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Cheap flights from Seattle to Oslo from C$ 246

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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
8 Jul — 15 Jul1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo are usually found in November or October, booked 79 days in advance, depart on a Monday or Wednesday and return on a Monday

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 3 July 2025.

Round-trip from

C$ 585

One-way from

C$ 246

Popular in

June

Cheapest in

November

Average price

C$ 1,036
Icelandair
  • Icelandair
  • 20/8-31/8
  • 2 total stops
  • 39h 45m total
  • Seattle to Oslo
Icelandair
  • Icelandair
  • 7/10
  • 1 total stop
  • 11h 40m total
  • Seattle to Oslo
Highest demand for flights based on searches. 13% potential increase in price (C$ 189 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease (C$ 36 potential savings vs. average RT price).
Average for round-trip flights in July 2025

Find flight deals from Seattle to Oslo

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 July 2025.

Wed 20/83:45 p.m.SEA - OSL
1 stop11h 50mIcelandair
Sun 31/84:30 p.m.OSL - SEA
1 stop27h 55mIcelandair
Deal found 1/7C$ 585
Tue 28/1010:32 a.m.SEA - OSL
2 stops22h 03mMultiple Airlines
Fri 7/118:25 a.m.OSL - SEA
2 stops19h 33mMultiple Airlines
Deal found 2/7C$ 645
Tue 28/102:35 p.m.SEA - OSL
1 stop15h 40mBritish Airways
Fri 7/117:15 a.m.OSL - SEA
1 stop18h 40mBritish Airways
Deal found 1/7C$ 649
Tue 28/1011:20 a.m.SEA - OSL
2 stops21h 05mDelta
Fri 7/116:20 a.m.OSL - SEA
1 stop15h 55mDelta
Deal found 3/7C$ 678
Wed 15/107:44 a.m.SEA - OSL
2 stops23h 51mFinnair
Mon 20/108:35 p.m.OSL - SEA
2 stops31h 52mFinnair
Deal found 3/7C$ 686
Fri 24/104:20 p.m.SEA - OSL
1 stop14h 40mScandinavian Airlines
Mon 10/1112:10 p.m.OSL - SEA
2 stops20h 14mScandinavian Airlines
Deal found 3/7C$ 698
Sun 26/104:10 p.m.SEA - OSL
1 stop17h 35mUnited Airlines
Mon 3/111:50 p.m.OSL - SEA
2 stops41h 51mUnited Airlines
Deal found 30/6C$ 717
Mon 29/122:00 p.m.SEA - OSL
1 stop13h 55mLufthansa
Tue 13/16:15 a.m.OSL - SEA
1 stop14h 55mLufthansa
Deal found 1/7C$ 719

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 July 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

Wed 20/8

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

1 stop11h 50m

Oslo Gardermoen

Sun 31/8

4:30 p.m.-11:25 a.m.

1 stop27h 55m

C$ 585

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 28/10

10:32 a.m.-4:35 p.m.

2 stops22h 03m

Oslo Gardermoen

Fri 7/11

8:25 a.m.-6:58 p.m.

2 stops19h 33m

C$ 645

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 28/10

2:35 p.m.-2:15 p.m.

1 stop15h 40m

Oslo Gardermoen

Fri 7/11

7:15 a.m.-4:55 p.m.

1 stop18h 40m

C$ 649

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 28/10

11:20 a.m.-4:25 p.m.

2 stops21h 05m

Oslo Gardermoen

Fri 7/11

6:20 a.m.-1:15 p.m.

1 stop15h 55m

C$ 678

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 15/10

7:44 a.m.-4:35 p.m.

2 stops23h 51m

Oslo Gardermoen

Mon 20/10

8:35 p.m.-7:27 p.m.

2 stops31h 52m

C$ 686

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 24/10

4:20 p.m.-4:00 p.m.

1 stop14h 40m

Oslo Gardermoen

Mon 10/11

12:10 p.m.-11:24 p.m.

2 stops20h 14m

C$ 698

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 26/10

4:10 p.m.-5:45 p.m.

1 stop17h 35m

Oslo Gardermoen

Mon 3/11

1:50 p.m.-10:41 p.m.

2 stops41h 51m

C$ 717

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 29/12

2:00 p.m.-12:55 p.m.

1 stop13h 55m

Oslo Gardermoen

Fri 9/1

6:15 a.m.-12:10 p.m.

1 stop14h 55m

C$ 719

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 7/10

7:00 p.m.-3:40 p.m.

1 stop11h 40m

C$ 246

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 22/7

10:41 p.m.-12:55 p.m.

1 stop29h 14m

C$ 425

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 16 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 27 June 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Oslo, you should look to book at least 79 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, April is the cheapest month in which you can book a flight from Seattle to Oslo (average of C$ 666). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 949). 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 July 2025.

It’s typically best to fly out from Seattle to Oslo in the afternoon. Doing so could potentially save you 32% on the flight price compared to flying in the morning, 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 July 2025.
Read reviews from past customers who have flown Delta,KLM, andFinnair 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.

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • 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$ 585. Other airlines that can offer you cheap pricing are British Airways, from C$ 649, and Delta, from C$ 678. Icelandair is priced at 34% 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 Icelandair, which is currently one of the cheapest options available, starting at C$ 246. British Airways flights start at C$ 522 while deals on Lufthansa start at C$ 530 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, April is the cheapest month in which you can book a flight from Seattle to Oslo (average of C$ 666). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 949). 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

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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.

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 July 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapestC$ 585AverageC$ 618FlexibilityNo cancel feeOn-time75%
Search KLM flights
IcelandairCheapestC$ 634AverageC$ 946FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapestC$ 699AverageC$ 748FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapestC$ 870AverageC$ 874FlexibilityNo 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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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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