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Cheap flights from Seattle to Oslo from $320

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 11/10. 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

Icelandair Logo
7:00 pm - 3:45 pmSEA-OSL
11h 45m1 stop
Icelandair Logo
1:10 pm - 5:00 pmOSL-SEA
12h 50m1 stop
$380Icelandair
Find Deal
Sun, Oct 19 - Tue, Nov 4
Icelandair Logo
7:00 pm - 3:45 pmSEA-OSL
11h 45m1 stop
Icelandair Logo
1:10 pm - 5:00 pmOSL-SEA
12h 50m1 stop
$385Icelandair
Find Deal
Sun, Oct 19 - Tue, Nov 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
$394Icelandair
Find Deal
Sat, Dec 6 - Fri, Dec 12
Icelandair Logo
3:35 pm - 11:35 amSEA-OSL
12h 00m1 stop
Icelandair Logo
9:30 pm - 5:00 pmOSL-SEA
28h 30m1 stop
$396Icelandair
Find Deal
Sat, Nov 1 - Sun, Nov 16
Scandinavian Airlines Logo
2:10 pm - 5:20 pmSEA-OSL
18h 10m2 stops
Scandinavian Airlines Logo
9:55 am - 2:00 pmOSL-SEA
13h 05m1 stop
$470Scandinavian Airlines
Find Deal
Wed, Oct 15 - Fri, Oct 24
British Airways Logo
6:50 pm - 6:40 pmSEA-OSL
14h 50m1 stop
British Airways Logo
3:05 pm - 11:30 amOSL-SEA
29h 25m1 stop
$478British Airways
Find Deal
Mon, Dec 8 - Thu, Dec 18
American Airlines Logo
1:30 pm - 11:40 pmSEA-OSL
25h 10m1 stop
American Airlines Logo
11:45 am - 11:18 pmOSL-SEA
20h 33m2 stops
$483American Airlines
Find Deal
Sun, Oct 19 - Tue, Nov 4
Scandinavian Airlines Logo
10:25 am - 6:15 pmSEA-OSL
23h 50m2 stops
Scandinavian Airlines Logo
5:55 am - 10:25 pmOSL-SEA
25h 30m2 stops
$484Scandinavian Airlines
Find Deal
Tue, Oct 28 - Fri, Nov 7
Delta Logo
2:05 pm - 4:20 pmSEA-OSL
17h 15m1 stop
Delta Logo
9:25 am - 11:50 amOSL-SEA
35h 25m1 stop
$496Delta
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Sun, Dec 7 - Mon, Dec 15
Delta Logo
8:25 pm - 1:45 pmSEA-OSL
32h 20m1 stop
Delta Logo
6:25 am - 11:25 amOSL-SEA
14h 00m1 stop
$497Delta
Find Deal
Sun, Oct 19 - Tue, Nov 4

Scandinavian Airlines flights from Seattle to Oslo Gardermoen Airport

Our best Scandinavian Airlines deals on Seattle to Oslo Gardermoen Airport flight tickets
Scandinavian Airlines
Oct 15
SEA2:10 pmSeattle/Tacoma Intl
18h 10m
2 stops
OSL5:20 pmOslo Gardermoen
Oct 24
OSL9:55 amOslo Gardermoen
13h 05m
1 stop
SEA2:00 pmSeattle/Tacoma Intl
$470
Find similar
Scandinavian Airlines
Oct 28
SEA10:25 amSeattle/Tacoma Intl
23h 50m
2 stops
OSL6:15 pmOslo Gardermoen
Nov 7
OSL5:55 amOslo Gardermoen
25h 30m
2 stops
SEA10:25 pmSeattle/Tacoma Intl
$484
Find similar
Scandinavian Airlines
Oct 28
SEA10:25 amSeattle/Tacoma Intl
23h 50m
2 stops
OSL6:15 pmOslo Gardermoen
Nov 7
OSL8:00 amOslo Gardermoen
23h 22m
2 stops
SEA10:22 pmSeattle/Tacoma Intl
$485
Find similar

