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$402+ Cheap flights from Porto (OPO) to Philadelphia (PHL)

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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — PHL
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Porto to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Philadelphia (PHL). 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$638
(American Airlines)

One-way from

$402
(Kiwi.com)
Provider with most accurate pricing for Porto-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Porto-Philadelphia flights.
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From Porto to Philadelphia
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One-way flight from Porto to Philadelphia
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Find flight deals from Porto to Philadelphia

Cheapest flights from Porto to Philadelphia
Explore the most affordable flight options available from Porto to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This American Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 3/68:20 amOPO - PHL
2 stops16h 42mMultiple Airlines
Tue 3/117:40 pmPHL - OPO
1 stop18h 00mMultiple Airlines
Deal found 2/19$638
This American Airlines deal was found by Cheapflights users on 2/20. 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 3/108:20 amOPO - PHL
2 stops36h 59mAmerican Airlines
Sun 3/1610:05 pmPHL - OPO
1 stop17h 55mAmerican Airlines
Deal found 2/20$646
This British Airways deal was found by Cheapflights users on 2/20. 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.
Mon 3/105:30 pmOPO - PHL
1 stop27h 50mBritish Airways
Sun 3/1610:15 pmPHL - OPO
1 stop14h 25mBritish Airways
Deal found 2/20$660
This Air Canada deal was found by Cheapflights users on 2/20. 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.
Fri 5/236:00 amOPO - PHL
2 stops21h 21mAir Canada
Fri 6/134:50 pmPHL - OPO
2 stops35h 40mAir Canada
Deal found 2/20$715
This TAP AIR PORTUGAL deal was found by Cheapflights users on 2/20. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/216:10 pmOPO - PHL
1 stop20h 29mTAP AIR PORTUGAL
Mon 7/216:35 pmPHL - OPO
1 stop11h 20mTAP AIR PORTUGAL
Deal found 2/20$3,347
This Iberia deal was found by Cheapflights users on 2/20. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/258:35 pmOPO - PHL
1 stop24h 10mIberia
Sun 7/208:30 pmPHL - OPO
1 stop18h 25mIberia
Deal found 2/20$3,469
This United Airlines deal was found by Cheapflights users on 2/20. 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 5/266:00 amOPO - PHL
1 stop15h 00mUnited Airlines
Sun 7/205:35 pmPHL - OPO
1 stop12h 40mUnited Airlines
Deal found 2/20$3,491
This KLM deal was found by Cheapflights users on 2/20. 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.
Wed 5/216:25 amOPO - PHL
2 stops19h 48mKLM
Sat 7/191:15 pmPHL - OPO
2 stops16h 25mKLM
Deal found 2/20$4,049
This Air France deal was found by Cheapflights users on 2/20. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/256:35 amOPO - PHL
2 stops15h 33mAir France
Mon 7/215:59 pmPHL - OPO
2 stops16h 31mAir France
Deal found 2/20$4,158

Find flights from Porto to Philadelphia within your budget

Customize your flight search to find flights from Porto to Philadelphia 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 February 20, 2025.

Fly from

Porto

Fly to

Philadelphia

Route

Depart

Return

Price

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Thu 3/6

8:20 am-8:02 pm

2 stops16h 42m

Philadelphia

Tue 3/11

7:40 pm-5:40 pm

1 stop18h 00m

$638

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Mon 3/10

8:20 am-5:19 pm

2 stops36h 59m

Philadelphia

Sun 3/16

10:05 pm-8:00 pm

1 stop17h 55m

$646

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Mon 3/10

5:30 pm-5:20 pm

1 stop27h 50m

Philadelphia

Sun 3/16

10:15 pm-4:40 pm

1 stop14h 25m

$660

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Fri 5/23

6:00 am-10:21 pm

2 stops21h 21m

Philadelphia

Fri 6/13

4:50 pm-9:30 am

2 stops35h 40m

$715

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Wed 5/21

6:10 pm-9:39 am

1 stop20h 29m

Philadelphia

Mon 7/21

6:35 pm-10:55 am

1 stop11h 20m

$3,347

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Sun 5/25

8:35 pm-3:45 pm

1 stop24h 10m

Philadelphia

Sun 7/20

8:30 pm-7:55 pm

1 stop18h 25m

$3,469

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Mon 5/26

6:00 am-4:00 pm

1 stop15h 00m

Philadelphia

Sun 7/20

5:35 pm-11:15 am

1 stop12h 40m

$3,491

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Wed 5/21

6:25 am-9:13 pm

2 stops19h 48m

Philadelphia

Sat 7/19

1:15 pm-10:40 am

2 stops16h 25m

$4,049

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Sun 5/25

6:35 am-5:08 pm

2 stops15h 33m

Philadelphia

Mon 7/21

5:59 pm-3:30 pm

2 stops16h 31m

$4,158

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Sun 3/30

3:40 pm-5:29 pm

3 stops54h 49m

$402

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 11 results
1
2
  • Most accurate provider: When it comes to deals on Porto-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto-Philadelphia 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 Porto-Philadelphia 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 Porto to Philadelphia

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

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

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

Currently, August is the cheapest month in which you can book a flight from Porto to Philadelphia (average of $236). Flying from Porto to Philadelphia in March is currently the most expensive (average of $295). 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.

Rainfall in Philadelphia by month

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

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

Temperature in Philadelphia by month

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

If weather is an important factor for your trip to Philadelphia, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated February 20, 2025.
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

SWISS
7.5
Good
1,568 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Air France
7.4
Good
1,449 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

United Airlines
7.4
Good
8,766 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Related info for your journey

Find useful and relevant information for your journey from Porto to Philadelphia. 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 Porto to Philadelphia round-trip?

    American Airlines, at $646, was found to be the cheapest airline from Porto to Philadelphia.Alternate airlines to your destination round-trip include British Airways and Air Canada.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Porto to Philadelphia (average of $236). Flying from Porto to Philadelphia in March is currently the most expensive (average of $295). 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 Porto?

Book flights to Porto if you plan to visit one of these locations
King of Prussia
Vineland
Pottstown
Reading
Wildwood
Exton
Ocean City
Cherry Hill
Essington
Chester
Willow Grove
Newark
Middletown
Millville
Wyomissing
Ephrata
Dewey Beach
West Chester
Malvern
Dover

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