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$313+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Lisbon Humberto Delgado are usually found in January or February, booked 62 days in advance, depart on a Wednesday or Monday and return on a Wednesday

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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$699
(United Airlines)

One-way from

$351
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$853
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. 20% potential increase in price ($265 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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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 March 25, 2025.

This oojo deal was found by Cheapflights users on 3/23. 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 9/237:50 pmDEN - LIS
1 stop36h 25mTurkish Airlines
Sun 10/1210:55 amLIS - DEN
1 stop38h 00mTurkish Airlines
Deal found 3/23$694
This Air Canada deal was found by Cheapflights users on 3/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/88:15 amDEN - LIS
2 stops19h 55mMultiple Airlines
Wed 10/225:05 amLIS - DEN
2 stops18h 28mMultiple Airlines
Deal found 3/24$696
This Air Canada deal was found by Cheapflights users on 3/23. 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.
Sun 4/611:15 amDEN - LIS
1 stop15h 05mAir Canada
Fri 4/2511:25 amLIS - DEN
1 stop30h 02mAir Canada
Deal found 3/23$697
This Finnair deal was found by Cheapflights users on 3/23. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/56:35 pmDEN - LIS
1 stop21h 35mFinnair
Tue 5/136:35 amLIS - DEN
2 stops23h 58mFinnair
Deal found 3/23$698
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2611:59 pmDEN - LIS
1 stop25h 21mUnited Airlines
Sun 5/1110:25 amLIS - DEN
1 stop15h 48mUnited Airlines
Deal found 3/24$699
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Mon 4/286:35 pmDEN - LIS
1 stop21h 35mAmerican Airlines
Mon 5/511:05 amLIS - DEN
1 stop17h 48mAmerican Airlines
Deal found 3/24$710
This Delta deal was found by Cheapflights users on 3/23. 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.
Mon 4/711:36 amDEN - LIS
1 stop16h 09mDelta
Tue 4/225:40 amLIS - DEN
1 stop16h 50mDelta
Deal found 3/23$712
This British Airways deal was found by Cheapflights users on 3/24. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/282:45 pmDEN - LIS
2 stops17h 55mBritish Airways
Mon 5/512:30 pmLIS - DEN
2 stops18h 29mBritish Airways
Deal found 3/24$714
This Cheapflightsfares deal was found by Cheapflights users on 3/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/68:00 amDEN - LIS
2 stops20h 25mLufthansa
Tue 5/2012:15 pmLIS - DEN
2 stops17h 57mLufthansa
Deal found 3/23$715
This Air France deal was found by Cheapflights users on 3/23. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/225:40 pmDEN - LIS
1 stop21h 45mAir France
Tue 4/2910:00 amLIS - DEN
1 stop16h 53mAir France
Deal found 3/23$721
This Expedia deal was found by Cheapflights users on 3/23. 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 4/157:20 amDEN - LIS
2 stops21h 30mIberia
Wed 4/238:45 pmLIS - DEN
2 stops32h 54mIberia
Deal found 3/23$732
This KLM deal was found by Cheapflights users on 3/24. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/164:15 pmDEN - LIS
2 stops15h 20mKLM
Mon 4/285:00 amLIS - DEN
2 stops19h 06mKLM
Deal found 3/24$799

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 March 25, 2025.
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

