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Cheap flights from Philadelphia to San Sebastian from $527

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 San Sebastian departing on 1/14. 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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Cheap round-trip flights

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American Airlines Logo
7:55 pm - 1:00 pmPHL-EAS
11h 05m1 stop
American Airlines Logo
1:40 pm - 7:46 amEAS-PHL
24h 06m2 stops
$527American Airlines
Find Deal
mié., ene. 14 - mié., ene. 21
American Airlines Logo
7:55 pm - 1:00 pmPHL-EAS
11h 05m1 stop
American Airlines Logo
9:30 pm - 3:40 pmEAS-PHL
24h 10m1 stop
$528American Airlines
Find Deal
mié., ene. 14 - mié., ene. 21
American Airlines Logo
10:25 am - 8:40 amPHL-EAS
16h 15m2 stops
American Airlines Logo
1:40 pm - 8:43 amEAS-PHL
25h 03m2 stops
$532American Airlines
Find Deal
mié., ene. 14 - mié., ene. 21
Multiple Airlines Logo
3:30 pm - 1:30 pmPHL-EAS
16h 00m2 stops
Multiple Airlines Logo
2:05 pm - 2:47 pmEAS-PHL
30h 42m3 stops
$764Multiple Airlines
Find Deal
mié., ene. 14 - mié., ene. 21
American Airlines Logo
8:00 pm - 8:50 pmPHL-EAS
18h 50m1 stop
American Airlines Logo
9:20 am - 6:53 pmEAS-PHL
15h 33m2 stops
$777American Airlines
Find Deal
vie., feb. 27 - mar., mar. 3
American Airlines Logo
8:30 am - 1:00 pmPHL-EAS
22h 30m2 stops
American Airlines Logo
9:20 am - 7:39 amEAS-PHL
28h 19m2 stops
$782American Airlines
Find Deal
vie., feb. 27 - mar., mar. 3
Iberia Logo
8:00 pm - 8:50 pmPHL-EAS
18h 50m1 stop
Iberia Logo
1:40 pm - 3:35 pmEAS-PHL
31h 55m1 stop
$869Iberia
Find Deal
vie., feb. 27 - mar., mar. 3
Iberia Logo
8:00 pm - 8:50 pmPHL-EAS
18h 50m1 stop
Iberia Logo
9:20 am - 3:35 pmEAS-PHL
12h 15m1 stop
$1,064Iberia
Find Deal
vie., feb. 27 - mar., mar. 3
American Airlines Logo
8:00 pm - 1:00 pmPHL-EAS
11h 00m1 stop
American Airlines Logo
9:20 am - 8:36 pmEAS-PHL
17h 16m2 stops
$1,155American Airlines
Find Deal
vie., feb. 27 - mar., mar. 3
Iberia Logo
8:00 pm - 1:00 pmPHL-EAS
11h 00m1 stop
Iberia Logo
9:30 pm - 3:35 pmEAS-PHL
24h 05m1 stop
$1,184Iberia
Find Deal
vie., feb. 27 - mar., mar. 3

American Airlines flights from Philadelphia to San Sebastian

Our best American Airlines deals on Philadelphia to San Sebastian flight tickets
American Airlines
Jan 14
PHL7:55 pmPhiladelphia
11h 05m
1 stop
EAS1:00 pmSan Sebastián
Jan 21
EAS1:40 pmSan Sebastián
24h 06m
2 stops
PHL7:46 amPhiladelphia
$527
Find similar
American Airlines
Jan 14
PHL7:55 pmPhiladelphia
11h 05m
1 stop
EAS1:00 pmSan Sebastián
Jan 21
EAS9:30 pmSan Sebastián
24h 10m
1 stop
PHL3:40 pmPhiladelphia
$528
Find similar
American Airlines
Jan 14
PHL10:25 amPhiladelphia
16h 15m
2 stops
EAS8:40 amSan Sebastián
Jan 21
EAS1:40 pmSan Sebastián
25h 03m
2 stops
PHL8:43 amPhiladelphia
$532
Find similar

Iberia flights from Philadelphia to San Sebastian

Our best Iberia deals on Philadelphia to San Sebastian flight tickets
Iberia
Feb 27
PHL8:00 pmPhiladelphia
18h 50m
1 stop
EAS8:50 pmSan Sebastián
Mar 3
EAS1:40 pmSan Sebastián
31h 55m
1 stop
PHL3:35 pmPhiladelphia
$869
Find similar
Iberia
Feb 27
PHL8:00 pmPhiladelphia
18h 50m
1 stop
EAS8:50 pmSan Sebastián
Mar 3
EAS9:20 amSan Sebastián
12h 15m
1 stop
PHL3:35 pmPhiladelphia
$1,064
Find similar
Iberia
Feb 27
PHL8:00 pmPhiladelphia
11h 00m
1 stop
EAS1:00 pmSan Sebastián
Mar 3
EAS9:30 pmSan Sebastián
24h 05m
1 stop
PHL3:35 pmPhiladelphia
$1,184
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to San Sebastian 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 diciembre 2, 2025.
Use the filters below to find and compare flights from Philadelphia to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

mié. 1/14

7:55 pm-1:00 pm

1 stop11h 05m

San Sebastián

mié. 1/21

1:40 pm-7:46 am

2 stops24h 06m

$527

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

mié. 1/14

7:55 pm-1:00 pm

1 stop11h 05m

San Sebastián

mié. 1/21

9:30 pm-3:40 pm

1 stop24h 10m

$528

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

mié. 1/14

10:25 am-8:40 am

2 stops16h 15m

San Sebastián

mié. 1/21

1:40 pm-8:43 am

2 stops25h 03m

$532

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

mié. 1/14

3:30 pm-1:30 pm

2 stops16h 00m

San Sebastián

mié. 1/21

2:05 pm-2:47 pm

3 stops30h 42m

$764

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

vie. 2/27

8:00 pm-8:50 pm

1 stop18h 50m

San Sebastián

mar. 3/3

9:20 am-6:53 pm

2 stops15h 33m

$777

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

vie. 2/27

8:30 am-1:00 pm

2 stops22h 30m

San Sebastián

mar. 3/3

9:20 am-7:39 am

2 stops28h 19m

$782

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

vie. 2/27

8:00 pm-8:50 pm

1 stop18h 50m

San Sebastián

mar. 3/3

1:40 pm-3:35 pm

1 stop31h 55m

$869

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

vie. 2/27

8:00 pm-8:50 pm

1 stop18h 50m

San Sebastián

mar. 3/3

9:20 am-3:35 pm

1 stop12h 15m

$1,064

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

vie. 2/27

8:00 pm-1:00 pm

1 stop11h 00m

San Sebastián

mar. 3/3

9:20 am-8:36 pm

2 stops17h 16m

$1,155

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

vie. 2/27

8:00 pm-1:00 pm

1 stop11h 00m

San Sebastián

mar. 3/3

9:30 pm-3:35 pm

1 stop24h 05m

$1,184

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to San Sebastian from

How to get the cheapest flight ticket from Philadelphia to San Sebastian

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 day to depart on your flight to San Sebastian?

On average, the least expensive day to fly to San Sebastian from Philadelphia is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $960. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to San Sebastian for around $990.

When to book flights from Philadelphia to San Sebastian

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to San Sebastian according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Philadelphia to San Sebastian (PHL to EAS) flight deals and tips

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

Fastest flight time

20h 35m

Direct flights

None
The fastest flight from Philadelphia to San Sebastian takes 20h 35m
There are no direct flights from Philadelphia to San Sebastian. There are no popular flight routes from Philadelphia to San Sebastian.
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  • How far is Philadelphia to San Sebastián by plane?

    There are 3658.8 mi between Philadelphia and San Sebastián. 11h 00m is a normal flight duration for this route.

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

    Prices for flights from Philadelphia Airport to San Sebastián Airport were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Philadelphia Airport to San Sebastián Airport.

  • What documentation or ID do you need to fly to San Sebastián Airport?

    The required travel and health documents for your San Sebastián 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 San Sebastián Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near San Sebastian?

Book flights to San Sebastian if you plan to visit one of these locations
Irun
Hondarribia

Why use momondo?

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

Finding the right flight to San Sebastian from Philadelphia is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Sebastian quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Philadelphia to San Sebastian flights to just show those with flexible booking policies.

How can momondo help me find flights from Philadelphia to San Sebastian?

momondo helps you find the best flight between Philadelphia and San Sebastian 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 San Sebastian right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Philadelphia to San Sebastian now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Sebastian and let you know when they change.

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