LIS - DEN

$448 Find Cheap Flights from Lisbon to Denver - 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 Lisbon to Denver departing on 10/26. 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
$697
Typical prices: $779-$1,031
Icelandair
Thu 11/19Mon 11/23
LIS - DEN • 1 stop
Cheapest one-way
$448
Typical prices: $637-$993
Multiple Airlines
Mon 10/26
LIS - DEN • 2 stops
Top airlines
Cheapest • from $697 (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 Lisbon and Denver. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $987 (round-trip)
Shortest trip • 14h 20m (one-way)
Insights
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Insights
When to travel
Cheapest • 18% price drop
Most popular
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Lisbon to Denver (LIS-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Lisbon to Denver 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 Lisbon to Denver

Thu, Nov 19 - Mon, Nov 23
Icelandair Logo
2:00 pm - 6:00 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
35h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 12:50 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
14h 10m1 stop Reykjavik Keflavik Intl
$697Icelandair
Thu, Nov 12 - Mon, Nov 16
Icelandair Logo
2:00 pm - 6:00 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
35h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 12:50 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
14h 10m1 stop Reykjavik Keflavik Intl
$698Icelandair
Thu, Nov 19 - Mon, Nov 23
Icelandair Logo
2:00 pm - 6:00 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
35h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 12:50 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
14h 10m1 stop Reykjavik Keflavik Intl
$698Icelandair
Thu, Nov 19 - Mon, Nov 23
Icelandair Logo
2:00 pm - 6:00 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
35h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 12:50 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
14h 10m1 stop Reykjavik Keflavik Intl
$699Icelandair
Fri, Sep 4 - Fri, Sep 18
Aer Lingus Logo
10:15 pm - 6:15 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
27h 00m1 stop Dublin
Aer Lingus Logo
8:00 pm - 9:35 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
18h 35m1 stop Dublin
$868Aer Lingus
Fri, Sep 11 - Fri, Sep 25
Aer Lingus Logo
10:15 pm - 6:15 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
27h 00m1 stop Dublin
Aer Lingus Logo
8:00 pm - 9:35 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
18h 35m1 stop Dublin
$868Aer Lingus
Fri, Sep 4 - Fri, Sep 18
Aer Lingus Logo
10:15 pm - 6:15 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
27h 00m1 stop Dublin
Aer Lingus Logo
8:00 pm - 9:35 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
18h 35m1 stop Dublin
$869Aer Lingus
Thu, Oct 22 - Wed, Nov 4
Multiple Airlines Logo
6:05 pm - 10:22 amLIS  Lisbon Humberto Delgado-DEN Denver Intl
23h 17m1 stop Toronto Pearson Intl
Multiple Airlines Logo
3:40 pm - 6:20 pmDEN  Denver Intl-LIS Lisbon Humberto Delgado
19h 40m2 stops Reykjavik Keflavik Intl Barcelona-El Prat
$887Multiple Airlines
Wed, Sep 23 - Sun, Sep 27
United Airlines Logo
5:05 am - 3:40 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
17h 35m1 stop Frankfurt am Main
United Airlines Logo
6:00 am - 10:30 amDEN  Denver Intl-LIS Lisbon Humberto Delgado
21h 30m1 stop Washington, D.C. Dulles Intl
$1,000United Airlines
Thu, Sep 24 - Mon, Sep 28
United Airlines Logo
5:05 am - 1:35 pmLIS  Lisbon Humberto Delgado-DEN Denver Intl
15h 30m1 stop Frankfurt am Main
United Airlines Logo
1:42 pm - 8:20 amDEN  Denver Intl-LIS Lisbon Humberto Delgado
11h 38m1 stop Newark
$1,000United Airlines
Booking Insights

KAYAK's insights & trends for Lisbon to Denver flights

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

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

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

Flight prices are below average for this route right now.

Flights to Denver from Lisbon usually cost between $1,222 and $1,450 in November.
The lowest price found in the past 5 days was $697 on Icelandair (Nov 19-Nov 23).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Lisbon to Denver, 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 Lisbon to Denver is November, where tickets cost $875 (return) on average. On the other hand, the most expensive months are June and August, where the average cost of round-trip tickets is $1,393 and $1,376 respectively.

Good to know

Low season

April

Cheapest flight

$448
Most popular time to fly and prices are also 6% lower on average.
Flight from Lisbon to Denver

When to book flights from Lisbon to Denver

Are your dates flexible? Find out the best times to travel from Lisbon to Denver 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 Lisbon to Denver

  • What is the cheapest flight from Lisbon to Denver?

    In the last 5 days, the lowest price for a flight from Lisbon to Denver was $448 for a one-way ticket and $697 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Lisbon and on arrival in Denver.

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

    Lisbon and Denver are both served by 1 main airport. You will leave Lisbon from Lisbon Humberto Delgado and will be arriving at Denver Intl.

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

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

  • Which airline alliances offer flights from Lisbon to Denver?

    Star Alliance is the only airline alliance operating flights between Lisbon and Denver.

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

    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 Lisbon to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Lisbon 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 Lisbon to Denver?

    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 Denver with an airline and back to Lisbon with another airline. Booking your flights between Lisbon and DEN 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 Lisbon to Denver?

    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 Denver from Lisbon up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Lisbon to Denver

 
See real verified KAYAK customer reviews for airlines flying from Lisbon to Denver. 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 Lisbon to Denver? 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 10081 reviews
7.7Boarding
8.1Crew
7.1Entertainment
6.7Food
7.3Comfort
Airline reviews

Flight was late, the only reason I almost missed my flight was that my connection was also late.

2.0 MediocreJoseph, Jul 2026
Read more United Airlines reviews

Flight was late, the only reason I almost missed my flight was that my connection was also late.

Lufthansa seats were much more comfortable than United. While they had about the same video selection, Lufthansa didn't put advertisements in with the movies like United did. And the Lufthansa food was much better than United.

We flew business fares. Was amazing. However, the check in didn't offer business fares preboarding which is less hectic. 8/10 due to this. Staff compared to Canadian carriers go above and beyond. Would gladly fly United again.

The staff was incredible, very attentive, polite, made you feel like the center of the universe. They even all wrote me a happy birthday card. Truly just an amazing crew, cannot stress it enough.

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

Boarding was smooth and efficient. The only food was some pretzels, but it was a short flight. Not much to order if you were hungry.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

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

Information on your arrival and departure airports