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$389+ 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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$746
(Gotogate)

One-way from

$389
(Kiwi.com)

Popular in

August

Cheapest in

October

Average price

$932
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 May 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 May 1, 2025.

This Gotogate deal was found by Cheapflights users on 4/30. 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
Sun 6/226:35 pmDEN - LIS
1 stop21h 30mBritish Airways
Deal found 4/30$746
This Iberia deal was found by Cheapflights users on 4/30. 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 stops24h 09mMultiple Airlines
Sun 6/226:35 pmDEN - LIS
1 stop21h 30mMultiple Airlines
Deal found 4/30$750
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Tue 6/1011:05 amLIS - DEN
2 stops28h 18mAmerican Airlines
Mon 6/232:00 pmDEN - LIS
1 stop12h 05mAmerican Airlines
Deal found 4/30$786
This Delta deal was found by Cheapflights users on 4/30. 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 6/105:00 amLIS - DEN
2 stops19h 18mDelta
Mon 6/237:10 amDEN - LIS
2 stops18h 40mDelta
Deal found 4/30$822
This KLM deal was found by Cheapflights users on 4/30. 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 6/95:00 amLIS - DEN
2 stops17h 34mKLM
Sun 6/2211:03 amDEN - LIS
2 stops16h 52mKLM
Deal found 4/30$851
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Tue 6/35:05 amLIS - DEN
1 stop17h 30mUnited Airlines
Sat 6/710:07 amDEN - LIS
2 stops15h 13mUnited Airlines
Deal found 5/1$948
This Flysmarter deal was found by Cheapflights users on 4/30. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/144:50 pmFNC - DEN
2 stops27h 55mMultiple Airlines
Sat 6/217:45 amDEN - FNC
1 stop18h 00mMultiple Airlines
Deal found 4/30$950
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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.
Sun 9/75:05 amLIS - DEN
2 stops21h 33mLufthansa
Fri 9/126:00 pmDEN - LIS
2 stops21h 05mLufthansa
Deal found 4/30$978
This Kissandfly.com deal was found by Cheapflights users on 4/30. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/144:50 pmFNC - DEN
1 stop27h 35mLufthansa
Sat 6/216:04 amDEN - FNC
1 stop19h 41mLufthansa
Deal found 4/30$1,157
This SWISS deal was found by Cheapflights users on 4/30. 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.
Sat 6/1410:05 amFNC - DEN
2 stops61h 18mSWISS
Sat 6/211:25 pmDEN - FNC
2 stops60h 50mSWISS
Deal found 4/30$1,168
This Gurufare deal was found by Cheapflights users on 5/1. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/410:15 pmLIS - DEN
1 stop26h 44mAer Lingus
Fri 6/67:55 pmDEN - LIS
1 stop18h 40mAer Lingus
Deal found 5/1$1,224
This Scandinavian Airlines deal was found by Cheapflights users on 4/30. 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.
Mon 8/187:15 amLIS - DEN
2 stops21h 26mScandinavian Airlines
Fri 9/57:00 amDEN - LIS
3 stops25h 45mScandinavian Airlines
Deal found 4/30$1,438

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 May 1, 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

Sun 6/22

6:35 pm-11:05 pm

1 stop21h 30m

$746

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 6/9

8:25 am-11:44 pm

2 stops22h 19m

Denver Intl

Sun 6/22

6:35 pm-11:05 pm

1 stop21h 30m

$750

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 6/10

11:05 am-8:23 am

2 stops28h 18m

Denver Intl

Mon 6/23

2:00 pm-9:05 am

1 stop12h 05m

$786

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 6/10

5:00 am-5:18 pm

2 stops19h 18m

Denver Intl

Mon 6/23

7:10 am-8:50 am

2 stops18h 40m

$822

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Mon 6/9

5:00 am-3:34 pm

2 stops17h 34m

Denver Intl

Sun 6/22

11:03 am-10:55 am

2 stops16h 52m

$851

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Tue 6/3

6:45 am-3:35 pm

1 stop15h 50m

Denver Intl

Sat 6/7

12:25 pm-8:20 am

1 stop12h 55m

$948

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Sat 6/14

4:50 pm-1:45 pm

2 stops27h 55m

Denver Intl

Sat 6/21

7:45 am-8:45 am

1 stop18h 00m

$950

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 9/7

5:05 am-7:38 pm

2 stops21h 33m

Denver Intl

Fri 9/12

6:00 pm-10:05 pm

2 stops21h 05m

$978

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Sat 6/14

4:50 pm-1:25 pm

1 stop27h 35m

Denver Intl

Sat 6/21

6:04 am-8:45 am

1 stop19h 41m

$1,157

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Sat 6/14

10:05 am-4:23 pm

2 stops61h 18m

Denver Intl

Sat 6/21

1:25 pm-9:15 am

2 stops60h 50m

$1,168

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 26 results
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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 May 1, 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 May 1, 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair from Portugal to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

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
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

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
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

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
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

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
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

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
Air France
7.4
Good
1,448 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

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 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?

    $586 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 $615 and $691, 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
Thornton
Greeley
Frisco
Grand Lake
Broomfield
Central City
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs
Limon

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Alternative routes for Portugal to Denver

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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 May 1, 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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