectify the situation. Which ultimately consisted of me waiting another hour in LaGuardia to get my bag. Please delta have these curbside handlers actually want to do their job and stop chasing cash tips."
Pros: "Crew was very pleasant. Boarding and deplaning was smooth and easy!"
Pros: "Crew was friendly and efficient."
Pros: "Availability of WiFi, a charging port and media options puts Delta a step (or two) ahead of their competitors. The professionalism of the crew, as well as the complimentary food/beverage options are also excellent."
Cons: "Not the airlines fault, but my 6’4” frame doesn’t fit very well in a middle main cabin seat."
Pros: "We arrived eventually."
Cons: "Flight delayed three hours. Payed extra for an earlier flight. Very disappointing."
Cons: "Delayed 4 hours"
Pros: "Flight left on time and landed on time"
Pros: "Flight was delayed for more than 3 hours."
Cons: "Could have left on or close to schedule."
Pros: "The service, on time, employees very nice."
Pros: "Crew."
Cons: "Getting to Venice on time. Our late arrival cost me a 90 euro shutle."
Pros: "Comfort + was nice."
Cons: "Had a middle seat between two other men. I was given my seat by the gate. It would have been nice if they placed my more strategically. That might be asking too much but seems reasonable."
Cons: "Choice of healthier snack"
Cons: "Have rhe right to carry at least one luggage per person at no cost. Besides carry on and personal item. Tickets prices and luggage costs are extremely expensive."
Pros: "Good airframe."
Cons: "3+ hours delayed; didn't arrive until 3AM."
Cons: "Seats are so small. Flight was delayed."
Cons: "Denver airport is far too large for there to be such a small security check therefore it took forever and I missed the flight. Delta tried to charge me $1000 for another ticket to Albany and I decided to fly with another airline for half the price instead"
Pros: "Nothing"
Cons: "I bought a ticket thinking i bought it through kayak but I actually bought a ticket through a third party in India. Where no one spoke good English. I called the agency to find out if I needed a Visa for my visit to Australia and the told me no. So when I showed up to the airport I didn’t have the right documents and I MISSED MY FLIGHT. Also the wouldn’t just change my flight and charge me the change flight fee. They cancelled my flight entirely and made me buy a whole new ticket!!! Worst flight experience I’ve ever had and this is not my first time flying to Australia or out of country."
Pros: "Friendly cabin crew. Early am departure. On board entertainment is a great selection of movies/TV etc. Clean aircraft. Comfortable seating. Great flight."
Cons: "Had to wait for the crew from another flight before boarding p"
Cons: "The seats were in bad condition, I was surprised as Delta usually has well cared for interior and exterior airplanes."
Pros: "The flight attendants were all helpful and pleasant. The seats were comfortable. We were provided with plenty of liquids."
Cons: "The landing was pretty tough and we took off almost a half hour late."
Pros: "Very friendly gate attendants helped us fix the problem that our frequent flyer number had not been entered on the boarding pass. This may have been because of the booking co., Just Fly."
Cons: "Would have liked more seat options, like when I book on Delta's website. Didn't have enough advance warning."
Pros: "Food and entertainment was good"
Cons: "The bathroom I used was disgusting."
Pros: "Check in Denver super helpful Gate staff hustled to turn around flight Flight crew excellent"
Cons: "Flight delayed, almost missed international connections"
Pros: "Anything from free WiFi, entertainment, leg room, commentary drinks and snacks. Great service!"
Pros: "Our flight attendant was excellent. Service with a smile."
Cons: "We almost missed the flight sitting right in front of the gate. No announcements could be heard in the gate area and when we asked, they said they were already removing our luggage, Very odd. Food was terrible! Choices were pasta and cold chicken salad. I had the pasta, which was bland ravioli in two bland sauces. I was surprised, because I had experienced better food on recent international flights."
Pros: "The staff was polite and snacks were good (healthy options)."
Cons: "Nothing was terrible, but due to the short flights I assume they don’t worry about having planes with entertainment available."
Pros: "Short flight"
Cons: "In SLC they boarded by row numbers and not zones. Weird..."
Cons: "Engine problems-2 hour delay"
Pros: "Good flight crew"
Cons: "Delayed due to mechanical issues. For 3 hours. No offers for free drink or wi fi. When we finally land we were on the runway for half hour."
