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Cheap flights from Philadelphia to Porto from $452

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Porto departing on 1/26. 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

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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.
Iberia Logo
7:50 pm - 4:00 pm
PHL
-
OPO
15h 10m2 stops
Iberia Logo
8:40 pm - 3:40 pm
OPO
-
PHL
24h 00m1 stop
$452Iberia
Mon, Jan 26 - Mon, Feb 9
Iberia Logo
7:55 pm - 4:00 pm
PHL
-
OPO
15h 05m1 stop
Iberia Logo
8:40 pm - 3:40 pm
OPO
-
PHL
24h 00m1 stop
$456Iberia
Mon, Jan 26 - Mon, Feb 9
SWISS Logo
1:10 pm - 5:30 pm
PHL
-
OPO
23h 20m2 stops
SWISS Logo
12:05 pm - 9:36 pm
OPO
-
PHL
38h 31m2 stops
$457SWISS
Mon, Jan 26 - Mon, Feb 9
Multiple Airlines Logo
10:25 am - 7:40 am
PHL
-
OPO
16h 15m2 stops
Multiple Airlines Logo
8:40 pm - 3:40 pm
OPO
-
PHL
24h 00m1 stop
$460Multiple Airlines
Wed, Jan 14 - Mon, Jan 19
SWISS Logo
5:00 pm - 6:35 pm
PHL
-
OPO
21h 35m2 stops
SWISS Logo
7:20 pm - 9:23 pm
OPO
-
PHL
31h 03m2 stops
$482SWISS
Mon, Mar 9 - Mon, Mar 30
Multiple Airlines Logo
10:25 am - 7:40 am
PHL
-
OPO
16h 15m2 stops
Multiple Airlines Logo
8:40 pm - 9:05 pm
OPO
-
PHL
29h 25m2 stops
$490Multiple Airlines
Wed, Jan 14 - Mon, Jan 19
Lufthansa Logo
6:40 pm - 11:40 am
PHL
-
OPO
13h 00m1 stop
Lufthansa Logo
6:00 am - 5:05 pm
OPO
-
PHL
15h 05m1 stop
$494Lufthansa
Thu, Mar 12 - Tue, Mar 17
Multiple Airlines Logo
3:30 pm - 12:50 pm
PHL
-
OPO
17h 20m2 stops
Multiple Airlines Logo
4:35 pm - 4:00 pm
OPO
-
PHL
28h 25m1 stop
$501Multiple Airlines
Mon, Mar 9 - Mon, Mar 30
American Airlines Logo
7:55 pm - 8:00 pm
PHL
-
OPO
19h 05m1 stop
American Airlines Logo
8:20 am - 7:27 pm
OPO
-
PHL
16h 07m2 stops
$502American Airlines
Fri, Jan 16 - Fri, Jan 23
SWISS Logo
1:10 pm - 11:15 am
PHL
-
OPO
41h 05m3 stops
SWISS Logo
12:05 pm - 9:36 pm
OPO
-
PHL
38h 31m2 stops
$504SWISS
Mon, Jan 26 - Mon, Feb 9

American Airlines flights from Philadelphia to Porto

Our best American Airlines deals on Philadelphia to Porto flight tickets
American Airlines
Jan 16
PHL7:55 pmPhiladelphia
19h 05m
1 stop
OPO8:00 pmPorto
Jan 23
OPO8:20 amPorto
16h 07m
2 stops
PHL7:27 pmPhiladelphia
$502
Find similar
American Airlines
Apr 19
PHL11:50 amPhiladelphia
14h 50m
2 stops
OPO7:40 amPorto
Apr 30
OPO8:20 amPorto
16h 15m
2 stops
PHL7:35 pmPhiladelphia
$520
Find similar

