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Cheap flights from Seattle to Oslo from $343

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Oslo departing on 3/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Oslo

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
2:35 pm - 11:35 amSEA-OSL
12h 00m1 stop
Icelandair Logo
1:10 pm - 5:00 pmOSL-SEA
12h 50m1 stop
$386Icelandair
Find Deal
Sun, Jan 11 - Sat, Jan 24
Icelandair Logo
2:35 pm - 11:35 amSEA-OSL
12h 00m1 stop
Icelandair Logo
1:10 pm - 5:00 pmOSL-SEA
12h 50m1 stop
$389Icelandair
Find Deal
Mon, Jan 26 - Wed, Feb 4
Icelandair Logo
2:35 pm - 11:35 amSEA-OSL
12h 00m1 stop
Icelandair Logo
1:10 pm - 5:00 pmOSL-SEA
12h 50m1 stop
$391Icelandair
Find Deal
Mon, Jan 12 - Mon, Jan 19
Icelandair Logo
3:45 pm - 12:35 pmSEA-OSL
11h 50m1 stop
Icelandair Logo
4:30 pm - 5:50 pmOSL-SEA
34h 20m1 stop
$397Icelandair
Find Deal
Sun, Apr 12 - Sun, Apr 19
Icelandair Logo
7:00 pm - 12:35 pmSEA-OSL
32h 35m1 stop
Icelandair Logo
1:50 pm - 5:50 pmOSL-SEA
13h 00m1 stop
$400Icelandair
Find Deal
Wed, Apr 22 - Wed, May 13
Scandinavian Airlines Logo
7:20 am - 9:15 amSEA-OSL
16h 55m2 stops
Scandinavian Airlines Logo
6:00 am - 1:45 pmOSL-SEA
16h 45m1 stop
$403Scandinavian Airlines
Find Deal
Sun, May 10 - Fri, May 29
Icelandair Logo
7:00 pm - 12:35 pmSEA-OSL
32h 35m1 stop
Icelandair Logo
4:30 pm - 6:00 pmOSL-SEA
34h 30m1 stop
$405Icelandair
Find Deal
Tue, May 5 - Tue, May 19
Scandinavian Airlines Logo
7:20 am - 9:15 amSEA-OSL
16h 55m2 stops
Scandinavian Airlines Logo
6:00 am - 1:45 pmOSL-SEA
16h 45m1 stop
$419Scandinavian Airlines
Find Deal
Sun, May 10 - Fri, May 29
Scandinavian Airlines Logo
11:10 am - 12:55 pmSEA-OSL
16h 45m2 stops
Scandinavian Airlines Logo
9:00 pm - 1:45 pmOSL-SEA
25h 45m1 stop
$420Scandinavian Airlines
Find Deal
Wed, May 13 - Mon, May 25
Scandinavian Airlines Logo
7:20 am - 12:55 pmSEA-OSL
20h 35m2 stops
Scandinavian Airlines Logo
1:35 pm - 1:45 pmOSL-SEA
33h 10m1 stop
$431Scandinavian Airlines
Find Deal
Sun, May 10 - Thu, May 28

Icelandair flights from Seattle to Oslo Gardermoen Airport

Our best Icelandair deals on Seattle to Oslo Gardermoen Airport flight tickets
Icelandair
Jan 11
SEA2:35 pmSeattle/Tacoma Intl
12h 00m
1 stop
OSL11:35 amOslo Gardermoen
Jan 24
OSL1:10 pmOslo Gardermoen
12h 50m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$386
Find similar
Icelandair
Jan 26
SEA2:35 pmSeattle/Tacoma Intl
12h 00m
1 stop
OSL11:35 amOslo Gardermoen
Feb 4
OSL1:10 pmOslo Gardermoen
12h 50m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$389
Find similar
Icelandair
Jan 12
SEA2:35 pmSeattle/Tacoma Intl
12h 00m
1 stop
OSL11:35 amOslo Gardermoen
Jan 19
OSL1:10 pmOslo Gardermoen
12h 50m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$391
Find similar

Scandinavian Airlines flights from Seattle to Oslo Gardermoen Airport

Our best Scandinavian Airlines deals on Seattle to Oslo Gardermoen Airport flight tickets
Scandinavian Airlines
May 10
SEA7:20 amSeattle/Tacoma Intl
16h 55m
2 stops
OSL9:15 amOslo Gardermoen
May 29
OSL6:00 amOslo Gardermoen
16h 45m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$403
Find similar
Scandinavian Airlines
May 10
SEA7:20 amSeattle/Tacoma Intl
16h 55m
2 stops
OSL9:15 amOslo Gardermoen
May 29
OSL6:00 amOslo Gardermoen
16h 45m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$419
Find similar
Scandinavian Airlines
May 13
SEA11:10 amSeattle/Tacoma Intl
16h 45m
2 stops
OSL12:55 pmOslo Gardermoen
May 25
OSL9:00 pmOslo Gardermoen
25h 45m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$420
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Oslo Gardermoen Airport 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, momondo users made 832,500 searches. Data last updated November 29, 2025.
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

