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$328+ Cheap flights from Denver (DEN) to Porto (OPO)

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — OPO
Jan 21 — Jan 281
Tue 1/21
Tue 1/28
1 adult, Economy
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The best prices from Denver Intl to Porto are usually found in January or November, booked 29 days in advance, depart on a Monday or Thursday and return on a Wednesday

Cheap flight deals from Denver to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$578
(FlightHub)

One-way from

$351
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$718
Provider with most accurate pricing for Denver Intl-Porto flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Porto flights.
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From Denver Intl to Porto
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One-way flight from Denver Intl to Porto
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High demand for flights, 20% potential price rise
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Best time to find cheap flights, 4% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Denver to Porto

Cheapest flights from Denver to Porto
Explore the most affordable flight options available from Denver to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2025.

This FlightHub deal was found by Cheapflights users on 1/15. 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 3/178:35 pmDEN - OPO
1 stop31h 15mTurkish Airlines
Mon 3/2410:50 amOPO - DEN
1 stop37h 50mTurkish Airlines
Deal found 1/15$578
This Mytrip deal was found by Cheapflights users on 1/16. 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 3/1211:25 amDEN - OPO
2 stops21h 35mMultiple Airlines
Sat 3/159:55 pmOPO - DEN
3 stops29h 58mMultiple Airlines
Deal found 1/16$655
This Cheapflightsfares deal was found by Cheapflights users on 1/16. 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.
Mon 2/245:45 pmDEN - OPO
1 stop21h 40mLufthansa
Fri 3/76:05 amOPO - DEN
2 stops24h 25mLufthansa
Deal found 1/16$700
This American Airlines deal was found by Cheapflights users on 1/15. 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 2/2412:32 pmDEN - OPO
2 stops16h 13mAmerican Airlines
Fri 3/712:25 pmOPO - DEN
2 stops18h 34mAmerican Airlines
Deal found 1/15$702
This United deal was found by Cheapflights users on 1/16. 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.
Wed 3/196:45 pmDEN - OPO
1 stop14h 30mUnited Airlines
Wed 4/212:35 pmOPO - DEN
2 stops25h 24mUnited Airlines
Deal found 1/16$710
This Air Canada deal was found by Cheapflights users on 1/15. 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 3/1911:15 amDEN - OPO
2 stops18h 25mAir Canada
Wed 4/26:00 amOPO - DEN
2 stops33h 51mAir Canada
Deal found 1/15$716
This Gurufare deal was found by Cheapflights users on 1/15. 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 5/712:59 pmDEN - OPO
2 stops45h 06mScandinavian Airlines
Wed 5/1412:05 pmOPO - DEN
2 stops41h 56mScandinavian Airlines
Deal found 1/15$780
This KAYAK deal was found by Cheapflights users on 1/16. 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.
Fri 3/2111:25 amDEN - OPO
2 stops21h 35mBrussels Airlines
Sun 3/3012:35 pmOPO - DEN
1 stop36h 35mBrussels Airlines
Deal found 1/16$833
This SWISS deal was found by Cheapflights users on 1/16. 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 5/115:50 pmDEN - OPO
1 stop34h 35mSWISS
Fri 5/238:40 amOPO - DEN
1 stop14h 40mSWISS
Deal found 1/16$1,005
This Expedia deal was found by Cheapflights users on 1/15. 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 4/87:20 amDEN - OPO
2 stops21h 20mIberia
Wed 4/168:15 amOPO - DEN
2 stops22h 39mIberia
Deal found 1/15$1,012
This Delta deal was found by Cheapflights users on 1/16. 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.
Sun 5/115:40 pmDEN - OPO
1 stop14h 50mDelta
Sat 5/244:20 pmOPO - DEN
2 stops25h 30mDelta
Deal found 1/16$1,102
This KLM deal was found by Cheapflights users on 1/16. 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 5/123:20 pmDEN - OPO
2 stops17h 15mKLM
Sat 5/246:40 amOPO - DEN
2 stops22h 50mKLM
Deal found 1/16$1,121

