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$388+ 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 6/19. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Apr 30 — May 71
Wed 4/30
Wed 5/7
1 adult, Economy
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Cheap 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 25, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$768
(Gotogate)

One-way from

$388
(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 Portugal to Denver Intl
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One-way flight from Portugal 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 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 25, 2025.

This Gotogate 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 Gotogate 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
Tue 6/246:35 pmDEN - LIS
1 stop16h 20mBritish Airways
Deal found 4/25$768
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/96:35 amLIS - DEN
2 stops20h 39mMultiple Airlines
Tue 6/246:35 pmDEN - LIS
1 stop16h 20mMultiple Airlines
Deal found 4/25$771
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/911:05 amLIS - DEN
2 stops16h 09mAmerican Airlines
Tue 6/247:21 amDEN - LIS
2 stops18h 44mAmerican Airlines
Deal found 4/25$784
This lol.travel 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1112:20 pmLIS - DEN
1 stop14h 18mLufthansa
Thu 5/154:15 pmDEN - LIS
1 stop22h 35mLufthansa
Deal found 4/25$945
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/76:35 amLIS - DEN
2 stops24h 00mIberia
Fri 9/129:03 amDEN - LIS
2 stops19h 47mIberia
Deal found 4/25$978
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/912:35 pmFNC - DEN
2 stops42h 37mMultiple Airlines
Mon 6/165:50 pmDEN - FNC
1 stop32h 45mMultiple Airlines
Deal found 4/25$1,113
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/211:25 amLIS - DEN
1 stop13h 55mUnited Airlines
Fri 5/28:57 pmDEN - LIS
2 stops30h 38mUnited Airlines
Deal found 4/25$1,358
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/275:40 amLIS - DEN
1 stop16h 50mAir France
Sun 4/275:40 pmDEN - LIS
1 stop21h 30mAir France
Deal found 4/25$1,487
This Scandinavian Airlines 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 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 04mScandinavian Airlines
Fri 9/126:30 amDEN - LIS
3 stops26h 15mScandinavian Airlines
Deal found 4/25$2,146
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/275:55 amLIS - DEN
2 stops18h 40mSWISS
Sun 4/278:15 pmDEN - LIS
2 stops35h 30mSWISS
Deal found 4/25$3,449

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 25, 2025.
Use the filters below to find and compare flights from Portugal to Denver that are best for you.

Fly from

Portugal

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

Tue 6/24

6:35 pm-5:55 pm

1 stop16h 20m

$768

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 6/9

6:35 am-8:14 pm

2 stops20h 39m

Denver Intl

Tue 6/24

6:35 pm-5:55 pm

1 stop16h 20m

$771

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 6/9

11:05 am-8:14 pm

2 stops16h 09m

Denver Intl

Tue 6/24

7:21 am-9:05 am

2 stops18h 44m

$784

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 5/11

12:20 pm-7:38 pm

1 stop14h 18m

Denver Intl

Thu 5/15

4:15 pm-9:50 pm

1 stop22h 35m

$945

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 9/7

6:35 am-11:35 pm

2 stops24h 00m

Denver Intl

Fri 9/12

9:03 am-11:50 am

2 stops19h 47m

$978

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Mon 6/9

12:35 pm-12:12 am

2 stops42h 37m

Denver Intl

Mon 6/16

5:50 pm-9:35 am

1 stop32h 45m

$1,113

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 9/7

7:15 am-10:19 pm

2 stops22h 04m

Denver Intl

Fri 9/12

6:30 am-3:45 pm

3 stops26h 15m

$2,146

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Thu 6/19

3:00 pm-3:43 pm

2 stops55h 43m

$388

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Fri 5/2

10:15 pm-5:59 pm

1 stop26h 44m

$578

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 10/6

5:35 pm-10:13 pm

1 stop35h 38m

$633

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 19 results
1
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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, October is the cheapest month in which you can book a flight from Portugal to Denver (average of $197). Flying from Portugal 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.

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

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portugal to Denver as you normally would.

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 25, 2025.
United Airlines
7.4
Good
8,685 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,685 reviews
United Airlines
7.4
Good
8,685 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Turkish Airlines
7.3
Good
3,776 reviews
United Airlines
7.4
Good
8,685 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Scandinavian Airlines
7.3
Good
1,345 reviews
United Airlines
7.4
Good
8,685 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,685 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
TAP AIR PORTUGAL
7.1
Good
1,846 reviews
United Airlines
7.4
Good
8,685 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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.

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

    $578 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on TAP AIR PORTUGAL and Turkish Airlines, with prices starting from $633 and $694, 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, October is the cheapest month in which you can book a flight from Portugal to Denver (average of $197). Flying from Portugal 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 Portugal?

Book flights to Portugal 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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Top 4 airlines flying from Portugal to Denver

Discover the top 4 airlines 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 April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$749Average$925FlexibilityNo cancel feeOn-time70%
DeltaCheapest$758Average$958FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$766Average$932FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$875Average$940FlexibilityNo cancel feeOn-time71%

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