Denver

$383+ 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Apr 16 — Apr 231
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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 March 17, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/15. 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 5/19:25 am
LIS
-
DEN
1 stop15h 50m
Multiple Airlines
Sat 5/168:00 pm
DEN
-
LIS
1 stop18h 55m
Multiple Airlines
Deal found 3/15$786
This Rumbo deal was found by Cheapflights users on 3/15. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:15 pm
LIS
-
DEN
2 stops33h 04m
Scandinavian Airlines
Sat 5/166:30 am
DEN
-
LIS
2 stops26h 30m
Scandinavian Airlines
Deal found 3/15$800
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Thu 4/235:05 am
LIS
-
DEN
1 stop15h 30m
United Airlines
Sun 5/37:50 am
DEN
-
LIS
1 stop19h 40m
United Airlines
Deal found 3/12$883
This Lufthansa deal was found by Cheapflights users on 3/13. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:05 am
LIS
-
DEN
1 stop17h 35m
Lufthansa
Tue 5/53:52 pm
DEN
-
LIS
1 stop11h 38m
Lufthansa
Deal found 3/13$884
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:30 am
LIS
-
DEN
2 stops35h 50m
Multiple Airlines
Tue 5/54:05 pm
DEN
-
LIS
1 stop14h 35m
Multiple Airlines
Deal found 3/13$886
This Flighttix deal was found by Cheapflights users on 3/13. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:25 am
LIS
-
DEN
1 stop15h 15m
Lufthansa
Mon 5/43:52 pm
DEN
-
LIS
1 stop11h 38m
Lufthansa
Deal found 3/13$889
This Booking.com deal was found by Cheapflights users on 3/12. 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.
Sun 5/35:05 am
LIS
-
DEN
1 stop15h 30m
Lufthansa
Mon 5/188:25 pm
DEN
-
LIS
1 stop19h 20m
Lufthansa
Deal found 3/12$890
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Thu 11/265:00 am
LIS
-
DEN
1 stop18h 00m
United Airlines
Mon 11/301:45 pm
DEN
-
LIS
1 stop13h 30m
United Airlines
Deal found 3/15$893
This Air Canada deal was found by Cheapflights users on 3/16. 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.
Thu 11/127:55 am
FNC
-
DEN
2 stops19h 00m
Air Canada
Mon 11/161:25 pm
DEN
-
FNC
2 stops17h 10m
Air Canada
Deal found 3/16$1,295
This Expedia deal was found by Cheapflights users on 3/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:45 pm
FNC
-
DEN
2 stops22h 35m
Multiple Airlines
Tue 5/2611:15 am
DEN
-
FNC
2 stops38h 55m
Multiple Airlines
Deal found 3/13$2,099
This KAYAK deal was found by Cheapflights users on 3/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:05 am
FNC
-
DEN
2 stops21h 45m
Lufthansa
Tue 5/266:00 am
DEN
-
FNC
1 stop18h 05m
Lufthansa
Deal found 3/13$2,518

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 March 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$786
(Kiwi.com)

One-way from

$383
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$880
Provider with most accurate pricing for Lisbon Humberto Delgado-Denver Intl flight deals.
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Denver Intl flights.
From Portugal to Denver Intl
One-way flight from Portugal to Denver Intl
Highest demand for flights based on searches. 8% potential increase in price ($87 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
Average for round-trip flights in March 2026

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 March 17, 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 5/1

9:25 am-6:15 pm

1 stop15h 50m

Denver Intl

Sat 5/16

8:00 pm-9:55 pm

1 stop18h 55m

$787

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 4/23

7:25 am-7:29 pm

2 stops19h 04m

Denver Intl

Sun 5/3

5:40 pm-3:30 pm

1 stop14h 50m

$893
Quickest round-trip

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 4/4

5:05 am-3:40 pm

1 stop17h 35m

Denver Intl

Sat 4/18

3:55 pm-10:35 am

1 stop11h 40m

$906

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 5/1

7:25 am-1:35 pm

1 stop37h 10m

Denver Intl

Sat 5/16

6:00 am-10:35 am

1 stop21h 35m

$913

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 4/4

5:00 am-9:46 pm

2 stops23h 46m

Denver Intl

Sat 4/18

6:40 am-8:00 am

1 stop18h 20m

$942

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 5/1

11:25 am-7:00 pm

1 stop14h 35m

Denver Intl

Sat 5/16

4:13 pm-11:45 am

2 stops36h 32m

$954

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 5/1

10:00 am-12:36 am

2 stops21h 36m

Denver Intl

Sat 5/16

9:12 am-8:00 am

2 stops15h 48m

$960

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Tue 5/5

10:45 pm-2:20 pm

2 stops22h 35m

Denver Intl

Tue 5/26

11:15 am-9:10 am

2 stops38h 55m

$2,099

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Tue 5/5

4:05 am-6:50 pm

2 stops21h 45m

Denver Intl

Tue 5/26

6:00 am-7:05 am

1 stop18h 05m

$2,518
Cheapest one-way

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 5/26

9:15 pm-7:13 pm

3 stops52h 58m

$481

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/16

Showing 1-10 of 28 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, April is the cheapest month in which you can book a flight from Portugal to Denver (average of $750). Flying from Portugal to Denver in July is currently the most expensive (average of $935). 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 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 March 17, 2026.
Peruse reviews from past customers who have flown with United Airlines from Portugal to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.7

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Boarding

7.7

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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 United Airlines and Lufthansa fly from Portugal to Denver in about 19h 04m. The time it takes to get you to your destination can typically vary by up to 2h 41m. The distance from Portugal to Denver is about 4826 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, April is the cheapest month in which you can book a flight from Portugal to Denver (average of $750). Flying from Portugal to Denver in July is currently the most expensive (average of $935). 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
Broomfield
Westminster
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Glendale
Manitou Springs
Frisco
Englewood
Fort Morgan
Brighton

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Top airline flying from Portugal to Denver

Discover the top airline that operate flights from Portugal 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 March 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$920Average$1,083FlexibilityNo cancel feeOn-time69%

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