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Cheap flights from Philadelphia to Porto from $368

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 10/24. 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

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.
Multiple Airlines Logo
3:20 pm - 12:50 pmPHL  Philadelphia-OPO Porto
16h 30m2 stops Montreal Pierre Elliott Trudeau Intl Munich Franz Josef Strauss
Multiple Airlines Logo
6:00 am - 4:05 pmOPO  Porto-PHL Philadelphia
15h 05m1 stop Frankfurt am Main
$729Multiple Airlines
Wed, Nov 4 - Sun, Nov 8
Multiple Airlines Logo
3:20 pm - 12:00 pmPHL  Philadelphia-OPO Porto
15h 40m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National
Multiple Airlines Logo
6:00 am - 4:05 pmOPO  Porto-PHL Philadelphia
15h 05m1 stop Frankfurt am Main
$730Multiple Airlines
Wed, Nov 4 - Sun, Nov 8
Multiple Airlines Logo
3:20 pm - 12:05 pmPHL  Philadelphia-OPO Porto
15h 45m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National
Multiple Airlines Logo
6:00 am - 4:05 pmOPO  Porto-PHL Philadelphia
15h 05m1 stop Frankfurt am Main
$730Multiple Airlines
Mon, Nov 2 - Sun, Nov 8
United Airlines Logo
6:46 pm - 9:30 amPHL  Philadelphia-OPO Porto
33h 44m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
6:00 am - 2:17 pmOPO  Porto-PHL Philadelphia
37h 17m2 stops Frankfurt am Main Chicago O'Hare Intl
$766United Airlines
Mon, Nov 2 - Sun, Nov 8
United Airlines Logo
7:40 pm - 9:45 amPHL  Philadelphia-OPO Porto
33h 05m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
6:00 am - 4:05 pmOPO  Porto-PHL Philadelphia
15h 05m1 stop Frankfurt am Main
$767United Airlines
Sat, Sep 19 - Tue, Sep 29
United Airlines Logo
7:40 pm - 9:45 amPHL  Philadelphia-OPO Porto
33h 05m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
12:15 pm - 12:25 pmOPO  Porto-PHL Philadelphia
29h 10m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
$788United Airlines
Sat, Sep 19 - Tue, Sep 29
Iberia Logo
7:50 pm - 8:00 pmPHL  Philadelphia-OPO Porto
19h 10m1 stop Madrid Barajas
Iberia Logo
4:40 pm - 7:12 pmOPO  Porto-PHL Philadelphia
31h 32m2 stops Madrid Barajas Boston Logan Intl
$790Iberia
Mon, Feb 1 - Sun, Feb 7
Iberia Logo
9:02 pm - 11:45 amPHL  Philadelphia-OPO Porto
34h 43m2 stops Chicago O'Hare Intl Madrid Barajas
Iberia Logo
8:40 pm - 4:20 pmOPO  Porto-PHL Philadelphia
24h 40m1 stop Madrid Barajas
$797Iberia
Sat, Oct 31 - Sat, Nov 7
American Airlines Logo
8:35 am - 7:40 amPHL  Philadelphia-OPO Porto
18h 05m2 stops Boston Logan Intl Madrid Barajas
American Airlines Logo
8:40 pm - 3:50 pmOPO  Porto-PHL Philadelphia
24h 10m1 stop Madrid Barajas
$1,729American Airlines
Sat, Dec 26 - Fri, Jan 1
American Airlines Logo
12:35 pm - 7:40 amPHL  Philadelphia-OPO Porto
14h 05m2 stops Boston Logan Intl Madrid Barajas
American Airlines Logo
8:20 am - 8:10 pmOPO  Porto-PHL Philadelphia
16h 50m2 stops Madrid Barajas Chicago O'Hare Intl
$2,083American Airlines
Sat, Dec 26 - Fri, Jan 1

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Air Canada flights from Philadelphia to Porto

Our best Air Canada deals on Philadelphia to Porto flight tickets
Air Canada
Sep 23
PHL10:05 amPhiladelphia
27h 25m
2 stops
OPO6:30 pmPorto
Sep 29
OPO6:00 amPorto
37h 47m
2 stops
PHL2:47 pmPhiladelphia
$768
Air Canada
Sep 24
PHL4:20 pmPhiladelphia
33h 50m
2 stops
OPO7:10 amPorto
Sep 29
OPO6:00 amPorto
37h 47m
2 stops
PHL2:47 pmPhiladelphia
$827
Air Canada
Aug 11
PHL6:25 amPhiladelphia
19h 35m
2 stops
OPO7:00 amPorto
Aug 18
OPO12:15 pmPorto
31h 25m
2 stops
PHL2:40 pmPhiladelphia
$852