Pros: "Great people and crew early arrival nice passengers"
Cons: "Poor Delta DEN counter agent experience. Name on ticket didnt match Delta profile name nor TSA [rofile name. Delta counter agent would do nothing, except blame TSA. Would not check ticket name vs profile name. Happened two consecutive flights. Flight tomorrow morning has no TSA Pre clearance on boarding pass. This will be three consecutive flights. Also seated me next to a person who needed 2 seats to himself. Please never seat me next to a passenger who cannot fit in their own seat. I am switching to SWA."
Pros: "On two of the legs of the trip they notice I was a tall person with long legs and upgraded me to seats with more leg room!! I didn't even ask. Thank you."
Cons: "On the way back there were open seats with extra leg room and I asked the gate attendant if it was possible to switch my seat to one with more room and they said they only could if I paid extra."
Pros: "Crew was nice."
Cons: "The Entertainment sucked. Again I was sitting in comfort class which in theory should buy you more comfort and better entertainment. There was a ton of movies from the 90s and the same movie selection from about 6 months ago when I traveled with them. Also, what is going on, with having to use your own cell phone to watch movies on the plane? Whatever happened to the screens in the backseat of the front seat? I ended up with neck pain from trying to watch a movie on my phone. Delta has become very cheap. It is going into some serious decline."
Pros: "Nothing"
Cons: "Let me just say that I’m a loyal Delta costumer until now. The flight attendants (the two women) were an absolute nightmare. They were so rude and condescending. I was carrying with me my service dog and a bag containing an expensive medication (it couldn’t go on the top bin). Despite being in the comfort class and having the seat next to me empty, we were tight for space. The flight attendants were unreasonable and forced me to put my medication on the top bin despite the fact I had told them it was extremely delicate, that it that to go upright, and that I needed to keep it with me. They did not listen and pressured me into giving them the medication. The medication could have easily gotten broken. Thankfully it didn’t but this is no way to treat a human being."
Pros: "Entertainment system is awesome and similar to what I usually see only on international flights."
Pros: "Crew was the best!"
Cons: "I really dislike the snack boxes. Snacks need to be more like a small sandwich or grapes, cheese and nuts. Not all that packaged stuff."
Pros: "Staff pretty friendly. Plane clean. Ran on time. Good communication. Even though shorter flight, had movie entertainment option. Before flight we had a flat tire so missed our flight. Agent extremely helpful getting us on another flight."
Pros: "Staff was courteous, flight uneventful but that's a good thing!"
Cons: "Long flight, difficult to sit that long (3 hrs plus)"
Pros: "It's a nice, comfortable flight with plenty of entertainment options."
Cons: "The coffee on board is lousy, but I'm not sure that is much of a surprise."
Cons: "I fly Delta quite often, and am usually pleased with their service, but the morning of June 23 was terrible. I got to the airport in Denver at 5:30 am for a 7:30 am flight to Atlanta, and the line to check a bag was about 40 people long. I waited 55minutes to check my bag, as they kept moving the ski priority people, and people in danger of missing their flight, to the head of the line. There were obviously not enough Delta workers on staff to process all the flights at that time."
Pros: "The moviea"
Cons: "The time of night"
Pros: "The flight attendants were so nice and accomadating. Even came by to refill our waters! I've never been on a flight with such friendly flight attendants!"
Pros: "Reassignment was pretty easy."
Cons: "No accommodations were available for overnight stay due to delayed flight."
Pros: "Upgraded to first class"
Cons: "No entertainment system, no power outlet...for first class this is disgraceful"
Cons: "I drove 5 hours to get to the airport and unfortunately ended up delayed because of traffic and slow shuttles from parking. I arrived 1 hour before the flight, but security was so slow I didn't get to the gat until 10 minutes before arrival. There were no gate agents present and despite banging on the gateway door and other Delta agents at the adjacent gate, no one helped me. I can only surmise that they had already given away our seats, which were award tickets, GAINED BY BEING A LOYAL DELTA CUSTOMER. The gate agents were unapologetic and useless at rebooking, and I bought a ticket from Southwest instead. As i was trying to get to my sister's wedding, and repeatedly told the agents this, their behavior was particularly abominable. DELTA, YOU'VE LOST A LOYAL CUSTOMER."
Cons: "Seats too close - I'm not that tall and my knees were jammed against the seat in front of me."
Pros: "Was able to get on a flight after ours was cancelled. Delta was in scramble mode and their gate staff worked hard ot deal with a frustrated flying populaiton"
Cons: "After paying for first class round trip airfare, we were given seats in coach in the rear of the plane, in spite of empty seats (plenty of them) in first class and economy comfort."
