HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Lisbon

$275+ 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 6/23. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
abr. 20 — abr. 271
dom. 4/20
dom. 4/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Lisbon with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Denver Intl to Lisbon Humberto Delgado are usually found in January or February, booked 81 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 abril 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$710
(Air Canada)

One-way from

$275
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$958
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. 19% potential increase in price ($251 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 abril 15, 2025.

This Air Canada deal was found by Cheapflights users on 4/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/2011:25 amDEN - LIS
1 stop14h 55mAir Canada
sáb. 11/2911:00 amLIS - DEN
1 stop30h 35mAir Canada
Deal found 4/14$710
This Iberia deal was found by Cheapflights users on 4/14. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/66:35 pmDEN - LIS
1 stop21h 25mMultiple Airlines
mié. 5/216:35 amLIS - DEN
2 stops23h 58mMultiple Airlines
Deal found 4/14$711
This British Airways deal was found by Cheapflights users on 4/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/66:35 pmDEN - LIS
1 stop16h 20mBritish Airways
mar. 5/2011:05 amLIS - DEN
1 stop17h 48mBritish Airways
Deal found 4/14$713
This Air France deal was found by Cheapflights users on 4/14. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/2410:45 amDEN - LIS
2 stops17h 00mAir France
mié. 10/110:00 amLIS - DEN
1 stop15h 22mAir France
Deal found 4/14$714
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/229:40 amDEN - LIS
2 stops15h 20mDelta
jue. 10/212:45 pmLIS - DEN
2 stops27h 06mDelta
Deal found 4/14$718
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/244:40 pmDEN - LIS
2 stops22h 10mLufthansa
dom. 11/25:00 amLIS - DEN
2 stops25h 18mLufthansa
Deal found 4/14$720
This FlightHub deal was found by Cheapflights users on 4/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/207:35 pmDEN - LIS
1 stop32h 00mTurkish Airlines
vie. 11/284:00 pmLIS - DEN
1 stop32h 40mTurkish Airlines
Deal found 4/14$735
This United deal was found by Cheapflights users on 4/14. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/286:00 amDEN - LIS
1 stop21h 30mUnited Airlines
lun. 5/511:25 amLIS - DEN
2 stops32h 18mUnited Airlines
Deal found 4/14$751
This Finnair deal was found by Cheapflights users on 4/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/3012:53 pmDEN - LIS
2 stops19h 37mFinnair
lun. 10/134:30 pmLIS - DEN
2 stops32h 12mFinnair
Deal found 4/13$758
This American Airlines deal was found by Cheapflights users on 4/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/146:35 pmDEN - LIS
1 stop16h 20mAmerican Airlines
mié. 5/217:20 amLIS - DEN
1 stop16h 05mAmerican Airlines
Deal found 4/13$777
This SWISS deal was found by Cheapflights users on 4/13. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/2111:55 amDEN - LIS
2 stops28h 25mSWISS
lun. 4/283:35 pmLIS - DEN
2 stops31h 55mSWISS
Deal found 4/13$784
This Travelocity deal was found by Cheapflights users on 4/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/254:58 pmDEN - LIS
2 stops16h 07mIberia
lun. 9/298:45 pmLIS - DEN
2 stops32h 42mIberia
Deal found 4/14$796

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 abril 15, 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

mar. 9/23

11:15 am-9:20 am

2 stops15h 05m

Lisbon Humberto Delgado

mar. 9/30

11:25 am-7:54 pm

2 stops15h 29m

$710

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

mar. 5/6

6:35 pm-11:00 pm

1 stop21h 25m

Lisbon Humberto Delgado

mié. 5/21

6:35 am-8:16 pm

2 stops20h 41m

$711

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

mar. 5/6

6:35 pm-5:55 pm

1 stop16h 20m

Lisbon Humberto Delgado

mar. 5/20

11:05 am-9:53 pm

1 stop17h 48m

$713

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

mié. 9/24

10:45 am-10:45 am

2 stops17h 00m

Lisbon Humberto Delgado

mié. 10/1

10:00 am-6:22 pm

1 stop15h 22m

$714

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

lun. 9/22

9:40 am-8:00 am

2 stops15h 20m

Lisbon Humberto Delgado

jue. 10/2

12:45 pm-8:51 am

2 stops27h 06m

$718

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

mar. 5/13

2:45 pm-11:25 pm

2 stops25h 40m

Lisbon Humberto Delgado

mar. 5/20

8:25 am-11:59 pm

2 stops22h 34m

$725

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

lun. 4/28

4:05 pm-1:35 pm

1 stop14h 30m

Lisbon Humberto Delgado

lun. 5/12

7:30 am-3:35 pm

1 stop15h 05m

$744

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

lun. 4/28

6:00 am-10:30 am

1 stop21h 30m

Lisbon Humberto Delgado

lun. 5/5

11:25 am-12:43 pm

2 stops32h 18m

$751

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

mar. 9/30

12:53 pm-3:30 pm

2 stops19h 37m

Lisbon Humberto Delgado

lun. 10/13

4:30 pm-5:42 pm

2 stops32h 12m

$758

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

mié. 5/14

6:35 pm-5:55 pm

1 stop16h 20m

Lisbon Humberto Delgado

mié. 5/21

7:20 am-4:25 pm

1 stop16h 05m

$777

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/13

Showing 1-10 of 24 results
1
2
3

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Denver-Lisbon flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 April 11, 2025.

Booking 81 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 $1,203). 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 abril 15, 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 abril 15, 2025.
See what other customers who have flown with Delta, KLM and Finnair 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
7,917 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
1,323 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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.
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
7.5
Good
1,433 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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.
SWISS
7.5
Good
1,578 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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, Air Canada ($710), British Airways ($713), and Air France ($714) offers the cheapest pricing from Denver to Lisbon. Users have found that Air Canada is 30% 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 $541. However, be on the lookout for offers from British Airways 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 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 $50 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 $55 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 $41 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 $1,203). 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
Almada
Beja
Costa da Caparica
Nazaré
Evora
Torres Vedras
Oeiras
Sesimbra
Fátima

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 abril 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$464Average$654FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$491Average$1,243FlexibilityNo cancel feeOn-time72%
Turkish AirlinesCheapest$555Average$683FlexibilityNo cancel feeOn-time77%
DeltaCheapest$559Average$944FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$569Average$922FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$571Average$854FlexibilityNo cancel feeOn-time70%
KLMCheapest$606Average$836FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$635Average$980FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$652Average$1,161FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$652Average$1,015FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.