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Cheap flights from Philadelphia to Porto from $394

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 8/3. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Philadelphia to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
5:40 pm - 2:15 pm
PHL
-
OPO
15h 35m
1 stop
Lufthansa Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$729Lufthansa
Sun, May 3 - Tue, May 19
Multiple Airlines Logo
11:32 am - 12:00 pm
PHL
-
OPO
19h 28m
2 stops
Multiple Airlines Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$732Multiple Airlines
Sun, May 3 - Tue, May 19
Multiple Airlines Logo
11:32 am - 6:15 pm
PHL
-
OPO
25h 43m
2 stops
Multiple Airlines Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$738Multiple Airlines
Sun, May 3 - Thu, May 14
Lufthansa Logo
5:40 pm - 2:15 pm
PHL
-
OPO
15h 35m
1 stop
Lufthansa Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$742Lufthansa
Sun, May 3 - Thu, May 14
Multiple Airlines Logo
11:32 am - 6:15 pm
PHL
-
OPO
25h 43m
2 stops
Multiple Airlines Logo
12:10 pm - 10:43 pm
OPO
-
PHL
15h 33m
2 stops
$746Multiple Airlines
Sun, May 3 - Thu, May 14
KLM Logo
6:58 pm - 3:30 pm
PHL
-
OPO
15h 32m
2 stops
KLM Logo
5:00 am - 7:27 pm
OPO
-
PHL
19h 27m
2 stops
$748KLM
Sun, May 3 - Thu, May 14
Iberia Logo
8:15 pm - 7:40 am
PHL
-
OPO
30h 25m
1 stop
Iberia Logo
4:40 pm - 5:40 pm
OPO
-
PHL
30h 00m
1 stop
$755Iberia
Sun, May 3 - Thu, May 14
Delta Logo
3:42 pm - 10:00 pm
PHL
-
OPO
25h 18m
2 stops
Delta Logo
4:20 pm - 11:07 pm
OPO
-
PHL
35h 47m
2 stops
$756Delta
Sun, May 3 - Mon, May 18
Delta Logo
6:58 pm - 3:30 pm
PHL
-
OPO
15h 32m
2 stops
Delta Logo
4:20 pm - 5:19 pm
OPO
-
PHL
29h 59m
2 stops
$758Delta
Sun, May 3 - Mon, May 18
Iberia Logo
8:15 pm - 7:40 am
PHL
-
OPO
30h 25m
1 stop
Iberia Logo
8:20 am - 6:55 pm
OPO
-
PHL
39h 35m
2 stops
$759Iberia
Sun, May 3 - Thu, May 14

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Lufthansa flights from Philadelphia to Porto

Our best Lufthansa deals on Philadelphia to Porto flight tickets
Lufthansa
May 3
PHL5:40 pmPhiladelphia
15h 35m
1 stop
OPO2:15 pmPorto
May 19
OPO6:00 amPorto
15h 05m
1 stop
PHL4:05 pmPhiladelphia
$729
Lufthansa
May 3
PHL5:40 pmPhiladelphia
15h 35m
1 stop
OPO2:15 pmPorto
May 14
OPO6:00 amPorto
15h 05m
1 stop
PHL4:05 pmPhiladelphia
$742
Lufthansa
May 3
PHL5:40 pmPhiladelphia
15h 35m
1 stop
OPO2:15 pmPorto
May 18
OPO3:10 pmPorto
29h 55m
1 stop
PHL4:05 pmPhiladelphia
$764

Air Canada flights from Philadelphia to Porto

Our best Air Canada deals on Philadelphia to Porto flight tickets
Air Canada
Sep 20
PHL10:05 amPhiladelphia
27h 10m
2 stops
OPO6:15 pmPorto
Sep 29
OPO6:00 amPorto
20h 32m
2 stops
PHL9:32 pmPhiladelphia
$770
Air Canada
Sep 29
PHL10:05 amPhiladelphia
15h 55m
1 stop
OPO7:00 amPorto
Oct 13
OPO12:15 pmPorto
31h 07m
2 stops
PHL2:22 pmPhiladelphia
$784

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 23, 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
Quickest round-trip

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

5:40 pm-2:15 pm

1 stop15h 35m

Porto

Tue 5/19

6:00 am-4:05 pm

1 stop15h 05m

$729

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

11:32 am-12:00 pm

2 stops19h 28m

Porto

Tue 5/19

6:00 am-4:05 pm

1 stop15h 05m

$732

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

11:32 am-6:15 pm

2 stops25h 43m

Porto

Thu 5/14

6:00 am-4:05 pm

1 stop15h 05m

$738

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

5:40 pm-2:15 pm

1 stop15h 35m

Porto

Thu 5/14

6:00 am-4:05 pm

1 stop15h 05m

$742

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

11:32 am-6:15 pm

2 stops25h 43m

Porto

Thu 5/14

12:10 pm-10:43 pm

2 stops15h 33m

$746

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

6:58 pm-3:30 pm

2 stops15h 32m

Porto

Thu 5/14

5:00 am-7:27 pm

2 stops19h 27m

$748

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

8:15 pm-7:40 am

1 stop30h 25m

Porto

Thu 5/14

4:40 pm-5:40 pm

1 stop30h 00m

$755

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

3:42 pm-10:00 pm

2 stops25h 18m

Porto

Mon 5/18

4:20 pm-11:07 pm

2 stops35h 47m

$756

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

6:58 pm-3:30 pm

2 stops15h 32m

Porto

Mon 5/18

4:20 pm-5:19 pm

2 stops29h 59m

$758

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 5/3

8:15 pm-7:40 am

1 stop30h 25m

Porto

Thu 5/14

8:20 am-6:55 pm

2 stops39h 35m

$759

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 52% 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.
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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 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
9,644 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,195 reviews
Search Iberia flights
American AirlinesPriceFrom $567Free CancellationRating
7.1
11,664 reviews
Search American Airlines flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,944 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
Lamego
Esposende
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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