Pros: "Plane was clean and staff were friendly"
Cons: "The snack options were quite average"
Pros: "Flight attendants were lovely"
Cons: "Nothing"
Cons: "Seats can be better."
Cons: "Flight late more than 3-4 hours on Frankfurt. So upset. I will never and ever try with Frankfurt again. I bought shortest way ticket to pay more money but unfortunately flight late about 3-4 hours. Money trap. I would love to have another free flight or I will post the tickets on facebook, Twitter and etc... To make a terrible flight reputation."
Pros: "The crew."
Cons: "The airplane arrived over 45 minutes late."
Pros: "It was long flight but everything was just right. Will use this company again."
Cons: "Food was OK, could have been better."
Pros: "Good leg room in aircraft and comfortable seating."
Cons: "My checkedin baggage did not reach the final destination and was delayed by 24 hours. Further, when my baggage did reach, one suitcase was damaged. Did not expect this from Luftansa."
Cons: "The flight never took off after 3 hours on board on the tarmac. There was poor communication from the staff at the airport and no compensation from Lufthansa."
Pros: "best take off and landing I’ve ever experienced. 2 meals for an 8 hour flight and all the red wine I could drink!"
Pros: "Everything exceeded expectations. Lots of food, space, drinks, and excellent flight crew. Excellent video selection."
Pros: "Flight delayed leaving, but arrived on time"
Cons: "Food was so-so. Didn’t know wireless headphones were not compatible with inflight movies. Flight attendants seemed grumpy"
Pros: "Nothing"
Cons: "I have been transatlantic for forty years on various carriers. Without a doubt this was my worst flying experience ever."
Cons: "Flight was delayed twice."
Pros: "This flight is usually fully booked but there happened to be an empty seat next to mine which was much appreciated"
Cons: "Nothing"
Pros: "I like the Aircaraft - A350-900 and service"
Cons: "You cancelled my flight & I lost a whole day of mt trip!"
Pros: "movie selection"
Cons: "I missed my lufthanza connection"
Pros: "Flight staff were kind and friendly"
Cons: "I could not push my seat back and the man in front of me pushed his back leaving me very little room"
Pros: "The bathroom downstairs"
Cons: "Late arrival inMunich, rush to connection and my luggage didn’t make it"
Pros: "Great service. everything was on time, or early. overall pleasant experience."
Pros: "Visa for India was not checked in Denver. Landed in Frankfurt and discovered that the visa was expired. Stuck in Frankfurt for 3 nights until new visa was issued. No babes the entire time I was in Germany. Arrived in Mumbai after paying the $350 US change fee and no bags. Bags finally arrived on Monday at 9AM Without clothes, toiletries and medications for 6 nights. Now I am delayed and will probably have to pay rebuke and fare change to extend my stay here."
Pros: "Lufthansa is extremely efficient, and the staff is very helpful all while being cheerful and kind. The planes are new and clean, everything was a notch above typical economy carriers. Well done!"
Pros: "1 hor 30 minutes instead of 2 hours 15"
Cons: "Worst food ever, and zero entertainment"
Pros: "Anna, she was the supervisor at the check in desk at Denver airport. She was super helpful and very nice. She went above and beyond to help me out with the issue i had... but everyone else i went to get help from were not at all helpful (3 other people), sour face, they probably hate their job. Movie choices on flight to Munich were great. Smooth flight, I didn't lose my bag so that was great too!"
Cons: "Rude crew member. One bad apple ruins the whole bunch. I pre selected my sest at check in on line but got different seat. Not sure why but that was uncalled for. Boarding was 35 minutes late because flight arrived late also. The lady that boarded us was nice and funny."
Pros: "Friendly crew. Flight left on time"
Pros: "Crew was excellent. Plane was very clean."
Cons: "Seats in economy are miserably uncomfortable especially for a flight of this many hours."
Pros: "I liked that if I asked for something the crew would get to me rapidly. Extra leg room."
Cons: "Boarding process: just a lot of confusion. Inflight crew service poor: the was no time to have any brain reaction when they would pass by with coffee or anything...and when I asked for coffee the answer for a gentlemen of the crew was: coffee already passed by. Really!!?? Make sure that +$1200 are spent well. Rude or inattentive crew members shouldn’t be on flights that are that long...I had to nsist to have a miserable cup of coffee. Movie selection was poor. USB port didn’t work. Shame on you!"
