DEN - LIS

$331 Find Cheap Flights from Denver to Lisbon - Compare and Save

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 10/15. 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

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Everything you should know

Cheapest round-trip
$700
Typical prices: $668-$976
Air Canada, Lufthansa
Wed 10/28Wed 11/4
DEN - LIS • 1 stop
Cheapest one-way
$331
Typical prices: $518-$645
Multiple Airlines
Thu 10/15
DEN - LIS • 2 stops
Top airlines
Cheapest • from $704 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Denver and Lisbon. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $672 (round-trip)
Shortest trip • 11h 44m (one-way)
Insights
Insights
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Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 14% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 33% price drop
Most popular
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, Oct 28 - Wed, Nov 4
Multiple Airlines Logo
11:20 am - 6:55 am
DEN
-
LIS
13h 35m
1 stop
Multiple Airlines Logo
5:00 am - 3:35 pm
LIS
-
DEN
17h 35m
1 stop
$700Multiple Airlines
Tue, Nov 10 - Tue, Nov 24
Lufthansa Logo
4:15 pm - 1:30 pm
DEN
-
LIS
14h 15m
1 stop
Lufthansa Logo
5:00 am - 3:35 pm
LIS
-
DEN
17h 35m
1 stop
$704Lufthansa
Tue, Oct 27 - Fri, Nov 6
Lufthansa Logo
5:15 pm - 1:30 pm
DEN
-
LIS
14h 15m
1 stop
Lufthansa Logo
5:00 am - 3:35 pm
LIS
-
DEN
17h 35m
1 stop
$712Lufthansa
Wed, Dec 2 - Sun, Dec 6
Icelandair Logo
3:40 pm - 12:50 pm
DEN
-
LIS
14h 10m
1 stop
Icelandair Logo
2:00 pm - 6:00 pm
LIS
-
DEN
35h 00m
1 stop
$716Icelandair
Tue, Nov 10 - Tue, Nov 24
Multiple Airlines Logo
5:01 pm - 9:45 pm
DEN
-
LIS
21h 44m
1 stop
Multiple Airlines Logo
6:30 am - 7:59 pm
LIS
-
DEN
20h 29m
2 stops
$716Multiple Airlines
Tue, Nov 10 - Tue, Nov 24
Air Canada Logo
7:00 pm - 8:55 am
DEN
-
LIS
30h 55m
2 stops
Air Canada Logo
12:50 pm - 6:03 pm
LIS
-
DEN
36h 13m
2 stops
$719Air Canada
Wed, Oct 14 - Wed, Nov 4
Air Canada Logo
11:25 am - 9:20 am
DEN
-
LIS
14h 55m
1 stop
Air Canada Logo
11:20 am - 6:03 pm
LIS
-
DEN
37h 43m
2 stops
$719Air Canada
Wed, Oct 14 - Wed, Nov 4
United Airlines Logo
11:25 am - 9:20 am
DEN
-
LIS
14h 55m
1 stop
United Airlines Logo
5:00 am - 1:40 pm
LIS
-
DEN
15h 40m
1 stop
$722United Airlines
Tue, Oct 27 - Fri, Nov 6
United Airlines Logo
2:16 pm - 8:10 am
DEN
-
LIS
11h 54m
1 stop
United Airlines Logo
11:20 am - 1:49 pm
LIS
-
DEN
33h 29m
2 stops
$726United Airlines
Mon, Sep 21 - Sun, Oct 4
Icelandair Logo
4:40 pm - 1:50 pm
DEN
-
LIS
14h 10m
1 stop
Icelandair Logo
3:00 pm - 7:00 pm
LIS
-
DEN
35h 00m
1 stop
$733Icelandair
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.

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 October.

Flight prices are below average for this route right now.

Flights to Lisbon from Denver usually cost between $712 and $1,085 in October.
The lowest price found in the past 5 days was $700 on Multiple Airlines (Oct 28-Nov 4).

