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Cheap flights from Philadelphia to Porto from $387

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 8/20. 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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0 bags

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Find the cheapest flights from Philadelphia to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:10 am - 9:30 am
PHL
-
OPO
23h 20m
2 stops
United Airlines Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$701United Airlines
Wed, Oct 28 - Tue, Nov 3
United Airlines Logo
10:10 am - 9:30 am
PHL
-
OPO
19h 20m
2 stops
United Airlines Logo
12:35 pm - 12:25 pm
OPO
-
PHL
28h 50m
2 stops
$711United Airlines
Wed, Oct 28 - Tue, Nov 3
Iberia Logo
8:50 pm - 11:45 am
PHL
-
OPO
10h 55m
1 stop
Iberia Logo
4:40 pm - 3:50 pm
OPO
-
PHL
28h 10m
1 stop
$716Iberia
Wed, Oct 28 - Tue, Nov 3
American Airlines Logo
12:04 pm - 7:40 am
PHL
-
OPO
15h 36m
2 stops
American Airlines Logo
8:20 am - 9:26 pm
OPO
-
PHL
18h 06m
2 stops
$719American Airlines
Wed, Oct 28 - Tue, Nov 3
United Airlines Logo
6:10 am - 9:30 am
PHL
-
OPO
22h 20m
2 stops
United Airlines Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$740United Airlines
Mon, Nov 16 - Thu, Nov 19
Air Canada Logo
3:20 pm - 12:50 pm
PHL
-
OPO
16h 30m
2 stops
Air Canada Logo
6:00 am - 10:56 pm
OPO
-
PHL
21h 56m
2 stops
$750Air Canada
Mon, Nov 16 - Thu, Nov 19
Delta Logo
6:00 am - 9:05 am
PHL
-
OPO
22h 05m
2 stops
Delta Logo
5:00 am - 12:21 am
OPO
-
PHL
24h 21m
2 stops
$752Delta
Sun, Nov 1 - Fri, Nov 6
Air Canada Logo
3:25 pm - 7:00 am
PHL
-
OPO
10h 35m
1 stop
Air Canada Logo
11:20 am - 2:40 pm
OPO
-
PHL
32h 20m
2 stops
$754Air Canada
Tue, Aug 4 - Wed, Aug 19
United Airlines Logo
6:10 am - 9:30 am
PHL
-
OPO
22h 20m
2 stops
United Airlines Logo
6:00 am - 9:24 am
OPO
-
PHL
32h 24m
2 stops
$755United Airlines
Mon, Nov 2 - Fri, Nov 6
Delta Logo
8:25 am - 10:30 am
PHL
-
OPO
21h 05m
2 stops
Delta Logo
11:15 am - 7:24 pm
OPO
-
PHL
37h 09m
2 stops
$756Delta
Mon, Nov 2 - Wed, Nov 4

Air Canada flights from Philadelphia to Porto

Our best Air Canada deals on Philadelphia to Porto flight tickets
Air Canada
Nov 16
PHL3:20 pmPhiladelphia
16h 30m
2 stops
OPO12:50 pmPorto
Nov 19
OPO6:00 amPorto
21h 56m
2 stops
PHL10:56 pmPhiladelphia
$750
Air Canada
Aug 4
PHL3:25 pmPhiladelphia
10h 35m
1 stop
OPO7:00 amPorto
Aug 19
OPO11:20 amPorto
32h 20m
2 stops
PHL2:40 pmPhiladelphia
$754
Air Canada
Aug 5
PHL6:00 amPhiladelphia
20h 00m
2 stops
OPO7:00 amPorto
Aug 19
OPO11:20 amPorto
32h 20m
2 stops
PHL2:40 pmPhiladelphia
$759

SWISS flights from Philadelphia to Porto

Our best SWISS deals on Philadelphia to Porto flight tickets
SWISS
Sep 20
PHL5:40 pmPhiladelphia
33h 15m
2 stops
OPO7:55 amPorto
Sep 28
OPO7:20 pmPorto
25h 45m
2 stops
PHL4:05 pmPhiladelphia
$819
SWISS
Sep 20
PHL5:40 pmPhiladelphia
19h 35m
2 stops
OPO6:15 pmPorto
Sep 28
OPO7:20 pmPorto
25h 45m
2 stops
PHL4:05 pmPhiladelphia
$820

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 May 31, 2026.
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

Cheapest round-trip

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 10/28

6:10 am-9:30 am

2 stops23h 20m

Porto

Tue 11/3

6:00 am-4:05 pm

1 stop15h 05m

$701

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 10/28

10:10 am-9:30 am

2 stops19h 20m

Porto

Tue 11/3

12:35 pm-12:25 pm

2 stops28h 50m

$711

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 10/28

8:50 pm-11:45 am

1 stop10h 55m

Porto

Tue 11/3

4:40 pm-3:50 pm

1 stop28h 10m

$716
Quickest round-trip

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 10/28

12:04 pm-7:40 am

2 stops15h 36m

Porto

Tue 11/3

8:20 am-9:26 pm

2 stops18h 06m

$719

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 11/16

6:10 am-9:30 am

2 stops22h 20m

Porto

Thu 11/19

6:00 am-4:05 pm

1 stop15h 05m

$740

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 11/16

3:20 pm-12:50 pm

2 stops16h 30m

Porto

Thu 11/19

6:00 am-10:56 pm

2 stops21h 56m

$750

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 11/1

6:00 am-9:05 am

2 stops22h 05m

Porto

Fri 11/6

5:00 am-12:21 am

2 stops24h 21m

$752

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 8/4

3:25 pm-7:00 am

1 stop10h 35m

Porto

Wed 8/19

11:20 am-2:40 pm

2 stops32h 20m

$754

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 11/2

6:10 am-9:30 am

2 stops22h 20m

Porto

Fri 11/6

6:00 am-9:24 am

2 stops32h 24m

$755

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 11/2

8:25 am-10:30 am

2 stops21h 05m

Porto

Wed 11/4

11:15 am-7:24 pm

2 stops37h 09m

$756

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 typical price of a round-trip flight between Philadelphia and Porto?

What is the cheapest month to fly to Porto?

The month of January is, on average, the cheapest month to fly to Porto from Philadelphia, with most prices found around $496. If you aren’t able to travel during the month of January, then book flights to Porto from Philadelphia during November instead. Flights to Porto in November, while not as cheap as those in January, still average around $612.

Can stopping save me money on Philadelphia to Porto flights?

You could potentially save up to 18% 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

10h 35m

Direct flights

None
The fastest flight from Philadelphia to Porto takes 10h 35m
There are no direct flights from Philadelphia to Porto. There are no popular flight routes from Philadelphia to Porto.
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Frequently asked questions about flying from Philadelphia to Porto

  • How far is Philadelphia to Porto by plane?

    A flight from Philadelphia to Porto will travel around 3401.6 mi. 10h 35m 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
United AirlinesPriceFrom $489Free CancellationRating
7.4
9,768 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,221 reviews
Search Iberia flights
LufthansaPriceFrom $549Free CancellationRating
6.8
8,031 reviews
Search Lufthansa flights
American AirlinesPriceFrom $674Free CancellationRating
7.1
11,640 reviews
Search American Airlines flights

Traveling to a place near Porto?

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