Cheap Flights from Oslo Gardermoen to Seattle

Compare Oslo Gardermoen to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

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Flight deals from Oslo Gardermoen to Seattle

Looking for a cheap last-minute deal or the best return flight from Oslo Gardermoen Airport to Seattle? If you want to travel next month, return fares start from R 10,310. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Oslo Gardermoen to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Oslo Gardermoen to Seattle flights are currently cheapest in October.

Oslo to Seattle: Flight information

The things to know before you go.
Cheapest flight foundR 6,402
Cheapest month to flyOctober

Finding cheap flights from Oslo Gardermoen to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Oslo Gardermoen to Seattle is R 8,694. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Oslo Gardermoen to Seattle. But we found flights with one or more stops from R 8,694.
As of July 2026, there are no flights flying from Oslo Gardermoen to Seattle.
The cheapest month to fly from Oslo Gardermoen to Seattle is usually September.
If you're flying from Oslo Gardermoen Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from R 8,694.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Oslo Gardermoen Airport to Seattle on Friday, 4 September 2026.
No airlines currently offer direct flights between Oslo Gardermoen Airport and Seattle. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

In July, the average temperature is usually around 17°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Finnair offers the cheapest flight tickets to Seattle.

Flying from Oslo Airport Gardermoen (OSL) to Seattle: what you need to know

  • Seattle is eight hours behind Oslo, where Oslo Airport Gardermoen is located. Seattle follows the UTC-7 timezone.

  • To avoid rushing for your OSL to Seattle flight, allow plenty of time for things like baggage drop and finding your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the standard rule.

  • If you're flying during a bank holiday or another peak period, give yourself more time. A good general rule is two hours ahead of domestic flights and up to four hours before international departures. Check-in and security lines will be longer.

  • A stopover is the ideal opportunity to break up your journey and maybe even explore another city. When browsing for flight tickets from OSL to Seattle, deselect the 'Direct flights only' box to see where you can visit along the way. Some popular options include:

    • London Heathrow Airport (LHR)

    • Helsinki-Vantaa Airport (HEL)

    • Keflavik International Airport (KEF)

  • OSL is around 40 kilometres from central Oslo. If you're catching a cab, driving or ride-sharing from the centre, it'll take 40 minutes or so to get there, depending on traffic conditions. If you're planning to take public transport, expect the journey time to be around 30 minutes.

  • Planning to catch an early flight from Oslo Airport Gardermoen to Seattle? Avoid the last-minute rush to the airport (and sneak in some extra snooze time) by choosing one of these hotels close to OSL:

  • When it comes to the on-time performance of Oslo Airport Gardermoen, data shows 71.98% of flights meet their scheduled arrival time.

How to find the cheapest flights from Oslo Airport Gardermoen (OSL) to Seattle

  • R 6,408 is currently the lowest price for a one-way Oslo Airport Gardermoen to Seattle flight. Return flight tickets start from R 8,703. These fares may change depending on demand.

  • Don't leave everything to the last minute. You're more likely to find cheap flights from OSL to Seattle if you book ahead. Airlines often offer some excellent early bird discounts.

  • The 'Whole month' search tool will show you the cheapest tickets from Oslo Airport Gardermoen to Seattle throughout the entire month. It's a good way to snap up a bargain if your travel dates aren't set in stone.

  • Spend less time searching for cheap flights from OSL to Seattle by creating a Price Alert. You'll receive an email or notification through the app when a new discounted fare appears.

  • Snag an affordable flight from Oslo Airport Gardermoen to Seattle with the help of our filters. Select your preferred duration, departure time and airlines, then sort the results by 'Cheapest' for the best deals.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is around 23 kilometres from the centre of Seattle. If you're opting for a ride-share or a cab, the drive takes about 20 minutes.

  • If you're using public transport, expect a journey time of about 55 minutes.

  • Book a hotel close to SEA if you have a late flight from Oslo Airport Gardermoen to Seattle. Check in to one of these accommodation options and make arrival day easier:

  • Pick up a Seattle-Tacoma International Airport rental car and explore Seattle and beyond with your own wheels. Thrifty, Europcar and Budget are top providers you can book with here.

  • For the best deal, book your vehicle from Seattle-Tacoma International Airport around one week ahead of your flight from OSL to Seattle.

Lake Union Sea Plane Base Airport (LKE)

  • Lake Union Sea Plane Base Airport (LKE) is about 3 kilometres from the centre of Seattle. After your flight from Oslo Airport Gardermoen to Seattle, it'll take you around 10 minutes to get to the heart of the city in a ride-share or cab.

  • You can expect the journey to take roughly 25 minutes on public transport.

  • After stepping off your OSL to Seattle flight, unwind at a hotel close to LKE. These are some comfortable options that'll help you slip into relaxation mode:

Best time to go to Seattle

  • Before you book your flights from Oslo Airport Gardermoen to Seattle, consider which time of year is best for you. High season in Seattle offers a lively atmosphere and plenty to do, while the low season means you'll get cheaper hotel rates and fewer crowds.

  • The warmest month in Seattle is August, with temperatures ranging between 12ºC (54ºF) and 28ºC (82ºF). Book your Oslo Airport Gardermoen to Seattle flight ticket then if this is the type of weather you enjoy.

  • Look for cheap tickets from OSL to Seattle in February if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

More about Seattle

  • After booking your flight from Oslo Airport Gardermoen to Seattle, choose a hotel that puts you right where the action is. Make one of these accommodation options your base for exploring Seattle:

  • Every great holiday has to include some sightseeing. LMN Architects, Greyhound: Bus Station and Boeing Radiation Effects Lab are essential stops on your Seattle itinerary.

Explore more of United States

  • You've done Seattle, now it's time to explore more of United States. Journey about 241 kilometres south to Portland to tick off its leading attractions. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, you'll have a packed itinerary ahead.

  • Around 370 kilometres east of Seattle, Spokane is another favourite stop in United States. Get a taste of what this destination has to offer at Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.