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Cheap flights from Seattle to Oslo from C$ 407

SEA — OSL
16 Oct — 23 Oct1
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

Mon 19/103:40 p.m. -
1 stop11h 55m
Sat 24/101:50 p.m. -
1 stop15h 50m
Deal found 13/9C$ 598
Wed 21/103:40 p.m. -
1 stop11h 35m
Thu 29/109:30 p.m. -
1 stop28h 30m
Deal found 13/9C$ 600
Tue 20/107:00 p.m. -
1 stop11h 25m
Sat 24/101:50 p.m. -
1 stop15h 50m
Deal found 13/9C$ 668
Tue 20/107:00 p.m. -
1 stop11h 25m
Thu 29/109:30 p.m. -
1 stop28h 30m
Deal found 13/9C$ 669
Wed 21/103:40 p.m. -
1 stop11h 35m
Tue 3/111:10 p.m. -
1 stop12h 50m
Deal found 12/9C$ 694
Sun 18/106:50 p.m. -
1 stop18h 15m
Sun 1/116:15 a.m. -
1 stop14h 45m
Deal found 12/9C$ 697
Sun 18/106:50 p.m. -
1 stop18h 15m
Tue 3/1111:50 a.m. -
2 stops30h 50m
Deal found 16/9C$ 699
Wed 7/106:50 p.m. -
1 stop18h 15m
Tue 13/1011:45 a.m. -
1 stop14h 14m
Deal found 13/9C$ 701
Sun 8/112:50 p.m. -
1 stop17h 50m
Fri 13/116:45 a.m. -
2 stops25h 35m
Deal found 14/9C$ 703
Tue 27/106:30 a.m. -
2 stops20h 30m
Tue 3/1111:50 a.m. -
2 stops20h 17m
Deal found 12/9C$ 706

Find flight deals from Seattle to Oslo

Round-trip from

C$ 566

One-way from

C$ 407

Popular in

December

Cheapest in

January

Average price

C$ 849
Icelandair
  • Icelandair
  • 10/2-16/2
  • 2 total stops
  • 33h 50m total
  • Seattle to Oslo
Search Deals
30/10-31/12
  • 30/10-31/12
  • 2 total stops
  • 20h 50m total
  • Seattle to Oslo
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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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

Wed 7/10

7:00 p.m.-7:35 a.m.

2 stops51h 35m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 421

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Wed 9/12

4:50 p.m.-1:50 p.m.

1 stop36h 00m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 449

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sun 13/12

6:45 p.m.-11:00 a.m.

1 stop31h 15m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 449
Quickest round-trip

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Thu 24/12

1:40 p.m.-2:20 p.m.

1 stop15h 40m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 450

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sat 5/12

6:45 p.m.-11:00 a.m.

1 stop31h 15m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 450

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sun 13/12

7:15 a.m.-4:10 p.m.

2 stops23h 55m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 464

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sat 5/12

10:55 p.m.-4:10 p.m.

2 stops32h 15m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 466

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sun 6/12

6:15 a.m.-3:45 p.m.

3 stops24h 30m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 487

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Mon 14/12

10:52 p.m.-1:50 p.m.

2 stops29h 58m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 490

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Wed 23/12

2:50 p.m.-3:45 p.m.

2 stops15h 55m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 509

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/9

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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$ 586). Flying from Seattle to Oslo in December is currently the most expensive (average of C$ 1,082). 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 below average for this route at the moment.
Seattle to Oslo flights typically cost between C$ 729 and C$ 1,008 in February.
The cheapest round-trip price found within the last 5 days was C$ 566 on Icelandair (10 Feb-16 Feb).

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 81 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 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
745 reviews
Check prices

Boarding

7.2

Overall

6.9

Crew

8.0

Comfort

6.9

Food

6.1

Entertainment

6.9

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
745 reviews
Icelandair
6.9
Okay
745 reviews
Check prices

Boarding

7.2

Overall

6.9

Crew

8.0

Comfort

6.9

Food

6.1

Entertainment

6.9

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. 1 airline 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 Icelandair and United Airlines fly from Seattle to Oslo in about 12h. The time it takes to get you to your destination can typically vary by up to 6h 15m. The distance from Seattle to Oslo is about 7324 km. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Seattle to Oslo round-trip?

    Cheapflights users have booked flights from Seattle to Oslo round-trip from C$ 584. Icelandair is priced at 27% 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$ 586). Flying from Seattle to Oslo in December is currently the most expensive (average of C$ 1,082). 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 airline flying from Seattle to Oslo

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 584AverageC$ 733FlexibilityNo cancel feeOn-time76%
Search Icelandair 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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