$168 Find Cheap Flights from Seattle to Oslo

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Oslo departing on 4/22. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Oslo

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Oslo.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Oslo.
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Everything you should know

Cheapest round-trip
$356
Overall average: $502
Icelandair
Mon 4/13Wed 4/29
SEA - OSL • 1 stop
Cheapest one-way
$168
Typical prices: $244-$409
Icelandair
Wed 4/22
SEA - OSL • 1 stop
Top airlines
Cheapest • from $356 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 8% compared to booking last minute.
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Oslo (SEA-OSL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Oslo 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 Seattle to Oslo

Mon, Apr 13 - Wed, Apr 29
Icelandair Logo
3:40 pm - 12:35 pm
SEA
-
OSL
11h 55m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
OSL
-
SEA
13h 05m
1 stop
$356Icelandair
Mon, Apr 13 - Tue, Apr 28
Icelandair Logo
3:40 pm - 12:35 pm
SEA
-
OSL
11h 55m
1 stop
Icelandair Logo
1:50 pm - 8:40 pm
OSL
-
SEA
15h 50m
1 stop
$397Icelandair
Tue, Apr 14 - Tue, Apr 21
Icelandair Logo
7:00 pm - 12:35 pm
SEA
-
OSL
32h 35m
1 stop
Icelandair Logo
1:50 pm - 8:40 pm
OSL
-
SEA
15h 50m
1 stop
$399Icelandair
Fri, Apr 24 - Fri, May 8
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
OSL
-
SEA
13h 05m
1 stop
$405Icelandair
Fri, Apr 24 - Sun, May 10
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
Icelandair Logo
4:30 pm - 5:55 pm
OSL
-
SEA
34h 25m
1 stop
$407Icelandair
Tue, Apr 7 - Mon, Apr 27
Icelandair Logo
7:00 pm - 12:35 pm
SEA
-
OSL
32h 35m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
OSL
-
SEA
13h 05m
1 stop
$414Icelandair
Mon, May 18 - Tue, May 26
Scandinavian Airlines Logo
7:15 am - 12:25 am
SEA
-
TRF
32h 10m
2 stops
Scandinavian Airlines Logo
6:00 am - 1:45 pm
TRF
-
SEA
16h 45m
1 stop
$779Scandinavian Airlines
Sat, Apr 25 - Sat, May 2
Multiple Airlines Logo
7:00 pm - 12:25 am
SEA
-
TRF
44h 25m
2 stops
Multiple Airlines Logo
3:30 pm - 8:40 pm
TRF
-
SEA
38h 10m
2 stops
$833Multiple Airlines
Wed, Apr 8 - Mon, Apr 27
Scandinavian Airlines Logo
7:20 am - 2:30 pm
SEA
-
TRF
22h 10m
2 stops
Scandinavian Airlines Logo
3:05 pm - 7:03 pm
TRF
-
SEA
36h 58m
2 stops
$901Scandinavian Airlines
Sun, May 17 - Sat, May 30
Scandinavian Airlines Logo
7:15 am - 2:30 pm
SEA
-
TRF
22h 15m
2 stops
Scandinavian Airlines Logo
6:00 am - 1:45 pm
TRF
-
SEA
16h 45m
1 stop
$905Scandinavian Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Oslo flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Oslo, 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 Seattle to Oslo is January, where tickets cost $421 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $755 and $662 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Oslo, 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 Seattle to Oslo, you should book around 2 weeks before departure, which saves you about 8% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Cheapest flight$168
Flight from Seattle to Oslo Airport

When to book flights from Seattle to Oslo

Are your dates flexible? Find out the best times to travel from Seattle to Oslo 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 flights from Seattle to Oslo

  • What is the cheapest flight from Seattle to Oslo?

    In the last 3 days, the lowest price for a flight from Seattle to Oslo was $168 for a one-way ticket and $356 for a round-trip.

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

    Yes, you’ll need a passport to travel to Oslo from Seattle.

  • Which airports will I be using when flying from Seattle to Oslo?

    On your way to Oslo, you’ll fly out from Seattle/Tacoma Intl. You’ll be landing in one of Oslo’s 2 airports: Oslo Gardermoen or Oslo Sandefjord.

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

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

  • Which airline alliances offer flights from Seattle to Oslo?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Seattle and Oslo, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Oslo from Seattle?

    Reykjavik is the most popular layover city among KAYAK users traveling from Seattle to Oslo.

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

    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 Seattle to Oslo.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Oslo from Seattle 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 Seattle to Oslo?

    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 Oslo with an airline and back to Seattle with another airline.

