$428 Find Cheap Flights from Oslo to Seattle - Compare and Save

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Everything you should know

Cheapest round-trip
$505
Typical prices: $578-$864
Icelandair
Tue 10/9Tue 10/23
OSL - SEA • 1 stop
Cheapest one-way
$428
Typical prices: $481-$870
Delta
Wed 11/14
OSL - SEA • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Oslo and Seattle. You'll need to take a connecting flight to reach the destination.
Insights
Insights
Top routes
OSL - SEA
Cheapest • 20% average savings
TRF - SEA
Most popular
Insights
Insights
When to book
20 weeks
in advance
Our data shows that travelers who book at least 20 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
When to travel
February
Cheapest • 29% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Paris Charles de Gaulle (CDG)
Cheapest • Avg $655 (round-trip)
Reykjavik Keflavik Intl (KEF)
Shortest trip • 12h 56m (one-way)
Insights
Insights
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Booking Insights
Flight Deals

Cheap Flights from Oslo to Seattle

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Oslo to Seattle

Fri, Oct 9 - Fri, Oct 23
Icelandair Logo
1:50 pm - 5:55 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
13h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
7:00 pm - 12:35 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
32h 35m1 stop Reykjavik Keflavik Intl
$505Icelandair
Fri, Oct 9 - Fri, Oct 23
Icelandair Logo
1:50 pm - 8:40 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
15h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
7:00 pm - 12:35 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
32h 35m1 stop Reykjavik Keflavik Intl
$506Icelandair
Mon, Oct 26 - Sun, Nov 8
Icelandair Logo
3:30 pm - 6:00 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
34h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 11:35 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
12h 00m1 stop Reykjavik Keflavik Intl
$510Icelandair
Mon, Oct 26 - Sun, Nov 8
Icelandair Logo
3:30 pm - 6:00 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
34h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 11:35 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
12h 00m1 stop Reykjavik Keflavik Intl
$517Icelandair
Mon, Oct 26 - Mon, Nov 2
Multiple Airlines Logo
8:40 am - 12:36 amOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
23h 56m2 stops Helsinki-Vantaa Chicago O'Hare Intl
Multiple Airlines Logo
6:45 pm - 10:40 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
18h 55m1 stop London Heathrow
$521Multiple Airlines
Fri, Jan 22 - Sun, Jan 31
KLM Logo
6:55 pm - 11:50 amOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
25h 55m1 stop Amsterdam Schiphol
KLM Logo
2:25 pm - 8:45 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
33h 20m1 stop Amsterdam Schiphol
$526KLM
Mon, Oct 26 - Sun, Nov 8
Finnair Logo
12:30 pm - 12:36 amOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
20h 06m2 stops Helsinki-Vantaa Chicago O'Hare Intl
Finnair Logo
1:35 pm - 8:05 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
21h 30m2 stops Los Angeles Helsinki-Vantaa
$531Finnair
Mon, Oct 26 - Sun, Nov 8
Scandinavian Airlines Logo
6:00 am - 10:49 pmTRF  Oslo Sandefjord-SEA Seattle/Tacoma Intl
24h 49m2 stops Kastrup Copenhagen Boston Logan Intl
Scandinavian Airlines Logo
10:39 am - 2:05 pmSEA  Seattle/Tacoma Intl-TRF Oslo Sandefjord
18h 26m2 stops Chicago O'Hare Intl Kastrup Copenhagen
$766Scandinavian Airlines
Mon, Oct 26 - Sun, Nov 8
Scandinavian Airlines Logo
6:00 am - 8:04 pmTRF  Oslo Sandefjord-SEA Seattle/Tacoma Intl
22h 04m2 stops Kastrup Copenhagen San Francisco
Scandinavian Airlines Logo
10:39 am - 2:05 pmSEA  Seattle/Tacoma Intl-TRF Oslo Sandefjord
18h 26m2 stops Chicago O'Hare Intl Kastrup Copenhagen
$811Scandinavian Airlines
Mon, Oct 26 - Sun, Nov 8
Scandinavian Airlines Logo
6:00 am - 8:04 pmTRF  Oslo Sandefjord-SEA Seattle/Tacoma Intl
22h 04m2 stops Kastrup Copenhagen San Francisco
Scandinavian Airlines Logo
10:39 am - 2:05 pmSEA  Seattle/Tacoma Intl-TRF Oslo Sandefjord
18h 26m2 stops Chicago O'Hare Intl Kastrup Copenhagen
$830Scandinavian Airlines
Booking Insights

Price, demand and travel trends for Oslo to Seattle flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Oslo to Seattle with more confidence.