Thu 9/4

7:50 pm-3:15 pm

1 stop36h 25m

Lisbon Humberto Delgado

Sun 9/21

4:30 pm-5:55 pm

1 stop32h 25m

$694

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 4/6

11:15 am-9:20 am

1 stop15h 05m

Lisbon Humberto Delgado

Fri 4/25

11:25 am-10:27 am

1 stop30h 02m

$697

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 5/5

6:35 pm-11:10 pm

1 stop21h 35m

Lisbon Humberto Delgado

Tue 5/13

6:35 am-11:33 pm

2 stops23h 58m

$698

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 4/26

11:59 pm-8:20 am

1 stop25h 21m

Lisbon Humberto Delgado

Sun 5/11

10:25 am-7:13 pm

1 stop15h 48m

$699

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sat 4/26

11:59 pm-8:20 am

1 stop25h 21m

Lisbon Humberto Delgado

Sun 5/11

5:55 am-4:20 pm

1 stop17h 25m

$700

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 4/28

6:35 pm-11:10 pm

1 stop21h 35m

Lisbon Humberto Delgado

Mon 5/5

11:05 am-9:53 pm

1 stop17h 48m

$710

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 4/7

11:36 am-10:45 am

1 stop16h 09m

Lisbon Humberto Delgado

Tue 4/22

5:40 am-3:30 pm

1 stop16h 50m

$712

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Mon 4/28

2:45 pm-3:40 pm

2 stops17h 55m

Lisbon Humberto Delgado

Mon 5/5

12:30 pm-11:59 pm

2 stops18h 29m

$714

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 5/6

8:00 am-11:25 am

2 stops20h 25m

Lisbon Humberto Delgado

Tue 5/20

12:15 pm-11:12 pm

2 stops17h 57m

$715

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Tue 4/22

5:40 pm-10:25 pm

1 stop21h 45m

Lisbon Humberto Delgado

Tue 4/29

10:00 am-7:53 pm

1 stop16h 53m

$721

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 30 results
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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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Lisbon. Price data was last updated on March 21, 2025.

Booking 62 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, January is the cheapest month in which you can book a flight from Denver to Lisbon (average of $612). Flying from Denver to Lisbon in June is currently the most expensive (average of $1,219). 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.

What is the cheapest time of day to fly from DEN to LIS?

Find hourly flight availability from Denver to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

It’s optimal to fly from Denver to Lisbon in the morning. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Denver to Lisbon?

Use this chart to determine the cheapest time to fly round-trip from Denver to Lisbon. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Denver to Lisbon flight should consider departing on Sunday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Lisbon by month

Plan your trip to Lisbon by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Lisbon ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Lisbon when rainfall is around 0.2 in.

Temperature in Lisbon by month

Plan your trip to Lisbon by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Lisbon, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 March 25, 2025.
See what other customers who have flown with Delta, KLM and Air France 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.
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,890 reviews
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,318 reviews
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,422 reviews
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Turkish Airlines
7.3
Good
3,745 reviews
Delta
8.0
Very good
7,890 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    According to our current data, United Airlines ($699), Air Canada ($703), and American Airlines ($710) offers the cheapest pricing from Denver to Lisbon. Users have found that United Airlines is 32% 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 Scandinavian Airlines, with whom users have recently found tickets for as low as $544. However, be on the lookout for offers from Air Canada and British Airways, 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 London most of the time. Washington, D.C. is the second most popular location for layovers on flights from Denver to Lisbon. Munich comes next as the third most popular layover location for Denver to Lisbon flights.

  • What are some popular things to do or see while on a layover in London?

    Most London visitors opt to spend their time experiencing Hyde Park, Piccadilly Circus, and Buckingham Palace. Those on a layover in London interested in visiting Hyde Park, Piccadilly Circus, or Buckingham Palace can do so by traveling 12.5 mi, 14.1 mi, and 13.7 mi, respectively from London Heathrow. Travelers can book a car rental at London Heathrow for about $38 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Washington, D.C.?

    The majority of Washington, D.C. visitors spend their time at White House, National Mall, and U.S. Capitol. White House, National Mall, and U.S. Capitol can be visited by traveling about 22.4 mi, 23.3 mi, and 24.0 mi respectively from Washington, D.C. Dulles Intl. Travelers in need of a car in Washington, D.C. can rent one for about $47 per day.

  • What are points of interest worth seeing during a layover in Munich?

    Most Munich visitors opt to spend their time at Theresienwiese, Marienplatz, and Altes Rathaus. Theresienwiese, Marienplatz, and Altes Rathaus are located 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 $44 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 Philadelphia. New York 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, January is the cheapest month in which you can book a flight from Denver to Lisbon (average of $612). Flying from Denver to Lisbon in June is currently the most expensive (average of $1,219). 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
Sintra
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Beja
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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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$491Average$1,243FlexibilityNo cancel feeOn-time72%
KLMCheapest$550Average$843FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$555Average$662FlexibilityNo cancel feeOn-time77%
DeltaCheapest$559Average$938FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$567Average$890FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$569Average$934FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$583Average$654FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$627Average$1,001FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$632Average$1,150FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$671Average$1,149FlexibilityNo cancel feeOn-time69%
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