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
13 Dec — 20 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 13 November 2025.
Wed 3/123:10 p.m.SEA - OSL
1 stop17h 30mLufthansa
Sun 7/126:05 a.m.OSL - SEA
2 stops22h 11mLufthansa
Deal found 11/11C$ 721
Mon 24/112:05 p.m.SEA - OSL
1 stop17h 15mDelta
Tue 9/126:30 a.m.OSL - SEA
1 stop14h 20mDelta
Deal found 12/11C$ 724
Mon 24/117:00 a.m.SEA - OSL
2 stops25h 10mUnited Airlines
Tue 9/126:15 a.m.OSL - SEA
1 stop14h 55mUnited Airlines
Deal found 12/11C$ 727
Wed 3/122:05 p.m.SEA - OSL
1 stop17h 15mDelta
Sun 7/129:25 a.m.OSL - SEA
1 stop35h 25mDelta
Deal found 11/11C$ 728
Mon 17/116:14 a.m.SEA - OSL
2 stops19h 46mUnited Airlines
Mon 24/116:15 a.m.OSL - SEA
3 stops51h 44mUnited Airlines
Deal found 13/11C$ 737
Wed 12/116:03 a.m.SEA - OSL
2 stops19h 57mUnited Airlines
Sat 15/119:35 a.m.OSL - SEA
2 stops20h 19mUnited Airlines
Deal found 11/11C$ 742
Wed 10/122:05 p.m.SEA - OSL
1 stop17h 15mDelta
Tue 6/11:05 p.m.OSL - SEA
2 stops31h 14mDelta
Deal found 12/11C$ 755
Sun 14/122:05 p.m.SEA - OSL
1 stop15h 40mDelta
Tue 6/11:05 p.m.OSL - SEA
2 stops31h 14mDelta
Deal found 12/11C$ 759
Thu 4/128:10 a.m.SEA - OSL
2 stops30h 35mUnited Airlines
Mon 15/129:35 a.m.OSL - SEA
2 stops21h 53mUnited Airlines
Deal found 12/11C$ 761
Thu 11/126:00 a.m.SEA - OSL
2 stops27h 15mDelta
Tue 6/17:50 a.m.OSL - SEA
2 stops36h 29mDelta
Deal found 12/11C$ 771
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 13 November 2025.
Mon 16/33:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
Tue 7/44:30 p.m.OSL - SEA
1 stop13h 15mIcelandair
Deal found 11/11C$ 594
Tue 17/31:40 p.m.SEA - OSL
2 stops17h 40mScandinavian Airlines
Wed 8/41:05 p.m.OSL - SEA
1 stop18h 11mScandinavian Airlines
Deal found 11/11C$ 679
Tue 17/39:55 a.m.SEA - OSL
2 stops19h 55mDelta
Wed 8/42:15 p.m.OSL - SEA
2 stops18h 56mDelta
Deal found 12/11C$ 720
Wed 3/123:10 p.m.SEA - OSL
1 stop17h 30mLufthansa
Sun 7/126:05 a.m.OSL - SEA
2 stops22h 11mLufthansa
Deal found 12/11C$ 721
Mon 24/117:00 a.m.SEA - OSL
2 stops25h 10mUnited Airlines
Tue 9/126:15 a.m.OSL - SEA
1 stop14h 55mUnited Airlines
Deal found 12/11C$ 727
Mon 16/33:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
Wed 8/41:50 p.m.OSL - SEA
1 stop15h 55mIcelandair
Deal found 11/11C$ 594
Fri 27/211:31 a.m.SEA - OSL
2 stops17h 44mScandinavian Airlines
Thu 12/38:00 a.m.OSL - SEA
2 stops22h 16mScandinavian Airlines
Deal found 12/11C$ 712
Sun 10/57:20 a.m.SEA - OSL
2 stops18h 45mScandinavian Airlines
Fri 29/56:00 a.m.OSL - SEA
1 stop16h 45mScandinavian Airlines
Deal found 11/11C$ 721
Last-minute flights from Seattle to Oslo
Discover last-minute flight deals from Seattle to Oslo. Data last updated 13 November 2025 and is based on user searches.