Icelandair flights from Seattle to Oslo Gardermoen Airport

Our best Icelandair deals on Seattle to Oslo Gardermoen Airport flight tickets
Icelandair
Oct 19
SEA7:00 pmSeattle/Tacoma Intl
11h 45m
1 stop
OSL3:45 pmOslo Gardermoen
Nov 4
OSL1:10 pmOslo Gardermoen
12h 50m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$380
Find similar
Icelandair
Oct 19
SEA7:00 pmSeattle/Tacoma Intl
11h 45m
1 stop
OSL3:45 pmOslo Gardermoen
Nov 4
OSL1:10 pmOslo Gardermoen
12h 50m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$385
Find similar
Icelandair
Dec 6
SEA2:35 pmSeattle/Tacoma Intl
12h 00m
1 stop
OSL11:35 amOslo Gardermoen
Dec 12
OSL1:10 pmOslo Gardermoen
12h 50m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$394
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 September 17, 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 10/19

7:00 pm-3:45 pm

1 stop11h 45m

Oslo Gardermoen

Tue 11/4

1:10 pm-5:00 pm

1 stop12h 50m

$380

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 10/19

7:00 pm-3:45 pm

1 stop11h 45m

Oslo Gardermoen

Tue 11/4

1:10 pm-5:00 pm

1 stop12h 50m

$385

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 12/6

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Fri 12/12

1:10 pm-5:00 pm

1 stop12h 50m

$394

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 11/1

3:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 11/16

9:30 pm-5:00 pm

1 stop28h 30m

$396

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 10/15

2:10 pm-5:20 pm

2 stops18h 10m

Oslo Gardermoen

Fri 10/24

9:55 am-2:00 pm

1 stop13h 05m

$470

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 12/8

6:50 pm-6:40 pm

1 stop14h 50m

Oslo Gardermoen

Thu 12/18

3:05 pm-11:30 am

1 stop29h 25m

$478

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 10/19

1:30 pm-11:40 pm

1 stop25h 10m

Oslo Gardermoen

Tue 11/4

11:45 am-11:18 pm

2 stops20h 33m

$483

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 10/28

10:25 am-6:15 pm

2 stops23h 50m

Oslo Gardermoen

Fri 11/7

5:55 am-10:25 pm

2 stops25h 30m

$484

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 12/7

2:05 pm-4:20 pm

1 stop17h 15m

Oslo Gardermoen

Mon 12/15

9:25 am-11:50 am

1 stop35h 25m

$496

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 10/19

8:25 pm-1:45 pm

1 stop32h 20m

Oslo Gardermoen

Tue 11/4

6:25 am-11:25 am

1 stop14h 00m

$497

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 October. Flight prices, which tend to average around $499, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, 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 October, still average around $506.

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 $611 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 $527 on momondo.

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

As of September 2025, prices for Seattle to Oslo Gardermoen Airport flights are approximately 60% 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

Direct flights

None
There are no direct flights from Seattle to Oslo Gardermoen Airport. There are no popular flight routes from Seattle to Oslo Gardermoen Airport.
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  • 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
IcelandairPriceFrom $409Free CancellationRating
7.0
545 reviews
Search Icelandair flights
British AirwaysPriceFrom $475Free CancellationRating
6.7
7,367 reviews
Search British Airways flights
FinnairPriceFrom $484Free CancellationRating
7.6
1,324 reviews
Search Finnair flights
Scandinavian AirlinesPriceFrom $494Free CancellationRating
7.4
1,486 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $517Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
KLMPriceFrom $524Free CancellationRating
7.8
1,386 reviews
Search KLM flights
DeltaPriceFrom $545Free CancellationRating
7.9
7,961 reviews
Search Delta flights
LufthansaPriceFrom $551Free CancellationRating
6.8
7,409 reviews
Search Lufthansa flights
Air FrancePriceFrom $552Free CancellationRating
7.4
1,468 reviews
Search Air France flights
American AirlinesPriceFrom $578Free CancellationRating
7.2
10,000 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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