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Cheap flights from Seattle to Oslo from C$ 483

SEA — OSL
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Oslo

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Oslo

Wed 4/112:50 p.m. -
1 stop17h 50m
Sat 5/126:15 a.m. -
1 stop14h 45m
Deal found 30/10C$ 694
Fri 30/103:50 p.m. -
1 stop17h 50m
Tue 3/1111:50 a.m. -
2 stops30h 50m
Deal found 29/10C$ 698
Wed 4/118:09 a.m. -
2 stops17h 51m
Thu 3/126:15 a.m. -
1 stop14h 45m
Deal found 30/10C$ 701
Tue 8/1212:25 p.m. -
2 stops20h 15m
Tue 15/1211:50 a.m. -
2 stops39h 38m
Deal found 30/10C$ 704
Wed 4/112:50 p.m. -
1 stop17h 50m
Fri 4/121:55 p.m. -
2 stops35h 28m
Deal found 30/10C$ 708
Wed 4/112:50 p.m. -
1 stop17h 50m
Wed 2/126:15 a.m. -
1 stop14h 45m
Deal found 30/10C$ 709
Thu 29/105:05 a.m. -
2 stops28h 35m
Thu 5/116:15 a.m. -
2 stops23h 44m
Deal found 28/10C$ 712
Wed 4/112:50 p.m. -
1 stop17h 50m
Tue 1/1211:50 a.m. -
1 stop34h 10m
Deal found 30/10C$ 714
Thu 5/111:50 p.m. -
1 stop16h 55m
Sun 6/126:15 a.m. -
1 stop14h 45m
Deal found 30/10C$ 723
Mon 23/1110:40 a.m. -
2 stops21h 50m
Tue 8/1211:50 a.m. -
1 stop34h 10m
Deal found 26/10C$ 728

Find flight deals from Seattle to Oslo

Round-trip from

C$ 666

One-way from

C$ 483

Popular in

December

Cheapest in

January

Average price

C$ 735
Icelandair
  • Icelandair
  • 7/4-27/4
  • 2 total stops
  • 24h 25m total
  • Seattle to Oslo
Search Deals
United Airlines
  • United Airlines
  • 24/4-31/12
  • 2 total stops
  • 34h 15m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (C$ 5 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Oslo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sat 24/4

10:40 p.m.-5:55 p.m.

2 stops34h 15m

Oslo Gardermoen

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 483

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Mon 22/3

2:42 p.m.-5:40 p.m.

3 stops42h 58m

Oslo Gardermoen

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 506

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Thu 8/4

8:30 a.m.-5:55 p.m.

2 stops24h 25m

Oslo Gardermoen

Sat 1/5

7:00 a.m.-5:20 p.m.

1 stop19h 20m

C$ 697

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Tue 10/11

8:09 a.m.-11:00 a.m.

2 stops17h 51m

Oslo Gardermoen

Sun 15/11

6:15 a.m.-12:00 p.m.

1 stop14h 45m

C$ 701

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Wed 10/2

2:50 p.m.-5:40 p.m.

1 stop17h 50m

Oslo Gardermoen

Mon 15/2

6:15 a.m.-12:00 p.m.

1 stop14h 45m

C$ 702

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Tue 9/2

5:00 a.m.-5:40 p.m.

2 stops27h 40m

Oslo Gardermoen

Thu 18/2

6:15 a.m.-12:00 p.m.

1 stop14h 45m

C$ 709
Quickest round-trip

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Tue 24/11

4:05 p.m.-4:10 p.m.

1 stop15h 05m

Oslo Gardermoen

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 716

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Fri 27/11

7:00 a.m.-1:05 p.m.

2 stops21h 05m

Oslo Gardermoen

Fri 4/12

6:45 a.m.-10:32 p.m.

2 stops24h 47m

C$ 737

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Mon 1/2

5:00 a.m.-3:45 p.m.

2 stops25h 45m

Oslo Gardermoen

Thu 4/2

6:15 a.m.-12:00 p.m.

1 stop14h 45m

C$ 740

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sat 6/2

1:50 p.m.-3:45 p.m.

1 stop16h 55m

Oslo Gardermoen

Sun 14/2

1:55 p.m.-12:00 p.m.

1 stop31h 05m

C$ 778

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/10

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Oslo

Have a flexible travel schedule? Discover the best time to fly to Oslo from Seattle with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

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

What is the cheapest month to book a flight from Seattle to Oslo?

Currently, January is the cheapest month in which you can book a flight from Seattle to Oslo (average of C$ 698). Flying from Seattle to Oslo in December is currently the most expensive (average of C$ 1,114). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to Oslo?

Airfare is typical for this route at the moment.
Seattle to Oslo flights typically cost between C$ 665 and C$ 926 in April.
The cheapest round-trip price found within the last 5 days was C$ 666 on Icelandair (7 Apr-27 Apr).

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

To ensure you get the cheapest price possible for a flight from Seattle to Oslo, you should look to book at least 83 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Oslo

Read reviews from past customers who have flown Icelandair and Lufthansa from Seattle to Oslo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
6.9
Okay
764 reviews
Check prices

Food

6.1

Comfort

6.9

Boarding

7.2

Entertainment

6.9

Overall

6.9

Crew

8.0

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.
Icelandair
6.9
Okay
764 reviews
Icelandair
6.9
Okay
764 reviews
Check prices

Food

6.1

Comfort

6.9

Boarding

7.2

Entertainment

6.9

Overall

6.9

Crew

8.0

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.
Lufthansa
6.8
Okay
8,299 reviews
Icelandair
6.9
Okay
764 reviews
Check prices

Food

6.1

Comfort

6.9

Boarding

7.2

Entertainment

6.9

Overall

6.9

Crew

8.0

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.

Related info for your journey

  • What airport do you fly from for flights from Seattle to Oslo?

    Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Oslo. 2 airlines have flights from Seattle/Tacoma Intl to Oslo on a regular basis. Booking flights from Seattle/Tacoma Intl to Oslo should not be difficult; the airport handles an average of 0 outbound flights to Oslo per day.

  • How long is the flight from Seattle to Oslo?

    Airlines like United Airlines fly from Seattle to Oslo in about 24h 25m. The time it takes to get you to your destination can typically vary by up to . The distance from Seattle to Oslo is about 7324 km.

  • What are the cheapest airlines flying from Seattle to Oslo round-trip?

    Cheapflights users have booked flights from Seattle to Oslo round-trip from C$ 632. Another airline that can offer you cheap pricing is Lufthansa. Icelandair is priced at 23% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Seattle to Oslo that include hotel bookings?

    Yes. In addition to deals on Seattle to Oslo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Oslo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Oslo.

  • Can I find deals for business class flights from Seattle to Oslo?

    Yes. Cheapflights offers flight deals from Seattle to Oslo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Oslo?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Oslo (average of C$ 698). Flying from Seattle to Oslo in December is currently the most expensive (average of C$ 1,114). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to Oslo

Seattle to Oslo Gardermoen flights

Top 2 airlines flying from Seattle to Oslo

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 632AverageC$ 734FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapestC$ 681AverageC$ 702FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

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Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Oslo from Seattle today and book when prices fit your budget.

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