What is the cheapest airline that flies from Porto to Philadelphia?

British Airways is the most popular carrier operating from Porto to Philadelphia

What airlines fly to Philadelphia?

TAP AIR PORTUGAL, United Airlines and Delta are the top three most popular airlines that fly to Philadelphia from Porto according to our data. TAP AIR PORTUGAL is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 3 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Porto Airport to Philadelphia Airport?

Prices for flights from Porto Airport to Philadelphia Airport are refreshed on a daily basis.

How old do you have to be to fly from Porto Airport to Philadelphia Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Porto Airport to Philadelphia Airport.

What documentation or ID do you need to fly to Philadelphia Airport?

The necessary travel and health documents for your Philadelphia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$431 Cheap Flights from Porto to Philadelphia in 2026

Find the cheapest flights from Porto to Philadelphia

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:05 am - 6:55 pmOPO Porto-PHL Philadelphia

18h 50m2 stops Lisbon Humberto Delgado Dublin

6:40 pm - 8:55 amPHL Philadelphia-OPO Porto

10h 15m1 stop Dublin

$779Multiple Airlines

Sat, Oct 24 - Sat, Oct 31

6:30 am - 7:08 pmOPO Porto-PHL Philadelphia

17h 38m2 stops Paris Charles de Gaulle Boston Logan Intl

2:48 pm - 10:35 amPHL Philadelphia-OPO Porto

15h 47m2 stops Boston Logan Intl Paris Charles de Gaulle

$780Delta

Mon, Oct 19 - Sun, Oct 25

5:00 am - 10:07 pmOPO Porto-PHL Philadelphia

22h 07m2 stops Amsterdam Schiphol Boston Logan Intl

6:00 am - 8:30 amPHL Philadelphia-OPO Porto

21h 30m2 stops Boston Logan Intl Paris Charles de Gaulle

$780Delta

Thu, Oct 8 - Thu, Oct 15

5:00 am - 10:07 pmOPO Porto-PHL Philadelphia

22h 07m2 stops Amsterdam Schiphol Boston Logan Intl

12:25 pm - 3:25 pmPHL Philadelphia-OPO Porto

22h 00m2 stops Boston Logan Intl Paris Charles de Gaulle

$783Delta

Tue, Oct 13 - Mon, Oct 19

5:55 am - 10:07 pmOPO Porto-PHL Philadelphia

21h 12m2 stops Paris Charles de Gaulle Boston Logan Intl

12:25 pm - 3:25 pmPHL Philadelphia-OPO Porto

22h 00m2 stops Boston Logan Intl Paris Charles de Gaulle

$783Delta

Thu, Oct 8 - Mon, Oct 12

8:40 pm - 5:25 pmOPO Porto-PHL Philadelphia

25h 45m1 stop Madrid Barajas

8:40 pm - 8:00 pmPHL Philadelphia-OPO Porto

19h 20m1 stop Madrid Barajas

$784Multiple Airlines

Mon, Oct 19 - Mon, Oct 26

12:25 pm - 11:21 amOPO Porto-PHL Philadelphia

27h 56m2 stops Madrid Barajas Boston Logan Intl

9:50 pm - 4:00 pmPHL Philadelphia-OPO Porto

37h 10m2 stops Boston Logan Intl Madrid Barajas

$785American Airlines

Thu, Nov 12 - Sun, Nov 15

12:25 pm - 4:45 pmOPO Porto-PHL Philadelphia

33h 20m2 stops Madrid Barajas Boston Logan Intl

7:45 pm - 4:00 pmPHL Philadelphia-OPO Porto

15h 15m1 stop Madrid Barajas

$785American Airlines

Thu, Nov 12 - Sun, Nov 15

5:00 am - 10:07 pmOPO Porto-PHL Philadelphia

22h 07m2 stops Amsterdam Schiphol Boston Logan Intl

9:20 am - 10:35 amPHL Philadelphia-OPO Porto

21h 15m2 stops Boston Logan Intl Paris Charles de Gaulle

$785Delta

Mon, Oct 19 - Mon, Oct 26

12:25 pm - 11:21 amOPO Porto-PHL Philadelphia

27h 56m2 stops Madrid Barajas Boston Logan Intl

9:50 pm - 4:00 pmPHL Philadelphia-OPO Porto

37h 10m2 stops Boston Logan Intl Madrid Barajas

$788American Airlines

Thu, Nov 12 - Sun, Nov 15

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

United Airlines flights from Porto to Philadelphia

Our best United Airlines deals on Porto to Philadelphia flight tickets

United Airlines

Oct 11

OPO6:00 amPorto

32h 43m

2 stops

PHL9:43 amPhiladelphia

Oct 18

PHL6:55 pmPhiladelphia

33h 50m

2 stops

OPO9:45 amPorto

$931

United Airlines

Oct 11

OPO6:00 amPorto

32h 43m

2 stops

PHL9:43 amPhiladelphia

Oct 18

PHL5:40 pmPhiladelphia

17h 00m

1 stop

OPO3:40 pmPorto

$936

United Airlines

Nov 18

OPO12:35 pmPorto

26h 14m

2 stops

PHL9:49 amPhiladelphia

Nov 19

PHL5:40 pmPhiladelphia

16h 40m

1 stop

OPO3:20 pmPorto

$993

Delta flights from Porto to Philadelphia

Our best Delta deals on Porto to Philadelphia flight tickets

Delta

Oct 8

OPO5:00 amPorto

22h 07m

2 stops

PHL10:07 pmPhiladelphia

Oct 15

PHL6:00 amPhiladelphia

21h 30m

2 stops

OPO8:30 amPorto

$780

Delta

Oct 8

OPO5:55 amPorto

21h 12m

2 stops

PHL10:07 pmPhiladelphia

Oct 12

PHL12:25 pmPhiladelphia

22h 00m

2 stops

OPO3:25 pmPorto

$783

Delta

Oct 9

OPO5:55 amPorto

22h 13m

2 stops

PHL11:08 pmPhiladelphia