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 February, where tickets cost $630 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,332 and $1,189 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 14% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low season

January

Cheapest flight

$331
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 18% 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 5 days, the lowest price for a flight from Denver to Lisbon was $331 for a one-way ticket and $700 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 $941 and an overall rating of 7.8, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $883 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
Turkish AirlinesOverall score based on 4461 reviews
7.8Crew
7.5Entertainment
7.5Food
7.3Boarding
7.3Comfort
Airline reviews

Average at every level . Poor entertainment selection. Boarding was very poor and disorganized. Flight was late by one hour .

6.0 GoodDave, Jul 2026
EWR - IST
Read more Turkish Airlines reviews

Average at every level . Poor entertainment selection. Boarding was very poor and disorganized. Flight was late by one hour .

Spent over $20k on for business class tickets from DFW. They used a very old Boeing 777 with old Business class cabin which was unclean and stained seats. On a route they normally operate the modern Boeing 787. The cabin heat was set to hot for 11 hours. On the IST LHE route the business class experience got even worse. They operate an even older Airbus A330 where trip was falling apart, seat recline did not operate and the whole experience left us hugely disappointed. Next time we likely will shift to better quality product which stands up to their hype. Turkish need to relook at their fleet plans and not use their worst assets of perceived week markets such as Pakistan.

It was crowded… the bathrooms dirty and smelly. The seats have been made even smaller.

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.

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

This flight was in the air when the national power outage happened on 28 April 2025 in Spain and Portugal. As a result Lisbon airport was closed and the flight was diverted to Porto. There were no phones, internet or ATMs working and the Turkish Airlines ground crew in Porto were trying to find alternative transport to Lisbon (by bus). This did not materialise until late in the evening. The Turkish Airlines ground crew suggested that passengers may find their own way of getting to Lisbon. That in itself is a failure of Turkish Airlines, but understandable as there were no means of communication. The Turkish Airlines ground crew also said that any expenses insured for travel to Lisbon will be refunded by the Airline through their website. Unfortunately, I could find no way to travel back to Lisbon other than to hitch hike with an Uber driver. Because no systems were available and no credit card payment possible I paid the driver 140 Euros in cash with no receipt as systems were down. I arrived at my Lisbon hotel at 23:30 (flight was scheduled to land at 12:30). Upon contacting Turkish Airlines for compensation they are not willing to do anything as I do not have an invoice for my expenses. They do not even consider the 10 hours of delay and inactivity on their part as a reason to provide any sort of curtesy towards me. I find their behaviour appalling.

Ordered Vegan meal - it was ok, but not exceptional. Seat ok row 39 middle section aisle. Nearly full flight - crew was busy but they did the best they could. There was a USB A port at the seat. I listened to my own music and only looked at flight information. One nice thing was the connection information was made available in the screen.

One of the worst check in process at the DIA as well as the boarding counter Changed seat at the last minute and assigned middle seat while I paid for window seat. Requested many times but to no avail . horrible customer service and very poor process Requesting refund for seat that was changed last minute

Pretty standard for long haul international flying. Food was fine, tv/movie selection was great, wifi did not work at all, crew was pleasant enough.

Flight was late to take off Plane broke down Had to move everyone to another plane Told we weren’t going to LGA but Newark Also told we would be taken to NY But United lied and we ended up at Newark at 2 in the morning Horrible experience. And the experience of trying to get compensation from United is just as bad. They could not care less about their passengers Never again!

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

I needed internet for critical matters and it never worked.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

The entertainment they offer could use some games, and maybe they could add some cookies to the snack menu. And the automated messages are a bit repetitive. But it was comfortable temperature wise and the seats were comfortable. The crew is very polite and helpful

This planes staff was top tier. Everything went great and had a great flight home.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

It was a short flight so I was expecting too much

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

Multiple delays and flight cancellations meant that I arrived five and a half hours late at my destination. There was limited communication from the airline. The airline left my checked bag at my departure city and stopped tracking it almost immediately. The airline has made no apparent effort to return my bag despite filing a report, and has provided no communication or ability to check on the status of the bag.

Food options were ok but the actual meal was terrible. On my way back, they simply said that there was no vegetarian option; somehow they struggled to get one meal and did not give me any breakfast at all which in my opinion was terrible. Never had such an experience in the recent years.

