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Denver

$373+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Sep 13 — Sep 201
Sun 9/13
Sun 9/20
1 adult, Economy
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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 August 14, 2026.

This Icelandair deal was found by Cheapflights users on 8/13. 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 11/122:00 pm -
1 stop35h 00m
Mon 11/163:40 pm -
1 stop14h 10m
Deal found 8/13$698
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:00 pm -
1 stop20h 18m
Wed 10/216:56 pm -
1 stop15h 19m
Deal found 8/14$851
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1312:30 pm -
2 stops26h 48m
Wed 10/214:40 pm -
1 stop14h 10m
Deal found 8/14$865
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:15 pm -
1 stop27h 00m
Fri 9/188:00 pm -
1 stop18h 35m
Deal found 8/11$869
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:15 pm -
1 stop27h 00m
Sat 9/198:00 pm -
1 stop18h 35m
Deal found 8/14$872
This Gotogate deal was found by Cheapflights users on 8/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:20 pm -
1 stop21h 20m
Wed 9/98:10 pm -
1 stop18h 10m
Deal found 8/10$903
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1210:20 am -
1 stop30h 28m
Mon 10/1910:40 am -
2 stops29h 20m
Deal found 8/14$919
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:20 am -
1 stop28h 58m
Sat 10/246:40 am -
2 stops34h 35m
Deal found 8/13$945
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:10 am -
2 stops31h 38m
Mon 10/264:40 pm -
1 stop14h 10m
Deal found 8/11$946

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 August 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$698
(Icelandair)

One-way from

$373
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,376
Provider with most accurate pricing for Lisbon Humberto Delgado-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Denver Intl flights.
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From Lisbon Humberto Delgado to Denver Intl
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One-way flight from Lisbon Humberto Delgado to Denver Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($128 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
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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 August 14, 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 Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Fri 9/4

5:00 am-7:51 pm

2 stops21h 51m

Denver Intl

Sat 9/19

12:15 pm-2:55 pm

2 stops19h 40m

$976

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Fri 9/4

5:00 am-5:23 pm

2 stops19h 23m

Denver Intl

Sat 9/19

5:40 pm-10:25 pm

1 stop21h 45m

$976
Quickest round-trip

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Sat 9/5

5:00 am-5:23 pm

2 stops19h 23m

Denver Intl

Mon 9/21

5:40 pm-2:55 pm

1 stop14h 15m

$976

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Wed 9/16

5:00 am-5:21 pm

2 stops19h 21m

Denver Intl

Wed 10/28

11:28 am-11:20 am

2 stops17h 52m

$976

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Wed 10/7

5:00 am-5:08 pm

2 stops19h 08m

Denver Intl

Wed 10/28

10:30 am-11:20 am

2 stops18h 50m

$977

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Fri 9/4

5:00 am-10:48 pm

2 stops24h 48m

Denver Intl

Fri 9/18

6:35 am-8:50 am

2 stops19h 15m

$978

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Sat 10/24

5:00 am-5:08 pm

2 stops19h 08m

Denver Intl

Sat 11/7

12:15 pm-3:10 pm

2 stops19h 55m

$978

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Mon 9/7

5:00 am-3:23 pm

2 stops17h 23m

Denver Intl

Mon 9/14

5:55 pm-5:50 pm

1 stop16h 55m

$979
Cheapest one-way

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Tue 10/27

6:30 am-9:48 am

3 stops33h 18m

$439

LisbonDenver

LIS Lisbon Humberto Delgado - DEN Denver Intl

LISDEN

Lisbon Humberto Delgado

Sat 9/12

6:10 am-11:20 am

3 stops36h 10m

$445

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/10

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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 August.
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, February is the cheapest month in which you can book a flight from Lisbon to Denver (average of $928). 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.

How much does it cost to fly round-trip from Lisbon to Denver?

Airfare is below average for this route at the moment.

Lisbon to Denver flights typically cost between $1,222 and $1,450 in November.
The cheapest round-trip price found within the last 5 days was $698 on Icelandair (Nov 12-Nov 16).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated August 14, 2026.
Get a feel of what it's like to fly with United Airlines from Lisbon to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,108 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
United Airlines
7.4
Good
10,108 reviews
United Airlines
7.4
Good
10,108 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible

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 and Delta fly from Lisbon to Denver in about 21h 51m. The time it takes to get you to your destination can typically vary by up to 13h 09m. There are 4826 mi between Lisbon and Denver. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Lisbon to Denver round-trip?

    Currently priced at $920, United Airlines will fly you from Lisbon to Denver and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. United Airlines is 14% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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, February is the cheapest month in which you can book a flight from Lisbon to Denver (average of $928). 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
Westminster
Black Hawk
Lakewood
Centennial
Broomfield
Golden
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Cripple Creek
Greeley
Winter Park
Limon
Manitou Springs
Frisco
Englewood
Glendale
Evergreen

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Lisbon to Denver

Discover the top airline that operate flights from Lisbon to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$920Average$1,083FlexibilityNo cancel feeOn-time69%

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