HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oslo Gardermoen

$208+ Cheap flights from Seattle (SEA) to Oslo Gardermoen (OSL)

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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo Gardermoen are usually found in November or January, booked 79 days in advance, depart on a Tuesday or Monday and return on a Saturday

Cheap 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 junio 12, 2025.

Round-trip from

$531
(Mytrip)

One-way from

$208
(FlightHub)

Popular in

June

Cheapest in

November

Average price

$862
From Seattle/Tacoma Intl to Oslo Gardermoen
Search Deals
One-way flight from Seattle/Tacoma Intl to Oslo Gardermoen
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($120 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Seattle to Oslo Gardermoen

Cheapest flights from Seattle to Oslo Gardermoen
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 junio 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/9. 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.
dom. 7/64:00 pmSEA - OSL
1 stop21h 05mScandinavian Airlines
dom. 7/138:55 pmOSL - SEA
1 stop25h 55mScandinavian Airlines
Deal found 6/9$531
This oojo deal was found by Cheapflights users on 6/10. 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.
mar. 7/153:45 pmSEA - OSL
1 stop14h 40mIcelandair
mié. 7/304:30 pmOSL - SEA
1 stop13h 10mIcelandair
Deal found 6/10$535
This United Airlines deal was found by Cheapflights users on 6/12. 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.
lun. 8/1112:20 amSEA - OSL
2 stops26h 55mUnited Airlines
jue. 8/216:35 amOSL - SEA
1 stop14h 20mUnited Airlines
Deal found 6/12$537
This British Airways deal was found by Cheapflights users on 6/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/91:30 pmSEA - OSL
1 stop24h 55mBritish Airways
mié. 10/17:40 amOSL - SEA
2 stops21h 29mBritish Airways
Deal found 6/10$541
This Delta deal was found by Cheapflights users on 6/11. 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.
lun. 7/215:35 pmSEA - OSL
1 stop30h 10mDelta
mar. 8/266:30 amOSL - SEA
2 stops18h 30mDelta
Deal found 6/11$542
This Lufthansa deal was found by Cheapflights users on 6/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/411:05 amSEA - OSL
2 stops21h 45mLufthansa
lun. 12/156:15 amOSL - SEA
1 stop14h 55mLufthansa
Deal found 6/10$543
This Finnair deal was found by Cheapflights users on 6/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/105:40 pmSEA - OSL
1 stop17h 05mFinnair
sáb. 8/238:35 amOSL - SEA
2 stops24h 05mFinnair
Deal found 6/10$548
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/157:55 amSEA - OSL
2 stops17h 45mMultiple Airlines
lun. 10/208:00 amOSL - SEA
2 stops21h 04mMultiple Airlines
Deal found 6/12$555
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
lun. 8/111:45 pmSEA - OSL
2 stops25h 10mSWISS
lun. 8/255:40 amOSL - SEA
2 stops22h 09mSWISS
Deal found 6/11$556
This Air Canada deal was found by Cheapflights users on 6/12. 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.
mar. 9/97:15 amSEA - OSL
2 stops23h 25mAir Canada
mié. 10/19:45 amOSL - SEA
2 stops17h 51mAir Canada
Deal found 6/12$562
This KLM deal was found by Cheapflights users on 6/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/85:35 pmSEA - OSL
1 stop18h 20mKLM
dom. 7/205:20 pmOSL - SEA
1 stop27h 15mKLM
Deal found 6/10$680
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/121:32 pmSEA - OSL
2 stops18h 03mAmerican Airlines
mié. 8/201:20 pmOSL - SEA
2 stops19h 20mAmerican Airlines
Deal found 6/10$681

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 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Seattle to Oslo Gardermoen Airport that are best for you.

