$198+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Oct 7 — Oct 141
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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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Best
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 September 7, 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 September 7, 2026.
This Mytrip deal was found by Cheapflights users on 9/4. 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.
Sat 10/243:40 pm -
1 stop11h 55m
Sat 10/311:10 pm -
1 stop12h 50m
Deal found 9/4![Icelandair logo]()
$398
This oojo deal was found by Cheapflights users on 9/3. 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.
Mon 10/193:40 pm -
1 stop11h 55m
Wed 10/281:10 pm -
1 stop12h 50m
Deal found 9/3![Icelandair logo]()
$399
This oojo deal was found by Cheapflights users on 9/5. 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 10/213:40 pm -
1 stop11h 35m
Sun 10/253:30 pm -
1 stop34h 30m
Deal found 9/5![Icelandair logo]()
$401
This FlightHub deal was found by Cheapflights users on 9/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:40 pm -
1 stop11h 55m
Fri 10/301:10 pm -
1 stop12h 50m
Deal found 9/5![Icelandair logo]()
$405
This FlightHub deal was found by Cheapflights users on 9/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:40 pm -
1 stop11h 55m
Thu 10/299:30 pm -
1 stop28h 30m
Deal found 9/5![Icelandair logo]()
$407
This Trip.com deal was found by Cheapflights users on 9/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:35 pm -
1 stop12h 00m
Mon 12/71:10 pm -
1 stop12h 50m
Deal found 9/4![Icelandair logo]()
$427
This Scandinavian Airlines deal was found by Cheapflights users on 9/5. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:55 pm -
1 stop31h 15m
Mon 10/51:35 pm -
1 stop33h 10m
Deal found 9/5![Scandinavian Airlines logo]()
$434
This oojo deal was found by Cheapflights users on 9/3. 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.
Thu 12/102:35 pm -
1 stop12h 00m
Sun 12/209:30 pm -
1 stop28h 30m
Deal found 9/3![Icelandair logo]()
$437
This oojo deal was found by Cheapflights users on 9/5. 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.
Tue 10/207:00 pm -
1 stop11h 25m
Fri 10/301:10 pm -
1 stop12h 50m
Deal found 9/5![Icelandair logo]()
$449
This oojo deal was found by Cheapflights users on 9/2. 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.
Sun 10/43:55 pm -
1 stop14h 00m
Fri 10/94:00 pm -
1 stop30h 45m
Deal found 9/2![Scandinavian Airlines logo]()
$451
This FlightHub deal was found by Cheapflights users on 9/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 pm -
1 stop11h 25m
Sat 10/311:10 pm -
1 stop12h 50m
Deal found 9/5![Icelandair logo]()
$455
This FlightHub deal was found by Cheapflights users on 9/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 pm -
1 stop11h 25m
Thu 10/299:30 pm -
1 stop28h 30m
Deal found 9/5![Icelandair logo]()
$457
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 September 7, 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 September 7, 2026.
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/216:50 pm -
1 stop14h 05m
Sun 10/257:15 am -
1 stop14h 45m
Deal found 9/2![United Airlines logo]()
$502
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/132:20 pm -
1 stop18h 50m
Sat 2/209:30 am -
2 stops21h 35m
Deal found 9/6![Delta logo]()
$649
This United deal was found by Cheapflights users on 9/4. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:50 pm -
2 stops29h 15m
Thu 9/247:15 pm -
1 stop25h 40m
Deal found 9/4![Multiple Airlines logo]()
$652
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Sat 10/1710:48 pm -
2 stops33h 27m
Sat 10/246:15 am -
1 stop15h 05m
Deal found 9/2![United Airlines logo]()
$518
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/193:55 pm -
2 stops21h 10m
Mon 10/266:45 am -
2 stops20h 18m
Deal found 9/6![United Airlines logo]()
$519
This United Airlines deal was found by Cheapflights users on 9/6. 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 2/1711:00 am -
2 stops21h 10m
Wed 2/241:55 pm -
2 stops19h 38m
Deal found 9/6![United Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 9/3. 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 1/1010:45 pm -
2 stops33h 25m
Sat 1/166:15 am -
2 stops20h 54m
Deal found 9/3![United Airlines logo]()
$527
This United Airlines deal was found by Cheapflights users on 9/5. 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 9/282:10 pm -
1 stop13h 10m
Tue 10/66:55 am -
1 stop14h 25m
Deal found 9/5![United Airlines logo]()
$542
This United Airlines deal was found by Cheapflights users on 9/5. 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 9/232:10 pm -
1 stop19h 15m
Wed 10/76:35 am -
1 stop14h 45m
Deal found 9/5![United Airlines logo]()
$542
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/410:50 am -
2 stops37h 15m
Sun 10/119:55 am -
2 stops41h 37m
Deal found 9/3![United Airlines logo]()
$640
This United Airlines deal was found by Cheapflights users on 9/4. 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 12/243:24 pm -
2 stops23h 16m
Tue 1/126:15 am -
3 stops26h 16m
Deal found 9/4![United Airlines logo]()
$655
Last-minute flights from Seattle to Oslo GardermoenDiscover last-minute flight deals from Seattle to Oslo Gardermoen. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Oslo Gardermoen. Data last updated September 7, 2026 and is based on user searches.