Pros: "At least Lufthansa has a little bit more leg room."
Pros: "The best in-flight service I have ever had on the Lufthansa flight from Denver to Munic!"
Cons: "Couldn't reserve a seat, even 24 hours in advance because web checkin was turned off. Ended up in the middle of the middle on both directions."
Cons: "We were charged a rebooking fee by Lufthansa when customs searched luggage causing us to miss connecting flight"
Pros: "Timely."
Cons: "Seats are small, no entertainment, food was below average."
Pros: "the crew are exellent"
Cons: "Entertainment options were not too good. The flight should have more American sitcoms and more Hindi options."
Pros: "The entire experience was great. Easy check-in, boarding, on time, friendly service, good food, good movies, and overall a really nice atmosphere for such a long flight. Would recommend this Flight to anyone."
Cons: "Nothing"
Pros: "The overall feeling of this flight was 'relaxed'...after getting over the fact, that this was a huge (two story) airplane. Short flight from Denver to Frankfurt...only 8 hours:)"
Cons: "I would have loved to be offered eye shades and ear plus, since most passengers watched movies and i wanted to sleep:)."
Pros: "Flight was on time comfortable good crew clean and upbeat"
Cons: "Boarding"
Pros: "Great service, crew attentiveness and economy comfort. Movie and music selection was good."
Cons: "Slightly larger food portion"
Pros: "Good flight good seats smooth ride."
Cons: "Boarding was not organized."
Pros: "Good job keeping up on food and beverages. Entertainment was great. It was a long flight but was manageable with great service"
Pros: "United is a good partner to Lufthansa. I like United. It was a quick flight, but a good one."
Pros: "Nice crew"
Cons: "Lack of leg room!!! After my bicycle box was inspected they failed to secure my bike the way I had it in the box. Bike was flipping around in box. Bent rear brake calipers. Bent brake hoods. Rear skewers were uncoupled. No way to treat a $10,000 bike! Very upset!"
Pros: "Pleasant crew."
Cons: "Annoying kids in seats behind us :( Not enough leg room for someone over 6 feet tall."
Pros: "Good flight good staff. Captain explained the route which is nice."
Cons: "No negatives"
Pros: "I've flown on many different airlines since I was 10 years old and hands down this Lufthansa flight was the best and smoothest flight I have ever experienced. First of all, the plane was very comfortable and had good leg room. The flight staff were all extremely courteous and attentive. There was one point where I was reading in the dark and the crew member asked if I wanted the light turned on to read! Normally I don't sleep on flights, and the same crew member asked if I wanted ice cream since I don't feel like sleeping. The crew seemed to have this magic ability to make the flight more comfortable without the passenger having to even think about it, or try to ask for extra service. All of the crew were just very outstanding and organized throughout the entire flight, they were all generally very helpful and kind. By the time I got off the 14 hour flight, I didn't feel even the slightest bit tired or anxious, I was able to spend time with my friends in Budapest upon landing and stay out till 2 am without having to sleep or rest because the flight was so good."
Cons: "Rude (American) passengers not keeping the "curtain down", when it was time to rest, and being very chatty. Also baby crying, but this is inevitable, it happened to all of us, when we had small babies."
Pros: "Great crew members, service, and flight."
Cons: "Seat (43A) in economy class in Airbus 330 is not great for oversea flight unlike I flew in LH 747-400 in the past, it does not fit 6+ ft tall people. I could not stretch my legs at all. My knee keep hitting next seat at front of me. Hello Lufthansa, are you listening?"
Pros: "The plane stewardesses were actually really efficient (German style). Because of being on the waiting list to get on the plane I couldn't get a seat next to my partner so they did the biggest math exercise to put us together. Props to them"
Cons: "The flight overbooked (I still don't understand this concept, since is basically selling twice the same seat, right? Is that even legal?) Also the system was down, so no check-in online = the biggest line at the airport, it took me more than 1 hour to check-in and drop my luggage, all to get there and the ground force lady (the rudest person alive) tell me that I had no seat available, that she was going to put me on the waiting list... WHAT? I bought my ticket already, waiting list? Well, to say that I highly doubt that I'll book with Lufthansa again."
Pros: "The food was very good. The service, the preciseness."
Cons: "I didn't like the entertainment, there should me more options for movies in English and Arabic."
Cons: "They cancelled the flight and did not help at all for rescheduling."
Pros: "Seats had extra legroom which was very nice."
