Find flights
When to book
FAQs

Cheap flights from Oslo Gardermoen Airport to Seattle from £202

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 20/11. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
18 10월 — 25 10월1
1 adult
1 adult, Economy

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 18 9월 2025.

Round-trip from

£337

One-way from

£202

Popular in

July

Cheapest in

November

Average price

£401
Icelandair
  • Icelandair
  • 28/1-2/2
  • 2 total stops
  • 24h 50m total
  • Oslo to Seattle
Search Deals
Finnair
  • Finnair
  • 20/11
  • 2 total stops
  • 24h 59m total
  • Oslo to Seattle
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£51 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 September 2025
Search Deals

Find flight deals from Oslo Gardermoen to Seattle

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 18 9월 2025.

금 26/1215:05OSL - SEA
1 stop29h 25mBritish Airways
토 10/108:00SEA - OSL
2 stops30h 00mBritish Airways
Deal found 16/9£347
일 2/1107:20OSL - SEA
2 stops20h 55mBritish Airways
일 9/1118:50SEA - OSL
1 stop18h 50mBritish Airways
Deal found 17/9£352
일 2/1105:30OSL - SEA
2 stops19h 00mDelta
일 9/1107:20SEA - OSL
2 stops19h 30mDelta
Deal found 17/9£363
목 6/1113:45OSL - SEA
1 stop31h 25mLufthansa
수 19/1115:10SEA - OSL
1 stop17h 30mLufthansa
Deal found 17/9£376
목 18/1211:45OSL - SEA
1 stop32h 45mBritish Airways
화 6/113:25SEA - OSL
1 stop24h 15mBritish Airways
Deal found 16/9£445
월 6/1013:25OSL - SEA
1 stop17h 57mScandinavian Airlines
일 19/1016:20SEA - OSL
1 stop23h 00mScandinavian Airlines
Deal found 17/9£511
목 18/1215:05OSL - SEA
1 stop29h 25mBritish Airways
월 5/118:50SEA - OSL
1 stop31h 05mBritish Airways
Deal found 16/9£522
월 22/1214:05OSL - SEA
2 stops56h 15mUnited Airlines
화 6/109:25SEA - OSL
2 stops21h 15mUnited Airlines
Deal found 16/9£538
목 18/1211:45OSL - SEA
1 stop32h 45mBritish Airways
금 2/113:35SEA - OSL
1 stop23h 35mBritish Airways
Deal found 16/9£547
월 22/1214:05OSL - SEA
2 stops56h 15mUnited Airlines
월 5/112:35SEA - OSL
2 stops37h 25mUnited Airlines
Deal found 16/9£550

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 18 9월 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

목 29/1

13:10-17:00

1 stop12h 50m

Seattle/Tacoma Intl

수 4/2

14:35-11:35

1 stop12h 00m

£337

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

토 24/1

13:10-17:00

1 stop12h 50m

Seattle/Tacoma Intl

토 7/2

14:35-11:35

1 stop12h 00m

£337

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

금 23/1

13:10-17:00

1 stop12h 50m

Seattle/Tacoma Intl

화 3/2

14:35-11:35

1 stop12h 00m

£337

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

일 25/1

13:05-17:00

1 stop12h 55m

Seattle/Tacoma Intl

금 6/2

14:35-11:35

1 stop12h 00m

£337

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

수 28/1

13:10-17:00

1 stop12h 50m

Seattle/Tacoma Intl

토 7/2

14:35-11:35

1 stop12h 00m

£337

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

화 27/1

13:10-17:00

1 stop12h 50m

Seattle/Tacoma Intl

일 1/2

14:35-11:35

1 stop12h 00m

£337

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

토 24/1

13:10-17:00

1 stop12h 50m

Seattle/Tacoma Intl

목 5/2

14:35-11:35

1 stop12h 00m

£337

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

월 26/1

11:35-16:55

1 stop14h 20m

Seattle/Tacoma Intl

수 4/2

14:05-22:40

2 stops23h 35m

£342

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

토 24/1

11:20-16:55

1 stop14h 35m

Seattle/Tacoma Intl

금 6/2

14:05-17:30

2 stops18h 25m

£344

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

화 27/1

07:20-16:55

1 stop18h 35m

Seattle/Tacoma Intl

금 6/2

14:05-17:30

2 stops18h 25m

£344

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 22 results
1
2
3

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 12 September 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, January is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of £622). Flying from Oslo Gardermoen Airport to Seattle in July is currently the most expensive (average of £946). 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.

  • 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, January is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of £622). Flying from Oslo Gardermoen Airport to Seattle in July is currently the most expensive (average of £946). 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
Bothell
SeaTac

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Oslo Gardermoen to Seattle?

Cheapflights helps you search for flights from Oslo Gardermoen to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Oslo Gardermoen to Seattle for you. Better yet — we are completely free to use.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.