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$257+ Cheap flights from Denver (DEN) to Lisbon (LIS)

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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Aug 8 — Aug 151
Sat 8/8
Sat 8/15
1 adult, Economy
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Cheap flight deals from Denver to Lisbon

Cheapest flights from Denver to Lisbon
Explore the most affordable flight options available from Denver to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 9, 2026.

This FlightHub deal was found by Cheapflights users on 7/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/54:40 pm
DEN
-
LIS
1 stop14h 10m
Icelandair
Sun 10/183:00 pm
LIS
-
DEN
1 stop35h 00m
Icelandair
Deal found 7/7$600
This FlightHub deal was found by Cheapflights users on 7/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/183:40 pm
DEN
-
LIS
1 stop14h 10m
Icelandair
Thu 11/262:00 pm
LIS
-
DEN
1 stop35h 00m
Icelandair
Deal found 7/5$689
This Gotogate deal was found by Cheapflights users on 7/7. 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.
Tue 10/275:40 pm
DEN
-
LIS
1 stop33h 15m
Multiple Airlines
Fri 11/65:00 am
LIS
-
DEN
1 stop17h 35m
Multiple Airlines
Deal found 7/7$708
This Gotogate deal was found by Cheapflights users on 7/8. 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.
Tue 11/31:30 pm
DEN
-
LIS
1 stop12h 50m
Multiple Airlines
Tue 11/105:00 am
LIS
-
DEN
1 stop17h 35m
Multiple Airlines
Deal found 7/8$711
This oojo deal was found by Cheapflights users on 7/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:15 pm
DEN
-
LIS
1 stop14h 05m
Lufthansa
Fri 11/65:00 am
LIS
-
DEN
1 stop17h 35m
Lufthansa
Deal found 7/9$713
This Mytrip deal was found by Cheapflights users on 7/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:20 pm
DEN
-
LIS
2 stops31h 35m
Air Canada
Fri 11/611:20 am
LIS
-
DEN
2 stops37h 35m
Air Canada
Deal found 7/6$717
This Air Canada deal was found by Cheapflights users on 7/5. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:15 am
DEN
-
LIS
2 stops17h 40m
Air Canada
Fri 11/2711:20 am
LIS
-
DEN
2 stops37h 43m
Air Canada
Deal found 7/5$719
This United Airlines deal was found by Cheapflights users on 7/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1411:25 am
DEN
-
LIS
1 stop14h 55m
United Airlines
Wed 11/45:00 am
LIS
-
DEN
1 stop15h 40m
United Airlines
Deal found 7/5$722
This United Airlines deal was found by Cheapflights users on 7/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:18 pm
DEN
-
LIS
1 stop11h 52m
United Airlines
Fri 11/65:00 am
LIS
-
DEN
1 stop17h 35m
United Airlines
Deal found 7/7$724

Find flight deals from Denver to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Lisbon (LIS). 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 July 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$600
(FlightHub)

One-way from

$257
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,119
Provider with most accurate pricing for Denver Intl-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Lisbon Humberto Delgado flights.
Search Deals
From Denver Intl to Lisbon Humberto Delgado
Search Deals
One-way flight from Denver Intl to Lisbon Humberto Delgado
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($250 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Lisbon 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 July 9, 2026.
Use the filters below to find and compare flights from Denver to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 10/14

9:40 am-9:20 am

1 stop16h 40m

Lisbon Humberto Delgado

Wed 10/21

5:05 am-11:08 pm

2 stops25h 03m

$753

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 10/3

6:05 pm-8:20 am

1 stop31h 15m

Lisbon Humberto Delgado

Wed 10/14

11:25 am-10:31 am

1 stop30h 06m

$787
Quickest round-trip

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 9/30

11:25 am-9:20 am

1 stop14h 55m

Lisbon Humberto Delgado

Sat 10/10

5:05 am-1:35 pm

1 stop15h 30m

$843

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 10/10

5:40 pm-5:50 pm

1 stop17h 10m

Lisbon Humberto Delgado

Sat 10/17

5:00 am-5:47 pm

2 stops19h 47m

$914

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Thu 10/1

12:25 pm-2:55 pm

2 stops19h 30m

Lisbon Humberto Delgado

Sun 10/11

5:00 am-5:47 pm

2 stops19h 47m

$919

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Thu 9/24

12:30 pm-8:20 am

1 stop12h 50m

Lisbon Humberto Delgado

Sun 10/4

12:20 pm-12:30 am

1 stop19h 10m

$926

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 9/9

9:40 am-9:20 am

1 stop16h 40m

Lisbon Humberto Delgado

Wed 9/23

5:05 am-3:40 pm

1 stop17h 35m

$968

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 9/2

6:40 am-8:50 am

2 stops19h 10m

Lisbon Humberto Delgado

Wed 9/16

5:00 am-10:40 pm

2 stops24h 40m

$984

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 9/2

6:40 am-8:50 am

2 stops19h 10m

Lisbon Humberto Delgado

Sat 9/19

5:00 am-5:22 pm

2 stops19h 22m

$1,044

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Thu 9/3

8:25 pm-3:35 pm

1 stop36h 10m

Lisbon Humberto Delgado

Sat 9/19

5:55 am-6:25 pm

1 stop19h 30m

$1,152

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/4

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Denver to Lisbon

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 Denver to Lisbon in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
BusinessClassPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star
JetabroadPrice Accuracy3 starsTrust 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 Denver-Lisbon flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Lisbon flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Lisbon flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Lisbon 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 Denver-Lisbon 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 Denver to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Denver 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 Denver to Lisbon

