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Cheap flights from Oslo Gardermoen Airport to Seattle from £232

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 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
12 Jan — 19 Jan1
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
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 13 December 2025.

Wed 24/1212:40OSL - SEA
1 stop32h 10mMultiple Airlines
Sun 4/114:10SEA - OSL
1 stop15h 35mMultiple Airlines
Deal found 13/12£721
Wed 24/1213:50OSL - SEA
2 stops30h 37mUnited Airlines
Sun 4/123:59SEA - OSL
2 stops27h 56mUnited Airlines
Deal found 13/12£765
Thu 18/1206:25OSL - SEA
1 stop14h 00mDelta
Tue 30/1213:40SEA - OSL
1 stop17h 40mDelta
Deal found 13/12£776
Mon 22/1209:25OSL - SEA
1 stop35h 25mMultiple Airlines
Sat 3/113:40SEA - OSL
1 stop24h 55mMultiple Airlines
Deal found 12/12£870
Mon 22/1206:15OSL - SEA
1 stop14h 55mUnited Airlines
Sat 3/123:15SEA - OSL
2 stops31h 05mUnited Airlines
Deal found 12/12£1,058
Thu 18/1213:45OSL - SEA
2 stops43h 12mUnited Airlines
Tue 30/1213:35SEA - OSL
3 stops42h 35mUnited Airlines
Deal found 13/12£1,098
Mon 22/1218:45OSL - SEA
4 stops59h 12mEthiopian Air
Sat 3/123:15SEA - OSL
3 stops47h 30mEthiopian Air
Deal found 12/12£3,852

Find 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 13 December 2025.

Round-trip from

£337

One-way from

£232

Popular in

March

Cheapest in

May

Average price

£557
Icelandair
  • Icelandair
  • 27/1-3/2
  • 2 total stops
  • 24h 50m total
  • Oslo to Seattle
Search Deals
Finnair
  • Finnair
  • 23/3
  • 2 total stops
  • 31h 30m total
  • Oslo to Seattle
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (£3 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 13 December 2025.
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

Tue 27/1

13:10-17:00

1 stop12h 50m

Seattle/Tacoma Intl

Tue 3/2

14:35-11:35

1 stop12h 00m

£337

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 5/3

13:10-17:00

1 stop12h 50m

Seattle/Tacoma Intl

Mon 9/3

15:35-11:35

1 stop12h 00m

£363

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Tue 27/1

06:30-11:50

1 stop14h 20m

Seattle/Tacoma Intl

Tue 3/2

13:30-16:20

2 stops17h 50m

£369

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 25/1

06:30-17:49

2 stops20h 19m

Seattle/Tacoma Intl

Sun 1/2

14:15-16:20

1 stop17h 05m

£372

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 25/1

06:30-18:23

2 stops20h 53m

Seattle/Tacoma Intl

Sat 7/2

13:40-16:20

1 stop17h 40m

£372

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Tue 27/1

06:15-21:12

3 stops23h 57m

Seattle/Tacoma Intl

Tue 3/2

08:40-17:40

3 stops24h 00m

£403

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 23/3

20:50-20:20

2 stops31h 30m

£232

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 23/3

20:50-20:20

2 stops31h 30m

£232

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sat 21/3

07:10-22:13

2 stops23h 03m

£239

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 25/1

18:45-20:57

4 stops59h 12m

£1,198

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Showing 1-10 of 11 results
1
2

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 5 December 2025.

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 £268). Flying from Oslo Gardermoen Airport to Seattle in July is currently the most expensive (average of £378). 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 £337, 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, February is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of £268). Flying from Oslo Gardermoen Airport to Seattle in July is currently the most expensive (average of £378). 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
Leavenworth
SeaTac

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

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Can Cheapflights find flights from Oslo Gardermoen to Seattle with no change fees?

Yes, we can. To see specific flights from Oslo Gardermoen to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Oslo Gardermoen to Seattle become cheaper?

Not ready to book yet? You can track prices for flights from Oslo Gardermoen to Seattle on Cheapflights with our Price Alert feature and get notified when better prices are available.

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