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$370+ Cheap flights from Lisbon (LIS) to Denver (DEN)

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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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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

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Cheapflights Tip: The best prices from Lisbon Humberto Delgado to Denver Intl are usually found in October or February, booked 43 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Lisbon to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Lisbon (LIS) to Denver (DEN). 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 April 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$769
(Booking.com)

One-way from

$370
(Kiwi.com)

Popular in

August

Cheapest in

October

Average price

$943
Provider with most accurate pricing for Lisbon Humberto Delgado-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Denver Intl flights.
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From Lisbon Humberto Delgado to Denver Intl
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One-way flight from Lisbon Humberto Delgado to Denver Intl
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Highest demand for flights based on searches. 15% potential increase in price ($173 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Lisbon to Denver

Cheapest flights from Lisbon to Denver
Explore the most affordable flight options available from Lisbon to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This Booking.com deal was found by Cheapflights users on 4/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/911:05 amLIS - DEN
1 stop17h 13mBritish Airways
Mon 6/236:35 pmDEN - LIS
1 stop16h 20mBritish Airways
Deal found 4/28$769
This Iberia deal was found by Cheapflights users on 4/28. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/98:25 amLIS - DEN
2 stops22h 19mMultiple Airlines
Mon 6/236:35 pmDEN - LIS
1 stop21h 35mMultiple Airlines
Deal found 4/28$771
This American Airlines deal was found by Cheapflights users on 4/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/911:05 amLIS - DEN
1 stop17h 13mAmerican Airlines
Mon 6/232:00 pmDEN - LIS
1 stop12h 05mAmerican Airlines
Deal found 4/28$784
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/95:00 amLIS - DEN
2 stops17h 34mDelta
Mon 6/2312:50 pmDEN - LIS
2 stops19h 00mDelta
Deal found 4/28$820
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/195:00 amLIS - DEN
2 stops19h 14mAir Canada
Thu 11/2711:15 amDEN - LIS
1 stop15h 05mAir Canada
Deal found 4/28$844
This Lufthansa deal was found by Cheapflights users on 4/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:10 amLIS - DEN
1 stop15h 30mLufthansa
Wed 11/263:55 pmDEN - LIS
1 stop11h 20mLufthansa
Deal found 4/28$857
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/165:00 amLIS - DEN
1 stop17h 55mUnited Airlines
Sun 11/3011:25 amDEN - LIS
1 stop14h 55mUnited Airlines
Deal found 4/28$864
This KLM deal was found by Cheapflights users on 4/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/195:00 amLIS - DEN
2 stops19h 29mKLM
Fri 11/2812:20 pmDEN - LIS
1 stop12h 40mKLM
Deal found 4/28$869
This SWISS deal was found by Cheapflights users on 4/28. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1712:15 pmLIS - DEN
2 stops40h 10mSWISS
Tue 11/2511:15 amDEN - LIS
2 stops37h 55mSWISS
Deal found 4/28$887
This Expedia deal was found by Cheapflights users on 4/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/126:35 amLIS - DEN
2 stops24h 09mIberia
Thu 6/194:36 pmDEN - LIS
2 stops20h 29mIberia
Deal found 4/28$896
This Finnair deal was found by Cheapflights users on 4/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:30 amLIS - DEN
2 stops42h 12mFinnair
Thu 11/275:30 pmDEN - LIS
1 stop35h 40mFinnair
Deal found 4/28$1,072
This Scandinavian Airlines deal was found by Cheapflights users on 4/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/77:15 amLIS - DEN
2 stops22h 41mScandinavian Airlines
Fri 9/126:30 amDEN - LIS
3 stops26h 15mScandinavian Airlines
Deal found 4/29$2,145

Cheapflights Fare Finder

Customize your flight search to find flights from Lisbon to Denver 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 April 29, 2025.
Use the filters below to find and compare flights from Lisbon to Denver that are best for you.

Fly from

Lisbon

Fly to

Denver

Route

Depart

Return

Price

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 6/9

11:05 am-9:18 pm

1 stop17h 13m

Denver Intl

Mon 6/23

6:35 pm-5:55 pm

1 stop16h 20m

$769

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 6/9

8:25 am-11:44 pm

2 stops22h 19m

Denver Intl

Mon 6/23

6:35 pm-11:10 pm

1 stop21h 35m

$771

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 6/9

11:05 am-9:18 pm

1 stop17h 13m

Denver Intl

Mon 6/23

2:00 pm-9:05 am

1 stop12h 05m

$784

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 6/9

5:00 am-3:34 pm

2 stops17h 34m

Denver Intl

Mon 6/23

12:50 pm-2:50 pm

2 stops19h 00m

$820

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 6/12

6:35 am-11:44 pm

2 stops24h 09m

Denver Intl

Thu 6/19

4:36 pm-8:05 pm

2 stops20h 29m

$896

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 6/3

11:25 am-6:20 pm

1 stop13h 55m

Denver Intl

Fri 6/6

4:09 pm-9:15 am

2 stops34h 06m

$950

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 9/7

6:40 am-11:59 pm

2 stops24h 19m

Denver Intl

Fri 9/12

6:00 pm-10:05 pm

2 stops21h 05m

$976

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 6/3

11:25 am-8:05 pm

2 stops15h 40m

Denver Intl

Fri 6/6

8:50 pm-9:15 am

2 stops29h 25m

$994

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 9/7

7:15 am-10:56 pm

2 stops22h 41m

Denver Intl

Fri 9/12

6:30 am-3:45 pm

3 stops26h 15m

$2,145

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 5/28

1:15 pm-9:57 am

2 stops51h 42m

$370

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 22 results
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Compare providers for flights from Lisbon to Denver

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 Lisbon to Denver in April.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 Lisbon-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Lisbon-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Lisbon-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Lisbon-Denver flights, Cheapflights users trust eDreams the most. eDreams 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 Lisbon-Denver 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 Lisbon to Denver

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

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

Use this chart to determine the optimal time to book a round-trip flight from Lisbon to Denver. Price data was last updated on April 25, 2025.

To ensure you get the cheapest price possible for a flight from Lisbon to Denver, you should look to book at least 42 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, October is the cheapest month in which you can book a flight from Lisbon to Denver (average of $197). Flying from Lisbon to Denver in March is currently the most expensive (average of $278). 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.

Rainfall in Denver by month

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

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Temperature in Denver by month

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

If weather is an important factor for your trip to Denver, 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 30.2 F).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated April 29, 2025.
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Turkish Airlines
7.3
Good
3,788 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Scandinavian Airlines
7.3
Good
1,349 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

    Currently priced at $769, British Airways will fly you from Lisbon to Denver and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Delta - these airlines can fly you to your destination from $784 and $820, respectively. British Airways is 20% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Lisbon to Denver are Aer Lingus ($579), TAP AIR PORTUGAL ($623), and Turkish Airlines ($691).

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Lisbon to Denver (average of $197). Flying from Lisbon to Denver in March is currently the most expensive (average of $278). 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
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Silverthorne
Brighton
Golden
Greeley
Frisco
Grand Lake
Thornton
Central City
Glendale
Copper Mountain
Wheat Ridge
Longmont
Broomfield
Idaho Springs
Limon

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Alternative routes for Lisbon to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Funchal to Denver flights
Lisbon to Colorado Springs flights

Top 4 airlines flying from Lisbon to Denver

Discover the top 4 airlines that operate flights from Lisbon to Denver. 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$749Average$925FlexibilityNo cancel feeOn-time70%
DeltaCheapest$758Average$958FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$766Average$957FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$875Average$940FlexibilityNo cancel feeOn-time71%

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