$474 Cheap Flights from San Sebastian (EAS) to Reykjavik (KEF)

View $474 flight on Wed, Sep 10, 2025Opens in a new window

Popular airlines from San Sebastian (EAS) to Reykjavik–Keflavik Intl. Airport (KEF)

Cheap Flights from San Sebastian to Reykjavik (EAS-KEF)

Prices were available within the past 7 days and start at $474 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from San Sebastian (EAS) to Reykjavik (KEF)
Origin airport
San Sebastian
Destination airport
Keflavik Intl.
Distance
1644 mi

San Sebastian to Reykjavik Flights

The cheapest times to fly from San Sebastian to Reykjavik

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

 

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

Sunday is one of the best days to book for cheap flights from San Sebastian to Reykjavik: 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 San Sebastian to Reykjavik

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 San Sebastian to Reykjavik in 2025. You can also book with separate airlines for your outbound and return journeys, from $474 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 San Sebastian to Reykjavik 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 San Sebastian to Reykjavik 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.

 

Frequently asked questions

How much does a flight from San Sebastian Airport (EAS) to Keflavik Intl. Airport (KEF) cost?
Snag a cheap one-way flight from $474 or cheap return flight from San Sebastian Airport (EAS) to Keflavik Intl. Airport (KEF) 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 San Sebastian Airport (EAS) to Keflavik Intl. Airport (KEF)?
is the cheapest month to fly from EAS to KEF. Traveling outside of peak seasons is often the key to finding better fares.
What is the cheapest airline that flies from San Sebastian Airport (EAS) to Keflavik Intl. Airport (KEF)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest EAS to KEF flight.
How many flights per day from San Sebastian Airport (EAS) to Keflavik Intl. Airport (KEF)?
You'll need to hop on a flight with a layover if you're traveling from San Sebastian Airport (EAS) to Keflavik Intl. Airport (KEF). Direct flights don't operate daily on this route. However, just 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 EAS to KEF?
You'll usually find Tuesday the quietest day for flights, while Fridays are often 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 San Sebastian Airport (EAS) to Keflavik Intl. Airport (KEF)?
Choose a flight from San Sebastian Airport (EAS) to Keflavik Intl. Airport (KEF) that takes off before 3 PM to reduce the risk of delays and cancellations. 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 San Sebastian Airport (EAS) to Keflavik Intl. Airport (KEF) last-minute?
Last-minute fares from EAS to KEF are typically more expensive. To lock in the lowest prices, start looking for flights ahead of time. That being said, if you're flexible with your travel plans, you may find a cheap fare right before your trip.
Is it cheaper to book an EAS to KEF flight and hotel package?
Compared with arranging hotels and flights separately, booking an EAS to KEF flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place will take the stress out of travel planning. Just secure your flights and select from our extensive range of hotels, then personalize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from San Sebastian Airport (EAS) to Keflavik Intl. Airport (KEF)?
If you reserved your EAS to KEF flight in 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 this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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*Available to One Key members.