Cheap Flights from Oslo (OSLO) to Seattle (SEAA)

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Flight deals from Oslo to Seattle

Looking for a cheap last-minute deal or the best return flight from Oslo to Seattle? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Oslo to Seattle

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

Alternative Oslo to Seattle routes

Looking for the cheapest, fastest or easiest route from Oslo to Seattle? You could fly into the following airports instead.

Oslo to Seattle: Flight information

The things to know before you go.
Cheapest flight found$623
Cheapest month to flySeptember

Finding cheap flights from Oslo 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 to Seattle is $623. 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 to Seattle. But we found flights with one or more stops from $623.
As of May 2025, there are no flights flying from Oslo to Seattle.
The cheapest month to fly from Oslo to Seattle is usually May 2025.
If you're flying from Oslo, 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 $623.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Oslo to Seattle on Friday, 5 September 2025.
No airlines currently offer direct flights between Oslo 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 May, the average temperature is usually around 12°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.
The cheapest airline that flies to Seattle is Scandinavian Airlines .

Flying from Oslo to Seattle: what you need to know

  • Oslo has two main airports that could be the jumping-off point for your adventure. Explore your options for reserving a flight from Oslo to Seattle departing from Oslo Airport Gardermoen (OSL) or Torp Sandefjord Airport (TRF).

  • Seattle-Tacoma International Airport (SEA) and Lake Union Sea Plane Base Airport (LKE) are Seattle's chief entry points.

  • The timezone in Seattle is UTC-7, which is eight hours behind Oslo.

  • For a smooth journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. That way, you can comfortably catch your Oslo to Seattle flight.

  • During popular months like June, it's a good idea to get to the airport earlier than usual. Plan to arrive two hours before a domestic departure and four hours ahead of international flights whenever you're flying during a peak period in general.

How to find the cheapest flights from Oslo to Seattle

  • Booking ahead of time is often the key to finding a cheap Oslo to Seattle flight. Fares tend to rise as demand increases, so the closer you get to departure, the more expensive your ticket may be.

  • The 'Whole month' tool shows you the cheapest plane tickets from Oslo to Seattle throughout the month. It's an easy way to snap up a bargain if your plans are flexible.

  • Never miss a deal on cheap flights from Oslo to Seattle by creating a Price Alert. You'll receive an email or notification through the app when a new discounted fare appears.

  • Choose your ideal arrival and departure times, number of stops and airlines with the filters. Or sort your Oslo to Seattle flight results by 'Best,' 'Cheapest' or 'Fastest.'

Flying from Oslo

Oslo Airport Gardermoen (OSL)

  • Think about adding a stopover to possibly find a cheaper Oslo to Seattle flight. Just uncheck 'Direct flights only' when searching for departures from Oslo Airport Gardermoen. Take a break from travelling at one of these popular airports:

    • Helsinki-Vantaa Airport (HEL)

    • Keflavik International Airport (KEF)

    • London Heathrow Airport (LHR)

  • Located around 40 kilometres from central Oslo, OSL can be reached in about 40 minutes by car, depending on traffic. The journey on public transport is roughly 30 minutes.

  • After a relaxed start to your trip? Stay near Oslo Airport Gardermoen. Whether you're boarding an early flight from Oslo to Seattle or just don't want to be rushed, these hotels have you covered:

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

Torp Sandefjord Airport (TRF)

  • On public transport, you can travel from central Oslo to TRF in around 2 hours 20 minutes. The airport is roughly 88 kilometres away. Driving will take you about 1 hour 30 minutes.

  • Want to treat yourself to an extra night away before your flight from Oslo to Seattle? Unwind in a hotel near Torp Sandefjord Airport before your holiday officially starts. These stays are calling your name:

  • 66.77% of flights leaving Torp Sandefjord Airport make it to their destination as expected.

Arriving in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is approximately 18 kilometres from the centre of Seattle. If you're catching a cab or a ride-share, the drive takes roughly 20 minutes.

  • It typically takes 55 minutes to get there on public transport.

  • Consider booking a hotel close to SEA if you have a late flight from Oslo to Seattle. Choose one of these accommodation options and avoid the hassle of a long transfer:

  • Go wherever you want, whenever you want with a Seattle-Tacoma International Airport rental car. Pick up a set of wheels from Thrifty, Europcar or Budget and experience more of Seattle and beyond.

  • Reserving your ride from Seattle-Tacoma International Airport about one week ahead can help you get the best possible rate.

Lake Union Sea Plane Base Airport (LKE)

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

  • The journey will take roughly 25 minutes on public transport.

  • After your flight from Oslo to Seattle, rest your head at a hotel close to LKE. These are some comfortable options that'll help you get into relaxation mode:

Best time to go to Seattle

  • May is the quietest month for flights from Oslo to Seattle, while July is the busiest. Work out the best time to go to Seattle based on whether you want a bustling atmosphere or a more laid-back vibe.

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

  • If you want cooler conditions, look for a cheap flight from Oslo to Seattle in February when temperatures average between -1ºC (30ºF) and 11ºC (52ºF).

More about Seattle

  • When it comes to searching for somewhere to rest your head, you'll find the most popular stays in Seattle right here. Explore these hotels once you've locked in your flight from Oslo to Seattle:

  • Greyhound: Bus Station and LMN Architects are just two of the top attractions to put on your Seattle to-do list. Continue your sightseeing adventures at Boeing Radiation Effects Lab.

Explore more of United States

  • You've visited Seattle, now it's time to explore more of United States. Travel around 241 kilometres south to Portland to tick off its leading attractions. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, your itinerary will be busy.

  • If there's time to check out another corner of United States, head for Spokane, about 370 kilometres east of Seattle. Manito Park, Northwest Museum of Arts & Culture and Spokane Falls are key reasons to visit.

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