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Cheap flights from Philadelphia to Porto from $367

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 3/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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.
Iberia Logo
8:15 pm - 8:00 pm
PHL
-
OPO
18h 45m
1 stop
Iberia Logo
8:20 am - 5:35 pm
OPO
-
PHL
14h 15m
1 stop
$486Iberia
Tue, Apr 7 - Wed, Apr 15
Delta Logo
11:08 am - 3:25 pm
PHL
-
OPO
23h 17m
2 stops
Delta Logo
5:00 am - 10:12 pm
OPO
-
PHL
22h 12m
2 stops
$493Delta
Tue, Apr 7 - Wed, Apr 15
Delta Logo
11:16 am - 10:30 am
PHL
-
OPO
19h 14m
2 stops
Delta Logo
5:00 am - 9:23 pm
OPO
-
PHL
21h 23m
2 stops
$495Delta
Tue, Mar 24 - Tue, Mar 31
Iberia Logo
8:15 pm - 7:40 am
PHL
-
OPO
30h 25m
1 stop
Iberia Logo
8:40 pm - 5:35 pm
OPO
-
PHL
25h 55m
1 stop
$506Iberia
Tue, Apr 7 - Wed, Apr 15
Iberia Logo
8:15 pm - 7:40 am
PHL
-
OPO
30h 25m
1 stop
Iberia Logo
12:25 pm - 6:55 pm
OPO
-
PHL
35h 30m
2 stops
$510Iberia
Tue, Apr 7 - Wed, Apr 15
Multiple Airlines Logo
10:30 am - 7:40 am
PHL
-
OPO
16h 10m
2 stops
Multiple Airlines Logo
8:40 pm - 5:35 pm
OPO
-
PHL
25h 55m
1 stop
$515Multiple Airlines
Tue, Apr 7 - Wed, Apr 15
Multiple Airlines Logo
12:26 pm - 10:30 am
PHL
-
OPO
18h 04m
2 stops
Multiple Airlines Logo
7:00 pm - 4:33 pm
OPO
-
PHL
26h 33m
2 stops
$523Multiple Airlines
Mon, Mar 9 - Mon, Mar 30
Iberia Logo
8:15 pm - 8:00 pm
PHL
-
OPO
18h 45m
1 stop
Iberia Logo
8:20 am - 5:35 pm
OPO
-
PHL
14h 15m
1 stop
$536Iberia
Mon, May 4 - Sun, May 10
Multiple Airlines Logo
3:36 pm - 10:30 am
PHL
-
OPO
14h 54m
2 stops
Multiple Airlines Logo
5:00 am - 4:53 pm
OPO
-
PHL
16h 53m
2 stops
$545Multiple Airlines
Mon, Mar 9 - Mon, Mar 30
Multiple Airlines Logo
8:15 pm - 7:40 am
PHL
-
OPO
30h 25m
1 stop
Multiple Airlines Logo
8:40 pm - 5:35 pm
OPO
-
PHL
25h 55m
1 stop
$549Multiple Airlines
Tue, Apr 7 - Wed, Apr 15

Iberia flights from Philadelphia to Porto

Our best Iberia deals on Philadelphia to Porto flight tickets
Iberia
Apr 7
PHL8:15 pmPhiladelphia
18h 45m
1 stop
OPO8:00 pmPorto
Apr 15
OPO8:20 amPorto
14h 15m
1 stop
PHL5:35 pmPhiladelphia
$486
Iberia
Apr 7
PHL8:15 pmPhiladelphia
30h 25m
1 stop
OPO7:40 amPorto
Apr 15
OPO8:40 pmPorto
25h 55m
1 stop
PHL5:35 pmPhiladelphia
$506
Iberia
Apr 7
PHL8:15 pmPhiladelphia
30h 25m
1 stop
OPO7:40 amPorto
Apr 15
OPO12:25 pmPorto
35h 30m
2 stops
PHL6:55 pmPhiladelphia
$510

Delta flights from Philadelphia to Porto

Our best Delta deals on Philadelphia to Porto flight tickets
Delta
Apr 7
PHL11:08 amPhiladelphia
23h 17m
2 stops
OPO3:25 pmPorto
Apr 15
OPO5:00 amPorto
22h 12m
2 stops
PHL10:12 pmPhiladelphia
$493
Delta
Mar 24
PHL11:16 amPhiladelphia
19h 14m
2 stops
OPO10:30 amPorto
Mar 31
OPO5:00 amPorto
21h 23m
2 stops
PHL9:23 pmPhiladelphia
$495
Delta
Aug 4
PHL9:42 amPhiladelphia
19h 48m
2 stops
OPO10:30 amPorto
Aug 27
OPO5:00 amPorto
19h 22m
2 stops
PHL7:22 pmPhiladelphia
$554

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 February 17, 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

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/7

8:15 pm-8:00 pm

1 stop18h 45m

Porto

Wed 4/15

8:20 am-5:35 pm

1 stop14h 15m

$486

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/7

11:08 am-3:25 pm

2 stops23h 17m

Porto

Wed 4/15

5:00 am-10:12 pm

2 stops22h 12m

$493

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/24

11:16 am-10:30 am

2 stops19h 14m

Porto

Tue 3/31

5:00 am-9:23 pm

2 stops21h 23m

$495

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/7

8:15 pm-7:40 am

1 stop30h 25m

Porto

Wed 4/15

8:40 pm-5:35 pm

1 stop25h 55m

$506

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/7

8:15 pm-7:40 am

1 stop30h 25m

Porto

Wed 4/15

12:25 pm-6:55 pm

2 stops35h 30m

$510

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/7

10:30 am-7:40 am

2 stops16h 10m

Porto

Wed 4/15

8:40 pm-5:35 pm

1 stop25h 55m

$515

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

12:26 pm-10:30 am

2 stops18h 04m

Porto

Mon 3/30

7:00 pm-4:33 pm

2 stops26h 33m

$523

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 5/4

8:15 pm-8:00 pm

1 stop18h 45m

Porto

Sun 5/10

8:20 am-5:35 pm

1 stop14h 15m

$536

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

3:36 pm-10:30 am

2 stops14h 54m

Porto

Mon 3/30

5:00 am-4:53 pm

2 stops16h 53m

$545

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/7

8:15 pm-7:40 am

1 stop30h 25m

Porto

Wed 4/15

8:40 pm-5:35 pm

1 stop25h 55m

$549

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 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 $616.

Can stopping save me money on Philadelphia to Porto flights?

You could potentially save up to 17% 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

14h 54m

Direct flights

None
The fastest flight from Philadelphia to Porto takes 14h 54m
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. 14h 54m 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
9,308 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,116 reviews
Search Iberia flights
American AirlinesPriceFrom $567Free CancellationRating
7.2
11,294 reviews
Search American Airlines flights
LufthansaPriceFrom $576Free CancellationRating
6.8
7,786 reviews
Search Lufthansa 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
Matosinhos
Braga
Aveiro
Esposende
Lamego
Guimarães
Pinhao
Chaves
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
Curia
Penafiel
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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