$707+ Cheap flights from Philadelphia (PHL) to San Sebastian (EAS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — EAS
Jan 14 — Jan 211
1 adult, Economy
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Find cheap flights from Philadelphia to San Sebastian with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Philadelphia to San Sebastian
Best flights from Philadelphia to San SebastianDiscover carefully curated flight deals from Philadelphia to San Sebastian that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 15, 2025.
Discover carefully curated flight deals from Philadelphia to San Sebastian that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 15, 2025.
This Travelocity deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/108:30 pmPHL - EAS
1 stop30h 10mIberia
Sat 5/169:30 pmEAS - PHL
1 stop25h 45mIberia
Deal found 12/13![Iberia logo]()
$707
This Gurufare deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/108:30 pmPHL - EAS
1 stop30h 10mMultiple Airlines
Sat 5/169:30 pmEAS - PHL
2 stops30h 36mMultiple Airlines
Deal found 12/13![Multiple Airlines logo]()
$897
This Iberia deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/201:47 pmPHL - EAS
2 stops18h 13mIberia
Tue 3/249:30 pmEAS - PHL
1 stop24h 05mIberia
Deal found 12/14![Iberia logo]()
$861
Find flight deals from Philadelphia to San Sebastian
Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to San Sebastian (EAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 15, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $707 (Travelocity) |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
Use the filters below to find and compare flights from Philadelphia to San Sebastian that are best for you.
Fly from
Philadelphia
Fly to
San Sebastian
Route
Depart
Return
Price
PhiladelphiaSan Sebastian
PHL - EAS
PHLEAS
Philadelphia
Sun 5/10
8:30 pm-8:40 am
1 stop30h 10m
San Sebastián
Sat 5/16
9:30 pm-5:15 pm
1 stop25h 45m
$707
PhiladelphiaSan Sebastian
PHL - EAS
PHLEAS
Philadelphia
Fri 3/20
1:47 pm-1:00 pm
2 stops18h 13m
San Sebastián
Tue 3/24
9:30 pm-4:35 pm
1 stop24h 05m
$861
PhiladelphiaSan Sebastian
PHL - EAS
PHLEAS
Philadelphia
Sun 5/10
8:30 pm-8:40 am
1 stop30h 10m
San Sebastián
Sat 5/16
9:30 pm-10:06 pm
2 stops30h 36m
$897
PhiladelphiaSan Sebastian
PHL - EAS
PHLEAS
Philadelphia
Fri 5/22
8:30 pm-1:00 pm
1 stop10h 30m
$1,860
PhiladelphiaSan Sebastian
PHL - EAS
PHLEAS
Philadelphia
Fri 5/22
4:45 pm-1:00 pm
2 stops14h 15m
$1,926
PhiladelphiaSan Sebastian
PHL - EAS
PHLEAS
Philadelphia
Fri 5/22
7:25 pm-5:35 pm
1 stop16h 10m
$4,241
Compare providers for flights from Philadelphia to San Sebastian
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to San Sebastian in December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Philadelphia-San Sebastian flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Philadelphia-San Sebastian flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Philadelphia-San Sebastian flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Philadelphia-San Sebastian flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-San Sebastian flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Philadelphia to San Sebastian
Have a flexible travel schedule? Discover the best time to fly to San Sebastian from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Philadelphia to San Sebastian
What is the cheapest month to book a flight from Philadelphia to San Sebastian?
Currently, May is the cheapest month in which you can book a flight from Philadelphia to San Sebastian (average of $72). Flying from Philadelphia to San Sebastian in August is currently the most expensive (average of $635). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PHL to EAS?
Find hourly flight availability from Philadelphia to San Sebastian. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.
It’s typically best to fly out from Philadelphia to San Sebastian in the morning. Doing so could potentially save you 43% on the flight price compared to flying in the afternoon, which is usually more expensive.