DEN - LIS

$255 Find Cheap Flights from Denver to Lisbon

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Lisbon departing on 5/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Lisbon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Lisbon.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Lisbon.
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Everything you should know

Cheapest round-trip
$572
Typical prices: $637-$886
KLM
Wed 2/25Wed 3/4
DEN - LIS • 2 stops
Cheapest one-way
$255
Typical prices: $498-$846
British Airways
Tue 5/5
DEN - LIS • 1 stop
Video guide: How to find cheap flights to Lisbon
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Top airlines
KLM
Cheapest • from $572 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 28% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Denver to Lisbon (DEN-LIS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Lisbon that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Lisbon

Wed, Feb 25 - Wed, Mar 4
KLM Logo
10:50 am - 8:00 am
DEN
-
LIS
14h 10m
2 stops
KLM Logo
5:00 am - 4:39 pm
LIS
-
DEN
18h 39m
2 stops
$572KLM
Tue, Feb 17 - Tue, Feb 24
Lufthansa Logo
5:45 pm - 10:50 pm
DEN
-
LIS
22h 05m
1 stop
Lufthansa Logo
5:00 am - 6:03 pm
LIS
-
DEN
20h 03m
2 stops
$574Lufthansa
Tue, Feb 17 - Fri, Feb 27
Lufthansa Logo
4:15 pm - 11:30 pm
DEN
-
LIS
24h 15m
2 stops
Lufthansa Logo
6:10 am - 10:05 pm
LIS
-
DEN
22h 55m
2 stops
$575Lufthansa
Mon, Apr 20 - Mon, May 4
British Airways Logo
5:15 pm - 11:10 pm
DEN
-
LIS
22h 55m
2 stops
British Airways Logo
6:45 pm - 4:30 pm
LIS
-
DEN
28h 45m
1 stop
$576British Airways
Tue, Feb 24 - Fri, Mar 6
Delta Logo
12:12 pm - 9:00 am
DEN
-
LIS
13h 48m
1 stop
Delta Logo
10:00 am - 10:21 pm
LIS
-
DEN
19h 21m
1 stop
$577Delta
Mon, Feb 16 - Tue, Feb 24
Delta Logo
6:10 am - 8:00 am
DEN
-
LIS
18h 50m
2 stops
Delta Logo
5:30 am - 10:48 pm
LIS
-
DEN
24h 18m
2 stops
$578Delta
Mon, Apr 20 - Mon, May 4
British Airways Logo
5:15 pm - 11:10 pm
DEN
-
LIS
22h 55m
2 stops
British Airways Logo
6:45 pm - 10:40 pm
LIS
-
DEN
34h 55m
2 stops
$579British Airways
Sat, Feb 21 - Mon, Mar 2
Multiple Airlines Logo
5:30 pm - 9:20 am
DEN
-
LIS
32h 50m
1 stop
Multiple Airlines Logo
3:55 pm - 4:00 pm
LIS
-
DEN
31h 05m
1 stop
$580Multiple Airlines
Tue, Apr 14 - Mon, Apr 20
British Airways Logo
6:40 pm - 3:35 pm
DEN
-
LIS
13h 55m
1 stop
British Airways Logo
6:45 pm - 4:30 pm
LIS
-
DEN
28h 45m
1 stop
$581British Airways
Wed, Apr 29 - Mon, May 4
British Airways Logo
6:40 pm - 5:55 pm
DEN
-
LIS
16h 15m
1 stop
British Airways Logo
6:45 pm - 4:30 pm
LIS
-
DEN
28h 45m
1 stop
$582British Airways
Booking Insights

KAYAK's insights & trends for Denver to Lisbon flights

Get data-powered insights and trends into flights from Denver to Lisbon to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to Lisbon
Find cheap flights to Lisbon

Planning a trip from Denver to Lisbon? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

How much is a round-trip flight from Denver to Lisbon?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Denver to Lisbon departing in February.

What is the cheapest month to fly from Denver to Lisbon?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Lisbon, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Lisbon is November, where tickets cost $658 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,350 and $1,134 respectively.

How far in advance should I book a flight from Denver to Lisbon?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Lisbon, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to Lisbon, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$255
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Denver to Lisbon

When to book flights from Denver to Lisbon

Are your dates flexible? Find out the best times to travel from Denver to Lisbon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Lisbon

  • How can I get from the Lisbon Airport (LIS) to the city center?

    The Lisbon Humberto Delgado International Airport is about 12min from the heart of the city. There are various ways that you can get from the airport to downtown Lisbon. This includes the public bus or subway. You'll get there quicker on the bus than on the subway. On the bus, it will take under 20min, and on the subway under 40min. Hiring a Lisbon taxi is another transportation option. The ride will last around 20min depending on traffic.

