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Cheap flights from Philadelphia to Porto from $395

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 7/27. 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.
Air Canada Logo
10:05 am - 7:00 am
PHL
-
OPO
15h 55m
1 stop
Air Canada Logo
12:15 pm - 2:47 pm
OPO
-
PHL
31h 32m
1 stop
$817Air Canada
Tue, Sep 22 - Tue, Oct 13
United Airlines Logo
9:52 am - 6:55 am
PHL
-
OPO
16h 03m
2 stops
United Airlines Logo
11:50 am - 7:19 pm
OPO
-
PHL
36h 29m
2 stops
$820United Airlines
Thu, Aug 13 - Thu, Aug 27
Air Canada Logo
10:28 am - 7:00 am
PHL
-
OPO
15h 32m
2 stops
Air Canada Logo
11:40 am - 9:32 pm
OPO
-
PHL
14h 52m
1 stop
$822Air Canada
Tue, Sep 22 - Thu, Oct 15
Air Canada Logo
10:05 am - 7:00 am
PHL
-
OPO
15h 55m
1 stop
Air Canada Logo
12:45 pm - 10:46 pm
OPO
-
PHL
39h 01m
2 stops
$825Air Canada
Tue, Sep 22 - Wed, Oct 14
United Airlines Logo
3:25 pm - 7:00 am
PHL
-
OPO
10h 35m
1 stop
United Airlines Logo
12:15 pm - 2:49 pm
OPO
-
PHL
31h 34m
1 stop
$827United Airlines
Wed, Aug 19 - Sun, Aug 30
United Airlines Logo
10:05 am - 7:00 am
PHL
-
OPO
15h 55m
1 stop
United Airlines Logo
12:35 pm - 6:40 pm
OPO
-
PHL
35h 05m
2 stops
$829United Airlines
Tue, Sep 22 - Fri, Oct 16
United Airlines Logo
10:28 am - 9:45 am
PHL
-
OPO
18h 17m
2 stops
United Airlines Logo
12:35 pm - 6:40 pm
OPO
-
PHL
35h 05m
2 stops
$830United Airlines
Sun, Sep 20 - Fri, Oct 16
United Airlines Logo
6:00 am - 7:00 am
PHL
-
OPO
20h 00m
2 stops
United Airlines Logo
12:15 pm - 2:49 pm
OPO
-
PHL
31h 34m
1 stop
$832United Airlines
Wed, Aug 19 - Sun, Aug 30
United Airlines Logo
9:52 am - 6:55 am
PHL
-
OPO
16h 03m
2 stops
United Airlines Logo
11:50 am - 2:49 pm
OPO
-
PHL
31h 59m
1 stop
$833United Airlines
Thu, Aug 13 - Thu, Aug 27
United Airlines Logo
11:30 am - 6:55 am
PHL
-
OPO
14h 25m
2 stops
United Airlines Logo
12:15 pm - 9:32 pm
OPO
-
PHL
38h 17m
2 stops
$848United Airlines
Sat, Sep 19 - Tue, Sep 29

United Airlines flights from Philadelphia to Porto

Our best United Airlines deals on Philadelphia to Porto flight tickets
United Airlines
Aug 13
PHL9:52 amPhiladelphia
16h 03m
2 stops
OPO6:55 amPorto
Aug 27
OPO11:50 amPorto
36h 29m
2 stops
PHL7:19 pmPhiladelphia
$820
United Airlines
Aug 19
PHL3:25 pmPhiladelphia
10h 35m
1 stop
OPO7:00 amPorto
Aug 30
OPO12:15 pmPorto
31h 34m
1 stop
PHL2:49 pmPhiladelphia
$827
United Airlines
Sep 22
PHL10:05 amPhiladelphia
15h 55m
1 stop
OPO7:00 amPorto
Oct 16
OPO12:35 pmPorto
35h 05m
2 stops
PHL6:40 pmPhiladelphia
$829

Iberia flights from Philadelphia to Porto

Our best Iberia deals on Philadelphia to Porto flight tickets
Iberia
Sep 20
PHL4:15 pmPhiladelphia
22h 45m
1 stop
OPO8:00 pmPorto
Sep 28
OPO8:40 pmPorto
26h 00m
1 stop
PHL5:40 pmPhiladelphia
$857
Iberia
Sep 20
PHL4:15 pmPhiladelphia
22h 45m
1 stop
OPO8:00 pmPorto
Sep 28
OPO8:40 pmPorto
23h 50m
2 stops
PHL3:30 pmPhiladelphia
$865
Iberia
Sep 20
PHL5:45 pmPhiladelphia
17h 15m
2 stops
OPO4:00 pmPorto
Sep 28
OPO8:40 pmPorto
23h 50m
2 stops
PHL3:30 pmPhiladelphia
$878

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 April 9, 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

Tue 9/22

10:05 am-7:00 am

1 stop15h 55m

Porto

Tue 10/13

12:15 pm-2:47 pm

1 stop31h 32m

$817

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Thu 8/13

9:52 am-6:55 am

2 stops16h 03m

Porto

Thu 8/27

11:50 am-7:19 pm

2 stops36h 29m

$820
Quickest round-trip

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 9/22

10:28 am-7:00 am

2 stops15h 32m

Porto

Thu 10/15

11:40 am-9:32 pm

1 stop14h 52m

$822

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 9/22

10:05 am-7:00 am

1 stop15h 55m

Porto

Wed 10/14

12:45 pm-10:46 pm

2 stops39h 01m

$825

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 8/19

3:25 pm-7:00 am

1 stop10h 35m

Porto

Sun 8/30

12:15 pm-2:49 pm

1 stop31h 34m

$827

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 9/22

10:05 am-7:00 am

1 stop15h 55m

Porto

Fri 10/16

12:35 pm-6:40 pm

2 stops35h 05m

$829

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 9/20

10:28 am-9:45 am

2 stops18h 17m

Porto

Fri 10/16

12:35 pm-6:40 pm

2 stops35h 05m

$830

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 8/19

6:00 am-7:00 am

2 stops20h 00m

Porto

Sun 8/30

12:15 pm-2:49 pm

1 stop31h 34m

$832

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Thu 8/13

9:52 am-6:55 am

2 stops16h 03m

Porto

Thu 8/27

11:50 am-2:49 pm

1 stop31h 59m

$833

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sat 9/19

11:30 am-6:55 am

2 stops14h 25m

Porto

Tue 9/29

12:15 pm-9:32 pm

2 stops38h 17m

$848

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 30% 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

12h 30m

Direct flights

None
The fastest flight from Philadelphia to Porto takes 12h 30m
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. 12h 30m 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
9,557 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,174 reviews
Search Iberia flights
American AirlinesPriceFrom $567Free CancellationRating
7.1
11,564 reviews
Search American Airlines flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,900 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
Ponte de Lima
Viseu
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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