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Cheap flights from Oslo Gardermoen Airport to Seattle from £316

OSL — SEA
20 Oct — 27 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Oslo Gardermoen to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Oslo Gardermoen to Seattle

Wed 9/1213:10 -
1 stop12h 50m
Sun 13/1214:35 -
1 stop12h 00m
Deal found 15/9£421
Mon 19/1012:50 -
2 stops20h 46m
Tue 3/1113:35 -
2 stops21h 30m
Deal found 18/9£446
Wed 9/1211:55 -
1 stop32h 30m
Sun 13/1206:14 -
2 stops31h 26m
Deal found 18/9£446
Mon 19/1012:50 -
2 stops20h 46m
Tue 3/1113:35 -
2 stops21h 30m
Deal found 19/9£447
Mon 26/1012:30 -
2 stops29h 01m
Sun 8/1113:35 -
2 stops21h 30m
Deal found 16/9£449
Thu 15/1020:05 -
1 stop24h 30m
Thu 22/1007:30 -
2 stops18h 25m
Deal found 16/9£449
Mon 5/1020:30 -
2 stops32h 14m
Sun 18/1013:37 -
2 stops17h 58m
Deal found 15/9£450

Find flight deals from Oslo Gardermoen to Seattle

Round-trip from

£421

One-way from

£316

Popular in

December

Cheapest in

April

Average price

£437
Icelandair
  • Icelandair
  • 9/12-13/12
  • 2 total stops
  • 24h 50m total
  • Oslo to Seattle
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Delta
  • Delta
  • 14/11-31/12
  • 1 total stop
  • 14h 42m total
  • Oslo to Seattle
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£4 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Oslo Gardermoen Airport to Seattle that are best for you.

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Depart

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Price

Cheapest return flight

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Tue 16/2

06:05-11:47

1 stop14h 42m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£316

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Tue 16/2

18:55-11:47

1 stop25h 52m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£316

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sat 14/11

09:35-16:53

2 stops16h 18m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£317
Fastest return journey

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Thu 4/3

06:05-11:35

1 stop14h 30m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£318

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Wed 9/12

13:10-17:00

1 stop12h 50m

Seattle/Tacoma Intl

Sun 13/12

14:35-11:35

1 stop12h 00m

£441

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 19/10

12:50-00:36

2 stops20h 46m

Seattle/Tacoma Intl

Tue 3/11

13:35-20:05

2 stops21h 30m

£447

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 26/10

12:30-09:31

2 stops29h 01m

Seattle/Tacoma Intl

Sun 8/11

13:35-20:05

2 stops21h 30m

£449

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 26/10

11:55-12:25

1 stop32h 30m

Seattle/Tacoma Intl

Sun 8/11

14:07-11:00

2 stops35h 53m

£449

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 19/10

12:50-00:36

2 stops20h 46m

Seattle/Tacoma Intl

Mon 2/11

07:30-20:05

2 stops27h 35m

£449

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 19/10

12:50-00:36

2 stops20h 46m

Seattle/Tacoma Intl

Tue 3/11

13:35-20:05

2 stops21h 30m

£449

Flights are sorted by cheapest return flights first.

Deals found on 18/9

Showing 1-10 of 14 resultsSorted by cheapest first
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Best time to book a flight from Oslo Gardermoen to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Oslo Gardermoen with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Oslo Gardermoen Airport to Seattle

How far ahead should I book a flight from Oslo Gardermoen Airport to Seattle?

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from Oslo Gardermoen Airport to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Oslo Gardermoen Airport to Seattle?

Currently, April is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of £412). Flying from Oslo Gardermoen Airport to Seattle in December is currently the most expensive (average of £629). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Oslo Gardermoen Airport to Seattle?

Airfare is typical for this route at the moment.

Oslo Gardermoen Airport to Seattle flights typically cost between £387 and £503 in December.
The cheapest return price found within the last 5 days was £421 on Icelandair (9 Dec–13 Dec).

Related info for your journey

  • What airport do you fly into for flights to Seattle from Oslo Gardermoen?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Oslo Gardermoen to Seattle. 0 airlines have flights to Seattle/Tacoma Intl from Oslo Gardermoen on a regular basis. Booking flights from Oslo Gardermoen to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from Oslo Gardermoen per day.

  • How long is the flight from Oslo Gardermoen Airport to Seattle?

    For as low as £421, Icelandair can have you in Seattle from Oslo Gardermoen Airport in 12h 50m. Airlines will cover a distance of 4551 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Oslo Gardermoen to Seattle that include hotel bookings?

    Yes. In addition to deals on Oslo Gardermoen to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Oslo Gardermoen to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oslo Gardermoen to Seattle.

  • Can I find deals for business class flights from Oslo Gardermoen to Seattle?

    Yes. Cheapflights offers flight deals from Oslo Gardermoen to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Oslo Gardermoen Airport to Seattle?

    Currently, April is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of £412). Flying from Oslo Gardermoen Airport to Seattle in December is currently the most expensive (average of £629). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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