$374 Cheap Flights from Santander (SDR) to Reykjavik (KEF)

View $374 flight on Fri, Mar 13, 2026Opens in a new window

Popular airlines from Santander (SDR) to Reykjavik–Keflavik Intl. Airport (KEF)

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Cheap Flights from Santander to Reykjavik (SDR-KEF)

Prices were available within the past 7 days and start at $374 for one-way flights and $1,174 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Finnair
Fri, Mar 13 - Mon, Mar 23
SDR
Santander
KEF
Reykjavik
$1,174 Roundtrip, found 2 days ago
$1,174
Roundtrip
found 2 days ago
Select Finnair flight, departing Fri, Mar 13 from Santander to Reykjavik, returning Mon, Mar 23, priced at $1,174 found 2 days ago
Finnair
Fri, Mar 13 - Mon, Mar 23
SDR
Santander
KEF
Reykjavik
$1,183 Roundtrip, found 2 days ago
$1,183
Roundtrip
found 2 days ago
Select Finnair flight, departing Fri, Mar 13 from Santander to Reykjavik, returning Mon, Mar 23, priced at $1,183 found 2 days ago
Finnair
Fri, Mar 13 - Mon, Mar 23
SDR
Santander
KEF
Reykjavik
$1,378 Roundtrip, found 2 days ago
$1,378
Roundtrip
found 2 days ago
Select Finnair flight, departing Fri, Mar 13 from Santander to Reykjavik, returning Mon, Mar 23, priced at $1,378 found 2 days ago
Finnair
Fri, Mar 13 - Mon, Mar 23
SDR
Santander
KEF
Reykjavik
$1,391 Roundtrip, found 2 days ago
$1,391
Roundtrip
found 2 days ago
Select Finnair flight, departing Fri, Mar 13 from Santander to Reykjavik, returning Mon, Mar 23, priced at $1,391 found 2 days ago
Flights from Santander (SDR) to Reykjavik (KEF)
Origin airport
Santander
Destination airport
Keflavik Intl.
Roundtrip price
$1,174
Distance
1601 mi

Santander to Reykjavik Flights

The cheapest times to fly from Santander 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 Santander to Reykjavik are during the month of March. You can find some of the cheapest flights from Santander to Reykjavik with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Santander to Reykjavik

Sunday is one of the best days to book for cheap flights from Santander 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 Santander 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 Santander to Reykjavik in 2025. You can also book with separate airlines for your outbound and return journeys, from $374 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 Santander 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 Santander 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 Santander Airport (SDR) to Keflavik Intl. Airport (KEF) cost?
Grab a cheap one-way flight from $374 or cheap return flight from $1,174 from Santander Airport (SDR) to Keflavik Intl. Airport (KEF) 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 Santander Airport (SDR) to Keflavik Intl. Airport (KEF)?
Planning your trip for March can help you save, as it's the cheapest month for flights between SDR and KEF. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Santander Airport (SDR) to Keflavik Intl. Airport (KEF)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from SDR to KEF. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Santander Airport (SDR) to Keflavik Intl. Airport (KEF)?
Direct flights from Santander Airport (SDR) to Keflavik Intl. Airport (KEF) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SDR to KEF?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on various factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Santander Airport (SDR) to Keflavik Intl. Airport (KEF)?
Select a flight from Santander Airport (SDR) to Keflavik Intl. Airport (KEF) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures after this hour are on average 22% more likely to be canceled.**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 Santander Airport (SDR) to Keflavik Intl. Airport (KEF) last-minute?
Holding off until just before your trip to book your flight from SDR to KEF often results in higher prices. While you may come across some last-minute offers, there's no guarantee. Allow some flexibility in your schedule to boost your chances of landing a bargain.
Is it cheaper to book a SDR to KEF flight and hotel package?
You can save money by booking a SDR to KEF flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After selecting your preferred flights and accommodations, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Santander Airport (SDR) to Keflavik Intl. Airport (KEF)?
If you reserved your SDR to KEF flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

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*Available to One Key members.