$498 Cheap Flights from Detroit (DTW) to San Sebastian (EAS)

View $498 flight on Sun, Mar 15, 2026Opens in a new window

Popular airlines from Detroit Metropolitan Wayne County Airport (DTW) to San Sebastian (EAS)

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Cheap Flights from Detroit to San Sebastian (DTW-EAS)

Prices were available within the past 7 days and start at $498 for one-way flights and $741 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Thu, Jan 29 - Mon, Feb 9
DTW
Detroit
EAS
San Sebastián
$741 Roundtrip, found 3 days ago
$741
Roundtrip
found 3 days ago
Select Iberia flight, departing Thu, Jan 29 from Detroit to San Sebastián, returning Mon, Feb 9, priced at $741 found 3 days ago
American Airlines
Mon, Mar 16 - Mon, Mar 23
DTW
Detroit
EAS
San Sebastián
$931 Roundtrip, found 1 day ago
$931
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Mar 16 from Detroit to San Sebastián, returning Mon, Mar 23, priced at $931 found 1 day ago
American Airlines
Sun, Mar 15 - Mon, Mar 23
DTW
Detroit
EAS
San Sebastián
$936 Roundtrip, found 1 day ago
$936
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sun, Mar 15 from Detroit to San Sebastián, returning Mon, Mar 23, priced at $936 found 1 day ago
Iberia
Mon, May 4 - Tue, May 12
DTW
Detroit
EAS
San Sebastián
$941 Roundtrip, found 5 days ago
$941
Roundtrip
found 5 days ago
Select Iberia flight, departing Mon, May 4 from Detroit to San Sebastián, returning Tue, May 12, priced at $941 found 5 days ago
American Airlines
Mon, May 4 - Tue, May 12
DTW
Detroit
EAS
San Sebastián
$947 Roundtrip, found 5 days ago
$947
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, May 4 from Detroit to San Sebastián, returning Tue, May 12, priced at $947 found 5 days ago
Iberia
Mon, May 4 - Tue, May 12
DTW
Detroit
EAS
San Sebastián
$949 Roundtrip, found 5 days ago
$949
Roundtrip
found 5 days ago
Select Iberia flight, departing Mon, May 4 from Detroit to San Sebastián, returning Tue, May 12, priced at $949 found 5 days ago
Iberia
Mon, May 4 - Tue, May 12
DTW
Detroit
EAS
San Sebastián
$951 Roundtrip, found 5 days ago
$951
Roundtrip
found 5 days ago
Select Iberia flight, departing Mon, May 4 from Detroit to San Sebastián, returning Tue, May 12, priced at $951 found 5 days ago
American Airlines
Mon, May 4 - Tue, May 12
DTW
Detroit
EAS
San Sebastián
$956 Roundtrip, found 5 days ago
$956
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, May 4 from Detroit to San Sebastián, returning Tue, May 12, priced at $956 found 5 days ago
British Airways
Mon, May 4 - Tue, May 12
DTW
Detroit
EAS
San Sebastián
$960 Roundtrip, found 5 days ago
$960
Roundtrip
found 5 days ago
Select British Airways flight, departing Mon, May 4 from Detroit to San Sebastián, returning Tue, May 12, priced at $960 found 5 days ago
JetBlue Airways
Wed, Jan 28 - Tue, Feb 10
DTW
Detroit
EAS
San Sebastián
$964 Roundtrip, found 3 days ago
$964
Roundtrip
found 3 days ago
Select JetBlue Airways flight, departing Wed, Jan 28 from Detroit to San Sebastián, returning Tue, Feb 10, priced at $964 found 3 days ago

Frequently asked questions

How much does a flight from Detroit Metropolitan Wayne County Airport (DTW) to San Sebastian Airport (EAS) cost?
Secure a cheap one-way flight from $498 or cheap return flight from $741 from Detroit Metropolitan Wayne County Airport (DTW) to San Sebastian Airport (EAS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Detroit Metropolitan Wayne County Airport (DTW) to San Sebastian Airport (EAS)?
The cheapest month to fly from DTW to EAS is January, when demand is low. Off-peak months are typically when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Detroit Metropolitan Wayne County Airport (DTW) to San Sebastian Airport (EAS)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest DTW to EAS flight.
How many flights per day from Detroit Metropolitan Wayne County Airport (DTW) to San Sebastian Airport (EAS)?
There aren't any daily direct flights from Detroit Metropolitan Wayne County Airport (DTW) to San Sebastian Airport (EAS). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from DTW to EAS?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change 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 Detroit Metropolitan Wayne County Airport (DTW) to San Sebastian Airport (EAS)?
Choose a flight from Detroit Metropolitan Wayne County Airport (DTW) to San Sebastian Airport (EAS) that takes off before 3 PM to reduce the risk of cancellations. Later departures 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 Detroit Metropolitan Wayne County Airport (DTW) to San Sebastian Airport (EAS) last-minute?
Last-minute fares from DTW to EAS are usually more expensive. To lock in the lowest rates, start looking for flights ahead of time. That said, if your travel plans are flexible, you may land a cheap fare right before your trip.
Is it cheaper to book a DTW to EAS flight and hotel package?
You'll generally save money by booking a DTW to EAS flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've chosen your preferred accommodations and flights, consider adding extras including car rentals, activities and tours.
Can I cancel or change the date of my flight from Detroit Metropolitan Wayne County Airport (DTW) to San Sebastian Airport (EAS)?
If you reserved your DTW to EAS flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

Travel information

Origin airport
Detroit Metropolitan Wayne County
Destination airport
San Sebastian
Airlines serving
American Airlines, Iberia
Roundtrip price
$740
Distance
3958 mi

Book with confidence

Detroit to San Sebastian Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Detroit 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 Detroit 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 Detroit to San Sebastian in 2025. You can also book with separate airlines for your outbound and return journeys, from $498 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 Detroit 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 Detroit 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.

 

Detroit to San Sebastian Flights

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