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Cheap flights from Oslo Gardermoen Airport to Seattle from £309

OSL — SEA
9 Dec — 16 Dec1
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

Sun 6/1220:50 -
2 stops35h 58m
Sun 13/1205:10 -
2 stops26h 25m
Deal found 7/11£371
Sat 21/1106:05 -
1 stop14h 42m
Tue 24/1113:32 -
2 stops17h 38m
Deal found 7/11£435
Fri 25/1215:10 -
1 stop29h 15m
Sun 10/109:58 -
2 stops40h 02m
Deal found 9/11£470
Sun 6/1206:15 -
1 stop14h 45m
Sun 13/1208:09 -
2 stops30h 31m
Deal found 7/11£537
Mon 21/1218:55 -
1 stop25h 55m
Mon 28/1214:35 -
1 stop18h 35m
Deal found 5/11£564

Find flight deals from Oslo Gardermoen to Seattle

Round-trip from

£342

One-way from

£309

Popular in

December

Cheapest in

October

Average price

£424
Icelandair
  • Icelandair
  • 20/4-24/4
  • 2 total stops
  • 25h 00m total
  • Oslo to Seattle
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Icelandair
  • Icelandair
  • 9/4-31/12
  • 1 total stop
  • 13h 05m total
  • Oslo to Seattle
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£7 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 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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Route

Depart

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Price

Cheapest return flight

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sun 11/4

16:20-20:40

1 stop13h 20m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£309
Fastest return journey

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sun 14/3

13:10-18:00

1 stop12h 50m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£310

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 15/3

13:10-18:00

1 stop12h 50m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£310

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Tue 16/2

06:05-19:19

2 stops22h 14m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£338

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Tue 20/4

13:50-17:55

1 stop13h 05m

Seattle/Tacoma Intl

Sat 24/4

15:40-12:35

1 stop11h 55m

£342

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sun 10/1

14:40-16:50

1 stop35h 10m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£343

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sat 3/4

16:20-20:40

1 stop13h 20m

Seattle/Tacoma Intl

Mon 5/4

15:40-15:20

1 stop14h 40m

£345

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Fri 9/4

06:30-18:30

2 stops21h 00m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£351

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 5/4

06:30-18:38

2 stops21h 08m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£354

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sun 14/3

06:05-17:55

2 stops20h 50m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£356

Flights are sorted by cheapest return flights first.

Deals found on 8/11

Showing 1-10 of 17 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, October is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of £405). Flying from Oslo Gardermoen Airport to Seattle in December is currently the most expensive (average of £645). 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 below average for this route at the moment.

Oslo Gardermoen Airport to Seattle flights typically cost between £409 and £474 in April.
The cheapest return price found within the last 5 days was £342 on Icelandair (20 Apr–24 Apr).

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 £342, Icelandair can have you in Seattle from Oslo Gardermoen Airport in 13h 05m. 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, October is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of £405). Flying from Oslo Gardermoen Airport to Seattle in December is currently the most expensive (average of £645). 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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