Cheap flights from Boston to San Sebastian from $309
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to San Sebastian departing on 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites 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.Find the cheapest flights from Boston to San Sebastian
Cheap round-trip flights
Cheap one-way flights
Iberia flights from Boston to San Sebastian
Our best Iberia deals on Boston to San Sebastian flight tickets
American Airlines flights from Boston to San Sebastian
Our best American Airlines deals on Boston to San Sebastian flight tickets
See travel insights to San Sebastian from
How to get the cheapest flight ticket from Boston 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 day to depart on your flight to San Sebastian?
On average, the least expensive day to fly to San Sebastian from Boston is on a Thursday. momondo users have found tickets for Thursday departures for as low as $649. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Boston to San Sebastian for around $1,316.
What is the cheapest time of day to depart on your flight to San Sebastian?
Flying to San Sebastian from Boston in the morning is the least expensive time of day to depart. momondo users have found prices as low as $822 when looking at flights departing in the morning. Flights to San Sebastian are more costly in the evening, with an average ticket price of $986. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest airline that flies from Boston Logan Intl to San Sebastián?
Vueling, Iberia, and American Airlines are the most popular carriers operating from Boston Logan Intl to San Sebastián
What airlines fly to San Sebastian?
Iberia, KLM and Delta are the top three most popular airlines that fly to San Sebastian from Boston according to our data. Iberia is the first choice among our users, with 66% of people opting to fly with this airline when traveling to San Sebastian. Keep in mind that there are 10 different airlines that fly to San Sebastian on a routine basis, so you have a few additional options to choose from.
When to book flights from Boston to San Sebastian
Cheap Boston to San Sebastian (BOS to EAS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Boston to San Sebastian
How far is Boston Logan Intl to San Sebastián by plane?
The straight-line distance from Boston Logan Intl to San Sebastián is 3393.2 mi. Flights usually cover this in 9h 40m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Boston Logan Intl Airport to San Sebastián Airport?
Prices for flights from Boston Logan Intl Airport to San Sebastián Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Boston Logan Intl Airport to San Sebastián Airport?
As of March 2025, there are 2 operators available to choose from for flights from Boston Logan Intl Airport to San Sebastián Airport.
How old do you have to be to fly from Boston Logan Intl Airport to San Sebastián Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to San Sebastián Airport.
What documentation or ID do you need to fly to San Sebastián Airport?
The necessary travel and health documents for your San Sebastián Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Boston to San Sebastian?
momondo data reveals that the most frequently booked airline on the route from Boston to San Sebastian is Iberia, representing 84% of all bookings. The subsequent popular airline is American Airlines at 16%.
Best airlines flying from Boston to San Sebastian
Compare and see reviews for airlines that fly from Boston to San Sebastian with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $603 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $639 | Free Cancellation | Rating 7.0 2,651 reviews |
Traveling to a place near San Sebastian?
Book flights to San Sebastian if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Boston to San Sebastian?
Finding the right flight to San Sebastian from Boston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Sebastian quick and easy, saving you time and money.
Can I find flights from Boston to San Sebastian with flexible booking policies on momondo?
All flight searches from Boston to San Sebastian on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Boston to San Sebastian?
Once all potential Boston to San Sebastian flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Boston to San Sebastian right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Boston to San Sebastian flights. All you need is a valid email address and we will do the rest; it is that quick and easy.