Cons: "Screens were on by default and hard to figure out how to turn off. Ads are very annoying."
Pros: "Yes made sure mask was in place"
Cons: "No"
Pros: "Most people were so relaxed and pretty easy going about the whole thing"
Pros: "Flight was short"
Cons: "Could have not delayed the flight 3 times."
Pros: "N/a"
Cons: "Flight and crew scheduled on time, better service and compensation for wasted time."
Pros: "Quiet , comfortable cabin and crew was quick to board everyone"
Cons: "We did not board until 2 hours after original schedule"
Pros: "Nothing extraordinary, just solid positive experience from checking in on my phone thtough disembarking"
Cons: "I like the convenience of the built-in multifunctional screens (like on Alaska flights) that AA are lacking"
Pros: "We didn’t crash and die. That’s the only positive."
Cons: "Before we boarded I listened to a couple described how they always went ahead in line at boarding because no one ever stopped them. They described how they waited until group 3 was called and then went right through. While we were waiting, we watched them do it again. If you need to cram people into tiny spaces to be profitable, then you cannot allow them to make it worse by putting back their seats. I spent 90 minutes with a seat back jammed into my chest. We were ignored when handing out snacks, probably because we were invisible behind the seats pushed in our faces. It was one of the most miserable flights I’ve experienced."
Cons: "You were out of earphones"
Pros: "We were allowed to board early with my father, who is disabled."
Cons: "Denver airport was a nightmare with my disabled father. We were given a “wheelchair” but no escort through a nightmarish security scene. Airport is terribly designed, lacking clear signage and navigation. TSA was a disaster and no one seemed remotely concerned about my father’s comfort or needs."
Cons: "I never made it... I had a trip interruption and got stuck in Chicago and would of had to wait another full 24hrs to take the flight to Denver. tired and nauseated after being all day at the airport that at midnight, i knew that I couldn't hold off till the next evening, took the next flight back."
Pros: "Flight attendants were very good."
Cons: "Pilots need to do a better job of communicating delays. Especially the ones piloting this particular flight."
Cons: "Checked baggage untimely, causing me to miss the train"
Cons: "We are delayed 7.5 hours dues to mechanical issues with our plane and told we would have to wait or book another flight the following day. American Airlines sucks!!!!"
Cons: "Less boarding groups"
Pros: "Good, cheap flight that gets the job done. No issues boarding, seats were fine. Cannot comment on most things as I fell asleep almost immediately."
Cons: "Would've been nice to have had an eye mask / blankets on a red eye flight..."
Pros: "Not much"
Cons: "Seats that worked"
Cons: "I have changed flights. Been delayed 5 times now. And still haven’t left the USA."
Pros: "The crew was very friendly and accomodating."
Cons: "No entertainment or WiFi at all"
Pros: "There was nothing to like about the way this sudden last minute cancellation was handled."
Cons: "I expected at least an offer of some kind of compensation for the inconvenience. it didn’t and hasn’t happened thus far."
Cons: "The crew was a little late"
Pros: "Crew was nice."
Cons: "Plane was very old (from the 90s?), cabin kept freezing all night. Now my husband's luggage has been lost and we are getting conflicting information on how to retrieve it."
Pros: "The crew on both legs were attentive, especially in helping people with connections deplane in Dallas. Boarding was easy. Checking one suitcase for free was good."
Cons: "the first leg of the flight was delayed. The information about when it would leave kept changing at the gate. I would have appreciated some extra food due to the delay... I was unable to get food in Dallas, which my scheduled layover time would have allowed."
Pros: "Good movie selection, there’s new titles available to see and it’s perfect for flight time from Denver to Dallas"
Pros: "Crew was nice and friendly. Pilots flew great. We arrived a few mins early as well."
Cons: "On the way to Denver from Miami we were on a nice new AA plane with TV entertainment, movies, power, and comfortable seats. On the way from Denver to Miami we were on an old plane with no entertainment and old uncomfortable seats. If this is going to be the case, charge me less up front as well. My daughter had a terrible time for a 4 hour flight."
Pros: "fairly comfortable, crew was helpful"
Cons: "Having to use my phone for entertainment, with no place to plug it in"
Pros: "Had the fortune to sit with a passenger that had a service dog"
Cons: "Takeoff was delayed Two hours and 17 minutes with NO explanation."
Pros: "Comfortable seats, good legroom."
Cons: "Not enough coffee for breakfast."