SWISS flights from Philadelphia to Porto

Our best SWISS deals on Philadelphia to Porto flight tickets
SWISS
Sep 27
PHL11:20 amPhiladelphia
39h 35m
2 stops
OPO7:55 amPorto
Oct 5
OPO7:20 pmPorto
27h 34m
2 stops
PHL5:54 pmPhiladelphia
$782
SWISS
Oct 25
PHL6:40 pmPhiladelphia
19h 50m
2 stops
OPO6:30 pmPorto
Nov 1
OPO7:20 pmPorto
49h 45m
2 stops
PHL4:05 pmPhiladelphia
$792
SWISS
Nov 1
PHL5:40 pmPhiladelphia
19h 50m
2 stops
OPO6:30 pmPorto
Nov 7
OPO12:05 pmPorto
33h 00m
2 stops
PHL4:05 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 August 5, 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 Philadelphia - OPO Porto

PHLOPO

Philadelphia

Wed 11/4

3:20 pm-12:50 pm

2 stops16h 30m

Porto

Sun 11/8

6:00 am-4:05 pm

1 stop15h 05m

$729
Quickest round-trip

PhiladelphiaPorto

PHL Philadelphia - OPO Porto

PHLOPO

Philadelphia

Wed 11/4

3:20 pm-12:00 pm

2 stops15h 40m

Porto

Sun 11/8

6:00 am-4:05 pm

1 stop15h 05m

$730

PhiladelphiaPorto

PHL Philadelphia - OPO Porto

PHLOPO

Philadelphia

Mon 11/2

3:20 pm-12:05 pm

2 stops15h 45m

Porto

Sun 11/8

6:00 am-4:05 pm

1 stop15h 05m

$730

PhiladelphiaPorto

PHL Philadelphia - OPO Porto

PHLOPO

Philadelphia

Mon 11/2

6:46 pm-9:30 am

2 stops33h 44m

Porto

Sun 11/8

6:00 am-2:17 pm

2 stops37h 17m

$766

PhiladelphiaPorto

PHL Philadelphia - OPO Porto

PHLOPO

Philadelphia

Sat 9/19

7:40 pm-9:45 am

2 stops33h 05m

Porto

Tue 9/29

6:00 am-4:05 pm

1 stop15h 05m

$767

PhiladelphiaPorto

PHL Philadelphia - OPO Porto

PHLOPO

Philadelphia

Sat 9/19

7:40 pm-9:45 am

2 stops33h 05m

Porto

Tue 9/29

12:15 pm-12:25 pm

2 stops29h 10m

$788

PhiladelphiaPorto

PHL Philadelphia - OPO Porto

PHLOPO

Philadelphia

Mon 2/1

7:50 pm-8:00 pm

1 stop19h 10m

Porto

Sun 2/7

4:40 pm-7:12 pm

2 stops31h 32m

$790

PhiladelphiaPorto

PHL Philadelphia - OPO Porto

PHLOPO

Philadelphia

Sat 10/31

9:02 pm-11:45 am

2 stops34h 43m

Porto

Sat 11/7

8:40 pm-4:20 pm

1 stop24h 40m

$797

PhiladelphiaPorto

PHL Philadelphia - OPO Porto

PHLOPO

Philadelphia

Sat 12/26

8:35 am-7:40 am

2 stops18h 05m

Porto

Fri 1/1

8:40 pm-3:50 pm

1 stop24h 10m

$1,729

PhiladelphiaPorto

PHL Philadelphia - OPO Porto

PHLOPO

Philadelphia

Sat 12/26

12:35 pm-7:40 am

2 stops14h 05m

Porto

Fri 1/1

8:20 am-8:10 pm

2 stops16h 50m

$2,083

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?

Prices are currently low for flights on this route.

Typical prices usually range from $789 to $925.
The lowest price recently found on this route was $730.

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 $563.

Can stopping save me money on Philadelphia to Porto flights?

You could potentially save up to 15% 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

13h 05m

Direct flights

None
The fastest flight from Philadelphia to Porto takes 13h 05m
There are no direct flights from Philadelphia to Porto. There are no popular flight routes from Philadelphia to Porto.
Search flight deals

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. 13h 05m 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
10,058 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,267 reviews
Search Iberia flights
American AirlinesPriceFrom $695Free CancellationRating
7.1
11,850 reviews
Search American Airlines 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
Pinhao
Esposende
Lamego
Chaves
Arcos de Valdevez
Guimarães
Viseu
Espinho
Ponte de Lima
Mesao Frio
Penafiel
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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