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Cheap flights from Philadelphia to Portugal from $276

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 Portugal departing on 3/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Philadelphia to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
$469Multiple Airlines
Tue, Mar 24 - Tue, 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
$474Multiple Airlines
Tue, Mar 24 - Tue, Mar 31
Lufthansa Logo
4:35 pm - 12:50 pm
PHL
-
OPO
16h 15m
2 stops
Lufthansa Logo
6:00 am - 5:05 pm
OPO
-
PHL
15h 05m
1 stop
$489Lufthansa
Mon, Mar 16 - Thu, Mar 26
United Airlines Logo
8:00 am - 9:30 am
PHL
-
OPO
21h 30m
2 stops
United Airlines Logo
6:00 am - 2:17 pm
OPO
-
PHL
36h 17m
2 stops
$492United Airlines
Tue, Mar 17 - Tue, Mar 24
Multiple Airlines Logo
12:16 pm - 10:30 am
PHL
-
OPO
17h 14m
2 stops
Multiple Airlines Logo
5:00 am - 5:56 pm
OPO
-
PHL
17h 56m
2 stops
$494Multiple Airlines
Wed, Feb 18 - Wed, Feb 25
Iberia Logo
8:15 pm - 8:00 pm
PHL
-
OPO
18h 45m
1 stop
Iberia Logo
8:40 pm - 5:35 pm
OPO
-
PHL
25h 55m
1 stop
$497Iberia
Tue, Apr 7 - Mon, Apr 13
United Airlines Logo
9:55 am - 11:40 am
PHL
-
OPO
21h 45m
2 stops
United Airlines Logo
6:00 am - 5:05 pm
OPO
-
PHL
15h 05m
1 stop
$498United Airlines
Wed, Mar 18 - Thu, Mar 26
American Airlines Logo
10:54 am - 7:40 am
PHL
-
OPO
15h 46m
2 stops
American Airlines Logo
8:40 pm - 3:25 pm
OPO
-
PHL
23h 45m
1 stop
$499American Airlines
Wed, Feb 18 - Wed, Feb 25
British Airways Logo
6:45 pm - 3:40 pm
PHL
-
LIS
15h 55m
1 stop
British Airways Logo
11:05 am - 1:50 pm
LIS
-
PHL
7h 45mnonstop
$665British Airways
Wed, Apr 29 - Fri, May 8
British Airways Logo
6:45 pm - 11:15 pm
PHL
-
LIS
23h 30m
1 stop
British Airways Logo
7:20 am - 4:40 pm
LIS
-
PHL
14h 20m
1 stop
$685British Airways
Wed, Apr 22 - Wed, Apr 29

TAP AIR PORTUGAL flights from Philadelphia to Portugal

Our best TAP AIR PORTUGAL deals on Philadelphia to Portugal flight tickets
TAP AIR PORTUGAL
Apr 29
PHL6:00 amPhiladelphia
18h 40m
1 stop
LIS5:40 amLisbon Humberto Delgado
May 8
LIS12:00 pmLisbon Humberto Delgado
14h 40m
1 stop
PHL9:40 pmPhiladelphia
$701
TAP AIR PORTUGAL
May 5
PHL8:25 amPhiladelphia
16h 15m
1 stop
LIS5:40 amLisbon Humberto Delgado
May 11
LIS5:40 pmLisbon Humberto Delgado
18h 55m
1 stop
PHL7:35 amPhiladelphia
$721
TAP AIR PORTUGAL
Mar 9
PHL3:02 pmPhiladelphia
10h 33m
1 stop
LIS5:35 amLisbon Humberto Delgado
Mar 18
LIS11:40 amLisbon Humberto Delgado
11h 44m
1 stop
PHL7:24 pmPhiladelphia
$735

American Airlines flights from Philadelphia to Portugal

Our best American Airlines deals on Philadelphia to Portugal flight tickets
American Airlines
Feb 18
PHL10:54 amPhiladelphia
15h 46m
2 stops
OPO7:40 amPorto
Feb 25
OPO8:40 pmPorto
23h 45m
1 stop
PHL3:25 pmPhiladelphia
$499
American Airlines
Feb 18
PHL12:22 pmPhiladelphia
14h 18m
2 stops
OPO7:40 amPorto
Feb 25
OPO8:40 pmPorto
23h 45m
1 stop
PHL3:25 pmPhiladelphia
$595
American Airlines
Apr 14
PHL11:50 amPhiladelphia
14h 50m
2 stops
OPO7:40 amPorto
May 15
OPO8:20 amPorto
17h 20m
2 stops
PHL8:40 pmPhiladelphia
$597

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Portugal 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 February 8, 2026.
Use the filters below to find and compare flights from Philadelphia to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/24

