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Cheap flights from Seattle to Oslo from $330

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 1/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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 am
SEA
-
OSL
12h 00m1 stop
Icelandair Logo
1:10 pm - 5:00 pm
OSL
-
SEA
12h 50m1 stop
$360Icelandair
Sat, Jan 31 - Sat, Feb 7
Icelandair Logo
2:35 pm - 11:35 am
SEA
-
OSL
12h 00m1 stop
Icelandair Logo
1:10 pm - 5:00 pm
OSL
-
SEA
12h 50m1 stop
$392Icelandair
Sun, Jan 11 - Mon, Jan 26
Icelandair Logo
2:35 pm - 11:35 am
SEA
-
OSL
12h 00m1 stop
Icelandair Logo
9:30 pm - 5:00 pm
OSL
-
SEA
28h 30m1 stop
$393Icelandair
Thu, Jan 22 - Sun, Feb 8
Icelandair Logo
2:35 pm - 11:35 am
SEA
-
OSL
12h 00m1 stop
Icelandair Logo
1:10 pm - 6:25 pm
OSL
-
SEA
13h 15m1 stop
$429Icelandair
Sun, Mar 1 - Sat, Mar 14
Icelandair Logo
2:35 pm - 11:35 am
SEA
-
OSL
12h 00m1 stop
Icelandair Logo
1:10 pm - 5:00 pm
OSL
-
SEA
12h 50m1 stop
$456Icelandair
Wed, Feb 18 - Mon, Mar 2
Icelandair Logo
2:35 pm - 11:35 am
SEA
-
OSL
12h 00m1 stop
Icelandair Logo
9:30 pm - 5:00 pm
OSL
-
SEA
28h 30m1 stop
$457Icelandair
Wed, Feb 18 - Sun, Mar 1
Icelandair Logo
3:40 pm - 12:35 pm
SEA
-
OSL
11h 55m1 stop
Icelandair Logo
1:50 pm - 5:55 pm
OSL
-
SEA
13h 05m1 stop
$458Icelandair
Mon, Apr 6 - Mon, Apr 20
Icelandair Logo
3:35 pm - 11:35 am
SEA
-
OSL
12h 00m1 stop
Icelandair Logo
1:10 pm - 6:00 pm
OSL
-
SEA
12h 50m1 stop
$465Icelandair
Mon, Mar 16 - Thu, Mar 26
British Airways Logo
8:20 pm - 10:35 am
SEA
-
OSL
29h 15m1 stop
British Airways Logo
5:05 pm - 11:35 am
OSL
-
SEA
27h 30m1 stop
$468British Airways
Mon, Apr 6 - Mon, Apr 13
Multiple Airlines Logo
8:10 am - 5:10 pm
SEA
-
OSL
24h 00m2 stops
Multiple Airlines Logo
6:15 am - 7:16 pm
OSL
-
SEA
22h 01m2 stops
$470Multiple Airlines
Sat, Jan 31 - Sat, Feb 7

British Airways flights from Seattle to Oslo Gardermoen Airport

Our best British Airways deals on Seattle to Oslo Gardermoen Airport flight tickets
British Airways
Apr 6
SEA8:20 pmSeattle/Tacoma Intl
29h 15m
1 stop
OSL10:35 amOslo Gardermoen
Apr 13
OSL5:05 pmOslo Gardermoen
27h 30m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$468
Find similar
British Airways
Mar 17
SEA7:50 pmSeattle/Tacoma Intl
34h 20m
1 stop
OSL2:10 pmOslo Gardermoen
Apr 8
OSL11:35 amOslo Gardermoen
15h 50m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
$477
Find similar
British Airways
Mar 17
SEA7:50 pmSeattle/Tacoma Intl
31h 05m
1 stop
OSL10:55 amOslo Gardermoen
Apr 8
OSL5:05 pmOslo Gardermoen
34h 20m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
$478
Find similar

Lufthansa flights from Seattle to Oslo Gardermoen Airport

Our best Lufthansa deals on Seattle to Oslo Gardermoen Airport flight tickets
Lufthansa
Jan 22
SEA7:00 amSeattle/Tacoma Intl
23h 40m
2 stops
OSL3:40 pmOslo Gardermoen
Jan 27
OSL6:25 pmOslo Gardermoen
27h 55m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$473
Find similar
Lufthansa
Jan 15
SEA2:10 pmSeattle/Tacoma Intl
18h 30m
2 stops
OSL5:40 pmOslo Gardermoen
Jan 22
OSL6:15 amOslo Gardermoen
22h 01m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$493
Find similar
Lufthansa
May 8
SEA6:50 pmSeattle/Tacoma Intl
14h 05m
1 stop
OSL5:55 pmOslo Gardermoen
May 22
OSL11:45 amOslo Gardermoen
14h 14m
1 stop
SEA4:59 pmSeattle/Tacoma Intl
$494
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 December 18, 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

Sat 1/31

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sat 2/7

1:10 pm-5:00 pm

1 stop12h 50m

$360

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/11

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Mon 1/26

1:10 pm-5:00 pm

1 stop12h 50m

$392

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 1/22

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 2/8

9:30 pm-5:00 pm

1 stop28h 30m

$393

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 3/1

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sat 3/14

1:10 pm-6:25 pm

1 stop13h 15m

$429

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 2/18

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Mon 3/2

1:10 pm-5:00 pm

1 stop12h 50m

$456

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 2/18

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 3/1

9:30 pm-5:00 pm

1 stop28h 30m

$457

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 4/6

3:40 pm-12:35 pm

1 stop11h 55m

Oslo Gardermoen

Mon 4/20

1:50 pm-5:55 pm

1 stop13h 05m

$458

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/16

3:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Thu 3/26

1:10 pm-6:00 pm

1 stop12h 50m

$465

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 4/6

8:20 pm-10:35 am

1 stop29h 15m

Oslo Gardermoen

Mon 4/13

5:05 pm-11:35 am

1 stop27h 30m

$468

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 1/31

8:10 am-5:10 pm

2 stops24h 00m

Oslo Gardermoen

Sat 2/7

6:15 am-7:16 pm

2 stops22h 01m

$470

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 $457, 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 $599 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 December 2025, prices for Seattle to Oslo Gardermoen Airport flights are approximately 16% 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
7,585 reviews
Search British Airways flights
IcelandairPriceFrom $403Free CancellationRating
7.0
591 reviews
Search Icelandair flights
DeltaPriceFrom $478Free CancellationRating
7.9
8,005 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $492Free CancellationRating
7.4
1,607 reviews
Search Scandinavian Airlines flights
American AirlinesPriceFrom $510Free CancellationRating
7.2
11,055 reviews
Search American Airlines flights
United AirlinesPriceFrom $517Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
KLMPriceFrom $524Free CancellationRating
7.7
1,428 reviews
Search KLM flights
LufthansaPriceFrom $551Free CancellationRating
6.8
7,635 reviews
Search Lufthansa flights
Air FrancePriceFrom $552Free CancellationRating
7.4
1,507 reviews
Search Air France flights
FinnairPriceFrom $569Free CancellationRating
7.6
1,338 reviews
Search Finnair flights

Traveling to a place near Oslo?

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

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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