How much is a round-trip flight from Oslo to Seattle?

Round-trip flights from Oslo to Seattle start at $505. Prices are below average for this route right now, with typical round-trip fares ranging from $578 to $864. The lowest price found in the past 5 days was $505 on Icelandair.

What's the cheapest day of the week to fly from Oslo to Seattle?

Tuesday is the cheapest day of the week to fly from Oslo to Seattle, it is 6% cheaper than the average day. Thursday is the most expensive day with flight prices 7% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Oslo to Seattle?

  • February is the cheapest month to fly from Oslo to Seattle at $494 round-trip.
  • December ($821) and June ($806) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 66% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Oslo to Seattle the cheapest?

Flights from Oslo to Seattle are cheapest 20 weeks before departure. Booking in this window typically costs about 25% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Oslo to Seattle flights

Low season

February

Cheapest flight

$428
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 13% increase in price.
Flight from Oslo Gardermoen Airport to Seattle

When to book flights from Oslo to Seattle

Are your dates flexible? Find out the best times to travel from Oslo to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Oslo to Seattle flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Oslo to Seattle?

    Flights from Oslo to Seattle may depart from several airports in Oslo area, including Oslo Gardermoen (OSL) and Oslo Sandefjord (TRF). Flights usually arrive at Seattle/Tacoma Intl (SEA).

  • What cabin classes can I book on flights from Oslo to Seattle?

    Two cabin classes are available on flights from Oslo to Seattle:

    • Economy Class
    • Business Class

  • Which airports do connecting flights from Oslo to Seattle pass through?

    One-stop flights from Oslo to Seattle most commonly connect through:

    • Reykjavik Keflavik Intl (KEF) - 50% of one-stop connections
    • Amsterdam Schiphol (AMS) - 14% of one-stop connections
    • Kastrup Copenhagen (CPH) - 11% of one-stop connections
    • Frankfurt am Main (FRA) - 9% of one-stop connections

    Reykjavik Keflavik Intl (KEF) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Oslo to Seattle?

    Yes. Being flexible with your travel dates can save you up to 13% on the Oslo to Seattle route. Tuesday is the cheapest departure day at $665 round-trip on average, while Thursday is the most expensive at $757, a difference of $92. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Pike Place Market, Pier 66 and Lumen Field. These are among the most viewed places in Seattle on KAYAK.

  • How expensive are last-minute Oslo to Seattle flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 14% above the route average of $701. Book 20 weeks before departure for the lowest fares.

  • How long is a flight from Oslo to Seattle?

    A nonstop flight from Oslo to Seattle takes 0h 00m, covering 4,560 miles.

  • Do I need a passport to fly from Oslo to Seattle?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Oslo to Seattle looking right now?

    One-way fares from Oslo to Seattle are currently lower than usual. Average one-way flight prices are about $457, which is 26% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Oslo to Seattle?

    Flying via Reykjavik Keflavik Intl (KEF) gives the shortest average 1-stop total travel time at 12h 56m, compared with 13h 12m via Kastrup Copenhagen (CPH) and 14h 10m via Paris Charles de Gaulle (CDG).

  • What is the time difference between Oslo and Seattle?

    Seattle is 9 hours behind Oslo (Pacific Time vs Central European Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:
    • Fox
    • Europcar
    • Thrifty
    • Budget
    • Dollar

  • How much should I expect to pay for a Oslo to Seattle flight?

    Round-trip flights from Oslo to Seattle range from $578 to $864, with an average of $701 over the past 12 months. Anything below $578 counts as a good deal.

Your guide to booking Oslo to Seattle flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Thursday. On this route, Tuesday flights average $665 - about $92 less than Thursday (12% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 20 weeks before you fly. On this route, that window historically saves about 25% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Oslo to Seattle trip for February. Fares historically average $494 round-trip in that month - typically $327 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.
    - Seattle Airport Marriott
    - Coast Gateway Hotel
    - Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport

More options for your flight from Oslo to Seattle

Complete your trip to Seattle with a hotel stay or car rental

Car rentals in Seattle
Hotels in Seattle
Vacations in Seattle