LIS - DEN

$345 Find Cheap Flights from Lisbon to Denver

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 4/22. 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 Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Lisbon to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Lisbon to Denver, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$765
Overall average: $1,051
Multiple Airlines
Fri 4/10Sat 4/25
LIS - DEN • 2 stops
Cheapest one-way
$345
Typical prices: $696-$940
Multiple Airlines
Wed 4/22
LIS - DEN • 3 stops
Top airlines
Lufthansa
Cheapest • from $875 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
March
Cheapest • 11% price drop
August
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 Denver!
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

Fri, Apr 10 - Sat, Apr 25
Multiple Airlines Logo
7:40 am - 5:50 pm
LIS
-
DEN
41h 10m
2 stops
Multiple Airlines Logo
4:40 pm - 1:50 pm
DEN
-
LIS
14h 10m
1 stop
$765Multiple Airlines
Fri, Apr 10 - Sat, Apr 25
Multiple Airlines Logo
8:25 am - 5:50 pm
LIS
-
DEN
40h 25m
2 stops
Multiple Airlines Logo
4:40 pm - 1:50 pm
DEN
-
LIS
14h 10m
1 stop
$790Multiple Airlines
Fri, Apr 10 - Sat, Apr 25
Multiple Airlines Logo
8:25 am - 5:50 pm
LIS
-
DEN
40h 25m
2 stops
Multiple Airlines Logo
4:40 pm - 1:50 pm
DEN
-
LIS
14h 10m
1 stop
$813Multiple Airlines
Fri, Apr 10 - Sat, Apr 25
Multiple Airlines Logo
8:05 pm - 8:27 am
LIS
-
DEN
43h 22m
2 stops
Multiple Airlines Logo
4:40 pm - 1:50 pm
DEN
-
LIS
14h 10m
1 stop
$833Multiple Airlines
Mon, Mar 16 - Mon, Mar 23
Multiple Airlines Logo
8:50 pm - 9:44 am
LIS
-
DEN
42h 54m
2 stops
Multiple Airlines Logo
11:49 pm - 5:35 am
DEN
-
LIS
23h 46m
1 stop
$860Multiple Airlines
Fri, Apr 10 - Sat, Apr 25
Multiple Airlines Logo
11:05 am - 10:47 pm
LIS
-
DEN
18h 42m
1 stop
Multiple Airlines Logo
4:40 pm - 1:50 pm
DEN
-
LIS
14h 10m
1 stop
$874Multiple Airlines
Fri, Apr 10 - Sat, Apr 25
Lufthansa Logo
5:05 am - 3:40 pm
LIS
-
DEN
17h 35m
1 stop
Lufthansa Logo
4:05 pm - 10:45 pm
DEN
-
LIS
23h 40m
1 stop
$875Lufthansa
Fri, Apr 10 - Sat, Apr 25
Lufthansa Logo
5:05 am - 3:40 pm
LIS
-
DEN
17h 35m
1 stop
Lufthansa Logo
1:30 pm - 10:35 am
DEN
-
LIS
14h 05m
1 stop
$885Lufthansa
Fri, Apr 10 - Sat, Apr 25
Lufthansa Logo
5:05 am - 3:40 pm
LIS
-
DEN
17h 35m
1 stop
Lufthansa Logo
4:05 pm - 10:45 pm
DEN
-
LIS
23h 40m
1 stop
$886Lufthansa
Fri, Apr 10 - Sat, Apr 25
Lufthansa Logo
5:05 am - 3:40 pm
LIS
-
DEN
17h 35m
1 stop
Lufthansa Logo
5:40 pm - 11:35 pm
DEN
-
LIS
22h 55m
1 stop
$887Lufthansa
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.

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 March, where tickets cost $874 (return) on average. On the other hand, the most expensive months are July and April, where the average cost of round-trip tickets is $1,271 and $1,051 respectively.

Find deals

Good to know

Low seasonJune
Cheapest flight$345
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 8% 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 3 days, the lowest price for a flight from Lisbon to Denver was $345 for a one-way ticket and $765 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 9308 reviews
7.1Entertainment
6.6Food
7.7Boarding
8.1Crew
7.3Comfort
Airline reviews

Both of my flights arrived early and check in process was smooth

10.0 ExcellentDarnell, Feb 2026
COS - DEN
Read more United Airlines reviews

Both of my flights arrived early and check in process was smooth

Everything was on time Will use united again for sure

I just think it’s unfortunate that Airlines have completely abandoned the idea of serving any kind of decent or even real food on flights, not even on a four hour flight!? Those days are gone, I guess.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

We Left Calgary 1/2 hour late and that made for a tight connection in Denver. After arriving everything was done to help us make our connection. That was a great effort. Thank You United

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

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

Information on your arrival and departure airports

Lisbon (LIS)
Denver (DEN)