This Scandinavian Airlines deal was found by Cheapflights users on 9/5. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:55 pm -
1 stop31h 15m
Mon 10/51:35 pm -
1 stop33h 10m
Deal found 9/5![Scandinavian Airlines logo]()
$434
This oojo deal was found by Cheapflights users on 9/2. 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.
Sun 10/43:55 pm -
1 stop14h 00m
Fri 10/94:00 pm -
1 stop30h 45m
Deal found 9/2![Scandinavian Airlines logo]()
$451
This oojo deal was found by Cheapflights users on 9/3. 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.
Sun 10/43:55 pm -
1 stop12h 00m
Sun 10/116:00 am -
1 stop16h 45m
Deal found 9/3![Scandinavian Airlines logo]()
$477
This oojo deal was found by Cheapflights users on 9/3. 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.
Mon 10/193:40 pm -
1 stop11h 55m
Wed 10/281:10 pm -
1 stop12h 50m
Deal found 9/3![Icelandair logo]()
$399
This FlightHub deal was found by Cheapflights users on 9/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:40 pm -
1 stop11h 55m
Fri 10/301:10 pm -
1 stop12h 50m
Deal found 9/5![Icelandair logo]()
$405
This FlightHub deal was found by Cheapflights users on 9/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:40 pm -
1 stop11h 55m
Thu 10/299:30 pm -
1 stop28h 30m
Deal found 9/5![Icelandair logo]()
$407
This oojo deal was found by Cheapflights users on 9/5. 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.
Tue 10/207:00 pm -
1 stop11h 25m
Fri 10/301:10 pm -
1 stop12h 50m
Deal found 9/5![Icelandair logo]()
$449
This FlightHub deal was found by Cheapflights users on 9/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 pm -
1 stop11h 25m
Sat 10/311:10 pm -
1 stop12h 50m
Deal found 9/5![Icelandair logo]()
$455
This FlightHub deal was found by Cheapflights users on 9/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 pm -
1 stop11h 25m
Thu 10/299:30 pm -
1 stop28h 30m
Deal found 9/5![Icelandair logo]()
$457
This oojo deal was found by Cheapflights users on 9/5. 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 10/213:40 pm -
1 stop11h 35m
Sun 10/253:30 pm -
1 stop34h 30m
Deal found 9/5![Icelandair logo]()
$401
This Mytrip deal was found by Cheapflights users on 9/4. 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.
Sat 10/243:40 pm -
1 stop11h 55m
Sat 10/311:10 pm -
1 stop12h 50m
Deal found 9/4![Icelandair logo]()
$398
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 September 7, 2026.
Search for one-way flight options from Seattle to Oslo Gardermoen. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
This SmartFares deal was found by Cheapflights users on 9/3. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/43:55 pm -
1 stop13h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Scandinavian Airlines logo]()
$198
This Justfly.com deal was found by Cheapflights users on 9/4. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:55 pm -
1 stop32h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Scandinavian Airlines logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 10/43:55 pm -
3 stops39h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 9/5. 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.
Fri 10/93:55 pm -
3 stops54h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$261
This Mytrip deal was found by Cheapflights users on 9/2. 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.
Wed 12/22:35 pm -
1 stop12h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Icelandair logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 9/4. 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.
Sat 10/103:55 pm -
3 stops42h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 10/183:40 pm -
3 stops30h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$278
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 September 7, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $370 (Sembo) |
One-way from | $198 (SmartFares) |
Popular in | December |
Cheapest in | January |
Average price | $594 |
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 September 7, 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
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Sat 10/3
3:55 pm-8:45 am
2 stops31h 50m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$291
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Sun 10/4
3:55 pm-7:00 pm
3 stops18h 05m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$316
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Wed 10/21
7:15 am-8:40 pm
2 stops28h 25m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$321
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Sat 10/10
8:20 pm-10:40 am
1 stop29h 20m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$323
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Thu 10/8
8:20 pm-11:50 pm
1 stop18h 30m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$323
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Fri 11/27
2:50 pm-5:40 pm
1 stop17h 50m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$324
Quickest round-trip
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Sun 10/18
7:00 pm-8:20 pm
2 stops16h 20m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$325
SeattleOslo
SEA Seattle/Tacoma Intl - OSL Oslo Gardermoen
SEAOSL
Seattle/Tacoma Intl
Mon 10/12
5:30 am-11:00 pm
2 stops32h 30m
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
Wed 10/14
11:10 pm-8:40 pm
2 stops36h 30m
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
Fri 11/27
6:00 am-1:50 pm
2 stops22h 50m
Oslo Gardermoen
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$326
Showing 1-10 of 22 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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | 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 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 $420). 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 $495 and $670 in October.The cheapest round-trip price found within the last 5 days was $370 on Icelandair (Oct 22-Oct 29).
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 September 7, 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.
Comfort
7.7
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Overall
7.8
Food
7.3
Crew
8.4
Boarding
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Related info for your journey
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Top 7 airlines flying from Seattle to Oslo Gardermoen
Discover the top 7 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 September 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$351 | Average$537 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$393 | Average$577 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$426 | Average$643 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$468 | Average$686 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$491 | Average$545 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$493 | Average$640 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$522 | Average$648 | FlexibilityNo cancel fee | On-time75% |