Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Philadelphia to Porto from $280

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 3/25. 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.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Philadelphia to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
7:45 pm - 11:45 am
PHL
-
OPO
11h 00m
1 stop
Iberia Logo
9:55 pm - 3:05 pm
OPO
-
PHL
22h 10m
1 stop
$443Iberia
Wed, Feb 18 - Wed, Feb 25
Iberia Logo
8:30 pm - 8:00 pm
PHL
-
OPO
18h 30m
1 stop
Iberia Logo
8:20 am - 5:40 pm
OPO
-
PHL
14h 20m
1 stop
$446Iberia
Sun, Apr 19 - Thu, Apr 30
Multiple Airlines Logo
7:45 pm - 11:45 am
PHL
-
OPO
11h 00m
1 stop
Multiple Airlines Logo
8:40 pm - 3:25 pm
OPO
-
PHL
23h 45m
1 stop
$456Multiple Airlines
Wed, Feb 18 - Wed, Feb 25
Multiple Airlines Logo
7:45 pm - 8:00 pm
PHL
-
OPO
19h 15m
1 stop
Multiple Airlines Logo
8:20 am - 3:25 pm
OPO
-
PHL
12h 05m
1 stop
$463Multiple Airlines
Wed, Feb 18 - Wed, Feb 25
Multiple Airlines Logo
7:45 pm - 8:00 pm
PHL
-
OPO
19h 15m
1 stop
Multiple Airlines Logo
8:40 pm - 8:34 pm
OPO
-
PHL
28h 54m
2 stops
$473Multiple Airlines
Wed, Feb 18 - Wed, Feb 25
British Airways Logo
7:20 pm - 5:35 pm
PHL
-
OPO
18h 15m
2 stops
British Airways Logo
9:10 pm - 3:25 pm
OPO
-
PHL
23h 15m
2 stops
$474British Airways
Mon, Mar 9 - Mon, Mar 30
British Airways Logo
7:20 pm - 5:35 pm
PHL
-
OPO
18h 15m
2 stops
British Airways Logo
9:10 pm - 3:25 pm
OPO
-
PHL
23h 15m
2 stops
$475British Airways
Mon, Mar 9 - Mon, Mar 30
Iberia Logo
8:30 pm - 11:45 am
PHL
-
OPO
10h 15m
1 stop
Iberia Logo
8:20 am - 5:30 pm
OPO
-
PHL
14h 10m
1 stop
$476Iberia
Wed, Apr 29 - Thu, May 14
Multiple Airlines Logo
3:30 pm - 12:05 pm
PHL
-
OPO
16h 35m
2 stops
Multiple Airlines Logo
6:00 am - 4:00 pm
OPO
-
PHL
15h 00m
1 stop
$478Multiple Airlines
Tue, Mar 24 - Tue, Mar 31
Multiple Airlines Logo
6:00 am - 10:10 am
PHL
-
OPO
23h 10m
1 stop
Multiple Airlines Logo
11:00 am - 8:00 am
OPO
-
PHL
26h 00m
2 stops
$482Multiple Airlines
Mon, Mar 30 - Mon, Apr 6

Lufthansa flights from Philadelphia to Porto

Our best Lufthansa deals on Philadelphia to Porto flight tickets
Lufthansa
Mar 24
PHL6:40 pmPhiladelphia
13h 00m
1 stop
OPO11:40 amPorto
Mar 31
OPO6:00 amPorto
15h 00m
1 stop
PHL4:00 pmPhiladelphia
$490
Lufthansa
Mar 24
PHL6:40 pmPhiladelphia
13h 00m
1 stop
OPO11:40 amPorto
Apr 1
OPO4:35 pmPorto
28h 25m
1 stop
PHL4:00 pmPhiladelphia
$510
Lufthansa
Apr 19
PHL5:35 pmPhiladelphia
24h 50m
2 stops
OPO11:25 pmPorto
Apr 30
OPO6:00 amPorto
15h 00m
1 stop
PHL4:00 pmPhiladelphia
$541

United Airlines flights from Philadelphia to Porto

Our best United Airlines deals on Philadelphia to Porto flight tickets
United Airlines
Mar 24
PHL9:55 amPhiladelphia
19h 35m
2 stops
OPO9:30 amPorto
Apr 1
OPO6:00 amPorto
37h 10m
2 stops
PHL2:10 pmPhiladelphia
$491
United Airlines
Apr 19
PHL4:25 pmPhiladelphia
42h 15m
2 stops
OPO3:40 pmPorto
Apr 30
OPO6:00 amPorto
15h 00m
1 stop
PHL4:00 pmPhiladelphia
$500
United Airlines
Apr 20
PHL1:27 pmPhiladelphia
15h 18m
2 stops
OPO9:45 amPorto
Apr 24
OPO6:00 amPorto
15h 00m
1 stop
PHL4:00 pmPhiladelphia
$555

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 January 19, 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

Wed 2/18

7:45 pm-11:45 am

1 stop11h 00m

Porto

Wed 2/25

9:55 pm-3:05 pm

1 stop22h 10m

$443

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 4/19

8:30 pm-8:00 pm

1 stop18h 30m

Porto

Thu 4/30

8:20 am-5:40 pm

1 stop14h 20m

$446

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 2/18

7:45 pm-11:45 am

1 stop11h 00m

Porto

Wed 2/25

8:40 pm-3:25 pm

1 stop23h 45m

$456

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 2/18

7:45 pm-8:00 pm

1 stop19h 15m

Porto

Wed 2/25

8:20 am-3:25 pm

1 stop12h 05m

$463

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 2/18

7:45 pm-8:00 pm

1 stop19h 15m

Porto

Wed 2/25

8:40 pm-8:34 pm

2 stops28h 54m

$473

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

7:20 pm-5:35 pm

2 stops18h 15m

Porto

Mon 3/30

9:10 pm-3:25 pm

2 stops23h 15m

$474

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/9

7:20 pm-5:35 pm

2 stops18h 15m

Porto

Mon 3/30

9:10 pm-3:25 pm

2 stops23h 15m

$475

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 4/29

8:30 pm-11:45 am

1 stop10h 15m

Porto

Thu 5/14

8:20 am-5:30 pm

1 stop14h 10m

$476

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/24

3:30 pm-12:05 pm

2 stops16h 35m

Porto

Tue 3/31

6:00 am-4:00 pm

1 stop15h 00m

$478

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/30

6:00 am-10:10 am

1 stop23h 10m

Porto

Mon 4/6

11:00 am-8:00 am

2 stops26h 00m

$482

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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

12h 35m

Direct flights

None
The fastest flight from Philadelphia to Porto takes 12h 35m
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. 12h 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
9,176 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,091 reviews
Search Iberia flights
American AirlinesPriceFrom $567Free CancellationRating
7.2
11,159 reviews
Search American Airlines flights
LufthansaPriceFrom $576Free CancellationRating
6.8
7,731 reviews
Search Lufthansa flights
British AirwaysPriceFrom $616Free CancellationRating
6.7
7,689 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
Matosinhos
Aveiro
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.

An easier way to manage your Porto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 2/18
Wed 2/25
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal