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Cheap flights from Philadelphia to San Sebastian from $314

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 San Sebastian departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Philadelphia to San Sebastian (PHL-EAS)

Cheap round-trip flights

Iberia Logo
10:47 am - 8:50 pmPHL-EAS
28h 03m2 stops
Iberia Logo
9:30 pm - 4:10 pmEAS-PHL
24h 40m1 stop
$706Iberia
Find Deal
Mon, Sep 29 - Mon, Oct 6
Iberia Logo
8:25 pm - 8:40 amPHL-EAS
30h 15m1 stop
Iberia Logo
9:30 pm - 4:10 pmEAS-PHL
24h 40m1 stop
$711Iberia
Find Deal
Mon, Sep 29 - Mon, Oct 6
American Airlines Logo
2:00 pm - 1:00 pmPHL-EAS
17h 00m2 stops
American Airlines Logo
9:20 am - 7:55 pmEAS-PHL
16h 35m2 stops
$731American Airlines
Find Deal
Mon, Sep 29 - Mon, Oct 6
American Airlines Logo
7:55 pm - 8:40 amPHL-EAS
30h 45m1 stop
American Airlines Logo
9:20 am - 8:42 amEAS-PHL
29h 22m2 stops
$960American Airlines
Find Deal
Wed, Nov 12 - Sun, Nov 16
American Airlines Logo
11:30 am - 8:50 pmPHL-EAS
27h 20m2 stops
American Airlines Logo
9:20 am - 7:44 amEAS-PHL
28h 24m2 stops
$969American Airlines
Find Deal
Wed, Nov 12 - Sun, Nov 16
Logo
5:35 pm - 8:30 amPHL-EAS
32h 55m3 stops
Logo
5:55 pm - 4:00 pmEAS-PHL
28h 05m3 stops
$1,101
Find Deal
Mon, Sep 29 - Mon, Oct 6
Iberia Logo
9:25 pm - 8:40 amPHL-EAS
29h 15m2 stops
Iberia Logo
9:30 pm - 3:30 pmEAS-PHL
24h 00m2 stops
$1,138Iberia
Find Deal
Mon, Sep 22 - Sun, Sep 28
Logo
8:25 pm - 8:40 amPHL-EAS
30h 15m1 stop
Logo
9:30 pm - 4:40 pmEAS-PHL
25h 10m2 stops
$1,150
Find Deal
Mon, Sep 22 - Sun, Sep 28
Iberia Logo
8:25 pm - 8:40 amPHL-EAS
30h 15m1 stop
Iberia Logo
9:30 pm - 3:55 pmEAS-PHL
24h 25m1 stop
$1,151Iberia
Find Deal
Mon, Sep 22 - Sun, Sep 28
Iberia Logo
8:25 pm - 8:40 amPHL-EAS
30h 15m1 stop
Iberia Logo
9:30 pm - 3:55 pmEAS-PHL
24h 25m1 stop
$1,153Iberia
Find Deal
Mon, Sep 22 - Sun, Sep 28

Iberia flights from Philadelphia to San Sebastian

Our best Iberia deals on Philadelphia to San Sebastian flight tickets
Iberia
Sep 29
PHL10:47 amPhiladelphia
28h 03m
2 stops
EAS8:50 pmSan Sebastián
Oct 6
EAS9:30 pmSan Sebastián
24h 40m
1 stop
PHL4:10 pmPhiladelphia
$706
Find similar
Iberia
Sep 29
PHL8:25 pmPhiladelphia
30h 15m
1 stop
EAS8:40 amSan Sebastián
Oct 6
EAS9:30 pmSan Sebastián
24h 40m
1 stop
PHL4:10 pmPhiladelphia
$711
Find similar
Iberia
Sep 22
PHL9:25 pmPhiladelphia
29h 15m
2 stops
EAS8:40 amSan Sebastián
Sep 28
EAS9:30 pmSan Sebastián
24h 00m
2 stops
PHL3:30 pmPhiladelphia
$1,138
Find similar

American Airlines flights from Philadelphia to San Sebastian

Our best American Airlines deals on Philadelphia to San Sebastian flight tickets
American Airlines
Sep 29
PHL2:00 pmPhiladelphia
17h 00m
2 stops
EAS1:00 pmSan Sebastián
Oct 6
EAS9:20 amSan Sebastián
16h 35m
2 stops
PHL7:55 pmPhiladelphia
$731
Find similar
American Airlines
Nov 12
PHL7:55 pmPhiladelphia
30h 45m
1 stop
EAS8:40 amSan Sebastián
Nov 16
EAS9:20 amSan Sebastián
29h 22m
2 stops
PHL8:42 amPhiladelphia
$960
Find similar
American Airlines
Nov 12
PHL11:30 amPhiladelphia
27h 20m
2 stops
EAS8:50 pmSan Sebastián
Nov 16
EAS9:20 amSan Sebastián
28h 24m
2 stops
PHL7:44 amPhiladelphia
$969
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 September 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

Mon 9/29

10:47 am-8:50 pm

2 stops28h 03m

San Sebastián

Mon 10/6

9:30 pm-4:10 pm

1 stop24h 40m

$706

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

Mon 9/29

8:25 pm-8:40 am

1 stop30h 15m

San Sebastián

Mon 10/6

9:30 pm-4:10 pm

1 stop24h 40m

$711

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

Mon 9/29

2:00 pm-1:00 pm

2 stops17h 00m

San Sebastián

Mon 10/6

9:20 am-7:55 pm

2 stops16h 35m

$731

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

Wed 11/12

7:55 pm-8:40 am

1 stop30h 45m

San Sebastián

Sun 11/16

9:20 am-8:42 am

2 stops29h 22m

$960

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

Wed 11/12

11:30 am-8:50 pm

2 stops27h 20m

San Sebastián

Sun 11/16

9:20 am-7:44 am

2 stops28h 24m

$969

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

Mon 9/29

5:35 pm-8:30 am

3 stops32h 55m

San Sebastián

Mon 10/6

5:55 pm-4:00 pm

3 stops28h 05m

$1,101

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

Mon 9/22

9:25 pm-8:40 am

2 stops29h 15m

San Sebastián

Sun 9/28

9:30 pm-3:30 pm

2 stops24h 00m

$1,138

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

Mon 9/22

8:25 pm-8:40 am

1 stop30h 15m

San Sebastián

Sun 9/28

9:30 pm-4:40 pm

2 stops25h 10m

$1,150

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

Mon 9/22

8:25 pm-8:40 am

1 stop30h 15m

San Sebastián

Sun 9/28

9:30 pm-3:55 pm

1 stop24h 25m

$1,151

PhiladelphiaSan Sebastian

PHL - EAS

PHLEAS

Philadelphia

Mon 9/22

8:25 pm-8:40 am

1 stop30h 15m

San Sebastián

Sun 9/28

9:30 pm-3:55 pm

1 stop24h 25m

$1,153

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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

Direct flights

None
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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