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Portugal

$349+ 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Apr 1 — Apr 81
Tue 4/1
Tue 4/8
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 March 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$683
(oojo)

One-way from

$361
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$853
Provider with most accurate pricing for Denver Intl-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Lisbon Humberto Delgado flights.
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From Denver Intl to Portugal
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One-way flight from Denver Intl to Portugal
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Highest demand for flights based on searches. 20% potential increase in price ($265 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 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 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 March 27, 2025.

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.
Sat 9/207:50 pmDEN - OPO
1 stop31h 05mTurkish Airlines
Sun 10/55:10 pmOPO - DEN
1 stop31h 45mTurkish Airlines
Deal found 3/26$683
This oojo deal was found by Cheapflights users on 3/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:50 pmDEN - LIS
1 stop30h 50mTurkish Airlines
Wed 10/85:55 amLIS - DEN
1 stop19h 00mTurkish Airlines
Deal found 3/25$694
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/212:32 pmDEN - LIS
2 stops13h 23mMultiple Airlines
Sat 11/86:40 pmLIS - DEN
1 stop27h 45mMultiple Airlines
Deal found 3/26$701
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:25 amDEN - LIS
1 stop14h 55mAir Canada
Tue 12/2311:00 amLIS - DEN
2 stops34h 57mAir Canada
Deal found 3/26$720
This Gurufare deal was found by Cheapflights users on 3/25. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/275:40 pmDEN - OPO
1 stop15h 00mMultiple Airlines
Sat 5/1012:15 pmOPO - DEN
1 stop35h 05mMultiple Airlines
Deal found 3/25$725
This Gurufare deal was found by Cheapflights users on 3/25. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/214:05 pmDEN - OPO
1 stop24h 20mLufthansa
Mon 4/286:15 amOPO - DEN
1 stop15h 05mLufthansa
Deal found 3/25$726
This United deal was found by Cheapflights users on 3/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3011:25 amDEN - LIS
1 stop14h 55mUnited Airlines
Fri 12/1211:00 amLIS - DEN
2 stops34h 23mUnited Airlines
Deal found 3/25$726
This Air Canada deal was found by Cheapflights users on 3/25. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1611:50 amDEN - OPO
2 stops20h 55mAir Canada
Fri 10/248:40 amOPO - DEN
2 stops21h 02mAir Canada
Deal found 3/25$728
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/227:25 amDEN - LIS
1 stop18h 40mAmerican Airlines
Wed 10/2911:15 amLIS - DEN
2 stops18h 23mAmerican Airlines
Deal found 3/26$731
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/233:40 pmDEN - LIS
2 stops23h 30mIcelandair
Sun 12/149:20 pmLIS - DEN
1 stop27h 45mIcelandair
Deal found 3/26$733
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/912:55 amDEN - LIS
2 stops25h 05mDelta
Tue 12/2310:00 amLIS - DEN
1 stop19h 56mDelta
Deal found 3/26$746
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1512:55 pmDEN - LIS
2 stops19h 45mFinnair
Tue 10/214:30 pmLIS - DEN
2 stops32h 12mFinnair
Deal found 3/26$751

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 March 27, 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

Sat 9/20

7:50 pm-9:55 am

1 stop31h 05m

Porto

Sun 10/5

5:10 pm-5:55 pm

1 stop31h 45m

$683

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 4/27

5:40 pm-3:40 pm

1 stop15h 00m

Porto

Sat 5/10

12:15 pm-4:20 pm

1 stop35h 05m

$725

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 4/21

4:05 pm-11:25 pm

1 stop24h 20m

Porto

Mon 4/28

6:15 am-2:20 pm

1 stop15h 05m

$726

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Fri 5/2

4:40 pm-7:00 pm

2 stops19h 20m

Lisbon Humberto Delgado

Thu 5/15

10:10 pm-6:55 pm

3 stops27h 45m

$773

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 4/27

5:40 pm-3:30 pm

1 stop14h 50m

Porto

Sat 5/10

6:40 am-8:39 pm

2 stops20h 59m

$781

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 8/27

12:59 pm-5:05 pm

2 stops45h 06m

Porto

Fri 9/5

5:55 pm-9:41 pm

2 stops34h 46m

$789

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Wed 4/23

6:35 pm-11:10 pm

1 stop21h 35m

Lisbon Humberto Delgado

Tue 4/29

11:05 am-10:06 pm

1 stop18h 01m

$811

DenverLisbon

DEN - LIS

DENLIS

Denver Intl

Sun 5/18

7:50 pm-3:30 pm

1 stop36h 40m

Lisbon Humberto Delgado

Wed 6/4

4:30 pm-5:55 pm

1 stop32h 25m

$822

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Sun 4/27

4:05 pm-3:05 pm

1 stop16h 00m

Faro

Tue 5/6

3:55 pm-1:45 pm

1 stop28h 50m

$823

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 4/21

12:15 pm-3:35 pm

2 stops20h 20m

Porto

Mon 4/28

6:35 am-9:32 pm

2 stops21h 57m

$841

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 56 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 $1,213). 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 March 27, 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 March 27, 2025.
See what other customers who have flown with Delta, KLM and SWISS 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
7,895 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,895 reviews
Delta
8.0
Very good
7,895 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,319 reviews
Delta
8.0
Very good
7,895 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,569 reviews
Delta
8.0
Very good
7,895 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,424 reviews
Delta
8.0
Very good
7,895 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,603 reviews
Delta
8.0
Very good
7,895 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 United Airlines ($512), Scandinavian Airlines ($544), and British Airways ($549).

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

    Most travelers choose Denver Intl - Lisbon Humberto Delgado, Denver Intl - Porto or Denver Intl - Funchal Madeira 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 $1,213). 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 March 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$491Average$1,243FlexibilityNo cancel feeOn-time72%
KLMCheapest$516Average$910FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$555Average$659FlexibilityNo cancel feeOn-time77%
DeltaCheapest$559Average$1,051FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$569Average$923FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$577Average$914FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$583Average$654FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$632Average$1,145FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$635Average$991FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$662Average$1,186FlexibilityNo cancel feeOn-time76%
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