DEN - LIS

$337 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 8/5. 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
$619
Overall average: $800
Lufthansa
Tue 4/7Tue 4/28
DEN - LIS • 1 stop
Cheapest one-way
$337
Typical prices: $432-$808
Multiple Airlines
Wed 8/5
DEN - LIS • 2 stops
Top airlines
Cheapest • from $619 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Denver and Lisbon. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $851 (round-trip)
Shortest trip • 11h 52m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 29% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Lisbon!
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

Tue, Apr 7 - Tue, Apr 28
Lufthansa Logo
4:05 pm - 1:40 pm
DEN
-
LIS
14h 35m
1 stop
Lufthansa Logo
6:45 am - 7:29 pm
LIS
-
DEN
19h 44m
2 stops
$619Lufthansa
Tue, Apr 7 - Tue, Apr 21
Lufthansa Logo
4:05 pm - 1:40 pm
DEN
-
LIS
14h 35m
1 stop
Lufthansa Logo
6:45 am - 3:40 pm
LIS
-
DEN
15h 55m
1 stop
$629Lufthansa
Tue, Apr 7 - Tue, Apr 28
Lufthansa Logo
4:05 pm - 1:40 pm
DEN
-
LIS
14h 35m
1 stop
Lufthansa Logo
6:15 am - 2:20 pm
LIS
-
DEN
15h 05m
1 stop
$630Lufthansa
Tue, Apr 7 - Thu, Apr 16
Lufthansa Logo
4:05 pm - 1:40 pm
DEN
-
LIS
14h 35m
1 stop
Lufthansa Logo
7:25 am - 3:40 pm
LIS
-
DEN
15h 15m
1 stop
$635Lufthansa
Sun, Apr 26 - Mon, May 11
Turkish Airlines Logo
8:25 pm - 9:55 am
DEN
-
LIS
30h 30m
1 stop
Turkish Airlines Logo
4:45 pm - 6:25 pm
LIS
-
DEN
32h 40m
1 stop
$652Turkish Airlines
Sun, Apr 26 - Mon, May 11
Turkish Airlines Logo
8:25 pm - 3:35 pm
DEN
-
LIS
36h 10m
1 stop
Turkish Airlines Logo
10:55 am - 6:25 pm
LIS
-
DEN
38h 30m
1 stop
$653Turkish Airlines
Tue, Apr 28 - Tue, May 12
Turkish Airlines Logo
8:25 pm - 11:20 pm
DEN
-
LIS
19h 55m
1 stop
Turkish Airlines Logo
5:55 am - 6:25 pm
LIS
-
DEN
19h 30m
1 stop
$654Turkish Airlines
Thu, Apr 16 - Fri, Apr 24
Turkish Airlines Logo
8:25 pm - 11:20 pm
DEN
-
LIS
19h 55m
1 stop
Turkish Airlines Logo
11:00 am - 6:25 pm
LIS
-
DEN
38h 25m
1 stop
$655Turkish Airlines
Tue, Aug 18 - Wed, Aug 26
Turkish Airlines Logo
8:25 pm - 11:20 pm
DEN
-
LIS
19h 55m
1 stop
Turkish Airlines Logo
10:55 am - 6:25 pm
LIS
-
DEN
38h 30m
1 stop
$658Turkish Airlines
Sat, Sep 12 - Tue, Sep 29
Turkish Airlines Logo
8:25 pm - 11:20 pm
DEN
-
LIS
19h 55m
1 stop
Turkish Airlines Logo
5:55 am - 6:25 pm
LIS
-
DEN
19h 30m
1 stop
$664Turkish Airlines
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.

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 January, where tickets cost $626 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,243 and $1,118 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 3 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$337
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly with an average 10% increase in price.
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 $337 for a one-way ticket and $619 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 KLM?

    The two airlines most popular with KAYAK users for flights from Denver to Lisbon are Delta and KLM. With an average price for the route of $984 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $686 and an overall rating of 7.8.

  • 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 9435 reviews
8.1Crew
6.6Food
7.1Entertainment
7.7Boarding
7.3Comfort
Airline reviews

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

10.0 ExcellentAnonymous, Feb 2026
DEN - RSW
Read more United Airlines reviews

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

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.

IAH to Istanbul was outstanding across the board. The flight from Istanbul to Male was good, not great.

the cabin was kept too hot. couldn't sleep as a result

It was an amazing experience. Flight crew's service, hospitality, and the food were phenomenal. I don't think I'd want to try any other airline company after this. I would definitely recommend to friends and family. Thank you Turkish Airlines !

Business Class pods are horrible. If you're petite, you might be able to sleep on the uncomfortable seat and bed. Crew and food are fantastic.

