$248+ Cheap flights from Seattle (SEA) to Oslo Gardermoen (OSL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Oslo Gardermoen with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Oslo Gardermoen
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Last-minute
One-way
Cheapest flights from Seattle to Oslo GardermoenExplore the most affordable flight options available from Seattle to Oslo Gardermoen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
Explore the most affordable flight options available from Seattle to Oslo Gardermoen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
This Sembo deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop12h 00m
Tue 12/81:10 pm -
1 stop12h 50m
Deal found 10/20![Icelandair logo]()
$397
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/82:35 pm -
1 stop12h 00m
Tue 12/151:10 pm -
1 stop12h 50m
Deal found 10/21![Icelandair logo]()
$443
This Booking.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/72:35 pm -
1 stop12h 00m
Tue 12/151:10 pm -
1 stop12h 50m
Deal found 10/21![Icelandair logo]()
$449
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:35 pm -
1 stop12h 00m
Wed 12/91:10 pm -
1 stop12h 50m
Deal found 10/23![Icelandair logo]()
$473
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop12h 00m
Thu 12/31:10 pm -
1 stop12h 50m
Deal found 10/23![Icelandair logo]()
$475
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:50 am -
2 stops27h 05m
Sat 10/316:25 pm -
1 stop27h 35m
Deal found 10/22![Multiple Airlines logo]()
$483
This Flightnetwork deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:15 pm -
2 stops41h 25m
Tue 12/86:25 pm -
1 stop27h 35m
Deal found 10/20![Multiple Airlines logo]()
$490
This oojo deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:35 pm -
1 stop12h 00m
Fri 12/111:10 pm -
1 stop12h 50m
Deal found 10/20![Icelandair logo]()
$493
This oojo deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/92:35 pm -
1 stop21h 00m
Mon 1/111:10 pm -
1 stop12h 50m
Deal found 10/24![Icelandair logo]()
$494
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:50 pm -
1 stop17h 50m
Thu 11/266:15 am -
1 stop14h 45m
Deal found 10/21![United Airlines logo]()
$497
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:50 pm -
1 stop17h 50m
Tue 12/811:50 am -
1 stop34h 10m
Deal found 10/23![United Airlines logo]()
$500
Best flights from Seattle to Oslo GardermoenDiscover carefully curated flight deals from Seattle to Oslo Gardermoen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
Discover carefully curated flight deals from Seattle to Oslo Gardermoen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/178:08 am -
2 stops24h 02m
Sat 1/306:15 am -
1 stop14h 45m
Deal found 10/23![United Airlines logo]()
$511
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/87:00 am -
2 stops25h 10m
Tue 3/236:45 am -
2 stops21h 55m
Deal found 10/20![United Airlines logo]()
$515
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:50 pm -
1 stop16h 55m
Tue 12/156:45 am -
2 stops24h 58m
Deal found 10/21![United Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:50 pm -
1 stop14h 15m
Fri 12/116:45 am -
2 stops21h 01m
Deal found 10/20![United Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:09 am -
2 stops24h 01m
Tue 12/11:55 pm -
2 stops40h 04m
Deal found 10/23![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/11:50 pm -
1 stop16h 55m
Thu 2/46:15 am -
1 stop14h 45m
Deal found 10/24![United Airlines logo]()
$525
Last-minute flights from Seattle to Oslo GardermoenDiscover last-minute flight deals from Seattle to Oslo Gardermoen. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Oslo Gardermoen. Data last updated October 25, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:50 am -
2 stops27h 05m
Sat 10/316:25 pm -
1 stop27h 35m
Deal found 10/22![Multiple Airlines logo]()
$483
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/312:20 pm -
2 stops20h 20m
Thu 11/126:15 am -
1 stop14h 45m
Deal found 10/24![United Airlines logo]()
$502
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:50 pm -
1 stop17h 50m
Thu 11/266:15 am -
1 stop14h 45m
Deal found 10/21![United Airlines logo]()
$497
This Sembo deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop12h 00m
Tue 12/81:10 pm -
1 stop12h 50m
Deal found 10/20![Icelandair logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop12h 00m
Thu 12/31:10 pm -
1 stop12h 50m
Deal found 10/23![Icelandair logo]()
$475
This Flightnetwork deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:15 pm -
2 stops41h 25m
Tue 12/86:25 pm -
1 stop27h 35m
Deal found 10/20![Multiple Airlines logo]()
$490
This Air Canada deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:05 pm -
2 stops37h 35m
Sat 12/511:50 am -
2 stops39h 32m
Deal found 10/23![Air Canada logo]()
$501
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:09 am -
2 stops24h 01m
Sat 12/56:15 am -
1 stop14h 45m
Deal found 10/22![United Airlines logo]()
$505
This Air Canada deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/307:05 pm -
2 stops37h 35m
Wed 12/96:15 am -
2 stops23h 44m
Deal found 10/23![Air Canada logo]()
$506
One-way flights from Seattle to Oslo GardermoenSearch for one-way flight options from Seattle to Oslo Gardermoen. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from Seattle to Oslo Gardermoen. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This Booking.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/72:35 pm -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Icelandair logo]()
$248
This Booking.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/117:00 pm -
1 stop32h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Icelandair logo]()
$250
This Mytrip deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/183:40 pm -
1 stop11h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Icelandair logo]()
$252
This Cheapflightsfares deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/62:35 pm -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Icelandair logo]()
$259
This Cheapflightsfares deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/92:35 pm -
1 stop21h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Icelandair logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/92:35 pm -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Icelandair logo]()
$269
This deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/12:35 pm -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Icelandair logo]()
$292
This Booking.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/303:35 pm -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Icelandair logo]()
$297
This Mytrip deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/12:35 pm -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Icelandair logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/292:35 pm -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Icelandair logo]()
$315
Find flight deals from Seattle to Oslo Gardermoen
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Oslo Gardermoen (OSL). 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 October 25, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $397 (Sembo) |
One-way from | $248 (Booking.com) |
Popular in | December |
Cheapest in | January |
Average price | $526 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Oslo Gardermoen 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 7,457,451 searches. Data last updated October 25, 2026.
