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

United Airlines and Lufthansa are the most popular carriers operating from Philadelphia to Porto

Which airport is the most popular layover for flights between Philadelphia and Porto?

Madrid (MAD) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Philadelphia to Porto?

Flights via Frankfurt am Main (FRA) offer the lowest average round-trip price of $862.

What airlines fly to Porto?

TAP AIR PORTUGAL, United Airlines and Air Europa are the top three most popular airlines that fly to Porto from Philadelphia according to our data. TAP AIR PORTUGAL is the first choice among our users, with 71% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 15 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Philadelphia to Porto?

Frankfurt am Main (FRA) has the shortest average layover time for this route: 2h 41m.

Which layover airport has the shortest travel time from Philadelphia to Porto?

Flights connecting via Madrid (MAD) have the shortest average one-way travel time: 10h 13m.

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

Prices for flights from Philadelphia Airport to Porto Airport refresh daily.

How many operators does momondo search for flights from Philadelphia Airport to Porto Airport?

As of December 2025, there are 4 operators available to choose from for flights from Philadelphia Airport to Porto Airport.

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

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

The required travel and health documents for your Porto Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$267 Cheap Flights from Philadelphia to Porto in 2025/26

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3:30 pm - 1:15 pm

PHL

OPO

16h 45m2 stops

12:30 pm - 5:05 pm

OPO

PHL

32h 35m1 stop

$485Multiple Airlines

Wed, Mar 4 - Mon, Mar 16

10:33 am - 9:45 am

PHL

OPO

18h 12m2 stops

6:00 am - 4:00 pm

OPO

PHL

15h 00m1 stop

$486United Airlines

Wed, Apr 22 - Fri, May 8

3:30 pm - 12:05 pm

PHL

OPO

15h 35m2 stops

12:30 pm - 2:47 pm

OPO

PHL

31h 17m2 stops

$487Multiple Airlines

Mon, Jan 26 - Mon, Feb 2

3:30 pm - 1:15 pm

PHL

OPO

16h 45m2 stops

6:00 am - 3:24 pm

OPO

PHL

38h 24m2 stops

$490Air Canada

Wed, Feb 18 - Wed, Feb 25

10:33 am - 9:45 am

PHL

OPO

18h 12m2 stops

6:00 am - 5:32 pm

OPO

PHL

16h 32m2 stops

$491United Airlines

Wed, Apr 22 - Fri, May 8

5:40 pm - 11:40 am

PHL

OPO

13h 00m1 stop

6:00 am - 4:05 pm

OPO

PHL

15h 05m1 stop

$500Lufthansa

Thu, Jan 8 - Thu, Jan 22

3:30 pm - 1:15 pm

PHL

OPO

16h 45m2 stops

7:20 pm - 5:05 pm

OPO

PHL

25h 45m2 stops

$503Multiple Airlines

Wed, Mar 4 - Mon, Mar 16

1:10 pm - 11:15 am

PHL

OPO

41h 05m3 stops

12:05 pm - 9:36 pm

OPO

PHL

38h 31m2 stops

$505SWISS

Mon, Jan 26 - Mon, Feb 2

5:40 pm - 11:40 am

PHL

OPO

13h 00m1 stop

12:55 pm - 6:55 pm

OPO

PHL

35h 00m2 stops

$514Multiple Airlines

Sun, Jan 25 - Sun, Feb 1

4:35 pm - 12:50 pm

PHL

OPO

15h 15m2 stops

6:00 am - 10:46 pm

OPO

PHL

21h 46m2 stops

$518Multiple Airlines

Fri, Jan 23 - Tue, Jan 27

United Airlines flights from Philadelphia to Porto

Our best United Airlines deals on Philadelphia to Porto flight tickets

United Airlines

Apr 22

PHL10:33 amPhiladelphia

18h 12m

2 stops

OPO9:45 amPorto

May 8

OPO6:00 amPorto

15h 00m

1 stop

PHL4:00 pmPhiladelphia

$486

Find similar

United Airlines

Apr 22

PHL10:33 amPhiladelphia

18h 12m

2 stops

