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Cheap flights from Philadelphia to Porto from $238

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 4/29. 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.
United Airlines Logo
1:27 pm - 9:45 am
PHL
-
OPO
15h 18m
2 stops
United Airlines Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$482United Airlines
lun., abr. 20 - mié., abr. 29
Multiple Airlines Logo
3:30 pm - 12:50 pm
PHL
-
OPO
17h 20m
2 stops
Multiple Airlines Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$484Multiple Airlines
lun., mar. 23 - mar., mar. 31
Multiple Airlines Logo
3:30 pm - 12:05 pm
PHL
-
OPO
16h 35m
2 stops
Multiple Airlines Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$485Multiple Airlines
mar., mar. 24 - mar., mar. 31
United Airlines Logo
7:45 pm - 9:45 am
PHL
-
OPO
33h 00m
2 stops
United Airlines Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$488United Airlines
sáb., abr. 18 - mar., abr. 28
United Airlines Logo
12:15 pm - 9:30 am
PHL
-
OPO
17h 15m
2 stops
United Airlines Logo
6:00 am - 2:11 pm
OPO
-
PHL
37h 11m
2 stops
$492United Airlines
lun., mar. 23 - mar., mar. 31
Multiple Airlines Logo
12:16 pm - 10:30 am
PHL
-
OPO
17h 14m
2 stops
Multiple Airlines Logo
5:00 am - 4:32 pm
OPO
-
PHL
16h 32m
2 stops
$494Multiple Airlines
mié., feb. 18 - mié., feb. 25
United Airlines Logo
10:00 am - 11:10 am
PHL
-
OPO
20h 10m
2 stops
United Airlines Logo
6:00 am - 4:05 pm
OPO
-
PHL
15h 05m
1 stop
$498United Airlines
mar., abr. 14 - vie., abr. 24
Multiple Airlines Logo
7:35 am - 11:10 am
PHL
-
OPO
46h 35m
2 stops
Multiple Airlines Logo
6:00 am - 3:26 pm
OPO
-
PHL
38h 26m
2 stops
$499Multiple Airlines
mié., feb. 18 - mié., feb. 25
Multiple Airlines Logo
10:20 pm - 7:30 pm
PHL
-
OPO
16h 10m
1 stop
Multiple Airlines Logo
8:40 pm - 5:40 pm
OPO
-
PHL
26h 00m
1 stop
$502Multiple Airlines
mar., abr. 21 - mar., abr. 28
Multiple Airlines Logo
3:30 pm - 12:50 pm
PHL
-
OPO
17h 20m
2 stops
Multiple Airlines Logo
4:35 pm - 4:05 pm
OPO
-
PHL
28h 30m
1 stop
$504Multiple Airlines
lun., mar. 9 - lun., mar. 30

SWISS flights from Philadelphia to Porto

Our best SWISS deals on Philadelphia to Porto flight tickets
SWISS
Apr 14
PHL11:36 amPhiladelphia
39h 19m
2 stops
OPO7:55 amPorto
Apr 24
OPO8:40 amPorto
37h 52m
2 stops
PHL5:32 pmPhiladelphia
$520
SWISS
Apr 22
PHL11:36 amPhiladelphia
39h 19m
2 stops
OPO7:55 amPorto
May 8
OPO8:40 amPorto
37h 52m
2 stops
PHL5:32 pmPhiladelphia
$584
SWISS
Feb 2
PHL1:10 pmPhiladelphia
41h 05m
2 stops
OPO11:15 amPorto
Feb 18
OPO12:10 pmPorto
37h 59m
3 stops
PHL9:09 pmPhiladelphia
$1,028

United Airlines flights from Philadelphia to Porto

Our best United Airlines deals on Philadelphia to Porto flight tickets
United Airlines
Apr 20
PHL1:27 pmPhiladelphia
15h 18m
2 stops
OPO9:45 amPorto
Apr 28
OPO6:00 amPorto
15h 05m
1 stop
PHL4:05 pmPhiladelphia
$482
United Airlines
Apr 18
PHL7:45 pmPhiladelphia
33h 00m
2 stops
OPO9:45 amPorto
Apr 28
OPO6:00 amPorto
15h 05m
1 stop
PHL4:05 pmPhiladelphia
$488
United Airlines
Mar 23
PHL9:55 amPhiladelphia
19h 35m
2 stops
OPO9:30 amPorto
Apr 1
OPO6:00 amPorto
23h 45m
2 stops
PHL12:45 amPhiladelphia
$492

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 enero 29, 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

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

lun. 4/20

1:27 pm-9:45 am

2 stops15h 18m

Porto

mié. 4/29

6:00 am-4:05 pm

1 stop15h 05m

$482

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

lun. 3/23

3:30 pm-12:50 pm

2 stops17h 20m

Porto

mar. 3/31

6:00 am-4:05 pm

1 stop15h 05m

$484

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

mar. 3/24

3:30 pm-12:05 pm

2 stops16h 35m

Porto

mar. 3/31

6:00 am-4:05 pm

1 stop15h 05m

$485

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

sáb. 4/18

7:45 pm-9:45 am

2 stops33h 00m

Porto

mar. 4/28

6:00 am-4:05 pm

1 stop15h 05m

$488

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

lun. 3/23

12:15 pm-9:30 am

2 stops17h 15m

Porto

mar. 3/31

6:00 am-2:11 pm

2 stops37h 11m

$492

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

mié. 2/18

12:16 pm-10:30 am

2 stops17h 14m

Porto

mié. 2/25

5:00 am-4:32 pm

2 stops16h 32m

$494

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

mar. 4/14

10:00 am-11:10 am

2 stops20h 10m

Porto

vie. 4/24

6:00 am-4:05 pm

1 stop15h 05m

$498

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

mié. 2/18

7:35 am-11:10 am

2 stops46h 35m

Porto

mié. 2/25

6:00 am-3:26 pm

2 stops38h 26m

$499

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

mar. 4/21

10:20 pm-7:30 pm

1 stop16h 10m

Porto

mar. 4/28

8:40 pm-5:40 pm

1 stop26h 00m

$502

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

lun. 3/9

3:30 pm-12:50 pm

2 stops17h 20m

Porto

lun. 3/30

4:35 pm-4:05 pm

1 stop28h 30m

$504

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 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 $616. 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 $636.

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 $784 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 $640 on momondo.

Can stopping save me money on Philadelphia to Porto flights?

You could potentially save up to 17% 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

14h 36m

Direct flights

None
The fastest flight from Philadelphia to Porto takes 14h 36m
There are no direct flights from Philadelphia to Porto. There are no popular flight routes from Philadelphia to Porto.
Search flight deals

  • How far is Philadelphia to Porto by plane?

    A flight from Philadelphia to Porto will travel around 3401.6 mi. 14h 36m 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
9,215 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,100 reviews
Search Iberia flights
American AirlinesPriceFrom $567Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights
LufthansaPriceFrom $576Free CancellationRating
6.8
7,756 reviews
Search Lufthansa flights
British AirwaysPriceFrom $616Free CancellationRating
6.7
7,705 reviews
Search British Airways 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
Guimarães
Espinho
Chaves
Pinhao
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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