$466 Cheap Flights from Baltimore (BWI) to San Sebastian (EAS)

View $466 flight on Tue, Mar 17, 2026Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to San Sebastian (EAS)

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Cheap Flights from Baltimore to San Sebastian (BWI-EAS)

Prices were available within the past 7 days and start at $466 for one-way flights and $613 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Wed, Jan 21 - Wed, Jan 28
BWI
Baltimore
EAS
San Sebastián
$613 Roundtrip, found 1 day ago
$613
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, Jan 21 from Baltimore to San Sebastián, returning Wed, Jan 28, priced at $613 found 1 day ago
British Airways
Wed, Jan 21 - Wed, Jan 28
BWI
Baltimore
EAS
San Sebastián
$622 Roundtrip, found 1 day ago
$622
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, Jan 21 from Baltimore to San Sebastián, returning Wed, Jan 28, priced at $622 found 1 day ago
British Airways
Wed, Jan 21 - Wed, Jan 28
BWI
Baltimore
EAS
San Sebastián
$631 Roundtrip, found 1 day ago
$631
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, Jan 21 from Baltimore to San Sebastián, returning Wed, Jan 28, priced at $631 found 1 day ago
British Airways
Wed, Jan 21 - Wed, Jan 28
BWI
Baltimore
EAS
San Sebastián
$639 Roundtrip, found 1 day ago
$639
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, Jan 21 from Baltimore to San Sebastián, returning Wed, Jan 28, priced at $639 found 1 day ago
British Airways
Wed, Jan 21 - Wed, Jan 28
BWI
Baltimore
EAS
San Sebastián
$648 Roundtrip, found 1 day ago
$648
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, Jan 21 from Baltimore to San Sebastián, returning Wed, Jan 28, priced at $648 found 1 day ago
Iberia
Wed, Jan 21 - Wed, Jan 28
BWI
Baltimore
EAS
San Sebastián
$705 Roundtrip, found 1 day ago
$705
Roundtrip
found 1 day ago
Select Iberia flight, departing Wed, Jan 21 from Baltimore to San Sebastián, returning Wed, Jan 28, priced at $705 found 1 day ago
British Airways
Wed, Jan 21 - Wed, Jan 28
BWI
Baltimore
EAS
San Sebastián
$706 Roundtrip, found 1 day ago
$706
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, Jan 21 from Baltimore to San Sebastián, returning Wed, Jan 28, priced at $706 found 1 day ago
Iberia
Wed, Jan 21 - Wed, Jan 28
BWI
Baltimore
EAS
San Sebastián
$713 Roundtrip, found 1 day ago
$713
Roundtrip
found 1 day ago
Select Iberia flight, departing Wed, Jan 21 from Baltimore to San Sebastián, returning Wed, Jan 28, priced at $713 found 1 day ago
British Airways
Wed, Jan 21 - Wed, Jan 28
BWI
Baltimore
EAS
San Sebastián
$715 Roundtrip, found 1 day ago
$715
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, Jan 21 from Baltimore to San Sebastián, returning Wed, Jan 28, priced at $715 found 1 day ago
American Airlines
Fri, Jan 9 - Sun, Jan 18
BWI
Baltimore
EAS
San Sebastián
$1,337 Roundtrip, found 2 days ago
$1,337
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Jan 9 from Baltimore to San Sebastián, returning Sun, Jan 18, priced at $1,337 found 2 days ago

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Sebastian Airport (EAS) cost?
Lock in a cheap one-way flight from $466 or cheap return flight from $613 from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Sebastian Airport (EAS)?
Planning your trip for January is a great way to save, as it's the cheapest month for flights between BWI and EAS. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Sebastian Airport (EAS)?
To find the cheapest airline flying from BWI to EAS, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Sebastian Airport (EAS)?
You'll need to book a flight with a layover if you're traveling from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Sebastian Airport (EAS). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from BWI to EAS?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Sebastian Airport (EAS)?
Select a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Sebastian Airport (EAS) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour have a 22% higher chance of being canceled, on average.**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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Sebastian Airport (EAS) last-minute?
Waiting until right before your break to book a ticket from BWI to EAS generally means paying more. While it's possible to find some last-minute offers, there's no guarantee. Keep your travel plans flexible to boost your chances of getting a bargain.
Is it cheaper to book a BWI to EAS flight and hotel package?
Securing a BWI to EAS flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Pick from our extensive range of hotels and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Sebastian Airport (EAS)?
You can usually reschedule or cancel your BWI to EAS flight. However, if the booking was 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.

Travel information

Travel information

Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
San Sebastian
Airlines serving
American Airlines, Iberia
Roundtrip price
$613
Distance
3765 mi

Book with confidence

Book with confidence

Baltimore to San Sebastian Flights

The cheapest times to fly from Baltimore 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 Baltimore to San Sebastian are during the month of January. You can find some of the cheapest flights from Baltimore to San Sebastian with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Baltimore 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 Baltimore 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 Baltimore to San Sebastian in 2025. You can also book with separate airlines for your outbound and return journeys, from $466 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 Baltimore 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 Baltimore 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.

 

Baltimore to San Sebastian Flights

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*Available to One Key members.