Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from the United States to San Sebastian from $343

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 1/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
9:20 pm - 8:50 pm
BOS
-
EAS
17h 30m1 stop
Iberia Logo
2:05 pm - 8:55 pm
EAS
-
BOS
12h 50m1 stop
$446Iberia
Sun, Jan 11 - Tue, Jan 27
Multiple Airlines Logo
11:14 am - 8:40 am
BOS
-
EAS
15h 26m2 stops
Multiple Airlines Logo
9:20 am - 3:15 pm
EAS
-
BOS
11h 55m1 stop
$449Multiple Airlines
Sun, Jan 11 - Tue, Jan 27
American Airlines Logo
4:45 pm - 8:40 am
BOS
-
EAS
9h 55m1 stop
American Airlines Logo
9:30 pm - 3:15 pm
EAS
-
BOS
23h 45m1 stop
$459American Airlines
Mon, Feb 2 - Mon, Feb 9
American Airlines Logo
9:45 am - 8:40 am
BOS
-
EAS
16h 55m2 stops
American Airlines Logo
9:30 pm - 3:15 pm
EAS
-
BOS
23h 45m1 stop
$462American Airlines
Mon, Feb 2 - Mon, Feb 9
Iberia Logo
9:20 pm - 8:50 pm
BOS
-
EAS
17h 30m1 stop
Iberia Logo
1:40 pm - 7:50 pm
EAS
-
BOS
12h 10m1 stop
$498Iberia
Fri, Jan 30 - Fri, Feb 6
American Airlines Logo
9:20 pm - 8:50 pm
BOS
-
EAS
17h 30m1 stop
American Airlines Logo
1:40 pm - 10:56 pm
EAS
-
BOS
15h 16m2 stops
$508American Airlines
Fri, Jan 30 - Fri, Feb 6
Multiple Airlines Logo
11:45 pm - 1:30 pm
JFK
-
EAS
31h 45m1 stop
Multiple Airlines Logo
2:05 pm - 10:00 pm
EAS
-
JFK
13h 55m1 stop
$509Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
American Airlines Logo
3:35 pm - 8:50 pm
BOS
-
EAS
23h 15m2 stops
American Airlines Logo
1:40 pm - 10:56 pm
EAS
-
BOS
15h 16m2 stops
$512American Airlines
Fri, Jan 30 - Fri, Feb 6
Iberia Logo
10:40 pm - 8:50 pm
BOS
-
EAS
16h 10m2 stops
Iberia Logo
9:20 am - 10:56 pm
EAS
-
BOS
19h 36m2 stops
$524Iberia
Mon, Feb 2 - Mon, Feb 9
Multiple Airlines Logo
11:55 pm - 8:40 am
EWR
-
EAS
26h 45m2 stops
Multiple Airlines Logo
9:30 pm - 3:30 pm
EAS
-
EWR
48h 00m2 stops
$571Multiple Airlines
Fri, Jan 16 - Mon, Jan 19

Iberia flights from United States to San Sebastian

Our best Iberia deals on United States to San Sebastian flight tickets
Iberia
Jan 11
BOS9:20 pmBoston Logan Intl
17h 30m
1 stop
EAS8:50 pmSan Sebastián
Jan 27
EAS2:05 pmSan Sebastián
12h 50m
1 stop
BOS8:55 pmBoston Logan Intl
$446
Find similar
Iberia
Jan 30
BOS9:20 pmBoston Logan Intl
17h 30m
1 stop
EAS8:50 pmSan Sebastián
Feb 6
EAS1:40 pmSan Sebastián
12h 10m
1 stop
BOS7:50 pmBoston Logan Intl
$498
Find similar
Iberia
Feb 2
BOS10:40 pmBoston Logan Intl
16h 10m
2 stops
EAS8:50 pmSan Sebastián
Feb 9
EAS9:20 amSan Sebastián
19h 36m
2 stops
BOS10:56 pmBoston Logan Intl
$524
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
Feb 2
BOS4:45 pmBoston Logan Intl
9h 55m
1 stop
EAS8:40 amSan Sebastián
Feb 9
EAS9:30 pmSan Sebastián
23h 45m
1 stop
BOS3:15 pmBoston Logan Intl
$459
Find similar
American Airlines
Feb 2
BOS9:45 amBoston Logan Intl
16h 55m
2 stops
EAS8:40 amSan Sebastián
Feb 9
EAS9:30 pmSan Sebastián
23h 45m
1 stop
BOS3:15 pmBoston Logan Intl
$462
Find similar
American Airlines
Jan 30
BOS9:20 pmBoston Logan Intl
17h 30m
1 stop
EAS8:50 pmSan Sebastián
Feb 6
EAS1:40 pmSan Sebastián
15h 16m
2 stops
BOS10:56 pmBoston Logan Intl
$508
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 December 18, 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

Sun 1/11

9:20 pm-8:50 pm

1 stop17h 30m

San Sebastián

Tue 1/27

2:05 pm-8:55 pm

1 stop12h 50m

$446

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Sun 1/11

11:14 am-8:40 am

2 stops15h 26m

San Sebastián

Tue 1/27

9:20 am-3:15 pm

1 stop11h 55m

$449

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 2/2

4:45 pm-8:40 am

1 stop9h 55m

San Sebastián

Mon 2/9

9:30 pm-3:15 pm

1 stop23h 45m

$459

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 2/2

9:45 am-8:40 am

2 stops16h 55m

San Sebastián

Mon 2/9

9:30 pm-3:15 pm

1 stop23h 45m

$462

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Fri 1/30

9:20 pm-8:50 pm

1 stop17h 30m

San Sebastián

Fri 2/6

1:40 pm-7:50 pm

1 stop12h 10m

$498

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Fri 1/30

9:20 pm-8:50 pm

1 stop17h 30m

San Sebastián

Fri 2/6

1:40 pm-10:56 pm

2 stops15h 16m

$508

New YorkSan Sebastian

JFK - EAS

JFKEAS

New York John F Kennedy Intl

Sat 1/31

11:45 pm-1:30 pm

1 stop31h 45m

San Sebastián

Sat 2/7

2:05 pm-10:00 pm

1 stop13h 55m

$509

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Fri 1/30

3:35 pm-8:50 pm

2 stops23h 15m

San Sebastián

Fri 2/6

1:40 pm-10:56 pm

2 stops15h 16m

$512

BostonSan Sebastian

BOS - EAS

BOSEAS

Boston Logan Intl

Mon 2/2

10:40 pm-8:50 pm

2 stops16h 10m

San Sebastián

Mon 2/9

9:20 am-10:56 pm

2 stops19h 36m

$524

NewarkSan Sebastian

EWR - EAS

EWREAS

Newark

Fri 1/16

11:55 pm-8:40 am

2 stops26h 45m

San Sebastián

Mon 1/19

9:30 pm-3:30 pm

2 stops48h 00m

$571

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

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 November is, on average, the cheapest month to fly to San Sebastian from United States, with most prices found around $639. If you are unable to visit San Sebastian during the month of November, then departing from United States during the month October is also very affordable. Most momondo users find prices during this month for around $643.

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 8% 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

Fastest flight time

11h 05m

Direct flights

None
The fastest flight from United States to San Sebastian takes 11h 05m
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
IberiaPriceFrom $416Free CancellationRating
7.0
3,053 reviews
Search Iberia flights
American AirlinesPriceFrom $450Free CancellationRating
7.2
11,054 reviews
Search American Airlines 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.

An easier way to manage your San Sebastian trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/17
Sat 1/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Spain

Airports servicing Basque Country

Bilbao Airport