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Cheap flights from Philadelphia to Porto from $310

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 5/3. 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
1 adult, Economy, 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
6:00 am - 3:25 pm
PHL
-
OPO
28h 25m
2 stops
Delta Logo
5:00 am - 11:58 pm
OPO
-
PHL
23h 58m
2 stops
$562Delta
Sun, Apr 19 - Tue, Apr 28
Delta Logo
5:33 pm - 6:20 pm
PHL
-
OPO
19h 47m
2 stops
Delta Logo
5:00 am - 10:12 pm
OPO
-
PHL
22h 12m
2 stops
$567Delta
Wed, Apr 8 - Wed, Apr 22
Multiple Airlines Logo
6:40 pm - 8:35 pm
PHL
-
OPO
20h 55m
1 stop
Multiple Airlines Logo
8:40 pm - 5:40 pm
OPO
-
PHL
26h 00m
1 stop
$572Multiple Airlines
Sun, Apr 12 - Tue, Apr 28
Delta Logo
6:58 pm - 6:20 pm
PHL
-
OPO
18h 22m
2 stops
Delta Logo
5:55 am - 10:50 pm
OPO
-
PHL
21h 55m
2 stops
$574Delta
Tue, Apr 14 - Fri, Apr 24
Multiple Airlines Logo
10:30 am - 7:40 am
PHL
-
OPO
16h 10m
2 stops
Multiple Airlines Logo
8:40 pm - 5:40 pm
OPO
-
PHL
26h 00m
1 stop
$583Multiple Airlines
Mon, Apr 13 - Tue, Apr 28
British Airways Logo
6:40 pm - 8:35 pm
PHL
-
OPO
20h 55m
1 stop
British Airways Logo
12:25 pm - 8:58 pm
OPO
-
PHL
37h 33m
2 stops
$584British Airways
Sun, Apr 12 - Tue, Apr 28
Iberia Logo
10:05 pm - 11:45 am
PHL
-
OPO
32h 40m
2 stops
Iberia Logo
8:40 pm - 4:47 pm
OPO
-
PHL
49h 07m
2 stops
$591Iberia
Mon, Apr 13 - Mon, Apr 20
Delta Logo
9:42 am - 3:25 pm
PHL
-
OPO
24h 43m
2 stops
Delta Logo
5:00 am - 5:47 pm
OPO
-
PHL
17h 47m
2 stops
$592Delta
Mon, May 4 - Wed, May 13
Multiple Airlines Logo
6:45 pm - 8:35 pm
PHL
-
OPO
20h 50m
1 stop
Multiple Airlines Logo
8:40 pm - 5:40 pm
OPO
-
PHL
26h 00m
1 stop
$602Multiple Airlines
Sun, May 3 - Wed, May 13
Iberia Logo
8:15 pm - 7:40 am
PHL
-
OPO
30h 25m
1 stop
Iberia Logo
8:40 pm - 5:40 pm
OPO
-
PHL
26h 00m
1 stop
$604Iberia
Sun, May 3 - Wed, May 13

Iberia flights from Philadelphia to Porto

Our best Iberia deals on Philadelphia to Porto flight tickets
Iberia
Apr 12
PHL8:15 pmPhiladelphia
30h 25m
1 stop
OPO7:40 amPorto
Apr 28
OPO8:40 pmPorto
23h 25m
2 stops
PHL3:05 pmPhiladelphia
$576
Iberia
Apr 13
PHL10:05 pmPhiladelphia
32h 40m
2 stops
OPO11:45 amPorto
Apr 20
OPO8:40 pmPorto
49h 07m
2 stops
PHL4:47 pmPhiladelphia
$591
Iberia
May 3
PHL8:15 pmPhiladelphia
30h 25m
1 stop
OPO7:40 amPorto
May 13
OPO8:40 pmPorto
26h 00m
1 stop
PHL5:40 pmPhiladelphia
$604

Delta flights from Philadelphia to Porto

Our best Delta deals on Philadelphia to Porto flight tickets
Delta
Apr 19
PHL6:00 amPhiladelphia
28h 25m
2 stops
OPO3:25 pmPorto
Apr 28
OPO5:00 amPorto
23h 58m
2 stops
PHL11:58 pmPhiladelphia
$562
Delta
Apr 8
PHL12:26 pmPhiladelphia
22h 04m
2 stops
OPO3:30 pmPorto
Apr 22
OPO5:00 amPorto
16h 37m
2 stops
PHL4:37 pmPhiladelphia
$567
Delta
Mar 18
PHL12:26 pmPhiladelphia
18h 04m
2 stops
OPO10:30 amPorto
Mar 24
OPO11:25 amPorto
15h 35m
2 stops
PHL11:00 pmPhiladelphia
$569

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 March 10, 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

Sun 4/19

6:00 am-3:25 pm

2 stops28h 25m

Porto

Tue 4/28

5:00 am-11:58 pm

2 stops23h 58m

$562

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 4/8

5:33 pm-6:20 pm

2 stops19h 47m

Porto

Wed 4/22

5:00 am-10:12 pm

2 stops22h 12m

$567

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 4/12

6:40 pm-8:35 pm

1 stop20h 55m

Porto

Tue 4/28

8:40 pm-5:40 pm

1 stop26h 00m

$572
Quickest round-trip

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/14

6:58 pm-6:20 pm

2 stops18h 22m

Porto

Fri 4/24

5:55 am-10:50 pm

2 stops21h 55m

$574

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 4/13

10:30 am-7:40 am

2 stops16h 10m

Porto

Tue 4/28

8:40 pm-5:40 pm

1 stop26h 00m

$583

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 4/12

6:40 pm-8:35 pm

1 stop20h 55m

Porto

Tue 4/28

12:25 pm-8:58 pm

2 stops37h 33m

$584

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 4/13

10:05 pm-11:45 am

2 stops32h 40m

Porto

Mon 4/20

8:40 pm-4:47 pm

2 stops49h 07m

$591

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 5/4

9:42 am-3:25 pm

2 stops24h 43m

Porto

Wed 5/13

5:00 am-5:47 pm

2 stops17h 47m

$592

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

6:45 pm-8:35 pm

1 stop20h 50m

Porto

Wed 5/13

8:40 pm-5:40 pm

1 stop26h 00m

$602

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

8:15 pm-7:40 am

1 stop30h 25m

Porto

Wed 5/13

8:40 pm-5:40 pm

1 stop26h 00m

$604

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 $612.

Can stopping save me money on Philadelphia to Porto flights?

You could potentially save up to 4% 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 25m

Direct flights

None
The fastest flight from Philadelphia to Porto takes 10h 25m
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. 10h 25m 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
9,414 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,133 reviews
Search Iberia flights
American AirlinesPriceFrom $567Free CancellationRating
7.1
11,420 reviews
Search American Airlines flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,843 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
Braga
Aveiro
Matosinhos
Esposende
Lamego
Chaves
Pinhao
Guimarães
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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