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/11

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sat 1/24

1:10 pm-5:00 pm

1 stop12h 50m

$386

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 1/26

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Wed 2/4

1:10 pm-5:00 pm

1 stop12h 50m

$389

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 1/12

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Mon 1/19

1:10 pm-5:00 pm

1 stop12h 50m

$391

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 4/12

3:45 pm-12:35 pm

1 stop11h 50m

Oslo Gardermoen

Sun 4/19

4:30 pm-5:50 pm

1 stop34h 20m

$397

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 4/22

7:00 pm-12:35 pm

1 stop32h 35m

Oslo Gardermoen

Wed 5/13

1:50 pm-5:50 pm

1 stop13h 00m

$400

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 5/10

7:20 am-9:15 am

2 stops16h 55m

Oslo Gardermoen

Fri 5/29

6:00 am-1:45 pm

1 stop16h 45m

$403

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 5/5

7:00 pm-12:35 pm

1 stop32h 35m

Oslo Gardermoen

Tue 5/19

4:30 pm-6:00 pm

1 stop34h 30m

$405

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 5/10

7:20 am-9:15 am

2 stops16h 55m

Oslo Gardermoen

Fri 5/29

6:00 am-1:45 pm

1 stop16h 45m

$419

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 5/13

11:10 am-12:55 pm

2 stops16h 45m

Oslo Gardermoen

Mon 5/25

9:00 pm-1:45 pm

1 stop25h 45m

$420

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 5/10

7:20 am-12:55 pm

2 stops20h 35m

Oslo Gardermoen

Thu 5/28

1:35 pm-1:45 pm

1 stop33h 10m

$431

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Oslo from

How to get the cheapest flight ticket from Seattle to Oslo Gardermoen Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Oslo Gardermoen Airport?

The cheapest month to fly to Oslo Gardermoen Airport from Seattle is in January. Flight prices, which tend to average around $434, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Oslo Gardermoen Airport from Seattle during November instead. Flights to Oslo Gardermoen Airport in November, while not as cheap as those in January, still average around $483.

What is the cheapest day to depart on your flight to Oslo Gardermoen Airport?

According to our data, Tuesday is the cheapest day to fly to Oslo Gardermoen Airport from Seattle. The lowest ticket price found for a Tuesday departure recently was $772. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Oslo Gardermoen Airport for around $896.

What is the cheapest time of day to depart on your flight to Oslo Gardermoen Airport?

Our most recent data shows that the best time of day to fly to Oslo Gardermoen Airport is in the evening. Flights from Seattle to Oslo Gardermoen Airport during this time can be as low as $696. In contrast, the most expensive time of day to depart to Oslo Gardermoen Airport is in the afternoon when prices are around $959.

How far in advance should I book a flight to Oslo Gardermoen Airport?

You are more likely to see cheaper flights to Oslo Gardermoen Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Oslo Gardermoen Airport for around $592 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oslo Gardermoen Airport from Seattle for as low as $531 on momondo.

How have Seattle to Oslo Gardermoen Airport flight prices changed over time?

As of November 2025, prices for Seattle to Oslo Gardermoen Airport flights are approximately 5% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Oslo Gardermoen Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Oslo Gardermoen Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Oslo Gardermoen Airport (SEA to OSL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Oslo Gardermoen Airport

Fastest flight time

11h 25m

Direct flights

None
The fastest flight from Seattle to Oslo Gardermoen Airport takes 11h 25m
There are no direct flights from Seattle to Oslo Gardermoen Airport. There are no popular flight routes from Seattle to Oslo Gardermoen Airport.
Search flight deals

  • How far is Seattle/Tacoma Intl to Oslo Gardermoen by plane?

    Seattle/Tacoma Intl and Oslo Gardermoen are 4540.7 mi apart from one another. 11h 25m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Oslo Gardermoen Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Oslo Gardermoen Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Oslo Gardermoen Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Oslo Gardermoen Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Oslo Gardermoen Airport.

  • What documentation or ID do you need to fly to Oslo Gardermoen Airport?

    The travel and health documents you'll need for your trip to Oslo Gardermoen Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Oslo Gardermoen Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Oslo Gardermoen Airport?

Best airlines flying from Seattle to Oslo Gardermoen Airport

Compare and see reviews for airlines that fly from Seattle to Oslo Gardermoen Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $354Free CancellationRating
6.7
7,544 reviews
Search British Airways flights
IcelandairPriceFrom $403Free CancellationRating
7.0
582 reviews
Search Icelandair flights
DeltaPriceFrom $478Free CancellationRating
7.9
8,011 reviews
Search Delta flights
FinnairPriceFrom $484Free CancellationRating
7.6
1,334 reviews
Search Finnair flights
Scandinavian AirlinesPriceFrom $492Free CancellationRating
7.4
1,590 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $517Free CancellationRating
7.4
9,059 reviews
Search United Airlines flights
KLMPriceFrom $524Free CancellationRating
7.7
1,423 reviews
Search KLM flights
LufthansaPriceFrom $551Free CancellationRating
6.8
7,597 reviews
Search Lufthansa flights
Air FrancePriceFrom $552Free CancellationRating
7.4
1,500 reviews
Search Air France flights
American AirlinesPriceFrom $564Free CancellationRating
7.2
11,044 reviews
Search American Airlines flights

Traveling to a place near Oslo?

Book flights to Oslo if you plan to visit one of these locations
Gardermoen
Fredrikstad
Drammen
Lillehammer

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Oslo?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Oslo from Seattle.

Can I find flights from Seattle to Oslo with flexible booking policies on momondo?

Flights from Seattle to Oslo with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Oslo?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Oslo from Seattle.

I’m not ready to book a flight from Seattle to Oslo right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Seattle to Oslo flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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