I have travelled many times on Turkish, but they always board at least 30-40 minutes past the stated time. If informed properly, passengers can choose to spend more time in the .lounge instead of standing around by the gate waiting to board. The new lounge at DFW was a big disappointment. The aircraft itself was a shock. In the past I have flown this sector with regular business class seating configuration of 1-2-1, The 2-3-2 seating is very disappointing after paying such high prices for tickets. The DFW to Istanbul segment was slightly better, but the Istanbul to Delhi segment was no better than premium economy. I will try to travel more on airlines which give business class passengers more value for their money.

Good overall. Seat spacing a bit tight between IST and ISB.

Excellent staff despite some trying passenger situations. Very impressed with their good attitudes and kindness.

Crew were unfriendly, touch screen for movies didn't work very well, seats were tight and uncomfortable

After arriving in Istanbul, the transit information on the electronic board showed a tight departure time, and the gate changed in the middle, making it difficult to make it on time.

Typically good service onboard but baggage delay in airport was significant

Departed Palm Springs over an hour late because there’s only one gate, and it has always delayed by the arriving and departing flight to Toronto and the arriving flight from Vancouver.

I checked a bag and there was only one agent to assist all customers with any issues.

I want to thank Carlos at the Miami AC desk - he was amazing and went over and above to help us out. Thank you Carlos and all the best to you!!! You made our faith in AC feel great! Sincerely, David Cubitt

Flight was canceled due to mechanical issues. After a considerable wait in the queue, Air Canada customer service was very helpful to get us on another flight. I am disappointed to report our rescheduled flight is for three days from now. Three days of extra expenses and inconvenience is unacceptable.

Extremely disappointing. My original Denver–Vancouver–Bangkok itinerary was cancelled due to a crewing issue. I was not proactively supported and had to drive back home after already reaching the airport. Communication was poor throughout, and attempts to contact customer service resulted in being on hold for nearly three hours without reaching anyone. Instead of being rebooked on the same direct routing the following day, I was rerouted onto a much longer itinerary via multiple cities and airlines, which resulted in arriving approximately 30 hours later than scheduled. At Denver airport, there was no visible Air Canada representative available to properly assist. Ground staff offered no real support beyond directing passengers to a phone number. There was no clear communication, no ownership, and no meaningful customer care during a major disruption. The final journey involved three flights instead of the original two, significantly increasing travel time and stress. Overall, the handling of the cancellation and lack of customer support was unacceptable. What could have been better? Clear communication during the cancellation Accessible customer service (phone support that actually answers) Proper in-person assistance at the airport Rebooking onto a comparable routing rather than a significantly longer one

Great setup on both flights except the last flight we got condensed dripping all over me in the last 20 mins of the flight

The last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

Again, we were rerouted all the way to Zurich and had a longer journey than expected.

Was delayed at every point/ connection. Luggages missing for 5days. Had no medications for diabetes and high B/p. when bags where finally delivered on the 30th, the insulin and ozempic were no longer patent, as the ice pack had since dissolved and the authenticity of the med is now questionable, since they must be refrigerated. Please have them refund my bag fees. I should sue them for all the inconveniences caused to me.

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.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Excellent service; they helped me reschedule so I can fly in an earlier flight

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

We paid for Business Class seats, but system did not have us and they were not available.

Very please with the seating that the Kayak staff booked for us!

Worth every penny to upgrade to BC. Treated and felt more like First Class

I paid for a very expensive Business Class seat to and from Cairo Egypt from Charleston SC. There was partnership from states to London using American Airlines. That leg was amazing. The British Airlines leg was a joke. They used the standard no leg room 3 by 3 seats. A tray was put on the middle seat. The trip was 5 hours, from London to Cairo, thus my BC purchase. There was no screen proving tv/movie options, only a small device plug. The fold down tray and the bag of peanuts were typical of normal short run flying. The one toilet was located in the galley. We all got to know each other well. This was my first and last trip with British Airlines. I now understand why they would NEVER give me a seat chart so that I could make a selection.prior to departure. It honestly would not have made a difference, there were less than 50% of occupied seats. Apparently everyone got the memo but me. I have never felt so cheated as with that trip, got to so another going back to London, yeah. I will be sending a letter to customer service and asking for a refund. I will be photos comparing the two BC legs. OH, one more thing. The FC ticket holders got bulkhead and exit row seats. I know they had to be thrilled

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

Late! Late and late! More than 1hr 30mn. This sucks when it is the last of a 4 flight journey. I missed my dinner! Which is not nice on Valentine’s Day!!! But better than the gate next to us, the poor Chinese people were rebooked to the next day flight. AA had to call security as it became very heated with the passengers! It was a mess at DFW that afternoon/evening. I wish they had some food for the people who travel as part of international journey. Indigo does it in India and it is fantastic.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

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

Information on your arrival and departure airports