1didnt have wheel chair I ordered wheel chair in my ticket flight

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

We had a very long delay. First the inbound flight took a while, then maintenance, they “fixed it” to then do boarding and leave the gate, and waste a lot of time to have to go back to the gate and eventually deplane. Had to wait for a new aircraft, wait for a gate, and do the whole thing again. Instead of leaving at 9:50am we left until past 1. I could’ve not woken up at 5am, or spend some more time with my family if they gave more grace period of time between flights to give some time in case of any issues. But they have to make all and every dollar possible

Comfortable seats and movies entertainment available. Better experience than the flight from Toronto to Denver.

It was delayed by almost 90 minutes and that messed up our plans but it was beyond UA’s control that is what we heard

Terrible experience. Flight was delayed then canceled. They had no clue how to rebook us. Had to wait in line to take to a gate agent for 2 hours. Absolutely terrible from start to finish.

Most expensive flight… and they are trying to pinch more and more money out of you. Baggage, snacks, pillows, headphones… — so many airlines do far better than this… surely a national airline can do better?

Overcharged by either United or Air Canada. Abuse of access to my credit/debit card.

Very, very tight legroom. They must’ve jammed in an additional few rows of seat seating. Denver to Munich was the least legroom I’ve ever had on any flight, let alone a multi hour international journey. I will not take that flight again.

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

Food is too little (in volume) and too spicy.. There are no snacks in the back of the plane in between meals.

We had a 1 1/2 hour delay before we left Denver. When we arrive to Frankfort, they didn’t announce that people with connecting flights to exit the plane first. My next flight was already boarding when we we taxiing in to the gate. I waited another 10 minutes to get off the plane. I had to run to catch my next flight. I mean run! I made it with one minute to spare, but my luggage did not. My luggage came two hours later on a different flight.

Both flights were delayed and we missed our connection. Our second flight was delayed 3 times. I have always had great service and never any problems with my flights on Lufthansa. My last two flights were, unfortunately, awful. I fly quite often to Germany and have had better luck with United than Lufthansa.

Excellent staff and flight experience. Would rather that I had upgraded to Premium Economy for extra space, but I will know to do it next time.

It was my first experience in business class. It was everything I expected and more. Service was impeccable, food was delicious and I felt rested once I arrived to London

Sorry, I’m not a fan of United. The seats are just too cramped and uncomfortable if you are traveling very far.

Zero legroom or space in economy. Flight was delayed into Munich causing a missed connecting flight and other missed bookings. :(

Plane was very delayed. US agents unhelpful in connection flt and in seating. No real info given on delay.

Work being done at DIA made it difficult to find BA desk.

I’ve never been on a trans-Atlantic (or Pacific) flight where the seats don’t recline—not even a little. I asked my seat mate when BA starting doing this and he said “Oh, a few years ago.” I couldn’t sleep, with my head falling forward waking me continuously, and came off the plane incredibly stiff. I booked a Premium Economy seat to get a more comfortable seat, which was worse than most basic Economy seats I’ve ever booked.

The gate agent made me check my carry-on in Denver, even though I've traveled all over taking this case on the plane. Beware folks. Food in Premium Economy was quite good - excellent blanket! Flight attendants on the Heathrow-to-Budapest flight on 3-27-2026 were quite snappy. I got a frown when asked to unscrew the water bottle cap for me (I had a cast on my right arm). Also woke up right when they were handing out biscuits. She had given my rowmates one and was in the process of giving water when I asked for a biscuit. She scolded me and said, "You snooze, you lose". She did give me one, but I thought that comment was uncalled for.

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

Flight was delayed. Though I checked in with BA live chat three times, our special meals were not provided.

Was 3 hrs delayed and my poor friend I met in Barcelona was waiting at airport for 3 hrs. Dallas airport was awful

Late in leaving the US. Late in arriving in UK. 2 plua hous on ground in UK before leaving. Late in arriving in Spain. Didn't get our bags until the next night.

Comfortable, pleasant staff, quiet, good entertainment, food, drinks. Better than American (flight back) when we were crammed in and staff sometimes indifferent.

The perfect jet stream back saved over 1 hour in the air.

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

Information on your arrival and departure airports