CA $754 Cheap Flights from Oslo (OSL) to Seattle (SEA)

View CA $754 flight on Mon, Dec. 22, 2025Opens in a new window

Popular airlines from Gardermoen Airport (OSL) to Seattle-Tacoma International Airport (SEA)

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Cheap flights from Oslo (OSL) to Seattle (SEA)

Prices were available within the past 7 days and start at CA $754 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Oslo (OSL) to Seattle (SEA)

May is typically the cheapest month to fly

From CA $535 - CA $1,099 per traveller.

Graph displaying average flight prices per month

Flight from Oslo to Seattle (OSL - SEA) route information
Origin airport
Gardermoen
Destination airport
Seattle - Tacoma Intl.
Distance
7285 km

Oslo to Seattle Flights

The easy way to book your flights from Oslo to Seattle 

With Expedia, it’s simple to find and book flights to Seattle from Oslo whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Seattle - Tacoma Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Oslo to Seattle today, tomorrow, or this week.  

 

Save dollars with cheap flights from Gardermoen, OSL to Seattle - Tacoma Intl., SEA 

Sort your search results by price to find great deals on your flight from Oslo to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Oslo currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Seattle  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Seattle from Oslo 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Seattle with Expedia today.

Frequently asked questions

How much is a flight from OSL to Sea-Tac Airport?
If you're travelling between Gardermoen Airport (OSL) and Sea-Tac Airport, round-trip journeys start from . This figure is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don't let a good deal pass you by. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Gardermoen Airport (OSL) to Seattle - Tacoma Intl. Airport (SEA)?
Every air carrier has a different set of terms and conditions. If you decide to cancel your vacation, head to our Customer Service Portal.
How do I find cheap flights from Gardermoen Airport (OSL) to Sea-Tac Airport that have flexible change policies?
Many carriers will allow you to reschedule your flight without charging a fee. All you pay is the cost difference between the two flights. When looking for Gardermoen Airport (OSL) to Sea-Tac Airport flights, you'll see a "No change fees" box for you to pick.
How many hours is the flight from Oslo Gardermoen Airport to Sea-Tac Airport?
To comfortably while away the 14 hours and 48 minutes flight time between Oslo Gardermoen Airport and Sea-Tac Airport, it's smart to have a solid plan. A tablet filled with your favourite playlists is a great start.
How far is the flight from OSL to Seattle - Tacoma Intl. Airport (SEA)?
The distance is around 7,300 kilometres. Neck pillow? Check. Toiletries? Check. We recommend you pack all the travel comforts for this long-haul Ullensaker to SeaTac flight.
Which airlines fly direct from OSL to Seattle - Tacoma Intl. Airport (SEA)?
Flying nonstop between Oslo Gardermoen Airport and Seattle - Tacoma Intl. Airport (SEA) isn't possible at the moment. However, you'll still be able to book a flight to SeaTac with at least one stop.
Are Gardermoen Airport (OSL) to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to score an amazing last-minute deal from Oslo Gardermoen Airport to SEA, but it's also possible to miss out altogether! As many airlines publish prices up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to book when you spot a good bargain. Expedia compares carrier prices and updates flight deals often, so you can be certain you're always seeing the latest offers.

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