How do I get Price Alerts for flights from Porto to Philadelphia?

Confirm your travel details to search for the latest offers for flights from Porto to Philadelphia . While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

How can I save money on flights from Porto to Philadelphia with momondo?

Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore” . Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

How does momondo find its flight prices?

We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

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.

$461 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.

10:30 pm - 6:55 pm

OPO

PHL

25h 25m

2 stops

8:25 pm - 9:45 pm

PHL

OPO

20h 20m

1 stop

$793Multiple Airlines

Thu, Aug 27 - Mon, Aug 31

4:00 pm - 6:55 pm

OPO

PHL

31h 55m

2 stops

8:25 pm - 9:45 pm

PHL

OPO

20h 20m

1 stop

$804Multiple Airlines

Thu, Aug 27 - Mon, Aug 31

8:40 pm - 5:50 pm

OPO

PHL

26h 10m

1 stop

8:50 pm - 9:00 pm

PHL

OPO

19h 10m

1 stop

$822Iberia

Sat, Oct 17 - Sat, Oct 24

4:40 pm - 5:40 pm

OPO

PHL

30h 00m

1 stop

8:20 pm - 8:00 pm

PHL

OPO

18h 40m

1 stop

$824Iberia

Thu, Aug 27 - Mon, Aug 31

4:00 pm - 6:55 pm

OPO

PHL

31h 55m

2 stops

8:25 pm - 4:10 pm

PHL

OPO

14h 45m

2 stops

$825Multiple Airlines

Thu, Aug 27 - Mon, Aug 31

4:00 pm - 6:55 pm

OPO

PHL

31h 55m

2 stops

8:25 pm - 4:10 pm

PHL

OPO

14h 45m

2 stops

$830Multiple Airlines

Thu, Aug 27 - Mon, Aug 31

8:40 pm - 3:40 pm

OPO

PHL

24h 00m

2 stops

8:20 pm - 8:00 pm

PHL

OPO

18h 40m

1 stop

$837Iberia

Thu, Aug 27 - Mon, Aug 31

10:30 pm - 9:34 pm

OPO

PHL

28h 04m

3 stops

3:25 pm - 11:55 pm

PHL

OPO

27h 30m

3 stops

$844Multiple Airlines

Mon, Aug 24 - Mon, Aug 31

4:00 pm - 6:55 pm

OPO

PHL

31h 55m

2 stops

8:25 pm - 10:50 am

PHL

OPO

33h 25m

3 stops

$856Multiple Airlines

Thu, Aug 27 - Mon, Aug 31

8:40 pm - 3:40 pm

OPO

PHL

24h 00m

2 stops

5:05 pm - 8:00 pm

PHL

OPO

21h 55m

2 stops

$864Iberia

Thu, Aug 27 - Mon, Aug 31

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American Airlines flights from Porto to Philadelphia

Our best American Airlines deals on Porto to Philadelphia flight tickets

American Airlines

Dec 3

OPO12:25 pmPorto

32h 25m

1 stop

PHL3:50 pmPhiladelphia

Dec 6

PHL7:50 pmPhiladelphia

15h 10m

1 stop

OPO4:00 pmPorto

$924

American Airlines

Dec 3

OPO12:25 pmPorto

32h 25m

1 stop

PHL3:50 pmPhiladelphia

Dec 6

PHL7:50 pmPhiladelphia

15h 10m

1 stop

OPO4:00 pmPorto

$925

American Airlines

Dec 3

OPO12:25 pmPorto

32h 25m

1 stop

PHL3:50 pmPhiladelphia

Dec 6

PHL7:50 pmPhiladelphia

15h 10m

1 stop

OPO4:00 pmPorto

$927

United Airlines flights from Porto to Philadelphia

Our best United Airlines deals on Porto to Philadelphia flight tickets

United Airlines

Dec 3

OPO6:00 amPorto

15h 05m

1 stop

PHL4:05 pmPhiladelphia

Dec 6

PHL2:37 pmPhiladelphia

13h 53m

2 stops

OPO9:30 amPorto

$872

United Airlines

Dec 3

OPO6:00 amPorto

15h 05m

1 stop

PHL4:05 pmPhiladelphia

Dec 6

PHL2:37 pmPhiladelphia

13h 53m

2 stops

OPO9:30 amPorto

$873

United Airlines

Dec 3

OPO6:00 amPorto

15h 05m

1 stop

PHL4:05 pmPhiladelphia

Dec 6

PHL2:37 pmPhiladelphia

13h 53m

2 stops

OPO9:30 amPorto

$874

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Thu 8/27

10:30 pm-6:55 pm

2 stops25h 25m

Philadelphia

Mon 8/31

8:25 pm-9:45 pm

1 stop20h 20m

$793

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Thu 8/27

4:00 pm-6:55 pm

2 stops31h 55m

Philadelphia

Mon 8/31

8:25 pm-9:45 pm

1 stop20h 20m

$804

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Sat 10/17

8:40 pm-5:50 pm

1 stop26h 10m

Philadelphia

Sat 10/24

8:50 pm-9:00 pm

1 stop19h 10m

$822

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Thu 8/27

4:40 pm-5:40 pm

1 stop30h 00m

Philadelphia

Mon 8/31

8:20 pm-8:00 pm

1 stop18h 40m

$824

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Thu 8/27

4:00 pm-6:55 pm

2 stops31h 55m

Philadelphia

Mon 8/31

8:25 pm-4:10 pm

2 stops14h 45m

$825

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Thu 8/27

4:00 pm-6:55 pm

2 stops31h 55m

Philadelphia

Mon 8/31

8:25 pm-4:10 pm

2 stops14h 45m

$830

Quickest round-trip

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Thu 8/27

8:40 pm-3:40 pm

2 stops24h 00m

Philadelphia

Mon 8/31

8:20 pm-8:00 pm

1 stop18h 40m

$837

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Mon 8/24

10:30 pm-9:34 pm

3 stops28h 04m

Philadelphia

Mon 8/31

3:25 pm-11:55 pm

3 stops27h 30m

$844

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Thu 8/27

4:00 pm-6:55 pm

2 stops31h 55m

Philadelphia

Mon 8/31

8:25 pm-10:50 am

3 stops33h 25m

$856

PortoPhiladelphia

OPO - PHL

OPOPHL

Porto

Thu 8/27

8:40 pm-3:40 pm

2 stops24h 00m

Philadelphia

Mon 8/31

5:05 pm-8:00 pm

2 stops21h 55m

$864

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Fastest flight time	15h 05m
Direct flights	None

The fastest flight from Porto to Philadelphia takes 15h 05m

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 15h 05m 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.

Frequently asked questions about flying from Porto to Philadelphia

How do I get Price Alerts for flights from Porto to Philadelphia?
Confirm your travel details to search for the latest offers for flights from Porto to Philadelphia. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.
How can I save money on flights from Porto to Philadelphia with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Wildwood

Rehoboth Beach

Cape May

Wildwood Crest

Ocean City

Cherry Hill

King of Prussia

Newark

Reading

Dewey Beach

Dover

Essington

North Wildwood

Avalon

New Castle

Lewes

Chester

Stone Harbor

Vineland

Pottstown

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.