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Cheap flights from Philadelphia to Porto from $348

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 10/14. 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.
United Airlines Logo
10:30 am - 7:00 am
PHL
-
OPO
15h 30m
2 stops
United Airlines Logo
12:45 pm - 11:21 pm
OPO
-
PHL
39h 36m
2 stops
$729United Airlines
mié., oct. 14 - mié., oct. 21
United Airlines Logo
10:30 am - 7:00 am
PHL
-
OPO
15h 30m
2 stops
United Airlines Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$731United Airlines
mié., oct. 14 - mié., oct. 21
United Airlines Logo
7:55 pm - 9:45 am
PHL
-
OPO
32h 50m
2 stops
United Airlines Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$768United Airlines
sáb., sep. 19 - mar., sep. 29
United Airlines Logo
6:10 am - 9:30 am
PHL
-
OPO
23h 20m
2 stops
United Airlines Logo
6:00 am - 2:47 pm
OPO
-
PHL
37h 47m
2 stops
$781United Airlines
dom., oct. 25 - dom., nov. 1
Iberia Logo
4:15 pm - 8:00 pm
PHL
-
OPO
22h 45m
1 stop
Iberia Logo
4:40 pm - 5:40 pm
OPO
-
PHL
30h 00m
1 stop
$785Iberia
dom., sep. 20 - lun., sep. 28
United Airlines Logo
7:55 pm - 9:45 am
PHL
-
OPO
32h 50m
2 stops
United Airlines Logo
12:15 pm - 5:22 pm
OPO
-
PHL
34h 07m
2 stops
$789United Airlines
sáb., sep. 19 - mar., sep. 29
Iberia Logo
4:15 pm - 8:00 pm
PHL
-
OPO
22h 45m
1 stop
Iberia Logo
8:40 pm - 3:30 pm
OPO
-
PHL
23h 50m
2 stops
$793Iberia
dom., sep. 20 - lun., sep. 28
Iberia Logo
4:15 pm - 8:00 pm
PHL
-
OPO
22h 45m
1 stop
Iberia Logo
8:40 pm - 3:30 pm
OPO
-
PHL
23h 50m
2 stops
$794Iberia
dom., sep. 20 - lun., sep. 28
Iberia Logo
8:30 pm - 11:45 am
PHL
-
OPO
10h 15m
1 stop
Iberia Logo
8:40 pm - 5:50 pm
OPO
-
PHL
26h 10m
1 stop
$796Iberia
mié., oct. 14 - mié., oct. 21
United Airlines Logo
6:44 pm - 6:55 am
PHL
-
OPO
31h 11m
2 stops
United Airlines Logo
12:10 pm - 2:15 pm
OPO
-
PHL
55h 05m
2 stops
$804United Airlines
sáb., sep. 19 - lun., sep. 28

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Delta flights from Philadelphia to Porto

Our best Delta deals on Philadelphia to Porto flight tickets
Delta
Apr 29
PHL3:42 pmPhiladelphia
18h 43m
2 stops
OPO3:25 pmPorto
May 6
OPO5:00 amPorto
17h 23m
2 stops
PHL5:23 pmPhiladelphia
$713
Delta
May 3
PHL6:00 amPhiladelphia
28h 25m
2 stops
OPO3:25 pmPorto
May 19
OPO5:00 amPorto
22h 12m
2 stops
PHL10:12 pmPhiladelphia
$733
Delta
Apr 30
PHL3:42 pmPhiladelphia
18h 43m
2 stops
OPO3:25 pmPorto
May 8
OPO11:25 amPorto
18h 32m
2 stops
PHL12:57 amPhiladelphia
$763

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
OPO4:40 pmPorto
30h 00m
1 stop
PHL5:40 pmPhiladelphia
$785
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
$793
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
$794

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 abril 28, 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

mié. 10/14

10:30 am-7:00 am

2 stops15h 30m

Porto

mié. 10/21

12:45 pm-11:21 pm

2 stops39h 36m

$729
Quickest round-trip

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

mié. 10/14

10:30 am-7:00 am

2 stops15h 30m

Porto

mié. 10/21

6:00 am-4:05 pm

1 stop15h 05m

$731

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

sáb. 9/19

7:55 pm-9:45 am

2 stops32h 50m

Porto

mar. 9/29

6:00 am-4:05 pm

1 stop15h 05m

$768

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

dom. 10/25

6:10 am-9:30 am

2 stops23h 20m

Porto

dom. 11/1

6:00 am-2:47 pm

2 stops37h 47m

$781

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

dom. 9/20

4:15 pm-8:00 pm

1 stop22h 45m

Porto

lun. 9/28

4:40 pm-5:40 pm

1 stop30h 00m

$785

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

sáb. 9/19

7:55 pm-9:45 am

2 stops32h 50m

Porto

mar. 9/29

12:15 pm-5:22 pm

2 stops34h 07m

$789

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

dom. 9/20

4:15 pm-8:00 pm

1 stop22h 45m

Porto

lun. 9/28

8:40 pm-3:30 pm

2 stops23h 50m

$793

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

dom. 9/20

4:15 pm-8:00 pm

1 stop22h 45m

Porto

lun. 9/28

8:40 pm-3:30 pm

2 stops23h 50m

$794

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

mié. 10/14

8:30 pm-11:45 am

1 stop10h 15m

Porto

mié. 10/21

8:40 pm-5:50 pm

1 stop26h 10m

$796

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

sáb. 9/19

6:44 pm-6:55 am

2 stops31h 11m

Porto

lun. 9/28

12:10 pm-2:15 pm

2 stops55h 05m

$804

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 59% 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 35m

Direct flights

None
The fastest flight from Philadelphia to Porto takes 10h 35m
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 35m 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
9,672 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,202 reviews
Search Iberia flights
American AirlinesPriceFrom $567Free CancellationRating
7.1
11,675 reviews
Search American Airlines flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,956 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.

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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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