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$466+ Cheap flights from Lisbon (LIS) to Denver (DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Jul 25 — Aug 11
Sat 7/25
Sat 8/1
1 adult, Economy
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1. Tell us where you want to go

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3. Compare prices and book

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Cheap flight deals from Lisbon to Denver

Cheapest flights from Lisbon to Denver
Explore the most affordable flight options available from Lisbon to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 25, 2026.

This Icelandair deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:00 pm
LIS
-
DEN
1 stop35h 05m
Icelandair
Mon 11/233:40 pm
DEN
-
LIS
1 stop14h 10m
Icelandair
Deal found 6/24$688
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:20 am
LIS
-
DEN
2 stops21h 02m
American Airlines
Mon 11/235:01 pm
DEN
-
LIS
1 stop14h 54m
American Airlines
Deal found 6/24$852
This Icelandair deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:00 pm
LIS
-
DEN
1 stop35h 00m
Icelandair
Wed 10/144:40 pm
DEN
-
LIS
1 stop14h 10m
Icelandair
Deal found 6/20$854
This Expedia deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:05 am
LIS
-
DEN
1 stop18h 58m
British Airways
Thu 12/105:05 pm
DEN
-
LIS
1 stop21h 50m
British Airways
Deal found 6/24$867
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:00 am
LIS
-
DEN
2 stops22h 00m
Delta
Thu 12/1012:45 pm
DEN
-
LIS
2 stops19h 25m
Delta
Deal found 6/24$871
This British Airways deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/711:05 am
LIS
-
DEN
1 stop18h 18m
British Airways
Mon 10/1210:43 am
DEN
-
LIS
2 stops22h 02m
British Airways
Deal found 6/20$874

Find flight deals from Lisbon to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Lisbon (LIS) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$688
(Icelandair)

One-way from

$466
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,393
Provider with most accurate pricing for Lisbon Humberto Delgado-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Denver Intl flights.
Search Deals
From Lisbon Humberto Delgado to Denver Intl
Search Deals
One-way flight from Lisbon Humberto Delgado to Denver Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($156 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Lisbon to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 25, 2026.
Use the filters below to find and compare flights from Lisbon to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 11/19

2:00 pm-6:05 pm

1 stop35h 05m

Denver Intl

Mon 11/23

3:40 pm-12:50 pm

1 stop14h 10m

$688

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 11/19

6:30 am-10:22 pm

2 stops22h 52m

Denver Intl

Mon 11/23

5:01 pm-6:55 pm

1 stop18h 54m

$855

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 11/10

5:00 am-8:00 pm

2 stops22h 00m

Denver Intl

Thu 12/10

12:45 pm-3:10 pm

2 stops19h 25m

$871

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 10/7

11:05 am-10:23 pm

1 stop18h 18m

Denver Intl

Tue 10/13

12:39 pm-11:00 pm

2 stops27h 21m

$874

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 9/17

11:05 am-10:24 pm

1 stop18h 19m

Denver Intl

Thu 9/24

6:40 pm-11:05 pm

1 stop21h 25m

$874
Quickest round-trip

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 10/6

11:05 am-10:23 pm

1 stop18h 18m

Denver Intl

Tue 10/13

6:35 pm-5:55 pm

1 stop16h 20m

$874

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 10/3

11:00 am-4:25 pm

1 stop36h 25m

Denver Intl

Sat 10/10

6:35 pm-11:10 pm

1 stop21h 35m

$881
Cheapest one-way

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 10/17

12:45 pm-12:23 am

2 stops18h 38m

$546

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 10/9

6:00 am-11:04 pm

3 stops48h 04m

$558

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 9/20

7:05 pm-8:35 pm

2 stops32h 30m

$569

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

Showing 1-10 of 14 resultsSorted by cheapest first
1
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Compare providers for flights from Lisbon to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Lisbon to Denver in June.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Thrive TravelPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Lisbon-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Lisbon-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Lisbon-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Lisbon-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Lisbon-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Lisbon to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Lisbon with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Lisbon to Denver?

Currently, November is the cheapest month in which you can book a flight from Lisbon to Denver (average of $875). Flying from Lisbon to Denver in June is currently the most expensive (average of $1,393). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Lisbon to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Lisbon to Denver?

    Airlines like Icelandair fly from Lisbon to Denver in about 35h 05m. The time it takes to get you to your destination can typically vary by up to . There are 4826 mi between Lisbon and Denver.

  • What are the cheapest airlines to fly from Lisbon to Denver one-way?

    The cheapest airlines for a one-way flight from Lisbon to Denver are British Airways ($566), American Airlines ($571), and Aer Lingus ($600).

  • Can I find deals for flights from Lisbon to Denver that include hotel bookings?

    Yes. In addition to deals on Lisbon to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Lisbon to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Lisbon to Denver.

  • Can I find deals for business class flights from Lisbon to Denver?

    Yes. Cheapflights offers flight deals from Lisbon to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Lisbon to Denver?

    Currently, November is the cheapest month in which you can book a flight from Lisbon to Denver (average of $875). Flying from Lisbon to Denver in June is currently the most expensive (average of $1,393). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Westminster
Centennial
Lakewood
Broomfield
Golden
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Glendale
Evergreen

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