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Cheap flights from Seattle to Oslo from C$ 468

SEA — OSL
5 Dec — 12 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

Sun 6/122:50 p.m. -
1 stop17h 50m
Wed 16/126:15 a.m. -
1 stop14h 45m
Deal found 3/11C$ 695
Sun 6/122:50 p.m. -
1 stop17h 50m
Tue 15/1211:50 a.m. -
2 stops20h 54m
Deal found 3/11C$ 698
Mon 7/126:15 a.m. -
2 stops26h 25m
Wed 16/126:15 a.m. -
1 stop14h 45m
Deal found 3/11C$ 701
Tue 8/127:00 a.m. -
2 stops25h 40m
Tue 15/1211:50 a.m. -
1 stop34h 10m
Deal found 3/11C$ 705
Tue 10/116:30 a.m. -
2 stops19h 30m
Mon 16/116:45 a.m. -
2 stops25h 22m
Deal found 2/11C$ 708
Wed 11/118:09 a.m. -
2 stops24h 31m
Sun 15/119:35 a.m. -
2 stops22h 32m
Deal found 2/11C$ 715
Tue 3/1112:20 p.m. -
2 stops20h 20m
Tue 10/1111:50 a.m. -
3 stops41h 57m
Deal found 3/11C$ 719
Thu 31/121:50 p.m. -
1 stop14h 15m
Mon 11/16:15 a.m. -
1 stop14h 45m
Deal found 31/10C$ 726
Mon 7/121:50 p.m. -
1 stop14h 15m
Tue 15/1211:50 a.m. -
1 stop34h 10m
Deal found 3/11C$ 728

Find flight deals from Seattle to Oslo

Round-trip from

C$ 634

One-way from

C$ 468

Popular in

December

Cheapest in

January

Average price

C$ 716
Icelandair
  • Icelandair
  • 10/2-24/2
  • 2 total stops
  • 33h 50m total
  • Seattle to Oslo
Search Deals
British Airways
  • British Airways
  • 8/2-31/12
  • 1 total stop
  • 31h 10m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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

Tue 9/2

7:31 a.m.-4:10 p.m.

2 stops23h 39m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 472

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sat 13/2

11:11 p.m.-4:10 p.m.

2 stops31h 59m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 472

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Fri 12/2

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

1 stop17h 50m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 547

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sun 17/1

10:50 p.m.-11:00 a.m.

2 stops27h 10m

Oslo Gardermoen

Wed 27/1

11:50 a.m.-12:22 p.m.

2 stops33h 32m

C$ 712

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Mon 16/11

6:30 a.m.-11:00 a.m.

2 stops19h 30m

Oslo Gardermoen

Thu 19/11

6:15 a.m.-11:15 p.m.

2 stops26h 00m

C$ 715

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sun 3/1

2:25 p.m.-8:55 p.m.

1 stop21h 30m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 722
Quickest round-trip

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Thu 7/1

2:25 p.m.-12:25 p.m.

1 stop13h 00m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 722

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Fri 1/1

2:25 p.m.-8:45 a.m.

1 stop33h 20m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 723

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Fri 8/1

11:10 p.m.-4:10 p.m.

2 stops32h 00m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 723

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Fri 11/12

10:55 p.m.-8:45 a.m.

2 stops24h 50m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 729

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

Showing 1-10 of 24 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 below average for this route at the moment.
Seattle to Oslo flights typically cost between C$ 665 and C$ 926 in February.
The cheapest round-trip price found within the last 5 days was C$ 634 on Icelandair (10 Feb-24 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 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
767 reviews
Check prices

Crew

8.0

Overall

6.9

Boarding

7.2

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
767 reviews
Icelandair
6.9
Okay
767 reviews
Check prices

Crew

8.0

Overall

6.9

Boarding

7.2

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.
Lufthansa
6.8
Okay
8,299 reviews
Icelandair
6.9
Okay
767 reviews
Check prices

Crew

8.0

Overall

6.9

Boarding

7.2

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. 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 27h 10m. 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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