  • Where can I park my car at the Denver International Airport (DEN)?

    There are a couple of garages at the airport where you can park your car while you're vacationing in Lisbon. The garage is just a short walk from the terminals. You'll save money, however, if you choose to park in the economy parking lot right behind the airport garages.

  • Are there any banks or ATMs at the Denver International Airport (DEN)?

    If you need to withdraw some money for your trip, there is a Canvas Credit Union in the Jeppesen Terminal. There are also ATMs in a few locations around Jeppesen Terminal.

  • What can I do while waiting on my plane to leave Lisbon Airport (LIS) to go back to Denver?

    You can enjoy the benefit of relaxing in an airline lounge while you wait. Some lounge amenities include comfortable seating, complimentary beverages, televisions, and books or magazines for reading. You can also kill time dining at a well-known restaurant such as Burger King, KFC, or McDonald's. If you still have some souvenir gifts to buy, there are numerous retail shops at the airport. There are designer shops like Burberry, Guess, Michael Kors, and Boss, and gift shops that sell Swarovski crystals, sunglasses, toys, or perfumes.

  • What is the cheapest flight from Denver to Lisbon?

    In the last 3 days, the lowest price for a flight from Denver to Lisbon was $255 for a one-way ticket and $572 for a round-trip.

  • Do I need a passport to fly between Denver and Lisbon?

    Yes, you’ll need a passport to travel to Lisbon from Denver.

  • Which airports will I be using when flying from Denver to Lisbon?

    When flying out of Denver you will be using Denver Intl. You will be landing at Lisbon, also known as Lisbon Humberto Delgado.

  • Which aircraft models fly most regularly from Denver to Lisbon?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Denver to Lisbon?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Denver and Lisbon, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Lisbon from Denver?

    Washington, D.C. is the most popular layover city among KAYAK users traveling from Denver to Lisbon.

  • Which is the best airline for flights from Denver to Lisbon, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to Lisbon are Delta and United Airlines. With an average price for the route of $959 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $970 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Denver to Lisbon?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Lisbon.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Lisbon?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Lisbon from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Lisbon?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Lisbon with an airline and back to Denver with another airline. Booking your flights between Denver and LIS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Lisbon?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Lisbon from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to Lisbon

  • If you're taking a plane from Denver International Airport (DEN) to Lisbon Humberto Delgado Airport (LIS), you'll have to switch planes. Your layover could be from 35min to over 24h. Cities that you could stop in include Toronto, Montreal, Chicago, or Washington, D.C.
  • Should your flight going back to Denver be delayed, you can take a nap in the lounge area of the Lisbon Airport. Known as the Living Spot, this quiet area is located in Terminal 1.
  • When you land at the Lisbon Humberto Delgado Airport (LIS), you can stop by the Tourist Information Desk to get information about local attractions, hotels, city tours, and transportation.
  • Passengers who have a real early flight or passengers driving to Denver to catch a flight might choose to stay the night at the Westin Denver International Airport Hotel. This hotel is a short walk from the terminals and offers amenities such as a hot tub, indoor pool, and fitness center for guests to enjoy.
  • There are currency exchange centers throughout the Lisbon Airport (LIS). You'll find currency exchange centers in Terminal 1 before and after security, in the arrival hall, and baggage claims. There are also ATMs all around the Lisbon Airport. You'll find several near the departure and arrival halls.

Reviews of the top 5 airlines serving from Denver to Lisbon

 
See real verified KAYAK customer reviews for airlines flying from Denver to Lisbon. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Lisbon? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9217 reviews
7.7Boarding
7.3Comfort
7.1Entertainment
6.6Food
8.1Crew
Airline reviews

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

2.0 MediocreSid, Dec 2025
DEN - BZN
Read more United Airlines reviews

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was late - I was downgraded from first class to coach

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

Flight was good but there are way to many announcements for credit cards etc.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Terrible. They wouldn't allow me on my flight on the 14th..

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

My, Syed Zawar Hussein Shirazi frequently flyer membership number was not included on my boarding pass from O’Hare to Istanbul despite my reminder to the attendant at check in. Further she forgot to give me my boarding pass form Istanbul to Lahore and she needs to improve her customer service, please 🙏

Everything about that day was great I was happy with how things went as a first time traveling with the airline thank you for all that you’ve doing by taking us there to our various destinations thanks.