OPO9:45 amPorto

May 8

OPO6:00 amPorto

16h 32m

2 stops

PHL5:32 pmPhiladelphia

$491

Find similar

United Airlines

Feb 9

PHL5:00 pmPhiladelphia

40h 45m

2 stops

OPO2:45 pmPorto

Feb 16

OPO12:30 pmPorto

50h 54m

2 stops

PHL10:24 amPhiladelphia

$527

Find similar

SWISS flights from Philadelphia to Porto

Our best SWISS deals on Philadelphia to Porto flight tickets

SWISS

Jan 26

PHL1:10 pmPhiladelphia

41h 05m

3 stops

OPO11:15 amPorto

Feb 2

OPO12:05 pmPorto

38h 31m

2 stops

PHL9:36 pmPhiladelphia

$505

Find similar

SWISS

Apr 19

PHL5:35 pmPhiladelphia

19h 55m

2 stops

OPO6:30 pmPorto

Apr 30

OPO7:20 pmPorto

51h 12m

2 stops

PHL5:32 pmPhiladelphia

$524

Find similar

SWISS

Mar 4

PHL12:55 pmPhiladelphia

23h 35m

2 stops

OPO5:30 pmPorto

Mar 16

OPO7:20 pmPorto

56h 56m

3 stops

PHL12:16 amPhiladelphia

$528

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 3/4

3:30 pm-1:15 pm

2 stops16h 45m

Porto

Mon 3/16

12:30 pm-5:05 pm

1 stop32h 35m

$485

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 4/22

10:33 am-9:45 am

2 stops18h 12m

Porto

Fri 5/8

6:00 am-4:00 pm

1 stop15h 00m

$486

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 1/26

3:30 pm-12:05 pm

2 stops15h 35m

Porto

Mon 2/2

12:30 pm-2:47 pm

2 stops31h 17m

$487

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 2/18

3:30 pm-1:15 pm

2 stops16h 45m

Porto

Wed 2/25

6:00 am-3:24 pm

2 stops38h 24m

$490

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 4/22

10:33 am-9:45 am

2 stops18h 12m

Porto

Fri 5/8

6:00 am-5:32 pm

2 stops16h 32m

$491

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Thu 1/8

5:40 pm-11:40 am

1 stop13h 00m

Porto

Thu 1/22

6:00 am-4:05 pm

1 stop15h 05m

$500

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 3/4

3:30 pm-1:15 pm

2 stops16h 45m

Porto

Mon 3/16

7:20 pm-5:05 pm

2 stops25h 45m

$503

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 1/26

1:10 pm-11:15 am

3 stops41h 05m

Porto

Mon 2/2

12:05 pm-9:36 pm

2 stops38h 31m

$505

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 1/25

5:40 pm-11:40 am

1 stop13h 00m

Porto

Sun 2/1

12:55 pm-6:55 pm

2 stops35h 00m

$514

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Fri 1/23

4:35 pm-12:50 pm

2 stops15h 15m

Porto

Tue 1/27

6:00 am-10:46 pm

2 stops21h 46m

$518

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Philadelphia to Porto

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

Layovers

What is the cheapest month to fly to Porto?

The month of November is, on average, the cheapest month to fly to Porto from Philadelphia, with most prices found around $616. If you aren’t able to travel during the month of November, then book flights to Porto from Philadelphia during March instead. Flights to Porto in March, while not as cheap as those in November, still average around $657.

What is the cheapest time of day to depart on your flight to Porto?

In the evening is the cheapest time of day to fly from Philadelphia to Porto when you can find flight prices for as low as $829. Flying to Porto in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $951 on average. Flights to Porto from Philadelphia in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Porto?

You are more likely to see cheaper flights to Porto from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $815 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Philadelphia for as low as $640 on momondo.

