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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 11/6. 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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Find the cheapest flights from Philadelphia to Porto

Cheap round-trip flights

United Airlines Logo
12:40 pm - 9:30 amPHL-OPO
15h 50m2 stops
United Airlines Logo
6:00 am - 4:00 pmOPO-PHL
15h 00m1 stop
$584United Airlines
Find Deal
Mon, Nov 17 - Tue, Nov 25
United Airlines Logo
10:34 am - 9:30 amPHL-OPO
17h 56m2 stops
United Airlines Logo
6:00 am - 4:00 pmOPO-PHL
15h 00m1 stop
$590United Airlines
Find Deal
Sun, Nov 16 - Tue, Nov 25
Iberia Logo
8:00 pm - 11:45 amPHL-OPO
10h 45m1 stop
Iberia Logo
8:20 am - 3:35 pmOPO-PHL
12h 15m1 stop
$594Iberia
Find Deal
Sun, Nov 16 - Tue, Nov 25
Iberia Logo
1:35 pm - 8:00 pmPHL-OPO
25h 25m2 stops
Iberia Logo
8:20 am - 3:35 pmOPO-PHL
12h 15m1 stop
$598Iberia
Find Deal
Wed, Dec 3 - Tue, Dec 9
Logo
7:45 pm - 4:40 pmPHL-OPO
15h 55m1 stop
Logo
8:40 pm - 3:35 pmOPO-PHL
23h 55m1 stop
$599
Find Deal
Sun, Nov 16 - Mon, Nov 24
Air Canada Logo
3:30 pm - 11:10 amPHL-OPO
38h 40m2 stops
Air Canada Logo
6:00 am - 3:49 pmOPO-PHL
38h 49m2 stops
$601Air Canada
Find Deal
Sat, Nov 29 - Tue, Dec 9
Air Canada Logo
3:30 pm - 11:10 amPHL-OPO
38h 40m2 stops
Air Canada Logo
6:00 am - 10:56 pmOPO-PHL
21h 56m2 stops
$602Air Canada
Find Deal
Sat, Nov 15 - Tue, Nov 25
Logo
3:30 pm - 11:40 amPHL-OPO
15h 10m2 stops
Logo
7:20 pm - 9:36 pmOPO-PHL
31h 16m2 stops
$619
Find Deal
Mon, Dec 1 - Mon, Dec 8
Lufthansa Logo
5:40 pm - 11:40 amPHL-OPO
13h 00m1 stop
Lufthansa Logo
4:15 pm - 4:05 pmOPO-PHL
28h 50m1 stop
$631Lufthansa
Find Deal
Tue, Nov 18 - Wed, Nov 26
Lufthansa Logo
5:35 pm - 11:20 amPHL-OPO
12h 45m1 stop
Lufthansa Logo
6:00 am - 4:00 pmOPO-PHL
15h 00m1 stop
$648Lufthansa
Find Deal
Wed, Oct 15 - Wed, Oct 22

United Airlines flights from Philadelphia to Porto

Our best United Airlines deals on Philadelphia to Porto flight tickets
United Airlines
Nov 17
PHL12:40 pmPhiladelphia
15h 50m
2 stops
OPO9:30 amPorto
Nov 25
OPO6:00 amPorto
15h 00m
1 stop
PHL4:00 pmPhiladelphia
$584
Find similar
United Airlines
Nov 16
PHL10:34 amPhiladelphia
17h 56m
2 stops
OPO9:30 amPorto
Nov 25
OPO6:00 amPorto
15h 00m
1 stop
PHL4:00 pmPhiladelphia
$590
Find similar
United Airlines
Nov 16
PHL10:34 amPhiladelphia
17h 56m
2 stops
OPO9:30 amPorto
Nov 26
OPO12:35 pmPorto
26h 11m
2 stops
PHL9:46 amPhiladelphia
$597
Find similar

