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Cheap flights from Seattle to Oslo from C$ 494

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
26 Dec — 2 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

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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 26 November 2025.

Tue 2/121:40 p.m.SEA - OSL
1 stop17h 40mDelta
Mon 8/126:25 a.m.OSL - SEA
1 stop16h 00mDelta
Deal found 23/11C$ 731
Tue 2/1212:36 p.m.SEA - OSL
2 stops20h 04mUnited Airlines
Thu 11/126:15 a.m.OSL - SEA
1 stop14h 55mUnited Airlines
Deal found 23/11C$ 732
Tue 2/121:40 p.m.SEA - OSL
1 stop17h 40mDelta
Sun 7/129:25 a.m.OSL - SEA
1 stop35h 25mDelta
Deal found 23/11C$ 734
Wed 3/1210:25 a.m.SEA - OSL
2 stops20h 55mDelta
Wed 10/126:25 a.m.OSL - SEA
1 stop16h 00mDelta
Deal found 23/11C$ 738
Tue 2/121:40 p.m.SEA - OSL
1 stop17h 40mDelta
Thu 11/126:25 a.m.OSL - SEA
2 stops24h 58mDelta
Deal found 24/11C$ 745
Wed 3/1212:36 p.m.SEA - OSL
2 stops20h 04mUnited Airlines
Mon 15/126:15 a.m.OSL - SEA
2 stops26h 00mUnited Airlines
Deal found 24/11C$ 746
Tue 2/121:40 p.m.SEA - OSL
1 stop17h 40mDelta
Sun 14/129:50 a.m.OSL - SEA
2 stops38h 09mDelta
Deal found 24/11C$ 748
Wed 3/123:05 p.m.SEA - OSL
1 stop16h 10mDelta
Mon 8/126:25 a.m.OSL - SEA
1 stop16h 00mDelta
Deal found 23/11C$ 749
Wed 3/127:00 a.m.SEA - OSL
2 stops31h 45mUnited Airlines
Fri 12/126:15 a.m.OSL - SEA
1 stop14h 55mUnited Airlines
Deal found 23/11C$ 751
Wed 3/1210:25 a.m.SEA - OSL
2 stops20h 55mDelta
Thu 11/126:25 a.m.OSL - SEA
2 stops23h 25mDelta
Deal found 23/11C$ 752
Mon 1/128:10 a.m.SEA - OSL
2 stops24h 20mUnited Airlines
Fri 12/126:15 a.m.OSL - SEA
1 stop14h 55mUnited Airlines
Deal found 23/11C$ 753

Cheap 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 26 November 2025.

Round-trip from

C$ 590

One-way from

C$ 494

Popular in

June

Cheapest in

January

Average price

C$ 681
Icelandair
  • Icelandair
  • 15/2-23/2
  • 2 total stops
  • 24h 50m total
  • Seattle to Oslo
Search Deals
10/1
  • 10/1
  • 3 total stops
  • 44h 15m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 294 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 26 November 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

Tue 5/5

2:00 p.m.-5:20 p.m.

2 stops18h 20m

Oslo Gardermoen

Thu 21/5

9:00 p.m.-1:45 p.m.

1 stop25h 45m

C$ 590

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$ 642

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/3

6:50 p.m.-10:40 p.m.

1 stop18h 50m

Oslo Gardermoen

Tue 24/3

8:45 a.m.-8:20 p.m.

2 stops19h 35m

C$ 649

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 11/2

1:38 p.m.-6:50 p.m.

2 stops20h 12m

Oslo Gardermoen

Mon 16/2

6:30 a.m.-11:40 a.m.

1 stop14h 10m

C$ 713

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 11/2

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

2 stops23h 00m

Oslo Gardermoen

Mon 16/2

8:50 p.m.-7:31 p.m.

2 stops31h 41m

C$ 714

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 20/1

2:02 p.m.-7:15 p.m.

2 stops20h 13m

Oslo Gardermoen

Tue 27/1

9:05 p.m.-10:25 p.m.

2 stops34h 20m

C$ 715

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 15/2

5:30 a.m.-2:45 p.m.

2 stops24h 15m

Oslo Gardermoen

Mon 23/2

12:40 p.m.-6:29 p.m.

2 stops38h 49m

C$ 718

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 15/2

5:30 a.m.-2:45 p.m.

2 stops24h 15m

Oslo Gardermoen

Sun 22/2

6:30 a.m.-10:29 a.m.

2 stops36h 59m

C$ 729

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 1/5

12:45 p.m.-6:00 p.m.

2 stops20h 15m

Oslo Gardermoen

Thu 7/5

6:35 a.m.-7:41 p.m.

2 stops22h 06m

C$ 735

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 8/5

7:20 a.m.-9:15 a.m.

2 stops16h 55m

Oslo Gardermoen

Fri 22/5

8:00 a.m.-1:45 p.m.

1 stop14h 45m

C$ 736

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/11

Showing 1-10 of 21 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 21 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$ 478). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 758). 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 26 November 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 26 November 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
1,423 reviews
Check prices

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Food

7.2

Boarding

7.8

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
1,423 reviews
KLM
7.7
Good
1,423 reviews
Check prices

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Food

7.2

Boarding

7.8

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
1,589 reviews
KLM
7.7
Good
1,423 reviews
Check prices

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Food

7.2

Boarding

7.8

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
582 reviews
KLM
7.7
Good
1,423 reviews
Check prices

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Food

7.2

Boarding

7.8

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
7,594 reviews
KLM
7.7
Good
1,423 reviews
Check prices

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Food

7.2

Boarding

7.8

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 Scandinavian Airlines, Icelandair, and Delta 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 12m. 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$ 591. Other airlines that can offer you cheap pricing are KLM, from C$ 608, and Scandinavian Airlines, from C$ 726. Icelandair is priced at 29% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Oslo one-way?

    To fly one-way, consider booking your trip with SWISS, which is currently one of the cheapest options available, starting at C$ 525. British Airways flights start at C$ 540 while deals on United Airlines start at C$ 614 one-way.

  • 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$ 478). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 758). 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 26 November 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 591AverageC$ 696FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 608AverageC$ 608FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapestC$ 726AverageC$ 780FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapestC$ 904AverageC$ 908FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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

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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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