OSL - SEA

$417 Find Cheap Flights from Oslo Airport to Seattle - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Oslo Gardermoen to Seattle departing on 1/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$474
Typical prices: $557-$725
Lufthansa
Tue 8/25Tue 9/1
OSL - SEA • 1 stop
Cheapest one-way
$394
Typical prices: $875-$1,425
Multiple Airlines
Sun 1/17
OSL - SEA • 1 stop
Top airlines
Cheapest • from $474 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Oslo Gardermoen and Seattle. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $472 (round-trip)
Shortest trip • 13h 15m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 25% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
Good to know
+1
+1
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Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Oslo Gardermoen to Seattle (OSL-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Oslo Gardermoen to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Oslo Gardermoen to Seattle

Tue, Aug 25 - Tue, Sep 1
Lufthansa Logo
6:55 am - 11:55 am
OSL
-
SEA
14h 00m
1 stop
Lufthansa Logo
6:50 pm - 6:00 pm
SEA
-
OSL
14h 10m
1 stop
$474Lufthansa
Fri, Sep 11 - Sat, Sep 26
Icelandair Logo
4:30 pm - 8:40 pm
OSL
-
SEA
13h 10m
1 stop
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
$492Icelandair
Mon, Sep 7 - Tue, Sep 22
Icelandair Logo
4:30 pm - 11:45 am
OSL
-
SEA
28h 15m
1 stop
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
$494Icelandair
Mon, Sep 7 - Tue, Sep 22
Icelandair Logo
4:30 pm - 11:45 am
OSL
-
SEA
28h 15m
1 stop
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
$500Icelandair
Fri, Sep 4 - Sun, Sep 20
Scandinavian Airlines Logo
9:00 pm - 1:45 pm
OSL
-
SEA
25h 45m
1 stop
Scandinavian Airlines Logo
3:55 pm - 2:55 pm
SEA
-
OSL
14h 00m
1 stop
$503Scandinavian Airlines
Fri, Sep 4 - Sat, Sep 19
Scandinavian Airlines Logo
9:00 pm - 1:45 pm
OSL
-
SEA
25h 45m
1 stop
Scandinavian Airlines Logo
3:55 pm - 12:55 pm
SEA
-
OSL
12h 00m
1 stop
$510Scandinavian Airlines
Mon, Aug 31 - Mon, Sep 14
Finnair Logo
12:50 pm - 4:00 pm
OSL
-
SEA
12h 10m
1 stop
Finnair Logo
5:40 pm - 7:45 pm
SEA
-
OSL
17h 05m
1 stop
$544Finnair
Fri, Sep 4 - Sun, Sep 20
American Airlines Logo
12:50 pm - 4:00 pm
OSL
-
SEA
12h 10m
1 stop
American Airlines Logo
1:30 pm - 11:40 pm
SEA
-
OSL
25h 10m
1 stop
$549American Airlines
Mon, Sep 7 - Sun, Sep 20
American Airlines Logo
12:50 pm - 4:00 pm
OSL
-
SEA
12h 10m
1 stop
American Airlines Logo
1:30 pm - 11:40 pm
SEA
-
OSL
25h 10m
1 stop
$549American Airlines
Thu, Sep 10 - Fri, Sep 25
Scandinavian Airlines Logo
7:20 pm - 1:45 pm
OSL
-
SEA
27h 25m
1 stop
Scandinavian Airlines Logo
3:55 pm - 12:55 pm
SEA
-
OSL
12h 00m
1 stop
$573Scandinavian Airlines
Booking Insights

KAYAK's insights & trends for Oslo Gardermoen to Seattle flights

Get data-powered insights and trends into flights from Oslo Gardermoen to Seattle to help you find the cheapest flights, the best time to fly and much more.

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Oslo Gardermoen Airport to Seattle departing in August.

Flight prices are below average for this route right now.

Flights to Seattle from Oslo Gardermoen Airport usually cost between $627 and $805 in August.
The lowest price found in the past 5 days was $474 on Lufthansa (Aug 25-Sep 1).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Oslo Gardermoen Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Oslo Gardermoen Airport to Seattle is October, where tickets cost $525 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $815 and $805 respectively.

How far in advance should I book a flight from Oslo Gardermoen Airport to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Oslo Gardermoen Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Oslo Gardermoen Airport to Seattle, you should book around 2 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low season

November

Cheapest flight

$417
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Oslo Airport to Seattle

When to book flights from Oslo Gardermoen to Seattle

Are your dates flexible? Find out the best times to travel from Oslo Gardermoen to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Oslo Airport to Seattle flights

  • What is the cheapest flight from Oslo Gardermoen Airport to Seattle?