They oversold the tickets by one which was my ticket so I didn’t have a ticket till last second

Not good. I was supposed to be in Mint but got in economy class

Service was slow and checked bag was off last evening when flying business

Turkish Airline canceled our tickets in the very last minute, with our luggage and everything else, all prepared and good to go. It’s clear that they sold the tickets for better money to someone else. Bad, Bad, Bad business!!!

Awful seating. Bad food. Staff only have one bottle of water and no cans.

it was like a banya -so hot... They did provide a great experience with special food. one toilet broke midflight In general it was a peaceful and relaxing flight - for business class it was good.

Chicago to Istanbul was a much better experience than I expected since I’m more accustomed to Qatar Airways business class. The business lounge in the Istanbul airport was amazing - loved the lockers and phone charging stations, and the bathroom was a spa experience in itself. The onward leg from Istanbul to Karachi was utterly disappointing. Terrible plane, and I felt like I was in economy - the seats don’t come near to lying flat and the food was mediocre. What a sad downgrade - it isn’t as though the ticket on that leg was cheaper. So, on that front, there’s no contest with Qatar airways.

Second leg of Turkish Airline with Indigo is disaster for following reason. 1) You have to carry your cabin bags through ladder to boeing 777 because it was parked somewhere in parking lot and was not given a gate to board passengers and this seems to be people traveling to and fro from those flights and is not issue with flight itself. 2) I choose non vegetarian food on Turkish portal way ahead of checkin to entire trip, However the Indigo flight gave me random veg food saying they code veg food code from Turkish. 3) Indigo did not served any alcoholic beverages stating some weird reason which is non nonsensical. 4)Indigo have TV screens in front of you but it displays nothing except "Welcome Onboard" with annoying white black ground in dark flight. This is the most stupidest and annoying part because you are held hostage for 7 hours and only thing you could do is stare back at white screen which does not have entertainment package or even flight tracker. Such a shame.

The plane was delayed substantially due to a mechanical problem, that being said, the airline was very fair with providing a meal coupon for us. I would rather arrive late on a mechanically sound plane than the alternative. The food served in the plane was just awful, however and I recommend a new catering company.

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

Nothing specific. Cabin temperature was too high for some reason.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

I tried both on line and by calling the Customer Service line to arrange for a special meal as i have food intolerances. I was under the impression from your service representative that I was successful. I was not. I cannot eat spicy foods and get very ill if i eat bell peppers. I could not eat either menu choice and no special meal was actually ordered. ( your representative tried to order it for a flight that did not have meal service!!! - found this out later). Your wonderful cabin crew managed to put together a fruit, salad, roll and cheese tray for me so I had something to eat. WHY WOULD YOU SERVE SPICY FOOD, WITH NO MILDER OPTION,ON AN INTERNATIONAL FLIGHT???

Crew was professional and great, flight was clean. However food was pathetic. I ordered a Hindu meal assuming no meat but they served chicken. Need to be very specific- Hindu meal should be categorize as Vegetarian - no meat or egg. Or it should be specific that we are serving meat.

Late flight Delays Poor service Poor staff Worst airline ever

Ground staff and cabin crew were excellent. Flight was perfectly on time. Zero issues.

Even after a delay, getting off the ground, thanks for keeping me safe, the airline made certain that my connecting flight was rebooked to get me to my final destination. It was actually rebooked twice, and my luggage still managed to meet me. The airline gave me a credit for food and beverage to be used at the airport vendors, regretfully, the credit did not transfer to my final boarding pass. Oh, well…

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

Getting the boarding passes between the BA and AA apps was very clunky.

The airline was not clear about a new departure time so we got to the airport early anyway. The flight left early which was great because of weather. The check in process was very easy and staff were friendly and helpful. The crew was great and our flight was very good.

Awful it always is unfortunately is the only way to fly direct to london

I travelled in business class and was disappointed by lack of service, curt and borderline rude time of the crew and to top it off, all of my luggage was delayed. It was like pulling teeth to even report the missing luggage and recover it the next day from the airport.

Plane was extremely delayed, but not all of it was BA fault (some was). Worst part was lack of room - this had as much space as an Allegiant flight. I thought transatlantic usually gave you an extra inch or two, but not this one. Entertainment system sporadically worked and didn’t have great options. Overhead bins are old and tiny, not as good as aunties new planes.

Boarding was poor. All groups called immediately one after the other resulting in a long queue in the jetty/jet bridge. Seats were very hard and and did not recline on a 4.5 hour flight. No food was available. Plane was cold. There was no entertainment.

The cramped seats are cruel and unusual punishment and may violate the Geneva code.

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

Everything you need to know for your flight from Denver to Lisbon

Information on your arrival and departure airports