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$404+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — PHL
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
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 July 1, 2025.

Round-trip from

$800
(Mytrip)

One-way from

$404
(Kiwi.com)
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 July 1, 2025.

This Mytrip deal was found by Cheapflights users on 6/30. 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.
Mon 8/257:25 pmOPO - PHL
3 stops31h 42mMultiple Airlines
Sun 8/315:35 pmPHL - OPO
3 stops24h 00mMultiple Airlines
Deal found 6/30$800
This Delta deal was found by Cheapflights users on 6/30. 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 8/256:30 amOPO - PHL
2 stops19h 54mDelta
Sun 8/312:30 pmPHL - OPO
2 stops20h 05mDelta
Deal found 6/30$836
This oojo deal was found by Cheapflights users on 7/1. 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.
Tue 8/129:00 amOPO - PHL
2 stops29h 40mTAP AIR PORTUGAL
Tue 8/265:40 pmPHL - OPO
2 stops18h 20mTAP AIR PORTUGAL
Deal found 7/1$875
This Air Canada deal was found by Cheapflights users on 6/30. 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.
Tue 8/1212:50 pmOPO - PHL
1 stop14h 17mAir Canada
Tue 8/2610:40 amPHL - OPO
2 stops41h 40mAir Canada
Deal found 6/30$1,063
This United Airlines deal was found by Cheapflights users on 6/30. 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 8/1212:50 pmOPO - PHL
1 stop14h 17mUnited Airlines
Tue 8/265:35 pmPHL - OPO
1 stop12h 40mUnited Airlines
Deal found 6/30$1,139
This Iberia deal was found by Cheapflights users on 6/30. 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.
Thu 8/148:40 amOPO - PHL
1 stop13h 05mIberia
Thu 8/218:25 pmPHL - OPO
1 stop10h 15mIberia
Deal found 6/30$1,214
This SWISS deal was found by Cheapflights users on 7/1. 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.
Tue 7/18:00 pmOPO - PHL
2 stops25h 00mSWISS
Sat 7/58:15 amPHL - OPO
2 stops29h 15mSWISS
Deal found 7/1$1,882

Cheapflights Fare Finder

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 July 1, 2025.
Use the filters below to find and compare flights from Porto to Philadelphia that are best for you.

Fly from

Porto

Fly to

Philadelphia

Route

Depart

Return

Price

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Mon 8/25

7:25 pm-10:07 pm

3 stops31h 42m

Philadelphia

Sun 8/31

5:35 pm-10:35 pm

3 stops24h 00m

$800

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Mon 8/25

6:30 am-9:24 pm

2 stops19h 54m

Philadelphia

Sun 8/31

2:30 pm-3:35 pm

2 stops20h 05m

$836

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Tue 8/12

9:00 am-9:40 am

2 stops29h 40m

Philadelphia

Tue 8/26

5:40 pm-5:00 pm

2 stops18h 20m

$875

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Tue 8/12

12:50 pm-10:07 pm

1 stop14h 17m

Philadelphia

Tue 8/26

10:40 am-9:20 am

2 stops41h 40m

$1,063

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Tue 8/12

12:50 pm-10:07 pm

1 stop14h 17m

Philadelphia

Tue 8/26

5:35 pm-11:15 am

1 stop12h 40m

$1,139

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Thu 8/14

8:40 am-4:45 pm

1 stop13h 05m

Philadelphia

Thu 8/21

8:25 pm-11:40 am

1 stop10h 15m

$1,214

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Tue 10/21

10:00 pm-11:33 am

2 stops42h 33m

$404

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Tue 10/21

6:00 am-4:00 pm

1 stop15h 00m

$671

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Fri 9/26

8:15 am-3:55 pm

1 stop12h 40m

$679

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Mon 10/27

4:40 pm-4:35 pm

1 stop27h 55m

$691

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 12 results
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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.

Cheapflights Insights

Everything you need to know about your flight from Porto to Philadelphia

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.

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 July 1, 2025.
Read through reviews of airlines operating flights from Porto to Philadelphia, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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
8,858 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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!
Air Canada
7.1
Good
9,665 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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!
TAP AIR PORTUGAL
7.1
Good
1,912 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

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 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?

    Delta, at $836, was found to be the cheapest airline from Porto to Philadelphia.Alternate airlines to your destination round-trip include TAP AIR PORTUGAL and Air Canada.

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

    The cheapest airlines for a one-way flight from Porto to Philadelphia are Lufthansa ($671), Iberia ($679), and American Airlines ($691).

  • 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
Vineland
Wildwood
King of Prussia
Cherry Hill
Pottstown
Ocean City
Chester
Essington
Exton
Reading
Newark
Millville
Ephrata
Camden
Dover
Elkton
Willow Grove
Glen Mills
Springfield
Phoenixville

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