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 13/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
7 Jan — 14 Jan1
Round-trip
1 adult
Economy
Round-trip
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 8 December 2025.
Sun 7/128:10 a.m.SEA - OSL
2 stops24h 00mUnited Airlines
Sun 14/129:35 a.m.OSL - SEA
2 stops22h 12mUnited Airlines
Deal found 7/12C$ 736
Mon 29/123:05 p.m.SEA - OSL
1 stop20h 55mKLM
Tue 13/15:00 p.m.OSL - SEA
1 stop27h 50mKLM
Deal found 7/12C$ 787
Mon 29/127:13 a.m.SEA - OSL
2 stops19h 37mDelta
Tue 13/17:50 a.m.OSL - SEA
1 stop15h 59mDelta
Deal found 6/12C$ 1,118
Wed 10/1212:36 p.m.SEA - OSL
2 stops20h 04mUnited Airlines
Fri 12/126:15 a.m.OSL - SEA
1 stop14h 55mUnited Airlines
Deal found 6/12C$ 1,160
Tue 16/127:00 a.m.SEA - OSL
2 stops25h 10mUnited Airlines
Sat 20/126:45 a.m.OSL - SEA
2 stops23h 12mUnited Airlines
Deal found 7/12C$ 2,169
Best flights from Seattle to Oslo
Discover carefully curated flight deals from Seattle to Oslo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 8 December 2025.
Sun 19/41:35 p.m.SEA - OSL
1 stop25h 05mBritish Airways
Thu 23/411:40 a.m.OSL - SEA
1 stop32h 55mBritish Airways
Deal found 5/12C$ 673
Sun 10/55:40 p.m.SEA - OSL
1 stop13h 55mFinnair
Fri 29/512:50 p.m.OSL - SEA
1 stop12h 10mFinnair
Deal found 8/12C$ 698
Sun 11/112:57 p.m.SEA - OSL
3 stops43h 13mUnited Airlines
Mon 26/16:45 a.m.OSL - SEA
2 stops25h 30mUnited Airlines
Deal found 7/12C$ 716
Sun 22/34:10 p.m.SEA - OSL
1 stop17h 30mLufthansa
Fri 27/36:15 a.m.OSL - SEA
1 stop14h 55mLufthansa
Deal found 7/12C$ 717
Tue 20/19:25 a.m.SEA - OSL
2 stops20h 20mDelta
Tue 27/19:25 a.m.OSL - SEA
2 stops22h 00mDelta
Deal found 6/12C$ 724
Sun 22/37:00 a.m.SEA - OSL
2 stops26h 10mUnited Airlines
Mon 30/36:35 a.m.OSL - SEA
1 stop14h 45mUnited Airlines
Deal found 7/12C$ 720
Sat 21/311:59 p.m.SEA - OSL
2 stops33h 11mUnited Airlines
Thu 26/36:15 a.m.OSL - SEA
1 stop14h 55mUnited Airlines
Deal found 7/12C$ 725
Tue 20/110:58 a.m.SEA - OSL
2 stops21h 42mUnited Airlines
Tue 27/16:15 a.m.OSL - SEA
3 stops23h 57mUnited Airlines
Deal found 6/12C$ 725
Last-minute flights from Seattle to Oslo
Discover last-minute flight deals from Seattle to Oslo. Data last updated 8 December 2025 and is based on user searches.
Sun 7/128:10 a.m.SEA - OSL
2 stops24h 00mUnited Airlines
Sun 14/129:35 a.m.OSL - SEA
2 stops22h 12mUnited Airlines
Deal found 7/12C$ 736
Mon 29/123:05 p.m.SEA - OSL
1 stop20h 55mKLM
Tue 13/15:00 p.m.OSL - SEA
1 stop27h 50mKLM
Deal found 7/12C$ 787
Tue 6/112:35 p.m.SEA - OSL
2 stops37h 25mUnited Airlines
Wed 21/16:05 a.m.OSL - SEA
3 stops24h 07mUnited Airlines
Deal found 7/12C$ 852
Sat 10/17:15 a.m.SEA - OSL
2 stops19h 35mDelta
Sat 17/19:25 a.m.OSL - SEA
2 stops22h 00mDelta
Deal found 6/12C$ 790
Sat 10/112:40 p.m.SEA - OSL
3 stops41h 40mUnited Airlines
Sat 17/19:35 a.m.OSL - SEA
2 stops34h 55mUnited Airlines
Deal found 6/12C$ 894
Sun 11/112:57 p.m.SEA - OSL
3 stops43h 13mUnited Airlines
Mon 26/16:45 a.m.OSL - SEA
2 stops25h 30mUnited Airlines
Deal found 7/12C$ 716
Fri 16/16:05 a.m.SEA - OSL
2 stops22h 45mDelta
Tue 20/19:25 a.m.OSL - SEA
2 stops21h 24mDelta
Deal found 7/12C$ 713
Tue 20/19:25 a.m.SEA - OSL
2 stops20h 20mDelta
Tue 27/19:25 a.m.OSL - SEA
2 stops22h 00mDelta
Deal found 6/12C$ 724
One-way flights from Seattle to Oslo
Search for one-way flight options from Seattle to Oslo. Find affordable one-way fares based on user searches. Data last updated 8 December 2025.
