S$511 Cheap Flights from Seattle to Oslo

View S$511 flight on Wed, 12 Nov, 2025Opens in a new window

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

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Cheap Flights from Seattle to Oslo (SEA-OSL)

Prices were available within the past 7 days and start at S$511 for one-way flights and S$1,140 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Thu, 11 Jun - Fri, 19 Jun
SEA
Seattle
OSL
Oslo
S$1,140 Return, found 4 days ago
S$1,140
Return
found 4 days ago
Select British Airways flight, departing Thu, 11 Jun from Seattle to Oslo, returning Fri, 19 Jun, priced at S$1,140 found 4 days ago
United
Thu, 11 Jun - Fri, 19 Jun
SEA
Seattle
OSL
Oslo
S$1,309 Return, found 4 days ago
S$1,309
Return
found 4 days ago
Select United flight, departing Thu, 11 Jun from Seattle to Oslo, returning Fri, 19 Jun, priced at S$1,309 found 4 days ago
United
Thu, 11 Jun - Fri, 19 Jun
SEA
Seattle
OSL
Oslo
S$1,339 Return, found 4 days ago
S$1,339
Return
found 4 days ago
Select United flight, departing Thu, 11 Jun from Seattle to Oslo, returning Fri, 19 Jun, priced at S$1,339 found 4 days ago
Lufthansa
Thu, 11 Jun - Fri, 19 Jun
SEA
Seattle
OSL
Oslo
S$1,341 Return, found 4 days ago
S$1,341
Return
found 4 days ago
Select Lufthansa flight, departing Thu, 11 Jun from Seattle to Oslo, returning Fri, 19 Jun, priced at S$1,341 found 4 days ago
Lufthansa
Thu, 11 Jun - Fri, 19 Jun
SEA
Seattle
OSL
Oslo
S$1,372 Return, found 4 days ago
S$1,372
Return
found 4 days ago
Select Lufthansa flight, departing Thu, 11 Jun from Seattle to Oslo, returning Fri, 19 Jun, priced at S$1,372 found 4 days ago
American Airlines
Thu, 11 Jun - Fri, 19 Jun
SEA
Seattle
OSL
Oslo
S$1,377 Return, found 4 days ago
S$1,377
Return
found 4 days ago
Select American Airlines flight, departing Thu, 11 Jun from Seattle to Oslo, returning Fri, 19 Jun, priced at S$1,377 found 4 days ago
United
Thu, 11 Jun - Fri, 19 Jun
SEA
Seattle
OSL
Oslo
S$1,381 Return, found 4 days ago
S$1,381
Return
found 4 days ago
Select United flight, departing Thu, 11 Jun from Seattle to Oslo, returning Fri, 19 Jun, priced at S$1,381 found 4 days ago
Air France
Thu, 11 Jun - Fri, 19 Jun
SEA
Seattle
OSL
Oslo
S$1,388 Return, found 4 days ago
S$1,388
Return
found 4 days ago
Select Air France flight, departing Thu, 11 Jun from Seattle to Oslo, returning Fri, 19 Jun, priced at S$1,388 found 4 days ago
British Airways
Thu, 11 Jun - Fri, 19 Jun
SEA
Seattle
OSL
Oslo
S$1,397 Return, found 4 days ago
S$1,397
Return
found 4 days ago
Select British Airways flight, departing Thu, 11 Jun from Seattle to Oslo, returning Fri, 19 Jun, priced at S$1,397 found 4 days ago
Air France
Thu, 11 Jun - Fri, 19 Jun
SEA
Seattle
OSL
Oslo
S$1,466 Return, found 4 days ago
S$1,466
Return
found 4 days ago
Select Air France flight, departing Thu, 11 Jun from Seattle to Oslo, returning Fri, 19 Jun, priced at S$1,466 found 4 days ago

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

November is typically the cheapest month to fly

From S$535 - S$1,558 per traveller.

Graph displaying average flight prices per month

Seattle to Oslo route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Gardermoen
Return price
S$1,139
Distance
7285 km

Flights from Seattle to Oslo

There are several airlines that operate frequent flights from Seattle (SEA) to Oslo (OSL) including

The earliest flight leaves Seattle Tacoma Intl. Airport at 09:15 and arrives at Gardermoen Airport at 05:40. The last flight of the day departs Seattle at 23:25 and arrives at Oslo at 23:10.

The flight distance from Seattle to Oslo is about 8943 km, the shortest flight is 10 hours 35 minutes with Virgin Atlantic.

Expedia lets you search across the largest number of airlines and Oslo flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Seattle Oslo flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Seattle to Oslo trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Oslo flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Seattle to Oslo with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from SEA to Oslo Gardermoen Airport?
Start packing your suitcase, because round-trip flights between SEA and Oslo Gardermoen Airport start from S$1,140. That's based on fares advertised within the last 7 days on Expedia for flights departing within the next year. Prices can go up quickly, so book now to lock in the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seattle - Tacoma Intl. Airport (SEA) to Gardermoen Airport (OSL)?
We understand that life can throw the odd curveball, so we've made it as simple as possible for you to cancel your flight online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from Sea-Tac Airport to OSL that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SEA to Gardermoen Airport (OSL) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sea-Tac Airport to OSL?
SeaTac to Ullensaker is around 7,300 kilometres, so be prepared to spend a while in the air. Make sure you pack all the essentials, from your headphones to your hoodie. Toss in some snacks to nibble on throughout your journey too.
Which airlines fly direct from SEA to OSL?
Flying directly between Seattle - Tacoma Intl. Airport (SEA) and Gardermoen Airport (OSL) isn't possible at this time. However, you'll still be able to book a flight to Ullensaker with at least one stop.
Are SEA to OSL flight tickets cheaper when they're purchased at the last minute?
Booking last minute from SEA to Gardermoen Airport (OSL) can be hit-or-miss. You may be able to score a great bargain, but you could also completely miss out! If you'd rather play it safe and start your travel planning ahead of time, Expedia compares flight deals up to 12 months in advance. Just remember that not all airlines publish their prices so far in advance. Our top tip? Check back often as updates are made frequently.

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