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Portugal

$272+ Cheap flights from Denver (DEN) to Portugal

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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Denver to Portugal

Keep the following information in mind while searching for Denver to Portugal flight deals. Data was last updated June 12, 2025.

Round-trip from

$721
(Booking.com)

One-way from

$272
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,411
From Denver Intl to Portugal
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One-way flight from Denver Intl to Portugal
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($193 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Denver to Portugal

Cheapest flights from Denver to Portugal
Explore the most affordable flight options available from Denver to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/10. 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.
Mon 12/15:50 pmDEN - OPO
1 stop21h 35mLufthansa
Wed 12/176:00 amOPO - DEN
1 stop17h 00mLufthansa
Deal found 6/10$598
This Booking.com deal was found by Cheapflights users on 6/10. 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 12/111:15 amDEN - OPO
2 stops17h 25mMultiple Airlines
Wed 12/176:00 amOPO - DEN
1 stop17h 00mMultiple Airlines
Deal found 6/10$600
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Mon 12/111:25 amDEN - OPO
2 stops20h 30mUnited Airlines
Wed 12/176:00 amOPO - DEN
2 stops18h 53mUnited Airlines
Deal found 6/10$616
This Delta deal was found by Cheapflights users on 6/10. 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.
Mon 12/17:10 amDEN - OPO
2 stops20h 40mDelta
Wed 12/175:00 amOPO - DEN
2 stops17h 30mDelta
Deal found 6/10$639
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 10/107:55 pmDEN - FAO
1 stop18h 40mMultiple Airlines
Fri 10/179:05 amFAO - DEN
1 stop15h 54mMultiple Airlines
Deal found 6/11$667
This Air Canada deal was found by Cheapflights users on 6/11. 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.
Mon 10/1311:35 amDEN - OPO
2 stops21h 10mAir Canada
Tue 10/216:00 amOPO - DEN
2 stops33h 42mAir Canada
Deal found 6/11$680
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/101:25 pmDEN - PDL
2 stops13h 15mUnited Airlines
Tue 7/1511:00 amPDL - DEN
1 stop14h 15mUnited Airlines
Deal found 6/11$755
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/1012:35 pmDEN - FAO
1 stop14h 20mUnited Airlines
Wed 8/203:25 pmFAO - DEN
1 stop31h 10mUnited Airlines
Deal found 6/11$758
This KAYAK deal was found by Cheapflights users on 6/11. 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.
Thu 8/2112:10 pmDEN - OPO
2 stops21h 55mScandinavian Airlines
Wed 10/111:50 amOPO - DEN
2 stops42h 08mScandinavian Airlines
Deal found 6/11$794
This FlightHub deal was found by Cheapflights users on 6/10. 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.
Wed 10/84:15 pmDEN - FAO
1 stop15h 50mLufthansa
Wed 11/122:10 pmFAO - DEN
1 stop31h 25mLufthansa
Deal found 6/10$797
This Expedia deal was found by Cheapflights users on 6/10. 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 10/146:35 pmDEN - FAO
1 stop17h 35mBritish Airways
Tue 10/213:35 pmFAO - DEN
1 stop31h 50mBritish Airways
Deal found 6/10$799
This Air Canada deal was found by Cheapflights users on 6/10. 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.
Sun 10/127:21 pmDEN - FAO
2 stops36h 09mAir Canada
Tue 10/213:55 pmFAO - DEN
2 stops57h 23mAir Canada
Deal found 6/10$804

Cheapflights Fare Finder

Customize your flight search to find flights from Denver to Portugal 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 June 12, 2025.
Use the filters below to find and compare flights from Denver to Portugal that are best for you.

Fly from

Denver

Fly to

Portugal

Route

Depart

Return

Price

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 12/1

5:50 pm-10:25 pm

1 stop21h 35m

Porto

Wed 12/17

6:00 am-4:00 pm

1 stop17h 00m

$598

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 12/1

11:15 am-11:40 am

2 stops17h 25m

Porto

Wed 12/17

6:00 am-4:00 pm

1 stop17h 00m

$600

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 12/1

11:25 am-2:55 pm

2 stops20h 30m

Porto

Wed 12/17

6:00 am-5:53 pm

2 stops18h 53m

$616

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 12/1

7:10 am-10:50 am

2 stops20h 40m

Porto

Wed 12/17

5:00 am-3:30 pm

2 stops17h 30m

$639

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 10/13

11:35 am-3:45 pm

2 stops21h 10m

Porto

Tue 10/21

6:00 am-8:42 am

2 stops33h 42m

$680

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Sun 8/10

10:41 am-9:55 am

1 stop16h 14m

Faro

Tue 8/19

7:10 pm-4:20 pm

1 stop28h 10m

$746

DenverPonta Delgada

DEN - PDL

DENPDL

Denver Intl

Thu 7/10

1:25 pm-8:40 am

2 stops13h 15m

Ponta Delgada Nordela

Tue 7/15

11:00 am-7:15 pm

1 stop14h 15m

$755

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Sun 8/10

12:35 pm-9:55 am

1 stop14h 20m

Faro

Wed 8/20

3:25 pm-3:35 pm

1 stop31h 10m

$758

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Thu 8/21

12:10 pm-5:05 pm

2 stops21h 55m

Porto

Wed 10/1

11:50 am-10:58 pm

2 stops42h 08m

$794

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sat 9/6

7:50 pm-3:50 pm

1 stop37h 00m

Porto

Wed 9/17

10:50 am-5:55 pm

1 stop38h 05m

$807

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 53 results
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Best time to book a flight from Denver to Portugal

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

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

Currently, January is the cheapest month in which you can book a flight from Denver to Portugal (average of $612). Flying from Denver to Portugal in June is currently the most expensive (average of $1,136). 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 DEN to PT?

Find hourly flight availability from Denver to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

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

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, 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 51.8 F).

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated June 12, 2025.
See what other customers who have flown with Delta, KLM and Austrian Airlines from Denver to Portugal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Denver to Portugal. 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 from for flights from Denver to Portugal?

    Most people fly from Denver Intl (DEN) if they book a flight from Denver to Portugal. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

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

    The cheapest airlines for a one-way flight from Denver to Portugal are Icelandair ($419), Air Canada ($535), and Aer Lingus ($546).

  • What are the most popular routes from Denver to Portugal?

    Most travelers choose Denver Intl - Lisbon Humberto Delgado, Denver Intl - Porto or Denver Intl - Faro when deciding on the best route from Denver to Portugal.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Denver to Portugal (average of $612). Flying from Denver to Portugal in June is currently the most expensive (average of $1,136). 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

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Alternative routes for Denver to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Denver to Portugal

Discover the top 10 airlines that operate flights from Denver to Portugal. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$458Average$662FlexibilityNo cancel feeOn-time76%
KLMCheapest$516Average$815FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$539Average$1,177FlexibilityNo cancel feeOn-time72%
DeltaCheapest$551Average$1,057FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$553Average$940FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$555Average$686FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$569Average$904FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$619Average$1,047FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$627Average$951FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$652Average$1,163FlexibilityNo cancel feeOn-time71%

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