Sat 13/127:20 a.m.SEA - OSL
2 stops19h 30mDelta
Deal found 7/12C$ 649
Mon 15/129:25 a.m.SEA - OSL
2 stops23h 15mUnited Airlines
Deal found 7/12C$ 656
Sun 14/127:34 p.m.SEA - OSL
2 stops37h 06mUnited Airlines
Deal found 7/12C$ 674
Wed 1/411:44 a.m.SEA - OSL
3 stops44h 31mUnited Airlines
Deal found 8/12C$ 861
Sat 13/128:40 a.m.SEA - OSL
3 stops43h 25mUnited Airlines
Deal found 7/12C$ 1,194
Sat 13/123:05 p.m.SEA - OSL
1 stop20h 55mKLM
Deal found 7/12C$ 1,213
Sun 19/43:40 p.m.SEA - OSL
1 stop11h 55mIcelandair
Deal found 6/12C$ 2,505
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 8 December 2025.
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 8 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
1:35 p.m.-11:40 p.m.
1 stop25h 05m
Oslo Gardermoen
Thu 23/4
11:40 a.m.-11:35 a.m.
1 stop32h 55m
C$ 673
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sun 10/5
5:40 p.m.-4:35 p.m.
1 stop13h 55m
Oslo Gardermoen
Fri 29/5
12:50 p.m.-4:00 p.m.
1 stop12h 10m
C$ 698
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sun 11/1
12:57 p.m.-5:10 p.m.
3 stops43h 13m
Oslo Gardermoen
Mon 26/1
6:45 a.m.-11:15 p.m.
2 stops25h 30m
C$ 716
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sun 22/3
4:10 p.m.-5:40 p.m.
1 stop17h 30m
Oslo Gardermoen
Fri 27/3
6:15 a.m.-1:10 p.m.
1 stop14h 55m
C$ 717
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sun 22/3
7:00 a.m.-5:10 p.m.
2 stops26h 10m
Oslo Gardermoen
Mon 30/3
6:35 a.m.-12:20 p.m.
1 stop14h 45m
C$ 720
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Tue 20/1
9:25 a.m.-2:45 p.m.
2 stops20h 20m
Oslo Gardermoen
Tue 27/1
9:25 a.m.-10:25 p.m.
2 stops22h 00m
C$ 724
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sat 21/3
11:59 p.m.-5:10 p.m.
2 stops33h 11m
Oslo Gardermoen
Thu 26/3
6:15 a.m.-1:10 p.m.
1 stop14h 55m
C$ 725
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Tue 20/1
10:58 a.m.-5:40 p.m.
2 stops21h 42m
Oslo Gardermoen
Tue 27/1
6:15 a.m.-9:12 p.m.
3 stops23h 57m
C$ 725
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sat 13/12
7:20 a.m.-11:50 a.m.
2 stops19h 30m
C$ 649
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 15/12
9:25 a.m.-5:40 p.m.
2 stops23h 15m
C$ 656
Flights are sorted by cheapest round-trip flights first.
Deals found on 7/12
Showing 1-10 of 15 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 5 December 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$ 470). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 742). 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 8 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.
How much does it cost to fly round-trip from Seattle to Oslo?
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 8 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.
Not literally sitting in the very last row in the middle
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 British Airways, Finnair, and United Airlines fly from Seattle to Oslo in about 13h 55m. The time it takes to get you to your destination can typically vary by up to 29h 18m. 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$ 579. Other airlines that can offer you cheap pricing are KLM, from C$ 595, and Scandinavian Airlines, from C$ 711. Icelandair is priced at 30% lower than the current average price of a flight leaving 3 months from now.
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$ 470). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 742). 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.
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 8 December 2025.
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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