Pros: "Boarding moved along well, even though there wasn’t special boarding for families with young children. The plane was really comfortable (new 2x2) and the staff was really friendly."
Pros: "Food and entertainment were great"
Pros: "Loved entertainment system need bring wireless headset however they will handout some later in flight."
Cons: "Seats were leather didn't let back air out."
Pros: "The crew was awesome."
Cons: "You guys lost our luggage!"
Pros: "The America flights were all ON TIME."
Cons: "The seats on this particular flight were not as good for my back and they no longer offer pillows to put behind my back."
Pros: "All good, except poor prep on food"
Cons: "As above"
Pros: "Good connection"
Cons: "The flight leg PHL-LIS was the most unconfortable transatlantic trip I ever experienced. The plane was small, tight and no head support made this the worst transatlantic flight of my life, easily comparable to any low cost airline."
Pros: "I like that American offers free movies thru their app but there was a glitch and I couldn't get it to work!"
Cons: "Couldn't get the entertainment app to work"
Pros: "Not much."
Cons: "There are NO ENTERTAINMENT, and I had two flights that were more than 5 hours each. It was not operated by British, it was actually American Airlines."
Cons: "The flight was delayed 9 hours for mechanical issues and they were not able to do anything. Since booking with Kayak neither Alaska airlines or American Airlines would help in getting us an earlier flight and both airlines said they couldn't help after repeated calls. Won't be booking any American Airlines flights throug Kayak again."
Pros: "Quick and easy boarding"
Cons: "Uncomfortable seats"
Pros: "Flight landed 40 minutes early"
Cons: "Due to early landing, no gate available. We literally rode all over the tarmac making room for other planes to maneuver around...and then did not get to a gate until 15 minutes past ORIGINAL arrival time. Also, I booked a premium seat, but there was no more leg room than any other seat. No meal/snack for purchase was even offered."
Pros: "The flight had a delay of 4 hours in Philadelphia. I missed the appointment in Lisbon for which I was flying in the first place. Furthermore, I had purchased the ticket with the intent of flying with British Airways and found myself in a charter from American Airlines. I wish to be compensated for this mistake. Thank you"
Pros: "Boarding and baggage."
Cons: "This was a long non-stop flight from Miami to Denver. Over 4 hours. So I took the plunge and bought first class. I always fly first class on any flight over 2 hours. However, I was disappointed. The food was so-so and insufficient. The drinks were also not enough. The video displays were small and poorly located for the movie. The seats seemed uncomfortable. All and all I have come to expect a better experience from American Airlines in First Class. The ticket was expensive."
Pros: "Getting through security was a lot better than I thought. Also, I had plenty of room and the overall ride was smooth."
Cons: "I just wish that there was a little more room and easier ways to earn miles and entry into the lounge."
Pros: "The Denver airport is beautiful"
Cons: "I will never fly AA again - see below"
Cons: "I had a severe back injury in Denver and they were unable to move my flight up a day to get home and see a doctor. A good friend had to buy me a new flight with his airline miles so that I could get home to relive my pain. I'll never fly American again because of this complete lack of compassion and care for their customer."
Pros: "Food, Service, overall feeling of flight and crew"
Cons: "Leg room"
Pros: "On time. Good crew and nicer flight."
Cons: "Actually no complaints."
Pros: "Friendly service"
Cons: "Snacks"

Hablaron de la posibilidad de reembolso de dinero y lo que reembolsaron fueron solo 41 dólares de los 147 que costaron los dos tiquetes. Un robo total.

Pros: "The seats are comfortable.nice leg room."
Cons: "Boarding on every airplane company seems off. Sitting in seat 6D and I’m in the second to last boarding group. That cheese on the burger pricing for getting on before others is getting old. Be better."
Pros: "Clear communication about delays and boarding, comfortable seats, great service."
Pros: "Nice and friendly crew"
Cons: "None"
Pros: "It was on time and everything went well"
Cons: "They could have offered more water"
Pros: "Good airline, great service, boarding process, on time departure and arrival"
Cons: "No complaints"
Pros: "Pillows, blankets and earphones waiting on the seat and it was a lovely crew. Hurricane Dorian made us late for our connecting flight but we were impressed with the efficiency of a waiting rebooked boarding pass upon arrival."
Cons: "Even with an upgraded seat purchase they were uncomfortable and hard to sleep in. This is an ongoing problem on most airlines. One would think that with technology, a better system could be designed..."
Pros: "Flight left on time."
