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Portugal

$232+ 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$557
(FlightHub)

One-way from

$232
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$985
From Denver Intl to Portugal
Search Deals
One-way flight from Denver Intl to Portugal
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($189 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This FlightHub deal was found by Cheapflights users on 9/10. 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.
Sun 11/91:10 pmDEN - OPO
2 stops20h 35mScandinavian Airlines
Fri 11/145:45 pmOPO - DEN
2 stops35h 53mScandinavian Airlines
Deal found 9/10$557
This Mytrip deal was found by Cheapflights users on 9/9. 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.
Tue 10/78:40 amDEN - OPO
2 stops25h 00mMultiple Airlines
Tue 10/1410:25 pmOPO - DEN
2 stops25h 53mMultiple Airlines
Deal found 9/9$577
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/47:49 amDEN - OPO
2 stops16h 51mAmerican Airlines
Wed 11/128:20 amOPO - DEN
2 stops21h 02mAmerican Airlines
Deal found 9/10$578
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/279:52 amDEN - OPO
2 stops15h 48mAmerican Airlines
Wed 11/128:20 amOPO - DEN
2 stops21h 02mAmerican Airlines
Deal found 9/9$580
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 11/44:20 pmDEN - OPO
1 stop13h 30mLufthansa
Wed 11/126:00 amOPO - DEN
1 stop17h 00mLufthansa
Deal found 9/9$595
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/277:46 amDEN - OPO
2 stops19h 44mUnited Airlines
Wed 11/126:00 amOPO - DEN
1 stop17h 00mUnited Airlines
Deal found 9/9$597
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 11/412:45 pmDEN - OPO
1 stop13h 45mUnited Airlines
Wed 11/126:00 amOPO - DEN
1 stop17h 00mUnited Airlines
Deal found 9/10$600
This Ovago deal was found by Cheapflights users on 9/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:35 pmDEN - OPO
1 stop17h 55mBritish Airways
Tue 11/1112:25 pmOPO - DEN
2 stops40h 57mBritish Airways
Deal found 9/10$601
This Ovago deal was found by Cheapflights users on 9/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/219:20 amDEN - OPO
2 stops27h 10mBritish Airways
Wed 11/128:40 pmOPO - DEN
2 stops32h 42mBritish Airways
Deal found 9/10$606
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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.
Wed 12/34:20 pmDEN - OPO
1 stop13h 55mLufthansa
Wed 12/106:00 amOPO - DEN
1 stop17h 00mLufthansa
Deal found 9/9$610
This Mytrip deal was found by Cheapflights users on 9/9. 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.
Wed 10/224:40 pmDEN - FAO
2 stops22h 10mMultiple Airlines
Wed 10/296:35 amFAO - DEN
2 stops18h 30mMultiple Airlines
Deal found 9/9$652
This Delta deal was found by Cheapflights users on 9/10. 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.
Wed 9/2412:05 pmDEN - LIS
2 stops19h 45mDelta
Tue 10/75:40 amLIS - DEN
1 stop16h 50mDelta
Deal found 9/10$686

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 September 11, 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

Tue 10/7

8:40 am-4:40 pm

2 stops25h 00m

Porto

Tue 10/14

10:25 pm-5:18 pm

2 stops25h 53m

$577

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 11/4

7:49 am-7:40 am

2 stops16h 51m

Porto

Wed 11/12

8:20 am-10:22 pm

2 stops21h 02m

$578

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 10/21

9:20 am-11:40 am

2 stops19h 20m

Porto

Tue 11/4

8:20 am-10:22 pm

2 stops21h 02m

$578

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 11/4

4:20 pm-12:50 pm

1 stop13h 30m

Porto

Wed 11/12

6:00 am-4:00 pm

1 stop17h 00m

$595

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 10/27

7:46 am-9:30 am

2 stops19h 44m

Porto

Wed 11/12

6:00 am-4:00 pm

1 stop17h 00m

$597

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 11/4

12:45 pm-9:30 am

1 stop13h 45m

Porto

Wed 11/12

6:00 am-4:00 pm

1 stop17h 00m

$600

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 10/20

5:00 am-9:45 am

2 stops21h 45m

Porto

Thu 11/13

6:00 am-9:03 pm

2 stops22h 03m

$614

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 10/20

6:00 am-9:45 am

2 stops20h 45m

Porto

Fri 11/14

6:00 am-9:23 pm

2 stops22h 23m

$614

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 10/19

5:00 am-9:45 am

2 stops21h 45m

Porto

Fri 11/14

6:00 am-7:32 pm

2 stops20h 32m

$614

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 10/19

5:00 am-9:45 am

2 stops21h 45m

Porto

Tue 11/11

12:30 pm-9:55 am

2 stops28h 25m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 52 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 $1,127). 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 September 11, 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.

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 September 11, 2025.
See what other customers who have flown with Delta, United Airlines, and Turkish 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
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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!
Turkish Airlines
7.3
Good
3,968 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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!
Lufthansa
6.8
Okay
7,409 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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!
British Airways
6.7
Okay
7,361 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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.

  • How long is the flight from Denver to Portugal?

    For as low as $595, American Airlines can have you in Portugal from Denver in 13h 30m. The distance between Denver and Portugal is about 4747 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 Scandinavian Airlines ($391), British Airways ($522), and KLM ($547).

  • 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 $1,127). 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$458Average$676FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$539Average$1,076FlexibilityNo cancel feeOn-time72%
DeltaCheapest$551Average$956FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$555Average$675FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$569Average$896FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$577Average$897FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$582Average$708FlexibilityNo cancel feeOn-time77%
KLMCheapest$599Average$784FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$618Average$1,043FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$628Average$1,184FlexibilityNo cancel feeOn-time69%

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