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Cheap flights from Seattle to Oslo from C$ 703

SEA — OSL
10 Dec — 17 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

Fri 13/112:50 p.m. -
1 stop17h 50m
Thu 19/116:15 a.m. -
1 stop14h 45m
Deal found 7/11C$ 703
Fri 4/122:50 p.m. -
1 stop17h 50m
Tue 15/1211:50 a.m. -
1 stop34h 10m
Deal found 9/11C$ 705
Mon 7/125:05 a.m. -
2 stops27h 35m
Wed 16/126:15 a.m. -
1 stop14h 45m
Deal found 7/11C$ 708
Wed 2/1212:25 p.m. -
2 stops20h 15m
Tue 15/1211:50 a.m. -
2 stops20h 54m
Deal found 9/11C$ 713
Sun 6/1211:33 p.m. -
2 stops32h 37m
Mon 14/126:15 a.m. -
1 stop14h 45m
Deal found 9/11C$ 714
Wed 11/112:30 p.m. -
2 stops18h 10m
Sat 14/116:45 a.m. -
2 stops21h 18m
Deal found 7/11C$ 715
Sun 6/1211:33 p.m. -
2 stops32h 37m
Tue 15/1211:50 a.m. -
1 stop34h 10m
Deal found 9/11C$ 717
Fri 4/1212:25 p.m. -
2 stops20h 15m
Mon 7/126:15 a.m. -
3 stops40h 07m
Deal found 9/11C$ 720
Tue 10/1111:15 p.m. -
2 stops32h 55m
Sat 14/116:45 a.m. -
2 stops23h 11m
Deal found 7/11C$ 721
Thu 10/126:15 a.m. -
2 stops26h 25m
Sun 13/121:55 p.m. -
2 stops39h 52m
Deal found 7/11C$ 722
Sun 6/122:05 p.m. -
2 stops42h 05m
Sun 13/1211:50 a.m. -
2 stops20h 54m
Deal found 6/11C$ 725
Wed 11/116:30 a.m. -
2 stops25h 40m
Sun 15/116:15 a.m. -
2 stops36h 25m
Deal found 9/11C$ 728

Find flight deals from Seattle to Oslo

Round-trip from

C$ 673

Popular in

December

Cheapest in

January

Average price

C$ 724
Icelandair
  • Icelandair
  • 12/4-23/4
  • 2 total stops
  • 25h 00m total
  • Seattle to Oslo
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Highest demand for flights based on searches. 1% potential increase in price (C$ 22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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

Fri 4/12

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

1 stop17h 50m

Oslo Gardermoen

Sun 13/12

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

1 stop14h 45m

C$ 703

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Fri 4/12

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

1 stop17h 50m

Oslo Gardermoen

Fri 11/12

11:50 a.m.-10:24 a.m.

2 stops31h 34m

C$ 705

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Wed 9/12

2:05 p.m.-5:40 p.m.

2 stops18h 35m

Oslo Gardermoen

Wed 16/12

11:50 a.m.-11:44 p.m.

2 stops20h 54m

C$ 713

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sun 11/4

6:50 p.m.-9:55 p.m.

1 stop18h 05m

Oslo Gardermoen

Thu 22/4

7:00 a.m.-12:14 a.m.

2 stops26h 14m

C$ 713

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Tue 8/12

2:05 p.m.-5:40 p.m.

2 stops18h 35m

Oslo Gardermoen

Tue 15/12

11:50 a.m.-9:44 a.m.

2 stops30h 54m

C$ 713

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Mon 5/4

11:50 p.m.-10:55 a.m.

2 stops26h 05m

Oslo Gardermoen

Mon 19/4

6:25 a.m.-12:20 p.m.

1 stop14h 55m

C$ 718

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Fri 4/12

12:25 p.m.-5:40 p.m.

2 stops20h 15m

Oslo Gardermoen

Mon 7/12

6:15 a.m.-1:22 p.m.

3 stops40h 07m

C$ 720

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Mon 5/4

11:50 p.m.-10:55 a.m.

2 stops26h 05m

Oslo Gardermoen

Wed 14/4

6:45 a.m.-9:56 p.m.

3 stops24h 11m

C$ 722

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Tue 2/3

8:36 a.m.-5:40 p.m.

2 stops24h 04m

Oslo Gardermoen

Tue 9/3

6:45 a.m.-12:49 a.m.

3 stops27h 04m

C$ 722

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sat 30/1

10:50 p.m.-5:10 p.m.

2 stops33h 20m

Oslo Gardermoen

Sun 7/2

11:50 a.m.-12:56 a.m.

2 stops22h 06m

C$ 724

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 15 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$ 705). Flying from Seattle to Oslo in December is currently the most expensive (average of C$ 1,126). 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$ 672 and C$ 935 in April.
The cheapest round-trip price found within the last 5 days was C$ 673 on Icelandair (12 Apr-22 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
767 reviews
Check prices

Entertainment

6.9

Overall

6.9

Food

6.1

Comfort

6.9

Crew

8.0

Boarding

7.2

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

Entertainment

6.9

Overall

6.9

Food

6.1

Comfort

6.9

Crew

8.0

Boarding

7.2

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
8,290 reviews
Icelandair
6.9
Okay
767 reviews
Check prices

Entertainment

6.9

Overall

6.9

Food

6.1

Comfort

6.9

Crew

8.0

Boarding

7.2

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 17h 50m. 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$ 671. Another airline that can offer you cheap pricing is Lufthansa. Icelandair is priced at 19% 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$ 705). Flying from Seattle to Oslo in December is currently the most expensive (average of C$ 1,126). 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$ 671AverageC$ 741FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapestC$ 688AverageC$ 709FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

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Cheapflights helps you search for flights from Seattle to Oslo via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Oslo?

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Oslo for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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Yes, we can. To see specific flights from Seattle to Oslo with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Oslo become cheaper?

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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