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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
5 Dec — 12 Dec1
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
Find 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 5 November 2025.
Fri 5/127:35 a.m.SEA - OSL
2 stops21h 15mDelta
Thu 11/126:30 a.m.OSL - SEA
1 stop14h 20mDelta
Deal found 5/11C$ 711
Wed 3/122:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
Sun 7/129:30 p.m.OSL - SEA
1 stop28h 30mIcelandair
Deal found 4/11C$ 714
Thu 4/124:48 p.m.SEA - OSL
1 stop17h 02mDelta
Mon 15/127:45 a.m.OSL - SEA
2 stops21h 50mDelta
Deal found 4/11C$ 719
Tue 2/1211:26 a.m.SEA - OSL
2 stops18h 19mDelta
Tue 9/126:30 a.m.OSL - SEA
1 stop14h 20mDelta
Deal found 4/11C$ 721
Sun 16/118:00 a.m.SEA - OSL
2 stops24h 10mUnited Airlines
Sat 22/116:15 a.m.OSL - SEA
1 stop14h 55mUnited Airlines
Deal found 4/11C$ 735
Wed 3/121:40 p.m.SEA - OSL
2 stops25h 05mLufthansa
Sun 7/126:05 a.m.OSL - SEA
2 stops22h 11mLufthansa
Deal found 4/11C$ 738
Mon 24/118:00 a.m.SEA - OSL
2 stops30h 30mMultiple Airlines
Tue 9/126:15 a.m.OSL - SEA
1 stop14h 55mMultiple Airlines
Deal found 5/11C$ 739
Tue 2/123:45 p.m.SEA - OSL
2 stops40h 55mUnited Airlines
Tue 9/126:15 a.m.OSL - SEA
3 stops23h 45mUnited Airlines
Deal found 4/11C$ 741
Wed 3/122:05 p.m.SEA - OSL
1 stop15h 40mDelta
Sun 7/127:50 a.m.OSL - SEA
2 stops35h 29mDelta
Deal found 4/11C$ 742
Mon 24/1112:35 p.m.SEA - OSL
2 stops19h 55mUnited Airlines
Tue 9/126:15 a.m.OSL - SEA
3 stops23h 45mUnited Airlines
Deal found 5/11C$ 746
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 5 November 2025.
Thu 4/124:48 p.m.SEA - OSL
1 stop17h 02mDelta
Mon 15/127:45 a.m.OSL - SEA
2 stops21h 50mDelta
Deal found 4/11C$ 719
Sun 15/28:17 a.m.SEA - OSL
2 stops23h 53mUnited Airlines
Sun 22/26:10 a.m.OSL - SEA
2 stops25h 06mUnited Airlines
Deal found 5/11C$ 735
Sat 14/211:59 p.m.SEA - OSL
2 stops32h 11mMultiple Airlines
Sat 21/26:15 a.m.OSL - SEA
2 stops22h 01mMultiple Airlines
Deal found 5/11C$ 736
Wed 3/121:40 p.m.SEA - OSL
2 stops25h 05mLufthansa
Sun 7/126:05 a.m.OSL - SEA
2 stops22h 11mLufthansa
Deal found 4/11C$ 738
Tue 2/1211:26 a.m.SEA - OSL
2 stops18h 19mDelta
Tue 9/126:30 a.m.OSL - SEA
1 stop14h 20mDelta
Deal found 4/11C$ 721
Tue 27/18:10 a.m.SEA - OSL
2 stops17h 50mUnited Airlines
Fri 6/26:15 a.m.OSL - SEA
3 stops25h 28mUnited Airlines
Deal found 4/11C$ 736
Mon 24/118:00 a.m.SEA - OSL
2 stops30h 30mMultiple Airlines
Tue 9/126:15 a.m.OSL - SEA
1 stop14h 55mMultiple Airlines
Deal found 5/11C$ 739
Fri 5/127:35 a.m.SEA - OSL
2 stops21h 15mDelta
Thu 11/126:30 a.m.OSL - SEA
2 stops18h 51mDelta
Deal found 5/11C$ 725
Mon 24/117:20 a.m.SEA - OSL
2 stops16h 20mDelta
Tue 9/126:30 a.m.OSL - SEA
2 stops26h 28mDelta
Deal found 5/11C$ 739
Last-minute flights from Seattle to Oslo
Discover last-minute flight deals from Seattle to Oslo. Data last updated 5 November 2025 and is based on user searches.
