$129 Cheap Flights from Oslo (OSL) to San Sebastian (EAS)

View $129 flight on Fri, Aug 15, 2025Opens in a new window

Popular airlines from Gardermoen Airport (OSL) to San Sebastian (EAS)

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Cheap Flights from Oslo to San Sebastian (OSL-EAS)

Prices were available within the past 7 days and start at $129 for one-way flights and $320 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Fri, Aug 15 - Sun, Aug 17
OSL
Oslo
EAS
San Sebastián
$320 Roundtrip, found 17 hours ago
$320
Roundtrip
found 17 hours ago
Select Iberia flight, departing Fri, Aug 15 from Oslo to San Sebastián, returning Sun, Aug 17, priced at $320 found 17 hours ago
Iberia
Thu, Aug 7 - Thu, Aug 28
OSL
Oslo
EAS
San Sebastián
$358 Roundtrip, found 23 hours ago
$358
Roundtrip
found 23 hours ago
Select Iberia flight, departing Thu, Aug 7 from Oslo to San Sebastián, returning Thu, Aug 28, priced at $358 found 23 hours ago
Iberia
Sun, Aug 10 - Thu, Aug 28
OSL
Oslo
EAS
San Sebastián
$367 Roundtrip, found 23 hours ago
$367
Roundtrip
found 23 hours ago
Select Iberia flight, departing Sun, Aug 10 from Oslo to San Sebastián, returning Thu, Aug 28, priced at $367 found 23 hours ago
Iberia
Tue, Aug 5 - Thu, Aug 28
OSL
Oslo
EAS
San Sebastián
$382 Roundtrip, found 23 hours ago
$382
Roundtrip
found 23 hours ago
Select Iberia flight, departing Tue, Aug 5 from Oslo to San Sebastián, returning Thu, Aug 28, priced at $382 found 23 hours ago
Iberia
Fri, Aug 15 - Sun, Aug 17
OSL
Oslo
EAS
San Sebastián
$415 Roundtrip, found 17 hours ago
$415
Roundtrip
found 17 hours ago
Select Iberia flight, departing Fri, Aug 15 from Oslo to San Sebastián, returning Sun, Aug 17, priced at $415 found 17 hours ago
Iberia
Fri, Aug 15 - Sun, Aug 17
OSL
Oslo
EAS
San Sebastián
$440 Roundtrip, found 17 hours ago
$440
Roundtrip
found 17 hours ago
Select Iberia flight, departing Fri, Aug 15 from Oslo to San Sebastián, returning Sun, Aug 17, priced at $440 found 17 hours ago
Iberia
Thu, Aug 14 - Fri, Aug 29
OSL
Oslo
EAS
San Sebastián
$443 Roundtrip, found 23 hours ago
$443
Roundtrip
found 23 hours ago
Select Iberia flight, departing Thu, Aug 14 from Oslo to San Sebastián, returning Fri, Aug 29, priced at $443 found 23 hours ago
Iberia
Fri, Aug 8 - Thu, Aug 28
OSL
Oslo
EAS
San Sebastián
$472 Roundtrip, found 23 hours ago
$472
Roundtrip
found 23 hours ago
Select Iberia flight, departing Fri, Aug 8 from Oslo to San Sebastián, returning Thu, Aug 28, priced at $472 found 23 hours ago
Air Baltic
Tue, Jul 29 - Tue, Aug 19
OSL
Oslo
EAS
San Sebastián
$627 Roundtrip, found 23 hours ago
$627
Roundtrip
found 23 hours ago
Select Air Baltic flight, departing Tue, Jul 29 from Oslo to San Sebastián, returning Tue, Aug 19, priced at $627 found 23 hours ago
Vueling Airlines
Sat, Aug 30 - Mon, Sep 15
OSL
Oslo
EAS
San Sebastián
$792 Roundtrip, found 23 hours ago
$792
Roundtrip
found 23 hours ago
Select Vueling Airlines flight, departing Sat, Aug 30 from Oslo to San Sebastián, returning Mon, Sep 15, priced at $792 found 23 hours ago
Flights from Oslo (OSL) to San Sebastian (EAS)
Origin airport
Gardermoen
Destination airport
San Sebastian
Airlines serving
Air Baltic, Iberia, Vueling Airlines
Roundtrip price
$319
Distance
1281 mi

Oslo to San Sebastian Flights

The cheapest times to fly from Oslo to San Sebastian

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

 

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

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

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 Oslo to San Sebastian in 2025. You can also book with separate airlines for your outbound and return journeys, from $129 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 Oslo to San Sebastian 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 Oslo to San Sebastian 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 Gardermoen Airport (OSL) to San Sebastian Airport (EAS) cost?
Discover the latest flight deals from OSL to EAS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from OSL to EAS?
The cheapest flights from OSL to EAS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from OSL to EAS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from OSL to EAS. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Gardermoen Airport (OSL) to San Sebastian Airport (EAS)?
There aren't any daily direct flights available from Gardermoen Airport (OSL) to San Sebastian Airport (EAS). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from OSL to EAS?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Gardermoen Airport (OSL) to San Sebastian Airport (EAS)?
To avoid potential delays on the Gardermoen Airport (OSL) to San Sebastian Airport (EAS) route, travel before 3 PM. Flights after this time are 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 Gardermoen Airport (OSL) to San Sebastian Airport (EAS) last-minute?
Holding off until just before your trip to book a flight from OSL to EAS generally means paying more. While you may find some last-minute deals, they aren't always guaranteed. Keep your travel plans flexible to boost your chances of getting a bargain.
Is it cheaper to book an OSL to EAS flight and hotel package?
You'll generally save money by booking an OSL to EAS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After choosing your preferred accommodations and flights, you can add extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Gardermoen Airport (OSL) to San Sebastian Airport (EAS)?
Usually, it's possible to reschedule or cancel your OSL to EAS flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.