3:30 pm-12:05 pm

2 stops16h 35m

Porto

Tue 3/31

6:00 am-4:05 pm

1 stop15h 05m

$469

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/24

3:30 pm-12:05 pm

2 stops16h 35m

Porto

Tue 3/31

6:00 am-4:05 pm

1 stop15h 05m

$474

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/16

4:35 pm-12:50 pm

2 stops16h 15m

Porto

Thu 3/26

6:00 am-5:05 pm

1 stop15h 05m

$489

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 3/17

8:00 am-9:30 am

2 stops21h 30m

Porto

Tue 3/24

6:00 am-2:17 pm

2 stops36h 17m

$492

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 2/18

12:16 pm-10:30 am

2 stops17h 14m

Porto

Wed 2/25

5:00 am-5:56 pm

2 stops17h 56m

$494

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/7

8:15 pm-8:00 pm

1 stop18h 45m

Porto

Mon 4/13

8:40 pm-5:35 pm

1 stop25h 55m

$497

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 3/18

9:55 am-11:40 am

2 stops21h 45m

Porto

Thu 3/26

6:00 am-5:05 pm

1 stop15h 05m

$498

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 2/18

10:54 am-7:40 am

2 stops15h 46m

Porto

Wed 2/25

8:40 pm-3:25 pm

1 stop23h 45m

$499

PhiladelphiaLisbon

PHL - LIS

PHLLIS

Philadelphia

Wed 4/29

6:45 pm-3:40 pm

1 stop15h 55m

Lisbon Humberto Delgado

Fri 5/8

11:05 am-1:50 pm

Nonstop7h 45m

$665

PhiladelphiaLisbon

PHL - LIS

PHLLIS

Philadelphia

Wed 4/22

6:45 pm-11:15 pm

1 stop23h 30m

Lisbon Humberto Delgado

Wed 4/29

7:20 am-4:40 pm

1 stop14h 20m

$685

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 Portugal from

How to get the cheapest flight ticket from Philadelphia to Portugal

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 Portugal?

The cheapest month to fly to Portugal from Philadelphia is in November. Flight prices, which tend to average around $704, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Portugal from Philadelphia during February instead. Flights to Portugal in February, while not as cheap as those in November, still average around $740.

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

According to our data, Tuesday is the cheapest day to fly to Portugal from Philadelphia. The lowest ticket price found for a Tuesday departure recently was $937. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $1,150.

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

Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from Philadelphia to Portugal during this time can be as low as $1,008. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,415 per ticket.

What is the cheapest Philadelphia to Portugal flight route?

Fly from Philadelphia to Lisbon Humberto Delgado for the best Philadelphia - Portugal flight prices

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

You are more likely to see cheaper flights to Portugal from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $981 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Philadelphia for as low as $816 on momondo.

What cabin class options are available on Philadelphia to Portugal flights?

There are 3 cabin classes available to choose from on Philadelphia to Portugal flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to Portugal flights?

You could potentially save up to 45% on your flight if you consider stops on a Philadelphia to Portugal flight.

Cheap Philadelphia to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Portugal

Best Price Found

$526

Fastest flight time

6h 40m

Direct flights

Every day

Airports in Portugal

99 airports
The best one-way flight to Portugal from Philadelphia in the past 72 hours is $526. The best round-trip flight deal from Philadelphia to Portugal found on momondo in the last 72 hours is $914.
The fastest flight from Philadelphia to Portugal takes 6h 40m
Direct flights go from Philadelphia to Portugal every day.
There are 99 airports in Portugal. From Philadelphia there are direct flights to Lisbon Humberto Delgado (LIS).
Search flight deals

  • When did momondo last update prices for flights from Philadelphia Airport to Portugal?

    Prices for flights from Philadelphia Airport to Portugal are updated daily.

  • How many operators does momondo search for flights from Philadelphia Airport to Portugal?

  • How old do you have to be to fly from Philadelphia Airport to Portugal?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Philadelphia Airport to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The travel and health documents you'll need for your trip to Portugal may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Philadelphia to Portugal?

Best airlines flying from Philadelphia to Portugal

Compare and see reviews for airlines that fly from Philadelphia to Portugal with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $489Free CancellationRating
7.4
9,257 reviews
Search United Airlines flights
IberiaPriceFrom $546Free CancellationRating
7.0
3,109 reviews
Search Iberia flights
American AirlinesPriceFrom $567Free CancellationRating
7.2
11,254 reviews
Search American Airlines flights
LufthansaPriceFrom $576Free CancellationRating
6.8
7,775 reviews
Search Lufthansa flights
British AirwaysPriceFrom $578Free CancellationRating
6.7
7,723 reviews
Search British Airways flights
Aer LingusPriceFrom $639Free CancellationRating
7.2
1,447 reviews
Search Aer Lingus flights
FinnairPriceFrom $646Free CancellationRating
7.6
1,357 reviews
Search Finnair flights
TAP AIR PORTUGALPriceFrom $666Free CancellationRating
7.1
2,135 reviews
Search TAP AIR PORTUGAL flights

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Portugal?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portugal from Philadelphia.

Can I find flights from Philadelphia to Portugal with flexible booking policies on momondo?

All flight searches from Philadelphia to Portugal on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Philadelphia to Portugal?

momondo helps you find the best flight between Philadelphia and Portugal by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Philadelphia to Portugal right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Portugal from Philadelphia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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