Sun 16/118:00 a.m.SEA - OSL
2 stops24h 10mUnited Airlines
Sat 22/116:15 a.m.OSL - SEA
1 stop14h 55mUnited Airlines
Deal found 4/11C$ 735
Mon 24/118:00 a.m.SEA - OSL
2 stops30h 30mMultiple Airlines
Tue 9/126:15 a.m.OSL - SEA
1 stop14h 55mMultiple Airlines
Deal found 5/11C$ 739
Mon 24/1112:35 p.m.SEA - OSL
2 stops19h 55mUnited Airlines
Tue 9/126:15 a.m.OSL - SEA
3 stops23h 45mUnited Airlines
Deal found 5/11C$ 746
Tue 2/1211:26 a.m.SEA - OSL
2 stops18h 19mDelta
Tue 9/126:30 a.m.OSL - SEA
1 stop14h 20mDelta
Deal found 4/11C$ 721
Tue 2/123:45 p.m.SEA - OSL
2 stops40h 55mUnited Airlines
Tue 9/126:15 a.m.OSL - SEA
3 stops23h 45mUnited Airlines
Deal found 4/11C$ 741
Wed 3/122:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
Sun 7/129:30 p.m.OSL - SEA
1 stop28h 30mIcelandair
Deal found 3/11C$ 714
Wed 3/121:40 p.m.SEA - OSL
2 stops25h 05mLufthansa
Sun 7/126:05 a.m.OSL - SEA
2 stops22h 11mLufthansa
Deal found 4/11C$ 738
Wed 3/122:05 p.m.SEA - OSL
1 stop15h 40mDelta
Sun 7/127:50 a.m.OSL - SEA
2 stops35h 29mDelta
Deal found 4/11C$ 742
Thu 4/124:48 p.m.SEA - OSL
1 stop17h 02mDelta
Mon 15/127:45 a.m.OSL - SEA
2 stops21h 50mDelta
Deal found 4/11C$ 719
Fri 5/127:35 a.m.SEA - OSL
2 stops21h 15mDelta
Thu 11/126:30 a.m.OSL - SEA
1 stop14h 20mDelta
Deal found 5/11C$ 711
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 5 November 2025.
Wed 3/127:20 a.m.SEA - OSL
2 stops19h 30mDelta
Deal found 5/11C$ 560
Fri 27/23:10 p.m.SEA - OSL
1 stop23h 30mUnited Airlines
Deal found 4/11C$ 566
Thu 26/26:50 p.m.SEA - OSL
1 stop30h 40mBritish Airways
Deal found 4/11C$ 580
Wed 3/128:40 a.m.SEA - OSL
3 stops30h 05mUnited Airlines
Deal found 4/11C$ 612
Tue 23/121:43 p.m.SEA - OSL
2 stops49h 02mUnited Airlines
Deal found 4/11C$ 632
Thu 25/128:57 a.m.SEA - OSL
2 stops19h 03mUnited Airlines
Deal found 4/11C$ 645
Thu 25/123:05 p.m.SEA - OSL
1 stop20h 55mKLM
Deal found 4/11C$ 718
Mon 22/1211:59 p.m.SEA - OSL
2 stops32h 11mUnited Airlines
Deal found 4/11C$ 848
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 5 November 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 5 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
Thu 4/12
4:48 p.m.-6:50 p.m.
1 stop17h 02m
Oslo Gardermoen
Mon 15/12
7:45 a.m.-8:35 p.m.
2 stops21h 50m
C$ 719
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Tue 2/12
11:26 a.m.-2:45 p.m.
2 stops18h 19m
Oslo Gardermoen
Tue 9/12
6:30 a.m.-11:50 a.m.
1 stop14h 20m
C$ 721
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Fri 5/12
7:35 a.m.-1:50 p.m.
2 stops21h 15m
Oslo Gardermoen
Thu 11/12
6:30 a.m.-4:21 p.m.
2 stops18h 51m
C$ 725
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sun 15/2
8:17 a.m.-5:10 p.m.
2 stops23h 53m
Oslo Gardermoen
Sun 22/2
6:10 a.m.-10:16 p.m.
2 stops25h 06m
C$ 735
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sat 14/2
11:59 p.m.-5:10 p.m.
2 stops32h 11m
Oslo Gardermoen
Sat 21/2
6:15 a.m.-7:16 p.m.
2 stops22h 01m
C$ 736
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Tue 27/1
8:10 a.m.-11:00 a.m.
2 stops17h 50m
Oslo Gardermoen
Fri 6/2
6:15 a.m.-10:43 p.m.
3 stops25h 28m
C$ 736
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Wed 3/12
1:40 p.m.-11:45 p.m.
2 stops25h 05m
Oslo Gardermoen
Sun 7/12
6:05 a.m.-7:16 p.m.
2 stops22h 11m
C$ 738
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 24/11
8:00 a.m.-11:30 p.m.
2 stops30h 30m
Oslo Gardermoen
Tue 9/12
6:15 a.m.-12:10 p.m.
1 stop14h 55m
C$ 739
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 24/11
7:20 a.m.-8:40 a.m.
2 stops16h 20m
Oslo Gardermoen
Tue 9/12
6:30 a.m.-11:58 p.m.
2 stops26h 28m
C$ 739
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Wed 3/12
7:20 a.m.-11:50 a.m.
2 stops19h 30m
C$ 560
Flights are sorted by cheapest round-trip flights first.
Deals found on 5/11
Showing 1-10 of 18 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 31 October 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$ 479). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 756). 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 5 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.
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 5 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.
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.
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.
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.
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.
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, British Airways, and Delta fly from Seattle to Oslo in about 16h 35m. The time it takes to get you to your destination can typically vary by up to 2h 49m. 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$ 590. Other airlines that can offer you cheap pricing are KLM, from C$ 606, and Scandinavian Airlines, from C$ 725. 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 Delta, which is currently one of the cheapest options available, starting at C$ 560. United Airlines flights start at C$ 566 while deals on British Airways start at C$ 580 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$ 479). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 756). 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 5 November 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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