Cheap flight tickets from Seattle to Oslo Gardermoen

Compare Seattle to Oslo Gardermoen flight deals

Find the cheapest month or even day of the year to fly to Oslo Gardermoen

Book the best Oslo Gardermoen fare with no extra fees

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 RM2,147. 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 foundRM787
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 RM1,871. 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 RM1,871.
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, 12 November 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 Gardermoen Airport (OSL): What you need to know

  • Oslo Gardermoen Airport is located in Oslo. The city is in the UTC+1 timezone and is nine hours ahead of Seattle.

  • Arrive at the airport on time so you don't miss your flight from Seattle to OSL. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid sprinting to your gate.

  • Popular months like July or holiday periods such as Christmas and spring break will mean bigger lines at check-in and security. Be on the safe side and get to the airport even earlier. Arriving two hours before a domestic flight and up four hours ahead of an international flight is a smart move.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Think about adding a stopover to find cheap flights from Seattle to OSL. Simply uncheck 'Direct flights only' when searching for departures from Seattle-Tacoma International Airport (SEA). Slip in a stop (and skip the high fares) by flying through one of these popular options:

    • Amsterdam Schiphol Airport (AMS)

    • Frankfurt Airport (FRA)

    • Keflavik Airport (KEF)

  • SEA is around 23 kilometres from central Seattle. If you're driving, ride-sharing or catching a taxi from the centre, it'll take you 25 minutes or so to get there, depending on traffic conditions. If you're taking public transport, expect the trip time to be around 35 minutes.

  • Searching for a convenient hotel close to Seattle-Tacoma International Airport? If you're catching an early flight from Seattle to Oslo Gardermoen Airport, these accommodation options will put you a quick hop from check-in:

  • Seattle-Tacoma International Airport has a strong on-time performance, reducing your chances of a delayed flight. Departures from SEA make it to their destination as scheduled 80% of the time.

Seattle Paine Field International Airport (PAE)

  • You can get to PAE from central Seattle in approximately 40 minutes by car, depending on traffic conditions. The journey on public transport takes roughly 1 hour 30 minutes to cover the 40 kilometres or so.

  • Flying off with the first light? You might like to check in to one of these accommodation options near Seattle Paine Field International Airport the day before your Seattle to OSL flight:

  • Most flights that leave Seattle Paine Field International Airport reach their destination as planned. It achieves a consistent on-time performance rate of 80%.

About Oslo Gardermoen Airport (OSL)

Getting from Oslo Gardermoen Airport (OSL) to central Oslo

  • Oslo Gardermoen Airport is around 48 kilometres from the centre of Oslo. It takes around 40 minutes or so to get to the city by car.

  • When travelling on public transport, expect a journey time of around 20 minutes.

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

  • At the moment, RM787 is the lowest price we've found for a one-way ticket from Seattle to Oslo Gardermoen Airport. The cheapest price for a return flight is RM1,871. Keep in mind fares may change due to demand at the time of booking.

  • Booking ahead of time is often the key to scoring a cheap flight from Seattle to OSL. Fares tend to rise as seats fill up, so the closer you get to departure, the more you'll likely spend on your ticket.

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

  • Stay on top of deals for plane tickets from Seattle to OSL by creating a Price Alert. We'll send you an email or notification on the app when prices go down.

  • Hunt down a great price on a flight from Seattle to Oslo Gardermoen Airport with the help of the filters. Choose your preferred departure and arrival times, airlines and number of stops. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest.'

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

  • September is when most people book flights from Seattle to Oslo Gardermoen Airport (OSL). Plan your visit to Oslo in January if you prefer a quieter experience.

  • The warmest month in Oslo is July, with temperatures ranging between 8ºC (46ºF) and 25ºC (77ºF). Book your Seattle to OSL plane ticket then if you enjoy this type of weather.

  • Search for cheap tickets from Seattle to Oslo Gardermoen Airport in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -14ºC (7ºF) and 1ºC (34ºF).

More about Oslo

  • When it comes to searching for somewhere to rest your head, you'll find the best places to stay in Oslo right here. Check out these options after locking in your flight from Seattle to Oslo Gardermoen Airport:

  • You'll find loads of things to do in Oslo when you're ready to go sightseeing. Kick things off at The Norwegian National Opera & Ballet followed by Viking Ship Museum and Det Kongelige Slott.

Explore more of Norway

  • Kristiansand is just one of the many cities in Norway waiting to be explored after you've experienced Oslo. Around 290 kilometres away to the southwest, its top attractions include Lille Kjæragbolten, Bystranda and Baneheia Park.

  • Around 137 kilometres southwest of Oslo, Skien is another favourite stop in Norway. Start your sightseeing at The Telemark Canal, Skien Sluse (Telemarkskanalen) and Telemark Museum.

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