Cons: "In old section of Lisbon airport, and inadequate space to conduct orderly and efficient boarding Both deplaning and re boarding done via movable ramps and passage to and from exposed to weather (thankfully not raining)."
Pros: "the crew did really made sure we had what we needed."
Cons: "Should have made an announcement that the 3g cellular coverage was turned on. Went on in the middle of the flight and had no idea. My phone was in the overhead bin and I thought it was off. When I landed I had an outrageous fee. Should be given a choice to use it or not."
Cons: "Our flight in Lisbon was scheduled to board an hour before departure. We arrived on-time, went through the line and were then placed in a standing room only area to stand and wait for another 45 minutes before boarding. We were placed near the entrance (I thought to board early as a family) but were later told to join another line when we asked why we sere just standing and waiting while other passengers were walking past us. The communication between staff and between your staff and passengers was poor."
Pros: "Great crew and good seat with enough space."
Cons: "Overall is fine !!!"
Cons: "There was a group of Swiss passengers very noisy and crew did not asked them to behave."
Cons: "Gate location information delayed until last minute!"
Cons: "Not enough space for hand luhggage. Changed gate very short before boarding. No gluten free meal available on board."
Pros: "On time, not expensive"
Cons: "Really uncomfortable seats, no tv"
Cons: "We were just surprised by the charges for our checked bags. Thought we had it all covered, but no!"
Pros: "airlines could have mentioned that the second leg would require going thru security again and would take a very long time and that I should do this immediately after disembarking even though a gate had not yet been assigned. As A consequence of an intensive interview process before boarding the international leg of the trip (initially only two reps processing everyone on the plane for a few minutes each) the plane left the gate late. It also lost another 15 -20 minutes in flight making it 30 minutes late and I missed my connection in Miami necessitating me to spend a night in a motel and finish my flight the next day."
Cons: "Had the crew enabled me to be first off the plane I would have made the connection but I lost an additional 20-25 minutes being seated in the rear of the plane"
Cons: "TAP Airlines stranded us in Lisbon. They were late flying us from Vienna to Lisbon and then canceled our seats on our connection to JFK. Instead, they rebooked us on the next day's flight a full 24 hours after, refusing to rebook us on earlier flights on other carriers. Their customer service was as bad as I've ever experienced. Multiple agents admitted their company is terrible and doesn't care about its customers. The indifference to our situation was surreal. Lesson learned."
Pros: "Food and staff"
Pros: "Always the good attention."
Cons: "The delay of the flight without announcing it"
Pros: "No delays, food was good, crew was overall friendly."
Cons: "The A330 was old, seats weren't entirely in order, IFE was mediocre. Wasn't able to sleep well on the nine-hour overnight flight."
Pros: "The food and flight attendants were very nice and accommodating."
Cons: "I had a 17 kg big baggage and a 7 kg hand baggage and was forced by the hungarian check-in attendant to pay the equivalent of 112 usd. I nearly missed my flight as nobody understood why I had to pay extra since my baggage was under - weight. Outrageous! Will not use Tap Portugal again and definetly won't recommend. Maria Petrita"
Pros: "The crew and the service."
Cons: "The food - horrible... My TV did not work the entire trip."
Cons: "There is only one unusual thing - the flight attendant was poking me to ask if I wanted food as I was clearly asleep and did not want to be bothered. There were still 90 minutes left till landing. Awkward and unnecessary and why in the world would she do that? Let people rest, please. :-)"
Pros: "Service wonderful"
Cons: "Flight Washington delayed. Airport about closes upon Arrival!"
Pros: "Well done...when other airlines offer nothing!"
Cons: "Slight delay in boarding... but arrived on time"
Pros: "The new Business Class is phenomenal! Best seats I've experienced in a Business Class thus far. Too bad the transatlantic flight from New York to Lisbon is too short to enjoy it longer."
Cons: "There is nothing that I did not like, other than that the flight duration was too short. ;-)"
Pros: "Some random charter flight with a 1960sBoeing. Although the ticket said TAP. Definitely wasn't"
Pros: "Complimentary beverages and snacks. Understandable English from the crew about the flight information"
Pros: "Great boarding process, friendly staff, the planes are newer and well-equipped, everything was on time, good food options on the plane"
Cons: "Nothing!"
Pros: "Nothing"
Cons: "Flight was overbooked by over 20 people and even though we got the airport 2 hrs early to check in we were bumped from the flight. Next flight available was not for over 8 hrs later that day. Rude and not helpful employees. No gate announcement when flight was then delayed. Most American size carry one do not fit in overbooked head and was forced to gate check."