Mon 17/116:14 a.m.SEA - OSL
2 stops19h 46mUnited Airlines
Mon 24/116:15 a.m.OSL - SEA
3 stops51h 44mUnited Airlines
Deal found 13/11C$ 737
Mon 24/112:05 p.m.SEA - OSL
1 stop17h 15mDelta
Tue 9/126:30 a.m.OSL - SEA
1 stop14h 20mDelta
Deal found 12/11C$ 724
Mon 24/117:00 a.m.SEA - OSL
2 stops25h 10mUnited Airlines
Tue 9/126:15 a.m.OSL - SEA
1 stop14h 55mUnited Airlines
Deal found 12/11C$ 727
Wed 3/123:10 p.m.SEA - OSL
1 stop17h 30mLufthansa
Sun 7/126:05 a.m.OSL - SEA
2 stops22h 11mLufthansa
Deal found 11/11C$ 721
Wed 3/122:05 p.m.SEA - OSL
1 stop17h 15mDelta
Sun 7/129:25 a.m.OSL - SEA
1 stop35h 25mDelta
Deal found 11/11C$ 728
Thu 4/128:10 a.m.SEA - OSL
2 stops30h 35mUnited Airlines
Mon 15/129:35 a.m.OSL - SEA
2 stops21h 53mUnited Airlines
Deal found 12/11C$ 761
Wed 10/122:05 p.m.SEA - OSL
1 stop17h 15mDelta
Tue 6/11:05 p.m.OSL - SEA
2 stops31h 14mDelta
Deal found 12/11C$ 755
Wed 10/122:05 p.m.SEA - OSL
1 stop17h 15mDelta
Wed 7/112:40 p.m.OSL - SEA
2 stops37h 10mDelta
Deal found 12/11C$ 785
Thu 11/126:00 a.m.SEA - OSL
2 stops27h 15mDelta
Tue 6/17:50 a.m.OSL - SEA
2 stops36h 29mDelta
Deal found 12/11C$ 771
Sun 14/122:05 p.m.SEA - OSL
1 stop15h 40mDelta
Tue 6/17:50 a.m.OSL - SEA
2 stops36h 29mDelta
Deal found 12/11C$ 759
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 13 November 2025.
Wed 1/41:48 p.m.SEA - OSL
2 stops20h 27mBritish Airways
Deal found 13/11C$ 544
Sun 28/1211:59 p.m.SEA - OSL
2 stops32h 41mUnited Airlines
Deal found 12/11C$ 573
Wed 24/128:10 a.m.SEA - OSL
2 stops41h 50mUnited Airlines
Deal found 12/11C$ 594
Sat 27/1211:59 p.m.SEA - OSL
2 stops32h 41mUnited Airlines
Deal found 12/11C$ 612
Tue 23/1210:55 p.m.SEA - OSL
2 stops32h 20mDelta
Deal found 12/11C$ 733
Wed 1/47:00 a.m.SEA - OSL
3 stops31h 55mUnited Airlines
Deal found 13/11C$ 741
Wed 3/1210:40 a.m.SEA - OSL
3 stops21h 50mUnited Airlines
Deal found 12/11C$ 747
Fri 26/1211:59 p.m.SEA - OSL
2 stops32h 41mUnited Airlines
Deal found 12/11C$ 839
Sun 21/123:05 p.m.SEA - OSL
1 stop20h 55mKLM
Deal found 12/11C$ 1,370
Mon 22/121:35 p.m.SEA - OSL
3 stops38h 30mUnited Airlines
Deal found 12/11C$ 1,626
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 13 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 13 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
Mon 16/3
3:35 p.m.-11:35 a.m.
1 stop12h 00m
Oslo Gardermoen
Tue 7/4
4:30 p.m.-8:45 p.m.
1 stop13h 15m
C$ 594
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 16/3
3:35 p.m.-11:35 a.m.
1 stop12h 00m
Oslo Gardermoen
Wed 8/4
1:50 p.m.-8:45 p.m.
1 stop15h 55m
C$ 594
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Tue 17/3
1:40 p.m.-3:20 p.m.
2 stops17h 40m
Oslo Gardermoen
Wed 8/4
1:05 p.m.-10:16 p.m.
1 stop18h 11m
C$ 679
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Fri 27/2
11:31 a.m.-2:15 p.m.
2 stops17h 44m
Oslo Gardermoen
Thu 12/3
8:00 a.m.-10:16 p.m.
2 stops22h 16m
C$ 712
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Tue 17/3
9:55 a.m.-1:50 p.m.
2 stops19h 55m
Oslo Gardermoen
Wed 8/4
2:15 p.m.-12:11 a.m.
2 stops18h 56m
C$ 720
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Wed 3/12
3:10 p.m.-5:40 p.m.
1 stop17h 30m
Oslo Gardermoen
Sun 7/12
6:05 a.m.-7:16 p.m.
2 stops22h 11m
C$ 721
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sun 10/5
7:20 a.m.-11:05 a.m.
2 stops18h 45m
Oslo Gardermoen
Fri 29/5
6:00 a.m.-1:45 p.m.
1 stop16h 45m
C$ 721
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 24/11
7:00 a.m.-5:10 p.m.
2 stops25h 10m
Oslo Gardermoen
Tue 9/12
6:15 a.m.-12:10 p.m.
1 stop14h 55m
C$ 727
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Wed 1/4
1:48 p.m.-7:15 p.m.
2 stops20h 27m
C$ 544
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sun 28/12
11:59 p.m.-5:40 p.m.
2 stops32h 41m
C$ 573
Flights are sorted by cheapest round-trip flights first.
Deals found on 13/11
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 7 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$ 752). 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 13 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 13 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 Icelandair and Scandinavian Airlines fly from Seattle to Oslo in about 12h. The time it takes to get you to your destination can typically vary by up to 5h 40m. 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$ 587. Other airlines that can offer you cheap pricing are KLM, from C$ 603, and Scandinavian Airlines, from C$ 721. 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 British Airways, which is currently one of the cheapest options available, starting at C$ 544. United Airlines flights start at C$ 573 while deals on KLM start at C$ 733 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$ 474). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 752). 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.
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on 13 November 2025.
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 13 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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