$782 Cheap Flights from Oslo (OSL) to Santa Rosa (STS)

View $782 flight on Sun, Sep 21, 2025Opens in a new window

Popular airlines from Gardermoen Airport (OSL) to Santa Rosa, CA (STS-Sonoma County)

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Cheap Flights from Oslo to Santa Rosa (OSL-STS)

Prices were available within the past 7 days and start at $782 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Oslo (OSL) to Santa Rosa (STS)
Origin airport
Gardermoen
Destination airport
Sonoma County
Distance
5133 mi

Oslo to Santa Rosa Flights

The cheapest times to fly from Oslo to Santa Rosa

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

 

The best time to book a flight from Oslo to Santa Rosa

Sunday is one of the best days to book for cheap flights from Oslo to Santa Rosa: 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 Santa Rosa

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 Santa Rosa in 2025. You can also book with separate airlines for your outbound and return journeys, from $782 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 Santa Rosa 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 Santa Rosa 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 Sonoma County Airport (STS) cost?
Secure a cheap one-way flight from $782 or cheap return flight from Gardermoen Airport (OSL) to Sonoma County Airport (STS) 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 Gardermoen Airport (OSL) to Sonoma County Airport (STS)?
is the most affordable month to fly from OSL to STS. Traveling outside of peak seasons is often the key to better flight prices.
What is the cheapest airline that flies from Gardermoen Airport (OSL) to Sonoma County Airport (STS)?
To find the cheapest airline that'll fly you from OSL to STS, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Gardermoen Airport (OSL) to Sonoma County Airport (STS)?
There are no daily direct flights from Gardermoen Airport (OSL) to Sonoma County Airport (STS). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from OSL to STS?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be 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 Gardermoen Airport (OSL) to Sonoma County Airport (STS)?
Opt for a flight from Gardermoen Airport (OSL) to Sonoma County Airport (STS) that leaves before 3 PM to reduce the risk of cancellations. Later departures 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 Gardermoen Airport (OSL) to Sonoma County Airport (STS) last-minute?
Waiting until just before your trip to book your flight from OSL to STS generally means paying more. Although you may find some last-minute discounts, they're not always guaranteed. Be flexible with your travel plans for a better chance of getting a bargain.
Is it cheaper to book an OSL to STS flight and hotel package?
Booking an OSL to STS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our wide range of hotels and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Gardermoen Airport (OSL) to Sonoma County Airport (STS)?
Typically, it's possible to reschedule or cancel your OSL to STS flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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