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Cheap flights from Philadelphia to Porto from $289

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 7/19. 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.
Delta Logo
12:26 pm - 3:25 pm
PHL
-
OPO
21h 59m
2 stops
Delta Logo
5:00 am - 7:18 pm
OPO
-
PHL
19h 18m
2 stops
$493Delta
Wed, Apr 8 - Wed, Apr 15
Multiple Airlines Logo
12:26 pm - 10:30 am
PHL
-
OPO
18h 04m
2 stops
Multiple Airlines Logo
5:00 am - 4:53 pm
OPO
-
PHL
16h 53m
2 stops
$494Multiple Airlines
Tue, Mar 24 - Tue, Mar 31
Iberia Logo
8:15 pm - 8:00 pm
PHL
-
OPO
18h 45m
1 stop
Iberia Logo
8:40 pm - 5:35 pm
OPO
-
PHL
25h 55m
1 stop
$497Iberia
Sun, Apr 12 - Tue, Apr 28
Delta Logo
6:58 pm - 6:20 pm
PHL
-
OPO
18h 22m
2 stops
Delta Logo
5:00 am - 4:37 pm
OPO
-
PHL
16h 37m
2 stops
$498Delta
Tue, Apr 28 - Tue, May 5
Delta Logo
5:32 pm - 3:25 pm
PHL
-
OPO
16h 53m
2 stops
Delta Logo
5:55 am - 11:58 pm
OPO
-
PHL
23h 03m
2 stops
$500Delta
Tue, Apr 14 - Fri, Apr 24
Multiple Airlines Logo
7:35 pm - 8:20 pm
PHL
-
OPO
19h 45m
1 stop
Multiple Airlines Logo
8:40 pm - 5:40 pm
OPO
-
PHL
26h 00m
1 stop
$504Multiple Airlines
Sun, Apr 12 - Tue, Apr 28
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
$505Iberia
Tue, Apr 7 - Wed, Apr 15
Iberia Logo
8:25 pm - 8:00 pm
PHL
-
OPO
18h 35m
1 stop
Iberia Logo
8:40 pm - 5:35 pm
OPO
-
PHL
25h 55m
1 stop
$527Iberia
Mon, Apr 6 - Wed, Apr 15
Delta Logo
5:33 pm - 5:55 pm
PHL
-
OPO
19h 22m
2 stops
Delta Logo
5:00 am - 6:08 pm
OPO
-
PHL
18h 08m
2 stops
$528Delta
Mon, Apr 6 - Wed, Apr 15
British Airways Logo
8:40 pm - 4:45 pm
PHL
-
OPO
16h 05m
1 stop
British Airways Logo
6:35 pm - 2:35 pm
OPO
-
PHL
24h 00m
1 stop
$529British Airways
Wed, Mar 11 - Wed, Mar 18

British Airways flights from Philadelphia to Porto

Our best British Airways deals on Philadelphia to Porto flight tickets
British Airways
Mar 11
PHL8:40 pmPhiladelphia
16h 05m
1 stop
OPO4:45 pmPorto
Mar 18
OPO6:35 pmPorto
24h 00m
1 stop
PHL2:35 pmPhiladelphia
$529
British Airways
Apr 12
PHL2:45 pmPhiladelphia
24h 35m
2 stops
OPO8:20 pmPorto
Apr 28
OPO8:40 pmPorto
20h 30m
1 stop
PHL12:10 pmPhiladelphia
$557
British Airways
Mar 11
PHL4:43 pmPhiladelphia
20h 02m
2 stops
OPO4:45 pmPorto
Mar 18
OPO6:35 pmPorto
24h 00m
1 stop
PHL2:35 pmPhiladelphia
$577

Delta flights from Philadelphia to Porto

Our best Delta deals on Philadelphia to Porto flight tickets
Delta
Apr 8
PHL12:26 pmPhiladelphia
21h 59m
2 stops
OPO3:25 pmPorto
Apr 15
OPO5:00 amPorto
19h 18m
2 stops
PHL7:18 pmPhiladelphia
$493
Delta
Apr 28
PHL6:58 pmPhiladelphia
18h 22m
2 stops
OPO6:20 pmPorto
May 7
OPO5:00 amPorto
19h 29m
2 stops
PHL7:29 pmPhiladelphia
$498
Delta
Apr 14
PHL5:32 pmPhiladelphia
16h 53m
2 stops
OPO3:25 pmPorto
Apr 24
OPO5:55 amPorto
23h 03m
2 stops
PHL11:58 pmPhiladelphia
$500

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 25, 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

Wed 4/8

12:26 pm-3:25 pm

2 stops21h 59m

Porto

Wed 4/15

5:00 am-7:18 pm

2 stops19h 18m

$493

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/24

12:26 pm-10:30 am

2 stops18h 04m

Porto

Tue 3/31

5:00 am-4:53 pm

2 stops16h 53m

$494

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 4/12

8:15 pm-8:00 pm

1 stop18h 45m

Porto

Tue 4/28

8:40 pm-5:35 pm

1 stop25h 55m

$497

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/28

6:58 pm-6:20 pm

2 stops18h 22m

Porto

Tue 5/5

5:00 am-4:37 pm

2 stops16h 37m

$498

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/14

5:32 pm-3:25 pm

2 stops16h 53m

Porto

Fri 4/24

5:55 am-11:58 pm

2 stops23h 03m

$500

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 4/12

7:35 pm-8:20 pm

1 stop19h 45m

Porto

Tue 4/28

8:40 pm-5:40 pm

1 stop26h 00m

$504

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

$505

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 4/6

8:25 pm-8:00 pm

1 stop18h 35m

Porto

Wed 4/15

8:40 pm-5:35 pm

1 stop25h 55m

$527

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 4/6

5:33 pm-5:55 pm

2 stops19h 22m

Porto

Wed 4/15

5:00 am-6:08 pm

2 stops18h 08m

$528

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 3/11

8:40 pm-4:45 pm

1 stop16h 05m

Porto

Wed 3/18

6:35 pm-2:35 pm

1 stop24h 00m

$529

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 5% 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

15h 21m

Direct flights

None
The fastest flight from Philadelphia to Porto takes 15h 21m
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. 15h 21m 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
9,347 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,125 reviews
Search Iberia flights
American AirlinesPriceFrom $567Free CancellationRating
7.1
11,348 reviews
Search American Airlines flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,810 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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