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$345+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — DEN
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$837
(United Airlines)

One-way from

$345
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$887
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. 19% potential increase in price ($239 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 28, 2025.

This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/277:10 amLIS - DEN
1 stop16h 15mAmerican Airlines
Fri 10/36:35 pmDEN - LIS
1 stop16h 30mAmerican Airlines
Deal found 3/27$800
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/275:40 amLIS - DEN
2 stops19h 58mDelta
Fri 10/36:30 amDEN - LIS
2 stops19h 20mDelta
Deal found 3/27$819
This British Airways deal was found by Cheapflights users on 3/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2712:30 pmLIS - DEN
2 stops18h 05mBritish Airways
Fri 10/36:35 pmDEN - LIS
1 stop21h 35mBritish Airways
Deal found 3/27$821
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1111:25 amLIS - DEN
1 stop30h 02mUnited Airlines
Sun 5/184:15 pmDEN - LIS
1 stop22h 35mUnited Airlines
Deal found 3/27$837
This Expedia deal was found by Cheapflights users on 3/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1012:30 pmLIS - DEN
2 stops18h 29mIberia
Sat 5/173:49 pmDEN - LIS
2 stops24h 36mIberia
Deal found 3/27$856
This Mytrip deal was found by Cheapflights users on 3/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/106:10 amLIS - DEN
3 stops42h 17mMultiple Airlines
Sat 5/1712:15 pmDEN - LIS
2 stops26h 30mMultiple Airlines
Deal found 3/27$927
This Cheapflightsfares deal was found by Cheapflights users on 3/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/75:05 amLIS - DEN
2 stops18h 30mLufthansa
Fri 9/126:00 pmDEN - LIS
2 stops20h 55mLufthansa
Deal found 3/28$929
This Mytrip deal was found by Cheapflights users on 3/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/114:05 amFNC - DEN
3 stops21h 50mMultiple Airlines
Sun 5/184:40 pmDEN - FNC
2 stops22h 55mMultiple Airlines
Deal found 3/26$954
This SWISS deal was found by Cheapflights users on 3/27. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/115:55 amLIS - DEN
2 stops39h 15mSWISS
Sun 5/185:50 pmDEN - LIS
2 stops36h 55mSWISS
Deal found 3/27$1,083
This oojo deal was found by Cheapflights users on 3/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/114:00 pmFNC - DEN
2 stops28h 45mLufthansa
Sun 5/184:15 pmDEN - FNC
2 stops39h 25mLufthansa
Deal found 3/26$1,154
This Scandinavian Airlines deal was found by Cheapflights users on 3/27. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/277:15 amLIS - DEN
2 stops22h 04mScandinavian Airlines
Fri 10/36:30 amDEN - LIS
3 stops26h 15mScandinavian Airlines
Deal found 3/27$1,399
This Expedia deal was found by Cheapflights users on 3/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/317:55 amLIS - DEN
2 stops33h 32mAir Canada
Wed 7/169:40 amDEN - LIS
1 stop16h 40mAir Canada
Deal found 3/27$1,852

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 28, 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

Sun 5/11

11:25 am-10:27 am

1 stop30h 02m

Denver Intl

Sun 5/18

4:15 pm-9:50 pm

1 stop22h 35m

$837

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 5/10

12:30 pm-11:59 pm

2 stops18h 29m

Denver Intl

Sat 5/17

3:49 pm-11:25 pm

2 stops24h 36m

$856

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 5/10

6:55 pm-4:25 pm

1 stop28h 30m

Denver Intl

Sat 5/17

3:49 pm-11:25 pm

2 stops24h 36m

$880

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 5/10

6:10 am-5:27 pm

3 stops42h 17m

Denver Intl

Sat 5/17

12:15 pm-9:45 pm

2 stops26h 30m

$927

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 9/7

5:05 am-4:35 pm

2 stops18h 30m

Denver Intl

Fri 9/12

6:00 pm-9:55 pm

2 stops20h 55m

$929

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Sun 5/11

4:05 am-6:55 pm

3 stops21h 50m

Denver Intl

Sun 5/18

4:40 pm-10:35 pm

2 stops22h 55m

$954

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sun 5/11

5:55 am-2:10 pm

2 stops39h 15m

Denver Intl

Sun 5/18

5:50 pm-1:45 pm

2 stops36h 55m

$1,083

FunchalDenver

FNC - DEN

FNCDEN

Funchal Madeira

Sun 5/11

4:00 pm-1:45 pm

2 stops28h 45m

Denver Intl

Sun 5/18

4:15 pm-2:40 pm

2 stops39h 25m

$1,154

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

$1,505

LisbonDenver

LIS - DEN

LISDEN

Lisbon Humberto Delgado

Sat 5/31

7:55 am-10:27 am

2 stops33h 32m

Denver Intl

Wed 7/16

9:40 am-9:20 am

1 stop16h 40m

$1,852

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/28

Showing 1-10 of 20 results
1
2

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 March 28, 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 March 28, 2025.
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
7,896 reviews
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
1,267 reviews
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
1,570 reviews
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
8,603 reviews
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
3,744 reviews
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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?

    $646 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 Turkish Airlines and Finnair, with prices starting from $657 and $684, 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
Lakewood
Black Hawk
Winter Park
Broomfield
Cripple Creek
Silverthorne
Golden
Brighton
Greeley
Frisco
Wheat Ridge
Grand Lake
Idaho Springs
Central City
Copper Mountain
Longmont
Thornton
Limon
Dillon

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Alternative routes for Portugal to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Portugal to Denver

Discover the top 5 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$704Average$944FlexibilityNo cancel feeOn-time70%
DeltaCheapest$758Average$958FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$766Average$912FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$787Average$1,064FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$845Average$930FlexibilityNo cancel feeOn-time71%
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