Fly from

Seattle

Fly to

Oslo Gardermoen

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

dom. 7/6

4:00 pm-10:05 pm

1 stop21h 05m

Oslo Gardermoen

dom. 7/13

8:55 pm-1:50 pm

1 stop25h 55m

$531

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

mar. 7/15

3:45 pm-3:25 pm

1 stop14h 40m

Oslo Gardermoen

mié. 7/30

4:30 pm-8:40 pm

1 stop13h 10m

$535

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

mar. 9/9

1:30 pm-11:25 pm

1 stop24h 55m

Oslo Gardermoen

mié. 10/1

7:40 am-8:09 pm

2 stops21h 29m

$541

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

lun. 7/21

5:35 pm-8:45 am

1 stop30h 10m

Oslo Gardermoen

mar. 8/26

6:30 am-4:00 pm

2 stops18h 30m

$542

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

jue. 12/4

11:05 am-5:50 pm

2 stops21h 45m

Oslo Gardermoen

lun. 12/15

6:15 am-12:10 pm

1 stop14h 55m

$543

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

lun. 9/1

4:25 pm-11:55 pm

1 stop22h 30m

Oslo Gardermoen

lun. 9/15

6:35 am-11:55 am

1 stop14h 20m

$544

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

lun. 8/18

7:20 am-6:05 pm

2 stops25h 45m

Oslo Gardermoen

mié. 8/27

9:45 am-8:41 pm

2 stops19h 56m

$546

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

sáb. 8/9

11:58 pm-12:15 pm

2 stops27h 17m

Oslo Gardermoen

mar. 8/19

6:35 am-10:59 pm

2 stops25h 24m

$547

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

dom. 8/10

5:40 pm-7:45 pm

1 stop17h 05m

Oslo Gardermoen

sáb. 8/23

8:35 am-11:40 pm

2 stops24h 05m

$548

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

lun. 8/11

1:45 pm-11:55 pm

2 stops25h 10m

Oslo Gardermoen

lun. 8/25

5:40 am-6:49 pm

2 stops22h 09m

$556

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 23 results
1
2
3

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.
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

How far ahead should I book a flight from Seattle to Oslo Gardermoen Airport?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Oslo Gardermoen. Price data was last updated on June 9, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Oslo Gardermoen Airport, you should look to book at least 79 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, November is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $567). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,004). 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 Gardermoen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

It’s optimal to fly from Seattle to Oslo Gardermoen Airport in the evening. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Seattle to Oslo Gardermoen Airport?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Oslo Gardermoen. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Oslo Gardermoen Airport flight should consider departing on Sunday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Oslo Gardermoen by month

Plan your trip to Oslo Gardermoen by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Oslo Gardermoen Airport ranges from 1.6 - 3.5 inches per month. August is typically the wettest month, when rainfall can reach 3.5 in. February is typically the driest time to visit Oslo Gardermoen Airport when rainfall is around 1.6 in.

Temperature in Oslo Gardermoen by month

Plan your trip to Oslo Gardermoen by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Oslo Gardermoen Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

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 junio 12, 2025.
See what other customers who have flown with Delta, KLM and Finnair from Seattle to Oslo have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Oslo Gardermoen. 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 Gardermoen?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Oslo Gardermoen from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Oslo Gardermoen should be relatively easy as there are 0 daily outbound flights to Oslo Gardermoen from 10 different airlines.

  • What are the cheapest airlines flying from Seattle to Oslo Gardermoen Airport round-trip?

    Currently priced at $531, Scandinavian Airlines will fly you from Seattle to Oslo Gardermoen Airport and back. In addition to Scandinavian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and United Airlines - these airlines can fly you to your destination from $535 and $537, respectively. Scandinavian Airlines is 20% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Oslo Gardermoen Airport one-way?

    One-way options have recently been found by users for as low as $208 on Icelandair. Other airlines that offer cheap prices include Delta from $388 and SWISS from $404 one-way.

  • Can I find deals for flights from Seattle to Oslo Gardermoen that include hotel bookings?

    Yes. In addition to deals on Seattle to Oslo Gardermoen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Oslo Gardermoen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Oslo Gardermoen.

  • Can I find deals for business class flights from Seattle to Oslo Gardermoen?

    Yes. Cheapflights offers flight deals from Seattle to Oslo Gardermoen 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 Gardermoen Airport?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $567). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,004). 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.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Gardermoen

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Oslo Gardermoen

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Sandefjord flights
Portland to Oslo Gardermoen flights
Portland to Sandefjord flights
Spokane to Oslo Gardermoen flights
Spokane to Sandefjord flights

Top 10 airlines flying from Seattle to Oslo Gardermoen

Discover the top 10 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 2,558,603 searches. Data last updated junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$424Average$632FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$475Average$677FlexibilityNo cancel feeOn-time70%
FinnairCheapest$484Average$716FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$527Average$844FlexibilityNo cancel feeOn-time77%
KLMCheapest$564Average$800FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$569Average$670FlexibilityNo cancel feeOn-time77%
DeltaCheapest$569Average$815FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$570Average$836FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$578Average$694FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$593Average$878FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.