British Airways flights from Philadelphia to Porto

Our best British Airways deals on Philadelphia to Porto flight tickets
British Airways
Mar 20
PHL8:45 pmPhiladelphia
18h 15m
1 stop
OPO7:00 pmPorto
Mar 30
OPO9:10 pmPorto
23h 20m
1 stop
PHL3:30 pmPhiladelphia
$530
Find similar
British Airways
May 3
PHL4:20 pmPhiladelphia
23h 00m
2 stops
OPO8:20 pmPorto
May 10
OPO9:25 pmPorto
24h 15m
1 stop
PHL4:40 pmPhiladelphia
$596
Find similar

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 December 4, 2025.
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

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 1/26

7:50 pm-4:00 pm

2 stops15h 10m

Porto

Mon 2/9

8:40 pm-3:40 pm

1 stop24h 00m

$452

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 1/26

7:55 pm-4:00 pm

1 stop15h 05m

Porto

Mon 2/9

8:40 pm-3:40 pm

1 stop24h 00m

$456

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 1/26

1:10 pm-5:30 pm

2 stops23h 20m

Porto

Mon 2/9

12:05 pm-9:36 pm

2 stops38h 31m

$457

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 1/14

10:25 am-7:40 am

2 stops16h 15m

Porto

Mon 1/19

8:40 pm-3:40 pm

1 stop24h 00m

$460

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

5:00 pm-6:35 pm

2 stops21h 35m

Porto

Mon 3/30

7:20 pm-9:23 pm

2 stops31h 03m

$482

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 1/14

10:25 am-7:40 am

2 stops16h 15m

Porto

Mon 1/19

8:40 pm-9:05 pm

2 stops29h 25m

$490

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Thu 3/12

6:40 pm-11:40 am

1 stop13h 00m

Porto

Tue 3/17

6:00 am-5:05 pm

1 stop15h 05m

$494

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

3:30 pm-12:50 pm

2 stops17h 20m

Porto

Mon 3/30

4:35 pm-4:00 pm

1 stop28h 25m

$501

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Fri 1/16

7:55 pm-8:00 pm

1 stop19h 05m

Porto

Fri 1/23

8:20 am-7:27 pm

2 stops16h 07m

$502

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 1/26

1:10 pm-11:15 am

3 stops41h 05m

Porto

Mon 2/9

12:05 pm-9:36 pm

2 stops38h 31m

$504

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 cheapest month to fly to Porto?

The month of November is, on average, the cheapest month to fly to Porto from Philadelphia, with most prices found around $666. If you aren’t able to travel during the month of November, then book flights to Porto from Philadelphia during March instead. Flights to Porto in March, while not as cheap as those in November, still average around $674.

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Sunday when prices can be found for as low as $814. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $1,097. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the evening is the cheapest time of day to fly from Philadelphia to Porto when you can find flight prices for as low as $829. Flying to Porto in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $951 on average. Flights to Porto from Philadelphia in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Porto?

You are more likely to see cheaper flights to Porto from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $820 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Philadelphia for as low as $653 on momondo.

Can stopping save me money on Philadelphia to Porto flights?

You could potentially save up to 14% 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 51m

Direct flights

None
The fastest flight from Philadelphia to Porto takes 12h 51m
There are no direct flights from Philadelphia to Porto. There are no popular flight routes from Philadelphia to Porto.
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  • How far is Philadelphia to Porto by plane?

    A flight from Philadelphia to Porto will travel around 3401.6 mi. 10h 15m 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 $563Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
American AirlinesPriceFrom $567Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
LufthansaPriceFrom $576Free CancellationRating
6.8
7,612 reviews
Search Lufthansa flights
IberiaPriceFrom $593Free CancellationRating
7.0
3,040 reviews
Search Iberia flights
Air CanadaPriceFrom $673Free CancellationRating
7.1
10,500 reviews
Search Air Canada 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
Guimarães
Lamego
Esposende
Chaves
Viseu
Espinho
Ponte de Lima
Arcos de Valdevez
Pinhao
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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