Find flights
When to book
Airlines
FAQs

Cheap flights from Seattle to Oslo from C$ 305

SEA — OSL
21 Oct — 28 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

Tue 13/106:50 p.m. -
1 stop18h 15m
Wed 4/116:15 a.m. -
1 stop14h 45m
Deal found 20/9C$ 696
Tue 13/106:50 p.m. -
1 stop18h 15m
Tue 3/1111:50 a.m. -
1 stop34h 10m
Deal found 20/9C$ 699
Tue 27/1012:20 p.m. -
2 stops21h 20m
Mon 2/116:15 a.m. -
1 stop14h 45m
Deal found 20/9C$ 702
Tue 10/1112:20 p.m. -
2 stops20h 20m
Thu 19/116:15 a.m. -
1 stop14h 45m
Deal found 18/9C$ 703
Thu 5/115:05 a.m. -
2 stops27h 35m
Thu 12/1111:50 a.m. -
2 stops20h 17m
Deal found 21/9C$ 706
Wed 28/107:00 a.m. -
2 stops26h 10m
Sun 1/116:15 a.m. -
1 stop14h 45m
Deal found 20/9C$ 708
Thu 12/117:00 a.m. -
2 stops25h 10m
Thu 19/116:15 a.m. -
1 stop14h 45m
Deal found 18/9C$ 709
Sun 8/112:50 p.m. -
1 stop17h 50m
Fri 13/116:15 a.m. -
2 stops36h 25m
Deal found 21/9C$ 710
Tue 29/96:50 p.m. -
1 stop14h 10m
Sun 1/116:15 a.m. -
1 stop14h 45m
Deal found 18/9C$ 712
Mon 12/1011:14 p.m. -
2 stops33h 01m
Sun 25/107:15 a.m. -
1 stop14h 45m
Deal found 17/9C$ 713
Tue 27/1012:20 p.m. -
2 stops21h 20m
Sat 31/106:15 a.m. -
1 stop14h 45m
Deal found 20/9C$ 717

Find flight deals from Seattle to Oslo

Round-trip from

C$ 696

One-way from

C$ 305

Popular in

December

Cheapest in

January

Average price

C$ 831
United Airlines
  • United Airlines
  • 13/10-4/11
  • 2 total stops
  • 33h 00m total
  • Seattle to Oslo
Search Deals
Scandinavian Airlines
  • Scandinavian Airlines
  • 29/9-31/12
  • 1 total stop
  • 32h 20m total
  • Seattle to Oslo
Search Deals
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 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 8/12

7:20 a.m.-1:50 p.m.

2 stops21h 30m

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

Thu 10/12

1:40 p.m.-11:30 p.m.

1 stop24h 50m

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 12/12

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

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$ 466
Quickest round-trip

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sat 26/9

1:30 p.m.-11:45 a.m.

1 stop13h 15m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 502

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Fri 1/1

6:00 a.m.-8:45 a.m.

2 stops17h 45m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 505

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sat 26/9

10:42 a.m.-5:15 p.m.

2 stops21h 33m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 513

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Sat 3/10

10:40 p.m.-1:40 p.m.

2 stops30h 00m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 515

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Fri 5/2

3:51 p.m.-11:00 a.m.

3 stops58h 09m

Oslo Gardermoen

Wed 31/12

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

Nonstop0h 00m

C$ 529

SeattleOslo

SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen

SEAOSL

Seattle/Tacoma Intl

Thu 5/11

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

2 stops27h 35m

Oslo Gardermoen

Thu 12/11

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

1 stop14h 45m

C$ 703

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/9

Showing 1-10 of 18 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$ 589). Flying from Seattle to Oslo in December is currently the most expensive (average of C$ 1,085). 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$ 663 and C$ 964 in October.
The cheapest round-trip price found within the last 5 days was C$ 696 on United Airlines (13 Oct-4 Nov).

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 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
747 reviews
Check prices

Food

6.1

Boarding

7.2

Entertainment

6.9

Comfort

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
747 reviews
Icelandair
6.9
Okay
747 reviews
Check prices

Food

6.1

Boarding

7.2

Entertainment

6.9

Comfort

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
8,237 reviews
Icelandair
6.9
Okay
747 reviews
Check prices

Food

6.1

Boarding

7.2

Entertainment

6.9

Comfort

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 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 8h 20m. The distance from Seattle to Oslo is about 7324 km. This flight may include one or multiple stops.

  • 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$ 586. Another airline that can offer you cheap pricing is Lufthansa. 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$ 589). Flying from Seattle to Oslo in December is currently the most expensive (average of C$ 1,085). 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$ 586AverageC$ 735FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapestC$ 682AverageC$ 703FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

How does Cheapflights help users find flights from Seattle to Oslo?

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.

Can Cheapflights find flights from Seattle to Oslo with no change fees?

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.