$493 Cheap Flights from Philadelphia (PHL) to San Sebastian (EAS)

View $493 flight on Wed, Dec 3, 2025Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to San Sebastian (EAS)

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Cheap Flights from Philadelphia to San Sebastian (PHL-EAS)

Prices were available within the past 7 days and start at $493 for one-way flights and $681 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Wed, Dec 3 - Wed, Dec 17
PHL
Philadelphia
EAS
San Sebastián
$681 Roundtrip, found 6 days ago
$681
Roundtrip
found 6 days ago
Select Iberia flight, departing Wed, Dec 3 from Philadelphia to San Sebastián, returning Wed, Dec 17, priced at $681 found 6 days ago
Iberia
Mon, Sep 29 - Mon, Oct 6
PHL
Philadelphia
EAS
San Sebastián
$681 Roundtrip, found 1 day ago
$681
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Sep 29 from Philadelphia to San Sebastián, returning Mon, Oct 6, priced at $681 found 1 day ago
Iberia
Mon, Sep 29 - Mon, Oct 6
PHL
Philadelphia
EAS
San Sebastián
$686 Roundtrip, found 1 day ago
$686
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Sep 29 from Philadelphia to San Sebastián, returning Mon, Oct 6, priced at $686 found 1 day ago
Iberia
Mon, Sep 29 - Mon, Oct 6
PHL
Philadelphia
EAS
San Sebastián
$690 Roundtrip, found 1 day ago
$690
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Sep 29 from Philadelphia to San Sebastián, returning Mon, Oct 6, priced at $690 found 1 day ago
Iberia
Mon, Sep 29 - Mon, Oct 6
PHL
Philadelphia
EAS
San Sebastián
$691 Roundtrip, found 1 day ago
$691
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Sep 29 from Philadelphia to San Sebastián, returning Mon, Oct 6, priced at $691 found 1 day ago
Iberia
Mon, Sep 29 - Mon, Oct 6
PHL
Philadelphia
EAS
San Sebastián
$695 Roundtrip, found 1 day ago
$695
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Sep 29 from Philadelphia to San Sebastián, returning Mon, Oct 6, priced at $695 found 1 day ago
Iberia
Mon, Sep 29 - Mon, Oct 6
PHL
Philadelphia
EAS
San Sebastián
$700 Roundtrip, found 1 day ago
$700
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Sep 29 from Philadelphia to San Sebastián, returning Mon, Oct 6, priced at $700 found 1 day ago
British Airways
Wed, Dec 3 - Wed, Dec 17
PHL
Philadelphia
EAS
San Sebastián
$704 Roundtrip, found 6 days ago
$704
Roundtrip
found 6 days ago
Select British Airways flight, departing Wed, Dec 3 from Philadelphia to San Sebastián, returning Wed, Dec 17, priced at $704 found 6 days ago
Iberia
Mon, Sep 29 - Mon, Oct 6
PHL
Philadelphia
EAS
San Sebastián
$705 Roundtrip, found 1 day ago
$705
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Sep 29 from Philadelphia to San Sebastián, returning Mon, Oct 6, priced at $705 found 1 day ago
American Airlines
Mon, Sep 29 - Mon, Oct 6
PHL
Philadelphia
EAS
San Sebastián
$896 Roundtrip, found 1 day ago
$896
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Sep 29 from Philadelphia to San Sebastián, returning Mon, Oct 6, priced at $896 found 1 day ago

Alternative airports near San Sebastián

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Sebastian EAS. Cheapest and Closest option available. Average driving time to city center is 18 minutes. Flights from $1,535
EAS
San Sebastian
CheapestClosest
Average driving time to city center18 min
Flights from $1,535
Flights from Philadelphia (PHL) to San Sebastian (EAS)
Origin airport
Philadelphia Intl.
Destination airport
San Sebastian
Airlines serving
American Airlines, Iberia
Roundtrip price
$680
Distance
3675 mi

Philadelphia to San Sebastian Flights

The cheapest times to fly from Philadelphia to San Sebastian

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philadelphia to San Sebastian are during the month of December. You can find some of the cheapest flights from Philadelphia to San Sebastian with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Philadelphia to San Sebastian

Sunday is one of the best days to book for cheap flights from Philadelphia to San Sebastian: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Philadelphia to San Sebastian

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philadelphia to San Sebastian in 2025. You can also book with separate airlines for your outbound and return journeys, from $493 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philadelphia to San Sebastian flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Philadelphia to San Sebastian airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to San Sebastian Airport (EAS) cost?
Grab a cheap one-way flight from $493 or cheap return flight from $681 from Philadelphia Intl. Airport (PHL) to San Sebastian Airport (EAS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Philadelphia Intl. Airport (PHL) to San Sebastian Airport (EAS)?
December is the most affordable month to fly from PHL to EAS. Planning your trip for the off-season is often the key to landing a great deal.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to San Sebastian Airport (EAS)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest PHL to EAS flight.
How many flights per day from Philadelphia Intl. Airport (PHL) to San Sebastian Airport (EAS)?
There aren't any daily direct flights departing from Philadelphia Intl. Airport (PHL) to San Sebastian Airport (EAS). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from PHL to EAS?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to San Sebastian Airport (EAS)?
To avoid potential delays on the Philadelphia Intl. Airport (PHL) to San Sebastian Airport (EAS) route, fly before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to San Sebastian Airport (EAS) last-minute?
Holding off until just before your departure to book a ticket from PHL to EAS generally means paying more. While it's possible to find some last-minute discounts, they're not always guaranteed. Keep your travel plans flexible for the best chance of landing a bargain.
Is it cheaper to book a PHL to EAS flight and hotel package?
Booking a PHL to EAS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Choose from our wide range of accommodations and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to San Sebastian Airport (EAS)?
Usually, it's possible to cancel or reschedule your PHL to EAS flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.