Oct 16

PHL12:25 pmPhiladelphia

22h 00m

2 stops

OPO3:25 pmPorto

$881

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortoPhiladelphia

OPO Porto - PHL Philadelphia

OPOPHL

Porto

Sat 10/24

5:05 am-6:55 pm

2 stops18h 50m

Philadelphia

Sat 10/31

6:40 pm-8:55 am

1 stop10h 15m

$779

PortoPhiladelphia

OPO Porto - PHL Philadelphia

OPOPHL

Porto

Mon 10/19

6:30 am-7:08 pm

2 stops17h 38m

Philadelphia

Sun 10/25

2:48 pm-10:35 am

2 stops15h 47m

$780

PortoPhiladelphia

OPO Porto - PHL Philadelphia

OPOPHL

Porto

Thu 10/8

5:00 am-10:07 pm

2 stops22h 07m

Philadelphia

Thu 10/15

6:00 am-8:30 am

2 stops21h 30m

$780

PortoPhiladelphia

OPO Porto - PHL Philadelphia

OPOPHL

Porto

Tue 10/13

5:00 am-10:07 pm

2 stops22h 07m

Philadelphia

Mon 10/19

12:25 pm-3:25 pm

2 stops22h 00m

$783

PortoPhiladelphia

OPO Porto - PHL Philadelphia

OPOPHL

Porto

Thu 10/8

5:55 am-10:07 pm

2 stops21h 12m

Philadelphia

Mon 10/12

12:25 pm-3:25 pm

2 stops22h 00m

$783

PortoPhiladelphia

OPO Porto - PHL Philadelphia

OPOPHL

Porto

Mon 10/19

8:40 pm-5:25 pm

1 stop25h 45m

Philadelphia

Mon 10/26

8:40 pm-8:00 pm

1 stop19h 20m

$784

PortoPhiladelphia

OPO Porto - PHL Philadelphia

OPOPHL

Porto

Thu 11/12

12:25 pm-11:21 am

2 stops27h 56m

Philadelphia

Sun 11/15

9:50 pm-4:00 pm

2 stops37h 10m

$785

PortoPhiladelphia

OPO Porto - PHL Philadelphia

OPOPHL

Porto

Thu 11/12

12:25 pm-4:45 pm

2 stops33h 20m

Philadelphia

Sun 11/15

7:45 pm-4:00 pm

1 stop15h 15m

$785

PortoPhiladelphia

OPO Porto - PHL Philadelphia

OPOPHL

Porto

Mon 10/19

5:00 am-10:07 pm

2 stops22h 07m

Philadelphia

Mon 10/26

9:20 am-10:35 am

2 stops21h 15m

$785

PortoPhiladelphia

OPO Porto - PHL Philadelphia

OPOPHL

Porto

Thu 11/12

12:25 pm-11:21 am

2 stops27h 56m

Philadelphia

Sun 11/15

9:50 pm-4:00 pm

2 stops37h 10m

$788

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Porto to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on Porto to Philadelphia flights?

You could potentially save up to 7% on your flight if you consider stops on a Porto to Philadelphia flight.

When to book flights from Porto to Philadelphia

Are you open to changing your travel dates? Check out the ideal times to fly from Porto to Philadelphia according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Porto to Philadelphia (OPO to PHL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to Philadelphia

Best Price Found	$431
Fastest flight time	40h 35m
Direct flights	None

The best one-way flight to Philadelphia from Porto in the past 72 hours is $431. The best round-trip flight deal from Porto to Philadelphia found on momondo in the last 72 hours is $779.

The fastest flight from Porto to Philadelphia takes 40h 35m

There are no direct flights from Porto to Philadelphia. There are no popular flight routes from Porto to Philadelphia.

Search flight deals

Frequently asked questions about flying from Porto to Philadelphia

How far is Porto to Philadelphia by plane?
Porto and Philadelphia are 3401.6 mi apart from one another. Typically, this will take 40h 35m by plane in normal conditions.
When did momondo last update prices for flights from Porto Airport to Philadelphia Airport?
Prices for flights from Porto Airport to Philadelphia Airport are refreshed on a daily basis.
How old do you have to be to fly from Porto Airport to Philadelphia Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Porto Airport to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The necessary travel and health documents for your Philadelphia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Wildwood

Rehoboth Beach

Cape May

Wildwood Crest

Ocean City

Cherry Hill

King of Prussia

Newark

Reading

Essington

Dover

Dewey Beach

New Castle

North Wildwood

Chester

Vineland

Avalon

Stone Harbor

Pottstown

Lewes

Why use momondo?

Why should I use momondo to find a flight deal from Porto to Philadelphia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Philadelphia from Porto.

Can I find flights from Porto to Philadelphia with flexible booking policies on momondo?

Flights from Porto to Philadelphia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Porto to Philadelphia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Philadelphia from Porto.

I’m not ready to book a flight from Porto to Philadelphia right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Porto to Philadelphia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Philadelphia and let you know when they change.