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Cheap flights from Seattle to Oslo from C$ 519

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
2 Jan — 9 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo are usually found in January or November, booked 76 days in advance, depart on a Monday or Wednesday and return on a Monday

Cheap flight deals from Seattle to Oslo

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Oslo
Explore the most affordable flight options available from Seattle to Oslo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 December 2025.

Tue 2/121:40 p.m.SEA - OSL
1 stop17h 40mDelta
Tue 9/126:30 a.m.OSL - SEA
1 stop14h 20mDelta
Deal found 30/11C$ 721
Mon 8/1212:36 p.m.SEA - OSL
2 stops20h 04mUnited Airlines
Sun 14/126:05 a.m.OSL - SEA
2 stops27h 45mUnited Airlines
Deal found 30/11C$ 723
Wed 3/127:10 a.m.SEA - OSL
2 stops24h 10mDelta
Thu 11/126:30 a.m.OSL - SEA
1 stop14h 20mDelta
Deal found 2/12C$ 728
Mon 1/123:05 p.m.SEA - OSL
1 stop16h 10mDelta
Tue 9/126:30 a.m.OSL - SEA
1 stop14h 20mDelta
Deal found 30/11C$ 732
Sun 7/1212:36 p.m.SEA - OSL
2 stops20h 04mUnited Airlines
Mon 15/126:15 a.m.OSL - SEA
2 stops25h 13mUnited Airlines
Deal found 30/11C$ 736
Tue 2/121:40 p.m.SEA - OSL
1 stop17h 40mDelta
Fri 12/129:25 a.m.OSL - SEA
2 stops34h 01mDelta
Deal found 30/11C$ 737
Thu 4/122:00 p.m.SEA - OSL
1 stop14h 00mLufthansa
Thu 11/126:15 a.m.OSL - SEA
1 stop14h 55mLufthansa
Deal found 2/12C$ 740
Wed 3/1212:36 p.m.SEA - OSL
2 stops20h 04mUnited Airlines
Sun 14/126:05 a.m.OSL - SEA
2 stops35h 19mUnited Airlines
Deal found 30/11C$ 742
Wed 3/129:05 a.m.SEA - OSL
2 stops23h 35mUnited Airlines
Sat 13/1211:50 a.m.OSL - SEA
2 stops29h 34mUnited Airlines
Deal found 30/11C$ 744
Wed 3/1210:40 a.m.SEA - OSL
3 stops28h 05mUnited Airlines
Tue 9/126:15 a.m.OSL - SEA
1 stop14h 55mUnited Airlines
Deal found 30/11C$ 746

Find flight deals from Seattle to Oslo

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Oslo (OS1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 3 December 2025.

Round-trip from

C$ 585

One-way from

C$ 519

Popular in

June

Cheapest in

January

Average price

C$ 805
Icelandair
  • Icelandair
  • 19/4-23/4
  • 2 total stops
  • 25h 05m total
  • Seattle to Oslo
Search Deals
Delta
  • Delta
  • 1/4
  • 1 total stop
  • 15h 15m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 284 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Oslo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 3 December 2025.
Use the filters below to find and compare flights from Seattle to Oslo that are best for you.

Fly from

Seattle

Fly to

Oslo

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 19/4

3:45 p.m.-12:35 p.m.

1 stop11h 50m

Oslo Gardermoen

Thu 23/4

4:30 p.m.-8:45 p.m.

1 stop13h 15m

C$ 585

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 22/3

7:50 p.m.-10:55 a.m.

1 stop31h 05m

Oslo Gardermoen

Wed 1/4

11:35 a.m.-6:25 p.m.

1 stop15h 50m

C$ 646

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 23/2

2:35 p.m.-11:35 a.m.

1 stop12h 00m

Oslo Gardermoen

Fri 27/2

1:10 p.m.-5:00 p.m.

1 stop12h 50m

C$ 658

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 22/4

1:33 p.m.-4:35 p.m.

2 stops18h 02m

Oslo Gardermoen

Fri 8/5

12:50 p.m.-11:05 p.m.

2 stops19h 15m

C$ 666

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 27/1

8:00 a.m.-1:50 p.m.

2 stops20h 50m

Oslo Gardermoen

Fri 6/2

6:25 a.m.-1:20 p.m.

1 stop15h 55m

C$ 698

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 22/4

2:16 p.m.-10:10 p.m.

2 stops22h 54m

Oslo Gardermoen

Fri 8/5

6:35 a.m.-11:47 p.m.

3 stops26h 12m

C$ 719

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 10/1

9:00 a.m.-5:40 p.m.

2 stops23h 40m

Oslo Gardermoen

Sat 17/1

6:15 a.m.-6:27 p.m.

2 stops45h 12m

C$ 732

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 19/4

11:59 p.m.-5:15 p.m.

2 stops32h 16m

Oslo Gardermoen

Thu 23/4

6:35 a.m.-12:20 p.m.

1 stop14h 45m

C$ 733

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 2/4

8:25 p.m.-8:40 p.m.

1 stop15h 15m

Oslo Gardermoen

Mon 13/4

11:50 a.m.-11:35 a.m.

1 stop32h 45m

C$ 764

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 8/5

1:33 p.m.-4:35 p.m.

2 stops18h 02m

Oslo Gardermoen

Fri 22/5

8:35 a.m.-4:00 p.m.

1 stop16h 25m

C$ 768

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/12

Showing 1-10 of 20 results
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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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Oslo. Price data was last updated on 28 November 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Oslo, you should look to book at least 76 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.

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$ 474). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 751). 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.

What is the cheapest time of day to fly from SEA to OSL?

Find hourly flight availability from Seattle to Oslo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 December 2025.

It’s typically best to fly out from Seattle to Oslo in the evening. Doing so could potentially save you 31% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Oslo

Get insights into the airlines that provide service to Oslo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Oslo. Reviews last updated 3 December 2025.
Read reviews from past customers who have flown KLM,Scandinavian Airlines, andIcelandair 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.
KLM
7.7
Good
1,428 reviews
Check prices

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,428 reviews
KLM
7.7
Good
1,428 reviews
Check prices

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Scandinavian Airlines
7.4
Good
1,591 reviews
KLM
7.7
Good
1,428 reviews
Check prices

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Icelandair
7.0
Good
584 reviews
KLM
7.7
Good
1,428 reviews
Check prices

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Lufthansa
6.8
Okay
7,607 reviews
KLM
7.7
Good
1,428 reviews
Check prices

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Oslo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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. 4 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, Finnair, and Delta fly from Seattle to Oslo in about 11h 50m. The time it takes to get you to your destination can typically vary by up to 9h. 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. Other airlines that can offer you cheap pricing are KLM, from C$ 603, and Scandinavian Airlines, from C$ 720. Icelandair is priced at 29% 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$ 474). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 751). 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

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Alternative routes for Seattle to Oslo

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Oslo Gardermoen flights

Top 4 airlines flying from Seattle to Oslo

Discover the top 4 airlines that operate flights from Seattle to Oslo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 3 December 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 586AverageC$ 690FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 603AverageC$ 603FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapestC$ 720AverageC$ 774FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapestC$ 897AverageC$ 900FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

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