Cons: "Excessive baggage fees on 2 connector flights TAP BUT TICKETS BOUGHT SEPARATE."
Pros: "The crew were very friendly and relaxed even though there was a delay."
Cons: "bad checkin. just trying to get more money for baggage.."
Pros: "Quick boarding. Crew is great."
Cons: "Schiphol delays everyone's life."
Pros: "I gave up fighting with you and TAP to recover this error that was made a moment after I booked thinking it was to Brussels. I will think twice before ever giving Kayak or tap my business and blog you both to Facebook."
Cons: "The fact that it is impossible to speak to a human to correct this mistake"
Pros: "Five stars for TAP, good attention of its staff, good food and attention during the flight."
Pros: "Generally good and professional."
Cons: "One washroom was permanent;y dirty because the FLUSH mechanism wasn't performing well. Another washroom was permanently locked - causing higher traffic in the remaining washrooms."
Cons: "Paid for a seat with extra legroom because I'm 6'4". Was given a different seat and still charged."
Cons: "this was a very last minute flight to return home. It was cancelled within hours. I am very disappointed."
Pros: "Roomy, clean, meals included-didn't think airlines did that anymore, very friendly staff"
Cons: "Nothing-no entertainment but this was a short flight so didn't matter to me"
Pros: "The plane was clean. The blanket was unusually large, for a plane blanket, so u could be nice and warm. The food was good and varied. The staff was friendly and every time they spoke to you had a smile on their face, as if happy to see you:)"
Cons: "I cant think of anything. It's a long trip that can be tiresome. So you can tell the airline tries to make it as pleasant as possible ."
Cons: "Being sat in a middle seat. With that being said, it was OK. No problems."
Cons: "They keep us inside the bus trapped for more than 20 min, before boarding, very bad experience."
Cons: "Made me check luggage once about to board and luggage with my medicine never made it to my final destination"
Pros: "Staff and fact that flight was 45mins shorter"
Cons: "CHeck in at Lisbon was messy as they made us get back into a passport control line at the gate even though Everton was already seated. Suggest you do this before we get to the gate. Food was mediocre."
Pros: "No comment on this flight"
Cons: "No comment on this flight"
Pros: "Flight was overbooked. TAP Portugal removed me from the flight without warning (I was already at the airport, with plenty of time to spare), and is now making it nearly impossible to get a refund. Would NOT recommend flying with them."
Cons: "Layover was terrible. Two hours was barely enough to make the connection, because of the passport control line which took forever. In Lisbon airport you need to get out and in through security again when connecting."

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1 stopDelta
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11/2Wed
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$715
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19h 04mDEN-LIS
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2 stopsAmerican Airlines
27h 05mLIS-DEN
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11/7Mon
2 stopsDelta
30h 20mLIS-DEN
$720
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1 stopLufthansa
14h 00mDEN-LIS
11/10Thu
1 stopLufthansa
15h 25mLIS-DEN
$722
10/31Mon
1 stopDelta
19h 35mDEN-LIS
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2 stopsDelta
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2 stopsAmerican Airlines
21h 50mDEN-OPO
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$810
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35h 45mDEN-PDL
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2 stopsAmerican Airlines
27h 05mLIS-DEN
$717
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2 stopsDelta
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2 stopsDelta
30h 20mLIS-DEN
$720
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1 stopLufthansa
14h 00mDEN-LIS
11/10Thu
1 stopLufthansa
15h 25mLIS-DEN
$722
10/31Mon
1 stopDelta
19h 35mDEN-LIS
11/9Wed
2 stopsDelta
24h 41mLIS-DEN
$723
10/25Tue
2 stopsAmerican Airlines
21h 50mDEN-OPO
11/7Mon
2 stopsAmerican Airlines
16h 58mOPO-DEN
$725
10/31Mon
2 stopsIberia
17h 21mDEN-LIS
11/7Mon
2 stopsIberia
18h 48mLIS-DEN
$729
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11h 50mDEN-LIS
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2 stopsUnited Airlines
37h 35mLIS-DEN
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Denver - Portugal Flights

Departure:

Denver (DEN)United States

Return flight deals:

Portugal - Denver

Cabin classes:

$5,522
$3,802
$1,255
$713

Browse origins:

$710

Browse destinations:

$848
$795
$710
$775
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