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Cheap flights from Oslo Gardermoen Airport to Seattle from £233

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
13 Feb — 20 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Oslo Gardermoen to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Oslo Gardermoen (OSL) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 14 January 2026.

Round-trip from

£295

One-way from

£233

Popular in

March

Cheapest in

May

Average price

£415
Icelandair
  • Icelandair
  • 22/4-26/4
  • 2 total stops
  • 27h 45m total
  • Oslo to Seattle
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12/3
  • 12/3
  • 2 total stops
  • 22h 51m total
  • Oslo to Seattle
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£9 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Oslo Gardermoen to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Oslo Gardermoen to Seattle
Explore the most affordable flight options available from Oslo Gardermoen to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 January 2026.

Wed 22/413:50
OSL
-
SEA
1 stop15h 50m
Icelandair
Sun 26/415:40
SEA
-
OSL
1 stop11h 55m
Icelandair
Deal found 11/1£295
Wed 22/407:45
OSL
-
SEA
1 stop19h 40m
British Airways
Sun 26/411:16
SEA
-
OSL
2 stops38h 14m
British Airways
Deal found 13/1£368
Sun 1/206:30
OSL
-
SEA
2 stops20h 53m
Delta
Sun 15/206:10
SEA
-
OSL
2 stops20h 40m
Delta
Deal found 12/1£372
Sun 1/207:20
OSL
-
SEA
2 stops23h 47m
British Airways
Mon 16/207:15
SEA
-
OSL
2 stops30h 25m
British Airways
Deal found 13/1£373
Sun 1/209:35
OSL
-
SEA
2 stops22h 08m
United Airlines
Sun 15/212:12
SEA
-
OSL
3 stops42h 08m
United Airlines
Deal found 12/1£404
Sun 1/213:50
OSL
-
SEA
1 stop31h 20m
United Airlines
Mon 16/214:00
SEA
-
OSL
1 stop16h 20m
United Airlines
Deal found 14/1£413
Sun 1/212:40
OSL
-
SEA
1 stop32h 00m
Delta
Mon 16/214:15
SEA
-
OSL
1 stop17h 05m
Delta
Deal found 13/1£454
Sun 14/606:30
OSL
-
SEA
2 stops21h 22m
Delta
Sun 28/609:30
SEA
-
OSL
2 stops19h 10m
Delta
Deal found 12/1£510
Fri 27/206:15
OSL
-
SEA
3 stops23h 46m
United Airlines
Fri 6/314:00
SEA
-
OSL
2 stops18h 40m
United Airlines
Deal found 13/1£517

Cheapflights Fare Finder

 
Customise your flight search to find flights from Oslo Gardermoen to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 14 January 2026.
Use the filters below to find and compare flights from Oslo Gardermoen Airport to Seattle that are best for you.

Fly from

Oslo Gardermoen

Fly to

Seattle

Route

Depart

Return

Price

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 22/4

13:50-20:40

1 stop15h 50m

Seattle/Tacoma Intl

Sun 26/4

15:40-12:35

1 stop11h 55m

£295

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 22/4

07:45-18:25

1 stop19h 40m

Seattle/Tacoma Intl

Sun 26/4

11:16-10:30

2 stops38h 14m

£368

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 1/2

06:30-18:23

2 stops20h 53m

Seattle/Tacoma Intl

Sun 15/2

06:10-11:50

2 stops20h 40m

£372

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 1/2

07:20-22:07

2 stops23h 47m

Seattle/Tacoma Intl

Mon 16/2

07:15-22:40

2 stops30h 25m

£373

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 1/2

09:35-22:43

2 stops22h 08m

Seattle/Tacoma Intl

Sun 15/2

12:12-15:20

3 stops42h 08m

£404

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 1/2

13:50-12:10

1 stop31h 20m

Seattle/Tacoma Intl

Mon 16/2

14:00-15:20

1 stop16h 20m

£413

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 1/2

12:40-11:40

1 stop32h 00m

Seattle/Tacoma Intl

Mon 16/2

14:15-16:20

1 stop17h 05m

£454

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 14/6

06:30-18:52

2 stops21h 22m

Seattle/Tacoma Intl

Sun 28/6

09:30-13:40

2 stops19h 10m

£510

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 12/3

06:25-21:16

2 stops22h 51m

£233

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 17/6

11:35-11:35

1 stop33h 00m

£273

Flights are sorted by cheapest return flights first.

Deals found on 12/1

Showing 1-10 of 20 results
1
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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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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?

Use this chart to determine the optimal time to book a return flight from Oslo Gardermoen to Seattle. Price data was last updated on 9 January 2026.

Booking 61 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, February is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of £267). Flying from Oslo Gardermoen Airport to Seattle in July is currently the most expensive (average of £380). 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.

Related info for your journey

Find useful and relevant information for your journey from Oslo Gardermoen to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 £295, Icelandair can have you in Seattle from Oslo Gardermoen Airport in 15h 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, February is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of £267). Flying from Oslo Gardermoen Airport to Seattle in July is currently the most expensive (average of £380). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac

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Why should you use Cheapflights to find cheap flight tickets from Oslo Gardermoen to Seattle?

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