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.

$450 CHEAP FLIGHTS from Pennsylvania to San Sebastian

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Flight Deals

Cheap Flights from Pennsylvania to San Sebastian

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Pennsylvania to San Sebastian

Mon, Nov 9 - Mon, Nov 16

8:30 am - 8:40 amPHL Philadelphia-EAS San Sebastián

18h 10m2 stops Charlotte Douglas Madrid Barajas

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

24h 05m1 stop Madrid Barajas

$887American Airlines

Mon, Nov 9 - Mon, Nov 16

7:45 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

30h 55m1 stop Madrid Barajas

1:40 pm - 3:35 pmEAS San Sebastián-PHL Philadelphia

31h 55m1 stop Madrid Barajas

$892Iberia

Mon, Nov 9 - Mon, Nov 16

10:30 am - 8:40 amPHL Philadelphia-EAS San Sebastián

16h 10m2 stops Charlotte Douglas Madrid Barajas

9:30 pm - 2:55 pmEAS San Sebastián-PHL Philadelphia

23h 25m2 stops Madrid Barajas Dallas/Fort Worth

$905Multiple Airlines

Thu, Nov 19 - Mon, Nov 30

9:15 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

29h 25m2 stops Lisbon Humberto Delgado Madrid Barajas

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

24h 15m1 stop Madrid Barajas

$1,016Iberia

Thu, Nov 19 - Mon, Nov 30

9:15 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

29h 25m2 stops Lisbon Humberto Delgado Madrid Barajas

1:40 pm - 4:11 pmEAS San Sebastián-PHL Philadelphia

56h 31m2 stops Madrid Barajas Chicago O'Hare Intl

$1,033Iberia

Thu, Nov 19 - Mon, Nov 30

7:50 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

30h 50m1 stop Madrid Barajas

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

24h 15m1 stop Madrid Barajas

$1,178Multiple Airlines

Thu, Nov 19 - Tue, Dec 1

8:55 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

29h 45m2 stops Dublin Madrid Barajas

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

12h 25m1 stop Madrid Barajas

$1,332Multiple Airlines

Thu, Nov 19 - Tue, Dec 1

8:55 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

29h 45m2 stops Dublin Madrid Barajas

9:30 pm - 4:15 pmEAS San Sebastián-PHL Philadelphia

24h 45m2 stops Madrid Barajas London Heathrow

$1,366Iberia

Thu, Nov 19 - Mon, Nov 30

9:15 am - 1:35 pmPHL Philadelphia-EAS San Sebastián

22h 20m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat

11:35 am - 4:10 pmEAS San Sebastián-PHL Philadelphia

34h 35m2 stops Malaga Dublin

$1,601Multiple Airlines

Thu, Nov 19 - Mon, Nov 30

9:15 am - 1:35 pmPHL Philadelphia-EAS San Sebastián

22h 20m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat

2:10 pm - 4:05 pmEAS San Sebastián-PHL Philadelphia

31h 55m3 stops Barcelona-El Prat Porto Frankfurt am Main

$2,287Multiple Airlines

Recent last minute flight deals from Pennsylvania to San Sebastian

Tue, Sep 29 - Sun, Oct 4

4:20 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

10h 20m1 stop Madrid Barajas

5:55 pm - 4:40 pmEAS San Sebastián-PHL Philadelphia

28h 45m2 stops Barcelona-El Prat London Heathrow

$1,301Iberia

Tue, Sep 29 - Sun, Oct 4

6:45 pm - 8:35 amPHL Philadelphia-EAS San Sebastián

31h 50m2 stops London Heathrow Barcelona-El Prat

5:55 pm - 4:40 pmEAS San Sebastián-PHL Philadelphia

28h 45m2 stops Barcelona-El Prat London Heathrow

$1,354Iberia

Tue, Sep 29 - Sun, Oct 4

4:20 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

10h 20m1 stop Madrid Barajas

8:55 am - 3:30 pmEAS San Sebastián-PHL Philadelphia

12h 35m1 stop Barcelona-El Prat

$1,400Multiple Airlines

Tue, Sep 29 - Sun, Oct 4

4:20 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

10h 20m1 stop Madrid Barajas

8:55 am - 3:30 pmEAS San Sebastián-PHL Philadelphia

12h 35m1 stop Barcelona-El Prat

$1,401Multiple Airlines

Tue, Sep 29 - Sun, Oct 4

4:20 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

10h 20m1 stop Madrid Barajas

8:55 am - 3:30 pmEAS San Sebastián-PHL Philadelphia

12h 35m1 stop Barcelona-El Prat

$1,464Multiple Airlines

Tue, Sep 29 - Sun, Oct 4

4:20 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

10h 20m1 stop Madrid Barajas

8:55 am - 11:00 pmEAS San Sebastián-PHL Philadelphia

20h 05m2 stops Barcelona-El Prat Miami

$1,495Multiple Airlines

Tue, Sep 29 - Sun, Oct 4

5:50 pm - 8:35 amPHL Philadelphia-EAS San Sebastián

32h 45m1 stop Barcelona-El Prat

8:55 am - 3:30 pmEAS San Sebastián-PHL Philadelphia

12h 35m1 stop Barcelona-El Prat

$1,523Multiple Airlines

Tue, Sep 29 - Sun, Oct 4

4:20 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

10h 20m1 stop Madrid Barajas

5:55 pm - 4:40 pmEAS San Sebastián-PHL Philadelphia

28h 45m2 stops Barcelona-El Prat London Heathrow

$1,571Iberia

Tue, Sep 29 - Sun, Oct 4

4:20 pm - 8:40 amPHL Philadelphia-EAS San Sebastián

10h 20m1 stop Madrid Barajas

5:55 pm - 4:40 pmEAS San Sebastián-PHL Philadelphia

28h 45m2 stops Barcelona-El Prat London Heathrow

$1,572Iberia

Tue, Sep 29 - Sun, Oct 4

6:45 pm - 8:35 amPHL Philadelphia-EAS San Sebastián

31h 50m2 stops London Heathrow Barcelona-El Prat

5:55 pm - 4:40 pmEAS San Sebastián-PHL Philadelphia

28h 45m2 stops Barcelona-El Prat London Heathrow

$1,625Iberia

Useful Info

Cheapest flight	$450

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.