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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
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 - 9:45 am
OPO
-
PHL
26h 30m
2 stops
$776Air Canada
Mon, Oct 5 - Tue, Oct 13
United Airlines Logo
8:00 pm - 7:00 am
PHL
-
OPO
30h 00m
2 stops
United Airlines Logo
2:25 pm - 10:27 am
OPO
-
PHL
25h 02m
2 stops
$782United Airlines
Mon, Oct 5 - Wed, Oct 14
United Airlines Logo
1:00 pm - 9:45 am
PHL
-
OPO
15h 45m
2 stops
United Airlines Logo
12:15 pm - 1:51 pm
OPO
-
PHL
30h 36m
2 stops
$783United Airlines
Mon, Oct 5 - Tue, Oct 13
Air Canada Logo
4:20 pm - 7:00 am
PHL
-
OPO
33h 40m
2 stops
Air Canada Logo
12:15 pm - 9:45 am
OPO
-
PHL
26h 30m
2 stops
$784Air Canada
Sun, Oct 4 - 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
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
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
10:33 am - 9:45 am
PHL
-
OPO
18h 12m
2 stops
United Airlines Logo
6:00 am - 9:59 am
OPO
-
PHL
32h 59m
2 stops
$837United Airlines
Mon, Apr 27 - Fri, May 15
United Airlines Logo
10:33 am - 9:45 am
PHL
-
OPO
18h 12m
2 stops
United Airlines Logo
12:35 pm - 9:54 am
OPO
-
PHL
26h 19m
2 stops
$845United Airlines
Mon, Apr 27 - Thu, May 14

Air Canada flights from Philadelphia to Porto

Our best Air Canada deals on Philadelphia to Porto flight tickets
Air Canada
Sep 20
PHL4:20 pmPhiladelphia
33h 40m
2 stops
OPO7:00 amPorto
Sep 27
OPO12:15 pmPorto
32h 26m
2 stops
PHL3:41 pmPhiladelphia
$883
Air Canada
Jun 30
PHL4:20 pmPhiladelphia
33h 40m
2 stops
OPO7:00 amPorto
Jul 16
OPO11:50 amPorto
27h 14m
2 stops
PHL10:04 amPhiladelphia
$929
Air Canada
Jul 4
PHL4:20 pmPhiladelphia
33h 30m
2 stops
OPO6:50 amPorto
Aug 5
OPO2:25 pmPorto
29h 22m
2 stops
PHL2:47 pmPhiladelphia
$936

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
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
Iberia
May 3
PHL10:05 pmPhiladelphia
32h 40m
2 stops
OPO11:45 amPorto
May 19
OPO8:40 pmPorto
23h 50m
2 stops
PHL3:30 pmPhiladelphia
$892

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 8, 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

Mon 10/5

10:05 am-7:00 am

1 stop15h 55m

Porto

Tue 10/13

12:15 pm-9:45 am

2 stops26h 30m

$776

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 10/5

8:00 pm-7:00 am

2 stops30h 00m

Porto

Wed 10/14

2:25 pm-10:27 am

2 stops25h 02m

$782

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 10/5

1:00 pm-9:45 am

2 stops15h 45m

Porto

Tue 10/13

12:15 pm-1:51 pm

2 stops30h 36m

$783

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 10/4

4:20 pm-7:00 am

2 stops33h 40m

Porto

Tue 10/13

12:15 pm-9:45 am

2 stops26h 30m

$784

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

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

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

Mon 4/27

10:33 am-9:45 am

2 stops18h 12m

Porto

Fri 5/15

6:00 am-9:59 am

2 stops32h 59m

$837

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 4/27

10:33 am-9:45 am

2 stops18h 12m

Porto

Thu 5/14

12:35 pm-9:54 am

2 stops26h 19m

$845

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
9,555 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,173 reviews
Search Iberia flights
American AirlinesPriceFrom $567Free CancellationRating
7.1
11,562 reviews
Search American Airlines flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,899 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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