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$444+ Cheap flights from Portugal 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
May 30 — Jun 61
Sat 5/30
Sat 6/6
1 adult, Economy
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Cheap flight deals from Portugal to Denver

Cheapest flights from Portugal to Denver
Explore the most affordable flight options available from Portugal to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/510:15 pm
LIS
-
DEN
1 stop27h 00m
Aer Lingus
Sat 6/208:00 pm
DEN
-
LIS
1 stop18h 35m
Aer Lingus
Deal found 4/26$690
This FlightHub deal was found by Cheapflights users on 4/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/223:00 pm
LIS
-
DEN
1 stop35h 00m
Icelandair
Wed 11/253:40 pm
DEN
-
LIS
1 stop14h 10m
Icelandair
Deal found 4/25$922
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:40 am
LIS
-
DEN
1 stop18h 35m
Multiple Airlines
Sun 5/108:00 pm
DEN
-
LIS
1 stop19h 05m
Multiple Airlines
Deal found 4/26$936
This Gotogate deal was found by Cheapflights users on 4/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/510:15 pm
LIS
-
DEN
1 stop27h 00m
Multiple Airlines
Sat 6/208:00 pm
DEN
-
LIS
1 stop18h 35m
Multiple Airlines
Deal found 4/27$937
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:40 am
LIS
-
DEN
1 stop18h 35m
Multiple Airlines
Mon 5/118:00 pm
DEN
-
LIS
1 stop15h 55m
Multiple Airlines
Deal found 4/26$939
This Delta deal was found by Cheapflights users on 4/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:00 am
LIS
-
DEN
2 stops22h 04m
Delta
Tue 5/125:40 pm
DEN
-
LIS
1 stop17h 10m
Delta
Deal found 4/26$950
This Air France 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/125:35 am
LIS
-
DEN
1 stop17h 05m
Air France
Fri 6/195:40 pm
DEN
-
LIS
1 stop32h 10m
Air France
Deal found 4/28$953
This KLM deal was found by Cheapflights users on 4/26. 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.
Wed 5/65:00 am
LIS
-
DEN
2 stops17h 36m
KLM
Mon 5/1111:30 am
DEN
-
LIS
2 stops16h 25m
KLM
Deal found 4/26$956
This Air France deal was found by Cheapflights users on 4/26. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:35 am
LIS
-
DEN
2 stops18h 46m
Air France
Tue 5/125:40 pm
DEN
-
LIS
1 stop21h 45m
Air France
Deal found 4/26$957
This Air France deal was found by Cheapflights users on 4/26. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:35 am
LIS
-
DEN
2 stops18h 20m
Multiple Airlines
Mon 5/1111:30 am
DEN
-
LIS
2 stops16h 25m
Multiple Airlines
Deal found 4/26$962
This KLM deal was found by Cheapflights users on 4/26. 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.
Mon 5/410:00 am
LIS
-
DEN
1 stop16h 42m
Multiple Airlines
Tue 5/125:40 pm
DEN
-
LIS
1 stop14h 15m
Multiple Airlines
Deal found 4/26$968
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/119:40 am
FNC
-
DEN
1 stop14h 13m
United Airlines
Sun 9/139:25 pm
DEN
-
FNC
2 stops50h 40m
United Airlines
Deal found 4/29$1,021

Find flight deals from Portugal to Denver

Keep the following information in mind while searching for Portugal to Denver flight deals. Data was last updated April 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$690
(Kiwi.com)

One-way from

$444
(Kiwi.com)

Popular in

April

Cheapest in

November

Average price

$1,306
Provider with most accurate pricing for Lisbon Humberto Delgado-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Denver Intl flights.
Search Deals
From Portugal to Denver Intl
Search Deals
One-way flight from Portugal to Denver Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($97 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal 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 30, 2026.
Use the filters below to find and compare flights from Portugal to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 6/5

5:00 am-3:36 pm

2 stops17h 36m

Denver Intl

Sat 6/20

5:40 pm-10:25 pm

1 stop21h 45m

$949

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 5/17

5:35 am-3:40 pm

1 stop17h 05m

Denver Intl

Wed 6/3

5:40 pm-10:25 pm

1 stop21h 45m

$950

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 10/21

6:45 am-3:40 pm

1 stop15h 55m

Denver Intl

Wed 11/25

11:15 am-10:15 am

1 stop16h 00m

$996

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 10/22

5:05 am-3:40 pm

1 stop17h 35m

Denver Intl

Tue 11/24

11:15 am-9:50 am

2 stops15h 35m

$999

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Wed 10/21

6:45 am-3:40 pm

1 stop15h 55m

Denver Intl

Tue 11/24

11:15 am-9:50 am

2 stops15h 35m

$999

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 10/2

5:05 am-3:40 pm

1 stop17h 35m

Denver Intl

Fri 10/30

8:17 am-9:50 am

2 stops19h 33m

$999
Quickest round-trip

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 10/23

6:15 am-2:20 pm

1 stop15h 05m

Denver Intl

Tue 11/24

11:15 am-10:15 am

1 stop16h 00m

$1,009

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 10/2

5:35 am-6:34 pm

2 stops19h 59m

Denver Intl

Fri 10/30

6:05 am-8:00 am

2 stops19h 55m

$1,017

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Fri 9/11

9:40 am-4:53 pm

1 stop14h 13m

Denver Intl

Sun 9/13

9:25 pm-7:05 am

2 stops50h 40m

$1,021

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 6/12

7:25 am-12:30 am

2 stops24h 05m

Denver Intl

Fri 6/19

3:35 pm-9:20 am

2 stops58h 45m

$1,052

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 26 resultsSorted by cheapest first
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Best time to book a flight from Portugal to Denver

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

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

Currently, May is the cheapest month in which you can book a flight from Portugal to Denver (average of $737). Flying from Portugal to Denver in July is currently the most expensive (average of $910). 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.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Denver from Portugal?

    For a flight from Portugal to Denver, you will be flying into Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city.

  • How long is the flight from Portugal to Denver?

    Airlines like Aer Lingus, Icelandair, and United Airlines fly from Portugal to Denver in about 14h 13m. The time it takes to get you to your destination can typically vary by up to 20h 47m. The distance from Portugal to Denver is about 4715 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    $562 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on American Airlines and Aer Lingus, with prices starting from $565 and $600, respectively.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from Portugal to Denver (average of $737). Flying from Portugal to Denver in July is currently the most expensive (average of $910). 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
Thornton
Black Hawk
Lakewood
Westminster
Broomfield
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Fort Morgan
Glendale
Evergreen

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