Iberia flights from Philadelphia to Porto

Our best Iberia deals on Philadelphia to Porto flight tickets
Iberia
Nov 16
PHL8:00 pmPhiladelphia
10h 45m
1 stop
OPO11:45 amPorto
Nov 25
OPO8:20 amPorto
12h 15m
1 stop
PHL3:35 pmPhiladelphia
$594
Find similar
Iberia
Dec 3
PHL1:35 pmPhiladelphia
25h 25m
2 stops
OPO8:00 pmPorto
Dec 9
OPO8:20 amPorto
12h 15m
1 stop
PHL3:35 pmPhiladelphia
$598
Find similar
Iberia
Dec 3
PHL8:00 pmPhiladelphia
19h 00m
1 stop
OPO8:00 pmPorto
Dec 8
OPO12:25 pmPorto
32h 10m
1 stop
PHL3:35 pmPhiladelphia
$604
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Porto 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, momondo users made 832,500 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Philadelphia to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 11/17

12:40 pm-9:30 am

2 stops15h 50m

Porto

Tue 11/25

6:00 am-4:00 pm

1 stop15h 00m

$584

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 11/16

10:34 am-9:30 am

2 stops17h 56m

Porto

Tue 11/25

6:00 am-4:00 pm

1 stop15h 00m

$590

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 11/16

8:00 pm-11:45 am

1 stop10h 45m

Porto

Tue 11/25

8:20 am-3:35 pm

1 stop12h 15m

$594

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 12/3

1:35 pm-8:00 pm

2 stops25h 25m

Porto

Tue 12/9

8:20 am-3:35 pm

1 stop12h 15m

$598

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 11/16

7:45 pm-4:40 pm

1 stop15h 55m

Porto

Mon 11/24

8:40 pm-3:35 pm

1 stop23h 55m

$599

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sat 11/29

3:30 pm-11:10 am

2 stops38h 40m

Porto

Tue 12/9

6:00 am-3:49 pm

2 stops38h 49m

$601

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sat 11/15

3:30 pm-11:10 am

2 stops38h 40m

Porto

Tue 11/25

6:00 am-10:56 pm

2 stops21h 56m

$602

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 12/1

3:30 pm-11:40 am

2 stops15h 10m

Porto

Mon 12/8

7:20 pm-9:36 pm

2 stops31h 16m

$619

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 11/18

5:40 pm-11:40 am

1 stop13h 00m

Porto

Wed 11/26

4:15 pm-4:05 pm

1 stop28h 50m

$631

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 10/15

5:35 pm-11:20 am

1 stop12h 45m

Porto

Wed 10/22

6:00 am-4:00 pm

1 stop15h 00m

$648

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

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

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 $667. If you aren’t able to travel during the month of November, then book flights to Porto from Philadelphia during January instead. Flights to Porto in January, while not as cheap as those in November, still average around $678.

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

The cheapest day to depart on your flight to Porto is on a Sunday when prices can be found for as low as $814. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $1,097. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

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 $811 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 $634 on momondo.

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

Best Price Found

$267

Fastest flight time

10h 45m

Direct flights

None

Airports in Porto

1 airport
The best one-way flight to Porto from Philadelphia in the past 72 hours is $267. The best round-trip flight deal from Philadelphia to Porto found on momondo in the last 72 hours is $584.
The fastest flight from Philadelphia to Porto takes 10h 45m
There are no direct flights from Philadelphia to Porto. Popular non-direct route for this connection is Philadelphia Airport - Porto Airport.
There is 1 airport near Porto: Porto (OPO)
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  • How far is Philadelphia to Porto by plane?

    A flight from Philadelphia to Porto will travel around 3401.6 mi. 10h 45m 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?

  • 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?

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
American AirlinesPriceFrom $567Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $601Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
British AirwaysPriceFrom $616Free CancellationRating
6.6
7,277 reviews
Search British Airways flights
LufthansaPriceFrom $617Free CancellationRating
6.8
7,330 reviews
Search Lufthansa flights
IberiaPriceFrom $657Free CancellationRating
7.0
2,884 reviews
Search Iberia flights
Air CanadaPriceFrom $673Free CancellationRating
7.1
9,992 reviews
Search Air Canada flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Aveiro
Coimbra
Braga
Matosinhos
Caminha
Lamego
Guimarães
Esposende
Chaves
Arcos de Valdevez
Espinho
Viseu
Ponte de Lima
Pinhao
Santa Maria da Feira
Curia
Penafiel
Mesao Frio
Baiao

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.

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