Find flights from Denver to Porto within your budget

Customize your flight search to find flights from Denver to Porto 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 January 16, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 3/17

8:35 pm-9:50 am

1 stop31h 15m

Porto

Mon 3/24

10:50 am-6:40 pm

1 stop37h 50m

$578

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 3/12

11:25 am-3:00 pm

2 stops21h 35m

Porto

Sat 3/15

9:55 pm-9:53 pm

3 stops29h 58m

$655

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 2/24

5:45 pm-10:25 pm

1 stop21h 40m

Porto

Fri 3/7

6:05 am-11:30 pm

2 stops24h 25m

$700

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Mon 2/24

12:32 pm-11:45 am

2 stops16h 13m

Porto

Fri 3/7

12:25 pm-11:59 pm

2 stops18h 34m

$702

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 3/19

6:45 pm-3:15 pm

1 stop14h 30m

Porto

Wed 4/2

12:35 pm-6:59 am

2 stops25h 24m

$710

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 3/19

11:15 am-11:40 am

2 stops18h 25m

Porto

Wed 4/2

6:00 am-8:51 am

2 stops33h 51m

$716

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Wed 5/7

12:59 pm-5:05 pm

2 stops45h 06m

Porto

Wed 5/14

12:05 pm-11:01 pm

2 stops41h 56m

$780

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Fri 3/21

11:25 am-3:00 pm

2 stops21h 35m

Porto

Sun 3/30

12:35 pm-6:10 pm

1 stop36h 35m

$833

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Sun 5/11

5:50 pm-11:25 am

1 stop34h 35m

Porto

Fri 5/23

8:40 am-4:20 pm

1 stop14h 40m

$1,005

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 4/8

7:20 am-11:40 am

2 stops21h 20m

Porto

Wed 4/16

8:15 am-11:54 pm

2 stops22h 39m

$1,012

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 22 results
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Compare providers for flights from Denver to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Porto in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto 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.

Travel insights for flights from Denver to Porto

Get recent, data-driven insights about flights from Denver to Porto including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Denver to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Porto. Price data was last updated on January 10, 2025.

The best time to book flights from Denver to Porto is 29 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Denver to Porto (average of $523). Flying from Denver to Porto in June is currently the most expensive (average of $1,083). 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 OPO?

Find hourly flight availability from Denver to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 16, 2025.

It’s optimal to fly from Denver to Porto in the evening. By choosing this option you can save up to 33% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Denver to Porto?

Use this chart to determine the cheapest time to fly round-trip from Denver to Porto. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Denver to Porto flight should consider departing on Sunday evenings when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Porto by month

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

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

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

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated January 16, 2025.
Delta
8.0
Very good
8,511 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

Delta
8.0
Very good
8,511 reviews
Delta
8.0
Very good
8,511 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

KLM
7.8
Good
1,339 reviews
Delta
8.0
Very good
8,511 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

SWISS
7.5
Good
1,598 reviews
Delta
8.0
Very good
8,511 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

United Airlines
7.4
Good
8,965 reviews
Delta
8.0
Very good
8,511 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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

Turkish Airlines
7.3
Good
3,921 reviews
Delta
8.0
Very good
8,511 reviews

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

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 Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Denver to Porto round-trip?

    Currently priced at $578, Turkish Airlines will fly you from Denver to Porto and back. In addition to Turkish Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and American Airlines - these airlines can fly you to your destination from $700 and $702, respectively. Turkish Airlines is currently priced 45% below the average price you’ll pay for this route.

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

    The cheapest airlines for a one-way flight from Denver to Porto are British Airways ($510), Lufthansa ($588), and SWISS ($2,195).

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Denver to Porto (average of $523). Flying from Denver to Porto in June is currently the most expensive (average of $1,083). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
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Matosinhos
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Top 5 airlines flying from Denver to Porto

Discover the top 5 airlines that operate flights from Denver to Porto. 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 January 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$516Average$1,095FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$544Average$658FlexibilityNo cancel feeOn-time77%
DeltaCheapest$562Average$1,052FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$620Average$1,036FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$808Average$1,292FlexibilityNo cancel feeOn-time69%
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