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Cheap flights from Seattle to Oslo Gardermoen Airport from C$ 270

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 18/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
4 May — 11 May1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo Gardermoen are usually found in November or January, booked 43 days in advance, depart on a Monday or Wednesday and return on a Monday

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 29 April 2025.

Round-trip from

C$ 722

One-way from

C$ 270

Popular in

June

Cheapest in

November

Average price

C$ 808
SWISS
  • SWISS
  • 12/8-20/8
  • 4 total stops
  • 51h 55m total
  • Seattle to Oslo
Search Deals
Icelandair
  • Icelandair
  • 18/10
  • 1 total stop
  • 32h 35m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (C$ 362 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 66 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 29 April 2025.

Tue 12/812:40 p.m.SEA - OSL
2 stops26h 15mSWISS
Wed 20/85:40 a.m.OSL - SEA
2 stops25h 40mSWISS
Deal found 28/4C$ 722
Tue 12/82:24 p.m.SEA - OSL
2 stops22h 46mUnited Airlines
Wed 20/87:15 a.m.OSL - SEA
1 stop18h 44mUnited Airlines
Deal found 28/4C$ 762
Wed 27/84:00 p.m.SEA - OSL
1 stop13h 10mScandinavian Airlines
Thu 11/97:05 p.m.OSL - SEA
1 stop27h 55mScandinavian Airlines
Deal found 28/4C$ 780
Tue 12/810:40 a.m.SEA - OSL
2 stops20h 35mBritish Airways
Wed 20/85:05 p.m.OSL - SEA
1 stop27h 30mBritish Airways
Deal found 28/4C$ 789
Wed 1/108:25 p.m.SEA - OSL
1 stop15h 15mDelta
Wed 15/106:30 a.m.OSL - SEA
2 stops19h 29mDelta
Deal found 28/4C$ 812
Thu 23/102:20 p.m.SEA - OSL
1 stop12h 55mLufthansa
Sat 8/116:20 a.m.OSL - SEA
1 stop14h 50mLufthansa
Deal found 28/4C$ 815
Mon 30/67:00 p.m.SEA - OSL
1 stop11h 25mIcelandair
Wed 16/74:30 p.m.OSL - SEA
1 stop13h 10mIcelandair
Deal found 28/4C$ 995
Thu 9/108:45 a.m.SEA - OSL
3 stops30h 05mMultiple Airlines
Sat 18/106:35 a.m.OSL - SEA
2 stops24h 41mMultiple Airlines
Deal found 28/4C$ 999
Thu 12/65:35 p.m.SEA - OSL
1 stop18h 20mKLM
Thu 19/611:50 a.m.OSL - SEA
1 stop13h 05mKLM
Deal found 28/4C$ 1,135
Mon 30/67:00 a.m.SEA - OSL
2 stops22h 10mAustrian Airlines
Sun 13/72:55 p.m.OSL - SEA
2 stops37h 03mAustrian Airlines
Deal found 28/4C$ 1,616
Wed 15/1011:30 a.m.SEA - OSL
3 stops22h 45mTAP AIR PORTUGAL
Mon 20/1012:50 p.m.OSL - SEA
2 stops30h 29mTAP AIR PORTUGAL
Deal found 28/4C$ 1,968

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 629,999 searches. Data last updated 29 April 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

Tue 12/8

12:40 p.m.-11:55 p.m.

2 stops26h 15m

Oslo Gardermoen

Wed 20/8

5:40 a.m.-10:20 p.m.

2 stops25h 40m

C$ 722

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 12/8

2:24 p.m.-10:10 p.m.

2 stops22h 46m

Oslo Gardermoen

Wed 20/8

7:15 a.m.-4:59 p.m.

1 stop18h 44m

C$ 762

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 27/8

4:00 p.m.-2:10 p.m.

1 stop13h 10m

Oslo Gardermoen

Thu 11/9

7:05 p.m.-2:00 p.m.

1 stop27h 55m

C$ 780

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 12/8

10:40 a.m.-4:15 p.m.

2 stops20h 35m

Oslo Gardermoen

Wed 20/8

5:05 p.m.-11:35 a.m.

1 stop27h 30m

C$ 789

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 1/10

8:25 p.m.-8:40 p.m.

1 stop15h 15m

Oslo Gardermoen

Wed 15/10

6:30 a.m.-4:59 p.m.

2 stops19h 29m

C$ 812

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 23/10

2:20 p.m.-12:15 p.m.

1 stop12h 55m

Oslo Gardermoen

Sat 8/11

6:20 a.m.-12:10 p.m.

1 stop14h 50m

C$ 815

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 30/6

7:00 p.m.-3:25 p.m.

1 stop11h 25m

Oslo Gardermoen

Wed 16/7

4:30 p.m.-8:40 p.m.

1 stop13h 10m

C$ 995

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 9/10

8:45 a.m.-11:50 p.m.

3 stops30h 05m

Oslo Gardermoen

Sat 18/10

6:35 a.m.-10:16 p.m.

2 stops24h 41m

C$ 999

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 12/6

5:35 p.m.-8:55 p.m.

1 stop18h 20m

Oslo Gardermoen

Thu 19/6

11:50 a.m.-3:55 p.m.

1 stop13h 05m

C$ 1,135

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 30/6

7:00 a.m.-2:10 p.m.

2 stops22h 10m

Oslo Gardermoen

Sun 13/7

2:55 p.m.-6:58 p.m.

2 stops37h 03m

C$ 1,616

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/4

Showing 1-10 of 19 results
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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 25 April 2025.

The price you pay for your flight from Seattle to Oslo Gardermoen Airport may vary depending on when you book. For the best chance of a lower fare, look to book 43 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Oslo Gardermoen Airport?

Currently, April is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of C$ 666). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of C$ 949). 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 29 April 2025.

It’s typically best to fly out from Seattle to Oslo Gardermoen Airport in the afternoon. Doing so could potentially save you 32% on the flight price compared to flying in the morning, which is usually more expensive.

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 40.0 - 90.0 mm per month. August is typically the wettest month, when rainfall can reach 90.0 mm. February is typically the driest time to visit Oslo Gardermoen Airport when rainfall is around 40.0 mm.

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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -3.0 C).

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 29 April 2025.
Delta
8.0
Very good
7,929 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,587 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Oslo Gardermoen. You should not have trouble finding flights to Oslo Gardermoen from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to Oslo Gardermoen per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Seattle airport to Oslo Gardermoen. It is only a 18.4 km journey to Seattle/Tacoma Intl (SEA) from Seattle’s city centre.

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

    Cheapflights users have booked flights from Seattle to Oslo Gardermoen Airport round-trip from C$ 722. Other airlines that can offer you cheap pricing are United Airlines, from C$ 762, and Scandinavian Airlines, from C$ 780. SWISS is 26% 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?

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as C$ 270. However, be on the lookout for offers from SWISS and United Airlines, as they are both options that can get you from Seattle to Oslo Gardermoen Airport for a low price.

  • 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, April is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of C$ 666). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of C$ 949). 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

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Top 3 airlines flying from Seattle to Oslo Gardermoen

Discover the top 3 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 629,999 searches. Data last updated 29 April 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 647AverageC$ 941FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 839AverageC$ 889FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapestC$ 888AverageC$ 910FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Seattle to Oslo Gardermoen?

When you search for this flight from Seattle to Oslo Gardermoen, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Oslo Gardermoen?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Oslo Gardermoen from Seattle.

Can Cheapflights find flights from Seattle to Oslo Gardermoen with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Seattle to Oslo Gardermoen, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Seattle to Oslo Gardermoen become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Oslo Gardermoen flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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