Can stopping save me money on Philadelphia to Porto flights?

You could potentially save up to 60% on your flight if you consider stops on a Philadelphia to Porto flight.

When to book flights from Philadelphia to Porto

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

Estimated round-trip price

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

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

Fastest flight time	13h 00m
Direct flights	None

The fastest flight from Philadelphia to Porto takes 13h 00m

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

Search flight deals

How far is Philadelphia to Porto by plane?
A flight from Philadelphia to Porto will travel around 3401.6 mi. 13h 00m is a normal flight duration for this route.
When did momondo last update prices for flights from Philadelphia Airport to Porto Airport?
Prices for flights from Philadelphia Airport to Porto Airport refresh daily.
How many operators does momondo search for flights from Philadelphia Airport to Porto Airport?
As of December 2025, there are 4 operators available to choose from for flights from Philadelphia Airport to Porto Airport.
How old do you have to be to fly from Philadelphia Airport to Porto 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 Philadelphia Airport to Porto Airport.
What documentation or ID do you need to fly to Porto Airport?
The required travel and health documents for your Porto Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Philadelphia to Porto?
Based on momondo bookings for flights between Philadelphia and Porto, the leading airline is Lufthansa, making up 35% of the total bookings. Other popular airlines include United Airlines with 24%, Iberia with 23%, and American Airlines with 18%.

Best airlines flying from Philadelphia to Porto

Compare and see reviews for airlines that fly from Philadelphia to Porto with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $489	Free Cancellation	Rating 7.4 9,114 reviews	Search United Airlines flights
American Airlines	PriceFrom $567	Free Cancellation	Rating 7.2 11,071 reviews	Search American Airlines flights
Lufthansa	PriceFrom $576	Free Cancellation	Rating 6.8 7,659 reviews	Search Lufthansa flights
Iberia	PriceFrom $593	Free Cancellation	Rating 7.0 3,059 reviews	Search Iberia flights

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Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to Porto. momondo saves you time and could save you money on your trip.

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

All flight searches from Philadelphia to Porto on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Philadelphia to Porto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Philadelphia to Porto flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Porto trip

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Cheap flights from Philadelphia to Porto from $267

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Porto departing on 4/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Philadelphia to Porto

Our best United Airlines deals on Philadelphia to Porto flight tickets

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

See travel insights to Porto from

How to get the cheapest flight ticket from Philadelphia to Porto

What is the cheapest month to fly to Porto?

What is the cheapest time of day to depart on your flight to Porto?

How far in advance should I book a flight to Porto?

Can stopping save me money on Philadelphia to Porto flights?

You could potentially save up to 60% on your flight if you consider stops on a Philadelphia to Porto flight.

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

United Airlines and Lufthansa are the most popular carriers operating from Philadelphia to Porto

What airlines fly to Porto?

Which airport is the most popular layover for flights between Philadelphia and Porto?

Madrid (MAD) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Philadelphia to Porto?

Flights via Frankfurt am Main (FRA) offer the lowest average round-trip price of $862.

Which layover airport has the shortest travel time from Philadelphia to Porto?

Flights connecting via Madrid (MAD) have the shortest average one-way travel time: 10h 13m.

Which layover airport has the shortest connection time from Philadelphia to Porto?

Frankfurt am Main (FRA) has the shortest average layover time for this route: 2h 41m.

When to book flights from Philadelphia to Porto

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

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

Fastest flight time

Direct flights

How far is Philadelphia to Porto by plane?

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

How many operators does momondo search for flights from Philadelphia Airport to Porto Airport?

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

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

What is the most popular airline from Philadelphia to Porto?

Best airlines flying from Philadelphia to Porto

Compare and see reviews for airlines that fly from Philadelphia to Porto with momondo

Traveling to a place near Porto?

Why use momondo?

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

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

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

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

An easier way to manage your Porto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Airports servicing Portugal