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Cheap flights from the United States to San Sebastian from $234

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to San Sebastian departing on 2/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from the United States to San Sebastian

Recent round-trip flight deals from the United States to San Sebastian

Enter your travel dates to find the best prices.
Iberia Logo
5:45 pm - 8:40 amBOS-EAS
9h 55m1 stop
Iberia Logo
9:30 pm - 4:15 pmEAS-BOS
23h 45m1 stop
$482Iberia
Find Deal
Mon, Mar 9 - Mon, Mar 16
American Airlines Logo
2:12 pm - 8:40 amBOS-EAS
13h 28m2 stops
American Airlines Logo
9:30 pm - 4:15 pmEAS-BOS
23h 45m1 stop
$487American Airlines
Find Deal
Mon, Mar 9 - Mon, Mar 16
Iberia Logo
4:45 pm - 1:00 pmBOS-EAS
14h 15m1 stop
Iberia Logo
1:40 pm - 7:50 pmEAS-BOS
12h 10m1 stop
$492Iberia
Find Deal
Tue, Dec 2 - Sun, Dec 7
Iberia Logo
4:45 pm - 1:00 pmBOS-EAS
14h 15m1 stop
Iberia Logo
9:30 pm - 4:00 pmEAS-BOS
48h 30m2 stops
$494Iberia
Find Deal
Tue, Dec 2 - Sun, Dec 7
Iberia Logo
4:45 pm - 8:40 amBOS-EAS
9h 55m1 stop
Iberia Logo
9:20 am - 7:50 pmEAS-BOS
16h 30m1 stop
$497Iberia
Find Deal
Tue, Dec 2 - Sun, Dec 7
Iberia Logo
12:01 pm - 8:40 amBOS-EAS
14h 39m2 stops
Iberia Logo
1:40 pm - 7:50 pmEAS-BOS
12h 10m1 stop
$502Iberia
Find Deal
Sun, Feb 22 - Sun, Mar 1
American Airlines Logo
11:56 am - 1:00 pmBOS-EAS
19h 04m2 stops
American Airlines Logo
9:20 am - 6:52 pmEAS-BOS
15h 32m2 stops
$512American Airlines
Find Deal
Tue, Dec 2 - Sun, Dec 7
British Airways Logo
9:15 pm - 12:40 pmORD-EAS
32h 25m1 stop
British Airways Logo
1:25 pm - 1:50 pmEAS-ORD
31h 25m1 stop
$874British Airways
Find Deal
Tue, Apr 7 - Thu, Apr 23
British Airways Logo
9:15 pm - 12:40 pmORD-EAS
32h 25m1 stop
British Airways Logo
1:25 pm - 1:50 pmEAS-ORD
31h 25m1 stop
$949British Airways
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Tue, Apr 21 - Thu, May 7
LEVEL Logo
8:55 pm - 8:20 amLAX-EAS
26h 25m1 stop
LEVEL Logo
5:55 pm - 6:10 pmEAS-LAX
33h 15m1 stop
$952LEVEL
Find Deal
Sat, Apr 25 - Tue, May 5

Iberia flights from United States to San Sebastian

Our best Iberia deals on United States to San Sebastian flight tickets
Iberia
Mar 9
BOS5:45 pmBoston Logan Intl
9h 55m
1 stop
EAS8:40 amSan Sebastián
Mar 16
EAS9:30 pmSan Sebastián
23h 45m
1 stop
BOS4:15 pmBoston Logan Intl
$482
Find similar
Iberia
Dec 2
BOS4:45 pmBoston Logan Intl
14h 15m
1 stop
EAS1:00 pmSan Sebastián
Dec 7
EAS1:40 pmSan Sebastián
12h 10m
1 stop
BOS7:50 pmBoston Logan Intl
$492
Find similar
Iberia
Dec 2
BOS4:45 pmBoston Logan Intl
14h 15m
1 stop
EAS1:00 pmSan Sebastián
Dec 7
EAS9:30 pmSan Sebastián
48h 30m
2 stops
BOS4:00 pmBoston Logan Intl
$494
Find similar

American Airlines flights from United States to San Sebastian

Our best American Airlines deals on United States to San Sebastian flight tickets
American Airlines
Mar 9
BOS2:12 pmBoston Logan Intl
13h 28m
2 stops
EAS8:40 amSan Sebastián
Mar 16
EAS9:30 pmSan Sebastián
23h 45m
1 stop
BOS4:15 pmBoston Logan Intl
$487
Find similar
American Airlines
Dec 2
BOS11:56 amBoston Logan Intl
19h 04m
2 stops
EAS1:00 pmSan Sebastián
Dec 7
EAS9:20 amSan Sebastián
15h 32m
2 stops
BOS6:52 pmBoston Logan Intl
$512
Find similar
American Airlines
Dec 7
BOS12:03 pmBoston Logan Intl
14h 37m
2 stops
EAS8:40 amSan Sebastián
Dec 13
EAS9:30 pmSan Sebastián
28h 20m
1 stop
BOS7:50 pmBoston Logan Intl
$513
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from United States 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, momondo users made 832,500 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from the United States to San Sebastian that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 3/9

5:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Mon 3/16

9:30 pm-4:15 pm

1 stop23h 45m

$482

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 3/9

2:12 pm-8:40 am

2 stops13h 28m

San Sebastián

Mon 3/16

9:30 pm-4:15 pm

1 stop23h 45m

$487

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 12/2

4:45 pm-1:00 pm

1 stop14h 15m

San Sebastián

Sun 12/7

1:40 pm-7:50 pm

1 stop12h 10m

$492

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 12/2

4:45 pm-1:00 pm

1 stop14h 15m

San Sebastián

Sun 12/7

9:30 pm-4:00 pm

2 stops48h 30m

$494

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 12/2

4:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Sun 12/7

9:20 am-7:50 pm

1 stop16h 30m

$497

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 2/22

12:01 pm-8:40 am

2 stops14h 39m

San Sebastián

Sun 3/1

1:40 pm-7:50 pm

1 stop12h 10m

$502

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Tue 12/2

11:56 am-1:00 pm

2 stops19h 04m

San Sebastián

Sun 12/7

9:20 am-6:52 pm

2 stops15h 32m

$512

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Tue 4/7

9:15 pm-12:40 pm

1 stop32h 25m

San Sebastián

Thu 4/23

1:25 pm-1:50 pm

1 stop31h 25m

$874

ChicagoSan Sebastian

ORD - EAS

ORDEAS

Chicago O'Hare Intl

Tue 4/21

9:15 pm-12:40 pm

1 stop32h 25m

San Sebastián

Thu 5/7

1:25 pm-1:50 pm

1 stop31h 25m

$949

Los AngelesSan Sebastian

LAX - EAS

LAXEAS

Los Angeles

Sat 4/25

8:55 pm-8:20 am

1 stop26h 25m

San Sebastián

Tue 5/5

5:55 pm-6:10 pm

1 stop33h 15m

$952

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Sebastian from

How to get the cheapest flight ticket from United States to San Sebastian

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Sebastian?

The month of February is, on average, the cheapest month to fly to San Sebastian from United States, with most prices found around $672. If you are unable to visit San Sebastian during the month of February, then departing from United States during the month October is also very affordable. Most momondo users find prices during this month for around $681.

What is the cheapest day to depart on your flight to San Sebastian?

On average, the least expensive day to fly to San Sebastian from United States is on a Sunday. momondo users have found tickets for Sunday departures for as low as $868. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from United States to San Sebastian for around $1,163.

What is the cheapest time of day to depart on your flight to San Sebastian?

Flying to San Sebastian from United States in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $918 when looking at flights departing in the afternoon. Flights to San Sebastian are more costly in the evening, with an average ticket price of $993. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on United States to San Sebastian flights?

You could potentially save up to 20% on your flight if you consider stops on a United States to San Sebastian flight.

Cheap United States to San Sebastian flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to San Sebastian

Direct flights

None
There are no direct flights from United States to San Sebastian. There are no popular flight routes from United States to San Sebastian.
Search flight deals

  • When did momondo last update prices for flights from United States to San Sebastián Airport?

    Prices for flights from United States to San Sebastián Airport are updated daily.

  • How many operators does momondo search for flights from United States to San Sebastián Airport?

  • How old do you have to be to fly from United States to San Sebastián Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to San Sebastián Airport.

  • What documentation or ID do you need to fly to San Sebastián Airport?

    The required travel and health documents for your San Sebastián Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Sebastián Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from United States to San Sebastian

Compare and see reviews for airlines that fly from United States to San Sebastian with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $450Free CancellationRating
7.2
11,034 reviews
Search American Airlines flights
IberiaPriceFrom $461Free CancellationRating
7.0
3,004 reviews
Search Iberia flights

Traveling to a place near San Sebastian?

Book flights to San Sebastian if you plan to visit one of these locations
Irun
Hondarribia

Why use momondo?

Why should I use momondo to find a flight deal from United States to San Sebastian?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Sebastian from United States.

Can I find flights from United States to San Sebastian with flexible booking policies on momondo?

Yes. All flights to San Sebastian from United States on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from United States to San Sebastian?

Once you have performed a search for United States to San Sebastian flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from United States to San Sebastian right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of United States to San Sebastian flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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