C$254 Cheap Flights from Seattle (SEAA) to Oslo Gardermoen (OSL)

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Flight deals from Seattle to Oslo Gardermoen

Looking for a cheap last-minute deal or the best return flight from Seattle to Oslo Gardermoen Airport? If you want to travel next month, return fares start from C$694. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Oslo Gardermoen

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

Seattle to Oslo Gardermoen: Alternative routes

Compare routes from Seattle to Oslo below. You may find an airport to fly into that's cheaper, faster, or easier than Oslo Gardermoen.

Seattle to Oslo: Flight information

The things to know before you go.
Cheapest flight foundC$254
Cheapest month to flyOctober

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

The best price we found for a return flight from Seattle to Oslo Gardermoen is C$611. 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 Seattle to Oslo Gardermoen. But we found flights with one stop from C$611.
As of May 2026, there are no flights flying from Seattle to Oslo Gardermoen.
The cheapest month to fly from Seattle to Oslo Gardermoen is usually November.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Oslo Gardermoen Airport on Thursday, November 12, 2026.
No airlines currently offer direct flights between Seattle and Oslo Gardermoen Airport. 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 Oslo Gardermoen 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 Oslo is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Oslo Gardermoen is Icelandair .

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

  • Get your vacation planning started by considering where you'll catch your flight from Seattle to Oslo Airport Gardermoen (OSL). Seattle-Tacoma International Airport (SEA) and Lake Union Sea Plane Base (LKE) are the two main airports in Seattle.

  • Oslo is 8 hours ahead of Seattle. Oslo Airport Gardermoen is located in Oslo, which operates on the UTC+1 timezone.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Be at the airport on time to catch your flight from Seattle to OSL.

  • With more people on the move during busy periods like July, be at your terminal even earlier. Two hours for domestic flights and up to four for international journeys will allow for additional wait times. Remember things also get busy during major holidays like Thanksgiving.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Consider adding a stopover to potentially find a cheaper flight from Seattle to OSL. Just deselect 'Direct flights only' when browsing departures from Seattle-Tacoma International Airport (SEA). Break up your trip (and maybe save some cash) by stopping at one of these popular airports:

    • Amsterdam Airport Schiphol Airport (AMS)

    • Frankfurt Airport (FRA)

    • Keflavik International Airport (KEF)

  • From central Seattle, SEA is around 23 kilometres away. Visit the official airport website or use navigation apps to find the best way to get there.

  • In search of a handy hotel near Seattle-Tacoma International Airport? If you're boarding an early flight from Seattle to Oslo Airport Gardermoen Airport, these stays will put you moments from your departure lounge:

Lake Union Sea Plane Base (LKE)

  • Break up your flight from Seattle to Oslo Airport Gardermoen with a stop so you can freshen up or cross another place off your list. Popular stopovers between Lake Union Sea Plane Base and OSL include:

    • Helsinki-Vantaa Airport (HEL)

    • Keflavik International Airport (KEF)

    • London Heathrow Airport (LHR)

  • You can reach LKE from central Seattle in about 11 minutes by car, depending on traffic conditions. The journey by public transport takes roughly 23 minutes to travel the 3 kilometres or so.

  • You're going on vacation, so why not enjoy an additional night away? Consider checking in to one of these accommodation options near Lake Union Sea Plane Base the day before your flight from Seattle to OSL:

About Oslo Airport Gardermoen Airport (OSL)

Getting from Oslo Airport Gardermoen Airport (OSL) to central Oslo

  • Oslo Airport Gardermoen Airport is approximately 48 kilometres from the centre of Oslo. With your own car rental or in a cab, the drive is about 38 minutes.

  • It'll take around 30 minutes to get there using public transport.

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

  • C$254 is the cheapest price we've seen for a one-way ticket from Seattle to Oslo Airport Gardermoen Airport. Return flights start from C$611. Prices are subject to change based on availability and may vary at the time of booking.

  • It's usually best to book ahead of time if you're looking for flight tickets from Seattle to OSL. That's because airlines adjust prices based on demand, which tends to increase closer to the departure date.

  • Finding flight tickets from Seattle to Oslo Airport Gardermoen Airport is more likely if you're flexible with your dates. Try using the 'Whole month' search tool to see the lowest prices throughout the month and bag a great deal.

  • Finding a cheap ticket from Seattle to OSL is easy with Price Alerts. Simply create one of these automatic alerts and we'll notify you when the price drops.

  • Take advantage of the filters to find your ideal trip. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Seattle to Oslo Airport Gardermoen Airport, use the 'Sort by' function. You can also filter by arrival and departure times, airline, and journey duration.

The best time to fly from Seattle to Oslo Airport Gardermoen Airport (OSL)

  • It's time to choose your travel dates for your flight from Seattle to Oslo Airport Gardermoen Airport. June is the most popular month for a trip to Oslo. If you like a more relaxed vibe, go in February.

  • Lock in your flight from Seattle to OSL for July if you're eager to visit the city during its warmest month. Expect temperatures in Oslo to range from 8ºC to 25ºC.

  • Look for cheap flights from Seattle to Oslo Airport Gardermoen Airport in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -14ºC and 1ºC on average.

More about Oslo

  • Start your Oslo trip off on the right foot by choosing the perfect place to stay. After booking your flight from Seattle to Oslo Airport Gardermoen Airport, explore our selection of hotels including:

  • Viking Ship Museum and The Norwegian National Opera & Ballet are just the start of the top-rated attractions to add to your Oslo travel itinerary. Continue your sightseeing adventures at Akershus Fortress.

Complete your Oslo trip with a car rental

  • Close all those tabs and leave the hard work to us. We've also got awesome deals on car rentals in Oslo once you've booked your cheap flight from Seattle to Oslo Airport Gardermoen. Easily compare prices all in one place and drive away with the lowest rate in town.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.