S$398 Cheap Flights from Seattle to Oslo

View S$398 flight on Sun, 18 Jan, 2026Opens in a new window

Popular airlines from Seattle to Oslo (OSL-Gardermoen)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seattle to Oslo (SEA-OSL)

Prices were available within the past 7 days and start at S$398 for one-way flights and S$679 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, 20 Jan - Sat, 24 Jan
SEA
Seattle
OSL
Oslo
S$679 Return, found 13 hours ago
S$679
Return
found 13 hours ago
Select United flight, departing Tue, 20 Jan from Seattle to Oslo, returning Sat, 24 Jan, priced at S$679 found 13 hours ago
United
Tue, 20 Jan - Sat, 24 Jan
SEA
Seattle
OSL
Oslo
S$679 Return, found 13 hours ago
S$679
Return
found 13 hours ago
Select United flight, departing Tue, 20 Jan from Seattle to Oslo, returning Sat, 24 Jan, priced at S$679 found 13 hours ago
United
Sun, 18 Jan - Sun, 1 Feb
SEA
Seattle
OSL
Oslo
S$681 Return, found 5 hours ago
S$681
Return
found 5 hours ago
Select United flight, departing Sun, 18 Jan from Seattle to Oslo, returning Sun, 1 Feb, priced at S$681 found 5 hours ago
United
Tue, 20 Jan - Sat, 24 Jan
SEA
Seattle
OSL
Oslo
S$682 Return, found 13 hours ago
S$682
Return
found 13 hours ago
Select United flight, departing Tue, 20 Jan from Seattle to Oslo, returning Sat, 24 Jan, priced at S$682 found 13 hours ago
United
Sun, 18 Jan - Sun, 1 Feb
SEA
Seattle
OSL
Oslo
S$696 Return, found 5 hours ago
S$696
Return
found 5 hours ago
Select United flight, departing Sun, 18 Jan from Seattle to Oslo, returning Sun, 1 Feb, priced at S$696 found 5 hours ago
Lufthansa
Tue, 20 Jan - Sat, 24 Jan
SEA
Seattle
OSL
Oslo
S$699 Return, found 13 hours ago
S$699
Return
found 13 hours ago
Select Lufthansa flight, departing Tue, 20 Jan from Seattle to Oslo, returning Sat, 24 Jan, priced at S$699 found 13 hours ago
United
Tue, 20 Jan - Sat, 24 Jan
SEA
Seattle
OSL
Oslo
S$706 Return, found 13 hours ago
S$706
Return
found 13 hours ago
Select United flight, departing Tue, 20 Jan from Seattle to Oslo, returning Sat, 24 Jan, priced at S$706 found 13 hours ago
Brussels Airlines
Sun, 18 Jan - Sun, 1 Feb
SEA
Seattle
OSL
Oslo
S$728 Return, found 5 hours ago
S$728
Return
found 5 hours ago
Select Brussels Airlines flight, departing Sun, 18 Jan from Seattle to Oslo, returning Sun, 1 Feb, priced at S$728 found 5 hours ago
Air France
Sun, 18 Jan - Sun, 1 Feb
SEA
Seattle
OSL
Oslo
S$775 Return, found 5 hours ago
S$775
Return
found 5 hours ago
Select Air France flight, departing Sun, 18 Jan from Seattle to Oslo, returning Sun, 1 Feb, priced at S$775 found 5 hours ago
Delta
Tue, 20 Jan - Sat, 24 Jan
SEA
Seattle
OSL
Oslo
S$779 Return, found 13 hours ago
S$779
Return
found 13 hours ago
Select Delta flight, departing Tue, 20 Jan from Seattle to Oslo, returning Sat, 24 Jan, priced at S$779 found 13 hours ago

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

November is typically the cheapest month to fly

From S$539 - S$1,138 per traveller.
Seattle to Oslo route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Gardermoen
Airlines serving
Air France, American Airlines, British Airways, Brussels Airlines, Finnair, KLM, Lufthansa, Scandinavian Airlines, Turkish Airlines, United
Return price
S$678
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$679. 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.

Explore a world of travel with Expedia

*Available to Expedia members.