How does KAYAK find such low prices on flights from Pennsylvania to San Sebastian?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Pennsylvania to San Sebastian.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to San Sebastian?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Sebastian from Pennsylvania is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Pennsylvania to San Sebastian?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Sebastian with an airline and back to Pennsylvania with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pennsylvania to San Sebastian?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Sebastian from Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$886 CHEAP FLIGHTS from Pennsylvania to San Sebastian

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Cheap Flights from Pennsylvania to San Sebastian

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Pennsylvania to San Sebastian

Tue, Nov 3 - Fri, Nov 13

7:40 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

31h 00m2 stops London Heathrow Madrid Barajas

9:20 am - 10:30 pmEAS San Sebastián-PHL Philadelphia

19h 10m2 stops Madrid Barajas Boston Logan Intl

$886Iberia

Tue, Nov 3 - Fri, Nov 13

10:49 am - 1:00 pmPHL Philadelphia-EAS San Sebastián

20h 11m2 stops Boston Logan Intl Madrid Barajas

1:40 pm - 10:30 pmEAS San Sebastián-PHL Philadelphia

14h 50m2 stops Madrid Barajas Boston Logan Intl

$888American Airlines

Tue, Nov 3 - Fri, Nov 13

1:10 pm - 1:00 pmPHL Philadelphia-EAS San Sebastián

17h 50m2 stops Boston Logan Intl Madrid Barajas

9:30 pm - 3:35 pmEAS San Sebastián-PHL Philadelphia

24h 05m1 stop Madrid Barajas

$938Multiple Airlines

Tue, Nov 3 - Fri, Nov 13

7:45 pm - 1:00 pmPHL Philadelphia-EAS San Sebastián

11h 15m1 stop Madrid Barajas

9:20 am - 3:35 pmEAS San Sebastián-PHL Philadelphia

12h 15m1 stop Madrid Barajas

$1,155Finnair

Tue, Nov 3 - Fri, Nov 13

7:45 pm - 8:50 pmPHL Philadelphia-EAS San Sebastián

19h 05m1 stop Madrid Barajas

9:30 pm - 3:35 pmEAS San Sebastián-PHL Philadelphia

24h 05m1 stop Madrid Barajas

$1,216Multiple Airlines

Fri, Nov 20 - Fri, Nov 27

5:40 pm - 4:55 pmPHL Philadelphia-EAS San Sebastián

41h 15m2 stops Dublin Madrid Barajas

9:20 am - 3:45 pmEAS San Sebastián-PHL Philadelphia

12h 25m1 stop Madrid Barajas

$1,251Multiple Airlines

Fri, Nov 20 - Fri, Nov 27

7:50 pm - 8:50 pmPHL Philadelphia-EAS San Sebastián

19h 00m1 stop Madrid Barajas

9:30 pm - 3:45 pmEAS San Sebastián-PHL Philadelphia

24h 15m1 stop Madrid Barajas

$1,266Multiple Airlines

Fri, Nov 20 - Fri, Nov 27

8:55 pm - 8:50 pmPHL Philadelphia-EAS San Sebastián

17h 55m2 stops Dublin Madrid Barajas

1:40 pm - 8:20 amEAS San Sebastián-PHL Philadelphia

24h 40m2 stops Madrid Barajas Boston Logan Intl

$1,277Multiple Airlines

Tue, Nov 3 - Fri, Nov 13

3:20 pm - 1:35 pmPHL Philadelphia-EAS San Sebastián

16h 15m3 stops Montreal Pierre Elliott Trudeau Intl Madrid Barajas Barcelona-El Prat

2:10 pm - 11:54 pmEAS San Sebastián-PHL Philadelphia

39h 44m3 stops Barcelona-El Prat Lisbon Humberto Delgado Miami

$1,441Multiple Airlines

Tue, Nov 3 - Fri, Nov 13

3:20 pm - 1:35 pmPHL Philadelphia-EAS San Sebastián

16h 15m2 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat

2:10 pm - 11:54 pmEAS San Sebastián-PHL Philadelphia

39h 44m3 stops Barcelona-El Prat Lisbon Humberto Delgado Miami

$1,552Multiple Airlines

Useful Info

Cheapest flight	$886

Flight from Philadelphia to San Sebastian

How does KAYAK find such low prices on flights from Pennsylvania to San Sebastian?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Pennsylvania to San Sebastian.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to San Sebastian?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Sebastian from Pennsylvania is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Pennsylvania to San Sebastian?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Sebastian with an airline and back to Pennsylvania with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pennsylvania to San Sebastian?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Sebastian from Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.