Lisbon

$255+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Feb 27 — Mar 61
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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 January 28, 2026.

This United Airlines deal was found by Cheapflights users on 1/25. 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.
Mon 4/2712:34 pm
DEN
-
LIS
1 stop12h 46m
United Airlines
Tue 5/55:05 am
LIS
-
DEN
2 stops25h 25m
United Airlines
Deal found 1/25$564
This Delta deal was found by Cheapflights users on 1/25. 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.
Sun 4/266:40 am
DEN
-
LIS
1 stop18h 20m
Delta
Wed 5/65:00 am
LIS
-
DEN
2 stops24h 49m
Delta
Deal found 1/25$566
This Iberia deal was found by Cheapflights users on 1/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:40 pm
DEN
-
LIS
1 stop16h 15m
Multiple Airlines
Tue 4/216:35 am
LIS
-
DEN
2 stops23h 05m
Multiple Airlines
Deal found 1/26$568
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/185:00 am
DEN
-
LIS
2 stops20h 10m
United Airlines
Thu 2/265:00 am
LIS
-
DEN
2 stops20h 14m
United Airlines
Deal found 1/26$569
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Sat 4/2511:59 pm
DEN
-
LIS
1 stop27h 31m
United Airlines
Wed 5/67:25 am
LIS
-
DEN
2 stops23h 05m
United Airlines
Deal found 1/25$570
This oojo deal was found by Cheapflights users on 1/27. 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.
Sat 4/44:40 pm
DEN
-
LIS
1 stop21h 40m
Icelandair
Sun 4/1210:25 pm
LIS
-
DEN
1 stop27h 35m
Icelandair
Deal found 1/27$572
This KLM deal was found by Cheapflights users on 1/26. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2811:59 pm
DEN
-
LIS
1 stop25h 01m
KLM
Fri 5/85:00 am
LIS
-
DEN
2 stops17h 31m
KLM
Deal found 1/26$573
This FlightHub deal was found by Cheapflights users on 1/28. 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 4/155:40 pm
DEN
-
LIS
1 stop21h 35m
Lufthansa
Thu 4/237:25 am
LIS
-
DEN
2 stops23h 19m
Lufthansa
Deal found 1/28$574
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 2/257:05 am
DEN
-
LIS
1 stop18h 50m
American Airlines
Wed 3/48:20 am
LIS
-
DEN
2 stops19h 30m
American Airlines
Deal found 1/27$575
This oojo deal was found by Cheapflights users on 1/26. 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.
Mon 4/206:40 pm
DEN
-
LIS
1 stop14h 05m
British Airways
Mon 5/46:45 pm
LIS
-
DEN
1 stop28h 45m
British Airways
Deal found 1/26$576
This oojo deal was found by Cheapflights users on 1/27. 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 4/145:10 pm
DEN
-
LIS
2 stops22h 50m
British Airways
Tue 4/216:45 pm
LIS
-
DEN
2 stops34h 55m
British Airways
Deal found 1/27$577

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 January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$564
(United Airlines)

One-way from

$255
(Cheapflightsfares)

Popular in

June

Cheapest in

November

Average price

$710
Provider with most accurate pricing for Denver Intl-Lisbon Humberto Delgado flight deals.
Provider most trusted by Cheapflights users for Denver Intl-Lisbon Humberto Delgado flights.
From Denver Intl to Lisbon Humberto Delgado
One-way flight from Denver Intl to Lisbon Humberto Delgado
Highest demand for flights based on searches. 17% potential increase in price ($195 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Average for round-trip flights in January 2026

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 28, 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

Mon 4/27

12:34 pm-8:20 am

1 stop12h 46m

Lisbon Humberto Delgado

Wed 5/6

5:05 am-11:30 pm

2 stops25h 25m

$564

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 4/26

6:40 am-8:00 am

1 stop18h 20m

Lisbon Humberto Delgado

Wed 5/6

5:00 am-10:49 pm

2 stops24h 49m

$566

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 2/24

9:36 am-8:10 am

2 stops15h 34m

Lisbon Humberto Delgado

Tue 3/3

5:00 am-6:08 pm

2 stops20h 08m

$569

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 2/25

10:50 am-8:00 am

2 stops14h 10m

Lisbon Humberto Delgado

Wed 3/4

5:00 am-4:39 pm

2 stops18h 39m

$572

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 4/28

6:40 pm-3:35 pm

1 stop13h 55m

Lisbon Humberto Delgado

Mon 5/4

6:45 pm-4:30 pm

1 stop28h 45m

$579

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 4/27

12:34 pm-8:20 am

1 stop12h 46m

Lisbon Humberto Delgado

Thu 5/7

11:25 am-12:44 am

2 stops20h 19m

$580

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 4/25

11:59 pm-10:30 am

1 stop27h 31m

Lisbon Humberto Delgado

Thu 4/30

5:05 am-3:40 pm

1 stop17h 35m

$592

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 4/27

12:34 pm-8:20 am

1 stop12h 46m

Lisbon Humberto Delgado

Fri 5/1

11:25 am-7:00 pm

1 stop14h 35m

$596

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 4/20

3:55 pm-10:30 am

1 stop11h 35m

Lisbon Humberto Delgado

Tue 5/12

5:05 am-3:40 pm

1 stop17h 35m

$600

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 4/26

6:40 pm-11:05 pm

1 stop21h 25m

Lisbon Humberto Delgado

Sun 5/3

6:35 am-10:40 pm

2 stops23h 05m

$618

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 20 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 Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
GurufarePrice Accuracy3 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 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?

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 23, 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 $1,087). 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 28, 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.

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 $564, United Airlines can have you in Lisbon from Denver in 12h 46m. 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 ($458), British Airways ($555), and Lufthansa ($560) offers the cheapest pricing from Denver to Lisbon. Users have found that Icelandair is 49% 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 American 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?

  • 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 $50 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 $52 per day.

  • Where are the least popular layover locations for 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 $1,087). 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 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$458Average$663FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$555Average$824FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$560Average$843FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$574Average$968FlexibilityNo cancel feeOn-time69%
DeltaCheapest$575Average$958FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$586Average$694FlexibilityNo cancel feeOn-time77%
KLMCheapest$599Average$761FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$603Average$984FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$625Average$882FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$655Average$1,069FlexibilityNo cancel feeOn-time77%

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