How far ahead should I book a flight from Denver to Lisbon?

Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to Lisbon. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, February is the cheapest month in which you can book a flight from Denver to Lisbon (average of $630). Flying from Denver to Lisbon in June is currently the most expensive (average of $1,335). 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 Denver to Lisbon?

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated July 9, 2026.
See what other customers who have flown with Turkish Airlines,United Airlines, andAir Canada from Denver to Lisbon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.4
Good
4,441 reviews

Entertainment

7.5

Boarding

7.3

Food

7.5

Crew

7.8

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
Turkish Airlines
7.4
Good
4,441 reviews
Turkish Airlines
7.4
Good
4,441 reviews

Entertainment

7.5

Boarding

7.3

Food

7.5

Crew

7.8

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
United Airlines
7.4
Good
9,960 reviews
Turkish Airlines
7.4
Good
4,441 reviews

Entertainment

7.5

Boarding

7.3

Food

7.5

Crew

7.8

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
Air Canada
7.1
Good
11,323 reviews
Turkish Airlines
7.4
Good
4,441 reviews

Entertainment

7.5

Boarding

7.3

Food

7.5

Crew

7.8

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
Lufthansa
6.8
Okay
8,127 reviews
Turkish Airlines
7.4
Good
4,441 reviews

Entertainment

7.5

Boarding

7.3

Food

7.5

Crew

7.8

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
British Airways
6.7
Okay
8,105 reviews
Turkish Airlines
7.4
Good
4,441 reviews

Entertainment

7.5

Boarding

7.3

Food

7.5

Crew

7.8

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent

Related info for your journey

Find useful and relevant information for your journey from Denver to Lisbon. 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 Denver to Lisbon?

    For as low as $843, United Airlines can have you in Lisbon from Denver in 14h 55m. Denver and Lisbon are separated by a distance of 4826 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Denver to Lisbon round-trip?

    According to our current data, Icelandair ($464), Lufthansa ($559), and Delta ($575) offers the cheapest pricing from Denver to Lisbon. Users have found that Icelandair is 50% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as $326. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Denver to Lisbon for a low price.

  • Where are the most common layover locations when flying from Denver to Lisbon?

    Denver to Lisbon flights have a layover in Washington, D.C. most of the time. Munich is the second most popular location for layovers on flights from Denver to Lisbon.

  • What are some popular things to do or see while on a layover in Washington, D.C.?

    Most Washington, D.C. visitors opt to spend their time experiencing National Mall, Smithsonian American Art Museum, and National Zoo. Those on a layover in Washington, D.C. interested in visiting National Mall, Smithsonian American Art Museum, or National Zoo can do so by traveling 23.3 mi, 23.2 mi, and 21.5 mi, respectively from Washington, D.C. Dulles Intl. Travelers can book a car rental at Washington, D.C. Dulles Intl for about $69 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Munich?

    The majority of Munich visitors spend their time at Theresienwiese, Marienplatz, and Altes Rathaus. Theresienwiese, Marienplatz, and Altes Rathaus can be visited by traveling about 18.8 mi, 17.8 mi, and 17.8 mi respectively from Munich Franz Josef Strauss. Travelers in need of a car in Munich can rent one for about $48 per day.

  • Where are the least popular layover locations for Denver to Lisbon flights?

    The least popular layover on flights from Denver to Lisbon is London.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver to Lisbon 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 Denver to Lisbon?

    Currently, February is the cheapest month in which you can book a flight from Denver to Lisbon (average of $630). Flying from Denver to Lisbon in June is currently the most expensive (average of $1,335). 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 Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Fátima
Ericeira
Oeiras
Beja
Torres Vedras
Nazaré
Colares
Sesimbra

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Alternative routes for Denver to Lisbon

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Denver to Lisbon

Discover the top 10 airlines that operate flights from Denver to Lisbon. 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 July 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$464Average$563FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$559Average$902FlexibilityNo cancel feeOn-time76%
DeltaCheapest$575Average$941FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$576Average$988FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$592Average$712FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$622Average$888FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$630Average$776FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$635Average$761FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$645Average$1,009FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$651Average$1,179FlexibilityNo cancel feeOn-time77%

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