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

    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 Oslo from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Seattle to Oslo

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Oslo. 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 Seattle to Oslo? 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.
7.9
DeltaOverall score based on 8291 reviews
8.1Boarding
8.5Crew
7.9Comfort
7.2Food
7.8Entertainment
Airline reviews

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

2.0 MediocreSusan, Mar 2026
JAX - ATL
Read more Delta reviews

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

With Aeromexico it ended up good but with Delta it was bad because we did everything through Delta... Showed up at the Delta terminal... It was the wrong place! Nothing ever told us to go to the Aeromexico terminal. It said "in partnership with Aeromexico" but I was never instructed to check in with them or go to their terminal. We had to haul @$$ running through the airport and almost didn't make it thanks to this poor communication. 👎🏽

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

Crew members were excellent. The seat wasn’t the best as well as a food options.

Really good. Everything went smoothly. That's what I hope for when I'm on a long flight, especially with multiple changes. Thank you SAS.

5 of my 7 pieces of luggage are missing and they cant call to find out where it is. I have to fill out a form and wait for them to mail it to me in several days (if they find it). That does not work for my travel itinerary. I need my full ticket cost refunded please.

Fantastic. The only thing - out of my six luggage one was lost in Copenhagen, however it was delivered Home 3 Days later so all great..

The crew was friendly, the flight was pleasant. Thank you for your service!

Our trip plan from Kayak stated we were flying SAS. That was not true. The first leg was a Delta flight. We wasted 25 minutes before finding out to check in with the correct airline. Then our SAS flight for the second leg arrived 25 minutes late, and our third leg flight with SAS closed the gate knowing the flight delay was SAS’s fault, and that this flight would only be backed up 5 minutes. The final kicker was that between Delta and SAS, they lost all our checked luggage.

Flight was completely full January 9th? I problem i had the stewardess was bumping into me constantly walking by? very annoying.. on Austrian air I dint have this issue at all...

Amazing! Everyone was so nice and the food was so good!!

Terrible customer service. The flight attendants were rude. We experienced significant turbulence for a large portion of the flight and there was very little check in from the flight deck. The space was extremely limited to the point where it felt like torture. Never again

I was surprised how good an American airline can be - I was really impressed.

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

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.

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

The customer service was unbeatable from the wheelchair assist team to the flight attendants. The pilot also did an excellent job managing the turbulence.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

Problems checking in both on the laptop and on the app. No free seating available at check-in as advertised - must pay for EVERY seat between $23 and $75. No way to cancel seat choice. App menus and site menus are not responsive, and some items are impossible to find. Crew and mobile assistance are friendly and helpful.

Food - Non-Existent. You pay for everything. It is strictly Pay-to-Play!

Again, we paid $ 328.00 for specific seats are were assigned those seats.

Iceland air transfer was bad. They lost my luggage and I just received it 11/1

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

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Excellent service; they helped me reschedule so I can fly in an earlier flight

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Worth every penny to upgrade to BC. Treated and felt more like First Class

I paid for a very expensive Business Class seat to and from Cairo Egypt from Charleston SC. There was partnership from states to London using American Airlines. That leg was amazing. The British Airlines leg was a joke. They used the standard no leg room 3 by 3 seats. A tray was put on the middle seat. The trip was 5 hours, from London to Cairo, thus my BC purchase. There was no screen proving tv/movie options, only a small device plug. The fold down tray and the bag of peanuts were typical of normal short run flying. The one toilet was located in the galley. We all got to know each other well. This was my first and last trip with British Airlines. I now understand why they would NEVER give me a seat chart so that I could make a selection.prior to departure. It honestly would not have made a difference, there were less than 50% of occupied seats. Apparently everyone got the memo but me. I have never felt so cheated as with that trip, got to so another going back to London, yeah. I will be sending a letter to customer service and asking for a refund. I will be photos comparing the two BC legs. OH, one more thing. The FC ticket holders got bulkhead and exit row seats. I know they had to be thrilled

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

Late! Late and late! More than 1hr 30mn. This sucks when it is the last of a 4 flight journey. I missed my dinner! Which is not nice on Valentine’s Day!!! But better than the gate next to us, the poor Chinese people were rebooked to the next day flight. AA had to call security as it became very heated with the passengers! It was a mess at DFW that afternoon/evening. I wish they had some food for the people who travel as part of international journey. Indigo does it in India and it is fantastic.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

Our Jackson, Mississippi to Dallas Fort Worth flight was delayed on 1/19/26.. This was changed to Jackson to Charlotte in the last minute because of this delay. This started some kind of disconnect between American Airlines and British Airways bookings. We could not go past the passport control in London Heathrow. I had to go to the counter and waited for more than 30 minutes to get a new boarding pass. Problems did not end there. Somehow our entire return flight was canceled by someone. I had to make several phone calls over several days to fix the problem – this was not easy from India. Looks like there was some kind of disconnect between two airlines or some agent did not do it right. I’m anxious to know what went wrong.

The issue was not with BA it was with the link yoiu sent fopr booking the flight

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

Information on your arrival and departure airports