Use the filters below to find and compare flights from Seattle to Oslo Gardermoen Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Sun 4/18
3:40 pm-12:35 pm
1 stop11h 55m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$252
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Sat 3/20
7:00 pm-11:35 am
1 stop32h 35m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$326
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Mon 2/8
6:45 pm-10:55 am
1 stop31h 10m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$329
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Sun 4/18
11:16 am-11:40 pm
2 stops27h 24m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$330
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Sun 4/18
7:00 pm-7:35 am
3 stops27h 35m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$340
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Mon 3/1
2:35 pm-1:35 pm
3 stops38h 00m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$342
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Thu 12/3
2:35 pm-11:35 am
1 stop12h 00m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$343
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Sat 3/20
7:00 pm-3:45 pm
2 stops36h 45m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$349
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Tue 3/16
8:30 am-3:45 pm
3 stops23h 15m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$353
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Sun 1/17
8:08 am-5:10 pm
2 stops24h 02m
Oslo Gardermoen
Sat 1/30
6:15 am-12:00 pm
1 stop14h 45m
$511
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from Seattle to Oslo Gardermoen
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Oslo Gardermoen in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-Oslo Gardermoen Airport flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Seattle-Oslo Gardermoen Airport flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Seattle-Oslo Gardermoen Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Oslo Gardermoen Airport flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Oslo Gardermoen Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Oslo Gardermoen
Have a flexible travel schedule? Discover the best time to fly to Oslo Gardermoen from Seattle with our price prediction graph.
SEA-OSL
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 Gardermoen Airport
Prices
More
How far ahead should I book a flight from Seattle to Oslo Gardermoen Airport?
To ensure you get the cheapest price possible for a flight from Seattle to Oslo Gardermoen Airport, you should look to book at least 86 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 Gardermoen Airport?
Currently, January is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $484). Flying from Seattle to Oslo Gardermoen Airport in December is currently the most expensive (average of $776). 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.
How much does it cost to fly round-trip from Seattle to Oslo Gardermoen Airport?
Airfare is below average for this route at the moment.
Seattle to Oslo Gardermoen Airport flights typically cost between $479 and $655 in November.The cheapest round-trip price found within the last 5 days was $397 on Icelandair (Nov 23-Dec 8).
What’s the top layover airport for flights from Seattle to Oslo Gardermoen Airport?
Share of 1-stop round-trip flights from Seattle to Oslo Gardermoen Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Reykjavik (KEF) – chosen by Cheapflights users on 63% of 1-stop itineraries from Seattle to Oslo Gardermoen Airport on Cheapflights.
What’s the cheapest layover airport for flights from Seattle to Oslo Gardermoen Airport?
Average round-trip fare for 1-stop flights from Seattle to Oslo Gardermoen Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Frankfurt am Main (FRA) is the most affordable 1-stop option, with an average round-trip price of $494.
What’s the fastest layover option from Seattle to Oslo Gardermoen Airport?
Shortest average travel time for 1-stop one-way flights from Seattle to Oslo Gardermoen Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Reykjavik (KEF) have the shortest average one-way travel time for 1-stop routes: 11h 32m.
Which airport typically offers the quickest layover for flights from Seattle to Oslo Gardermoen Airport?
Average layover duration for 1-stop one-way flights from Seattle to Oslo Gardermoen Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 1h 48m.
Reviews of airlines servicing Oslo Gardermoen
Get insights into the airlines that provide service to Oslo Gardermoen. 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 Gardermoen. Reviews last updated October 25, 2026.
Peruse reviews from past customers who have flown with KLM,Delta, andScandinavian Airlines from Seattle to Oslo Gardermoen Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Comfort
7.7
Crew
8.4
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - AMS
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Comfort
7.7
Crew
8.4
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - AMS
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Comfort
7.7
Crew
8.4
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - AMS
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Comfort
7.7
Crew
8.4
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - AMS
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Comfort
7.7
Crew
8.4
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - AMS
Overall
7.8
Entertainment
7.2
Food
7.4
Boarding
7.8
Comfort
7.7
Crew
8.4
Reviews
1 / 20
2.0
MediocreArtem,Oct 2026
FCO - AMS
Related info for your journey
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Other flights to Oslo Gardermoen
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Top 8 airlines flying from Seattle to Oslo Gardermoen
Discover the top 8 airlines that operate flights from Seattle to Oslo Gardermoen. 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 7,457,451 searches. Data last updated October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$351 | Average$574 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$395 | Average$585 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$426 | Average$667 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$485 | Average$523 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$493 | Average$640 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$498 | Average$719 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$499 | Average$543 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$522 | Average$648 | FlexibilityNo cancel fee | On-time75% |