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$261+ 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap 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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$477
(Kiwi.com)

One-way from

$261
(FlightHub)

Popular in

June

Cheapest in

November

Average price

$745
Provider with most accurate pricing for Denver Intl-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Lisbon Humberto Delgado flights.
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From Denver Intl to Lisbon Humberto Delgado
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One-way flight from Denver Intl to Lisbon Humberto Delgado
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Highest demand for flights based on searches. 16% potential increase in price ($186 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find 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 January 8, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/114:20 pmDEN - LIS
1 stop15h 55mLufthansa
Wed 2/185:00 amLIS - DEN
2 stops21h 31mLufthansa
Deal found 1/7$477
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/214:20 pmDEN - LIS
1 stop14h 00mLufthansa
Thu 1/296:10 amLIS - DEN
1 stop15h 25mLufthansa
Deal found 1/6$488
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/204:20 pmDEN - LIS
1 stop14h 00mLufthansa
Tue 1/276:10 amLIS - DEN
1 stop15h 25mLufthansa
Deal found 1/7$489
This Gotogate deal was found by Cheapflights users on 1/7. 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 1/2011:15 amDEN - LIS
1 stop15h 05mMultiple Airlines
Tue 1/275:00 amLIS - DEN
2 stops36h 23mMultiple Airlines
Deal found 1/7$510
This Booking.com deal was found by Cheapflights users on 1/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/185:30 pmDEN - LIS
1 stop32h 50mMultiple Airlines
Tue 2/36:10 amLIS - DEN
1 stop15h 25mMultiple Airlines
Deal found 1/7$511
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/49:52 amDEN - LIS
1 stop15h 18mBrussels Airlines
Wed 2/1110:15 amLIS - DEN
1 stop14h 43mBrussels Airlines
Deal found 1/7$512
This Mytrip deal was found by Cheapflights users on 1/6. 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 4/74:05 pmDEN - LIS
1 stop23h 40mMultiple Airlines
Wed 4/297:25 amLIS - DEN
2 stops33h 50mMultiple Airlines
Deal found 1/6$513
This FlightHub deal was found by Cheapflights users on 1/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/64:40 pmDEN - LIS
1 stop14h 10mIcelandair
Thu 5/2110:20 pmLIS - DEN
1 stop21h 05mIcelandair
Deal found 1/6$514
This Mytrip deal was found by Cheapflights users on 1/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/211:25 pmDEN - LIS
1 stop12h 55mMultiple Airlines
Wed 1/286:10 amLIS - DEN
1 stop15h 25mMultiple Airlines
Deal found 1/8$515
This Mytrip deal was found by Cheapflights users on 1/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/411:15 amDEN - LIS
2 stops18h 35mMultiple Airlines
Wed 2/115:00 amLIS - DEN
2 stops18h 40mMultiple Airlines
Deal found 1/7$517
This Mytrip deal was found by Cheapflights users on 1/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/178:05 amDEN - LIS
2 stops42h 15mMultiple Airlines
Thu 2/195:00 amLIS - DEN
1 stop18h 00mMultiple Airlines
Deal found 1/7$518

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 January 8, 2026.
Use the filters below to find and compare flights from Denver to Lisbon that are best for you.

Fly from

Denver

Fly to

Lisbon

Route

Depart

Return

Price

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 1/18

12:49 pm-8:10 am

1 stop12h 21m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-1:40 pm

1 stop15h 40m

$524

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 1/21

1:31 pm-8:10 am

1 stop11h 39m

Lisbon Humberto Delgado

Fri 1/30

6:10 am-2:35 pm

1 stop15h 25m

$526

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 3/23

9:20 pm-11:30 pm

1 stop20h 10m

Lisbon Humberto Delgado

Thu 5/7

5:05 am-3:40 pm

1 stop17h 35m

$527

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 3/15

5:30 pm-9:20 am

1 stop33h 50m

Lisbon Humberto Delgado

Thu 4/2

7:25 am-3:40 pm

1 stop15h 15m

$528

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 1/21

11:15 am-8:10 am

2 stops13h 55m

Lisbon Humberto Delgado

Thu 1/29

6:10 am-2:35 pm

1 stop15h 25m

$530

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 1/18

1:25 pm-9:20 am

1 stop12h 55m

Lisbon Humberto Delgado

Thu 1/29

6:10 am-2:35 pm

1 stop15h 25m

$530

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 1/20

7:50 am-8:10 am

2 stops17h 20m

Lisbon Humberto Delgado

Thu 1/29

6:10 am-2:35 pm

1 stop15h 25m

$530

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 1/18

11:20 am-8:10 am

2 stops13h 50m

Lisbon Humberto Delgado

Fri 1/30

6:10 am-2:35 pm

1 stop15h 25m

$531

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 1/19

6:40 am-8:00 am

1 stop18h 20m

Lisbon Humberto Delgado

Thu 1/29

5:00 am-4:41 pm

2 stops18h 41m

$537

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 1/19

6:40 am-8:00 am

1 stop18h 20m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-4:41 pm

2 stops18h 41m

$537

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Showing 1-10 of 19 results
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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
GurufarePrice Accuracy2 starsTrust Score*3 stars
JetabroadPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Denver-Lisbon flight deals on Cheapflights vs. eDreams >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 Gurufare the most. Gurufare 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?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Lisbon. Price data was last updated on January 2, 2026.

Booking 44 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, November is the cheapest month in which you can book a flight from Denver to Lisbon (average of $503). Flying from Denver to Lisbon in June is currently the most expensive (average of $1,088). 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.

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 January 8, 2026.
See what other customers who have flown with United Airlines, Turkish Airlines, and Air 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.
United Airlines
7.4
Good
9,139 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
9,139 reviews
United Airlines
7.4
Good
9,139 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Turkish Airlines
7.3
Good
4,150 reviews
United Airlines
7.4
Good
9,139 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Air Canada
7.1
Good
10,603 reviews
United Airlines
7.4
Good
9,139 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Lufthansa
6.8
Okay
7,692 reviews
United Airlines
7.4
Good
9,139 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
British Airways
6.7
Okay
7,657 reviews
United Airlines
7.4
Good
9,139 reviews

Crew

8.1

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

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 $524, United Airlines can have you in Lisbon from Denver in 12h 21m. Denver and Lisbon are separated by a distance of 4826 mi.

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

    According to our current data, Icelandair ($458), British Airways ($555), and Lufthansa ($561) 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 Icelandair, with whom users have recently found tickets for as low as $251. However, be on the lookout for offers from British Airways and Air France, 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 White House, National Mall, and U.S. Capitol. Those on a layover in Washington, D.C. interested in visiting White House, National Mall, or U.S. Capitol can do so by traveling 22.4 mi, 23.3 mi, and 24.0 mi, respectively from Washington, D.C. Dulles Intl. Travelers can book a car rental at Washington, D.C. Dulles Intl for about $54 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 $60 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 New York. London sees the next fewest layovers on Denver to Lisbon flights.

  • 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, November is the cheapest month in which you can book a flight from Denver to Lisbon (average of $503). Flying from Denver to Lisbon in June is currently the most expensive (average of $1,088). 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
Oeiras
Ericeira
Beja
Costa da Caparica
Torres Vedras
Nazaré
Sesimbra
Colares

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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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$458Average$668FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$555Average$847FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$562Average$854FlexibilityNo cancel feeOn-time76%
DeltaCheapest$575Average$989FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$585Average$977FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$588Average$694FlexibilityNo cancel feeOn-time77%
KLMCheapest$599Average$761FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$603Average$1,177FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$625Average$913FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$655Average$994FlexibilityNo cancel feeOn-time77%

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