    In the last 5 days, the lowest price for a flight from Oslo Gardermoen Airport to Seattle was $394 for a one-way ticket and $474 for a round-trip.

  • Do I need a passport to fly between Oslo Airport and Seattle?

    Yes

  • Which aircraft models fly most regularly from Oslo Airport to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Oslo Airport to Seattle?

    SkyTeam is the only airline alliance operating flights between Oslo Airport and Seattle.

  • Which is the best airline for flights from Oslo to Seattle, Scandinavian Airlines or Icelandair?

    The two airlines most popular with KAYAK users for flights from Oslo to Seattle are Scandinavian Airlines and Icelandair. With an average price for the route of $797 and an overall rating of 7.4, Scandinavian Airlines is the most popular choice. Icelandair is also a great choice for the route, with an average price of $619 and an overall rating of 7.0.

  • How does KAYAK find such low prices on flights from Oslo Airport to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Oslo Airport to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Oslo Airport to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Oslo Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Oslo Airport to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Oslo Airport with another airline. Booking your flights between Oslo Airport and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Oslo Airport to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Oslo Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Oslo Gardermoen to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Oslo to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Oslo Gardermoen to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Scandinavian AirlinesOverall score based on 1912 reviews
7.7Boarding
8.0Crew
7.3Comfort
6.8Entertainment
6.8Food
Airline reviews

This was my return flight and it was 100% different than my out bound. Better seats and great food for sure. As i was disappointed last time but this time they made up for it

10.0 Excellentkarso, Jul 2026
CPH - IAD
Read more Scandinavian Airlines reviews

This was my return flight and it was 100% different than my out bound. Better seats and great food for sure. As i was disappointed last time but this time they made up for it

Bid process for upgrade is very frustrating. I was notified that I had won the bidding, then was told there was no seat available.

Flight was cancelled without notice or any reason given. I found out coincidentally when i was checking the baggage allowance on the app, When contacting the airline, the only option peresented to us meant we lost a day of our weekend getaway. Had a lot of contact with airline prior to flight, trying to get them to resolve the issue. We could have traveled the first stretch ourselves but the airline refused to accommodate this. The airline outright refused to be forthcoming in agreeing to alternatives that would let ut keep the date we had booked, and so a third of our holiday effectively vanished. This meant a lot of hassle, changing hotel nights, activities etc. Furthermore and after the flight, customer service refused to answer our complaint unless we used their very restrictive online form, which gave us no chance to properly explain what our issues were. They have of course denied our complaint, and so i have to bring the matter further. If you have an alternative airline to use, please do. SAS treats its customers as a necessary evil.

Yes avoid JFK airport at all costs. A horror to navigate.

Really like this airline. Best food for airlines and comfortable seats and attentive staff. Delay was due to air traffic.

great crew, professional, funny, and great service. good condition plane too! great experience

SAS is very good at service, the lounge was great, and flights were on time. Boarding is fast and efficient!

Very difficult to clearly hear the dialogue on videos due to airplane engine sound. Flying to Copenhagen audio was very clear. Food was excellent. Returning flight--Lunch and breakfast food was the worst I've experienced. Audio was terrible. Why the difference?

Travelling coach, comfort is all in one's perspective. Movie choices were great. Food was OK. Flight crew were pleasant. Tip: If they come through asking if you want tea or coffee, do not ask for water. They get miffed. So use the call button after they pass through.

Food was underwhelming. One free coke, charged $$ for one wine. Last year one wine was included. And prices were much lower.

Just be careful, it is not business class, not flat seats, just as in comfort plus.

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

One of the worst airlines I ever flew. Boarding is a disaster, they are always late, the planes are overly crowded. Everyone on my flight lost their connection because they were 2h late. Reykjavik is also not the best airport out there.

Flight was delayed. They did a terrible job rebooking me. Agent on the ground was useless. The partner airline who ran the plane was able to help me but Iceland air was useless

The cost for the flight was quite reasonable and transferring to a new flight in Reykjavík went smoothly. There was enough time to grab a bite to eat at the airport, and the luggage transferred to the new flight with no problem.

Flight delayed Delay to the gate upon arrival Baggage took more than an hour so we missed our connecting!!! Terrible experience!

Everything you need to know for your flight from Oslo Gardermoen to Seattle

Information on your arrival and departure airports