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Cheap flights from Seattle to Oslo from $221

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 4/1. 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 am
SEA
-
OSL
12h 00m1 stop
Icelandair Logo
1:10 pm - 5:00 pm
OSL
-
SEA
12h 50m1 stop
$393Icelandair
Fri, Jan 23 - Thu, Jan 29
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
$396Icelandair
Sun, Jan 18 - Sun, Feb 1
Icelandair Logo
2:35 pm - 11:35 am
SEA
-
OSL
12h 00m1 stop
Icelandair Logo
1:05 pm - 5:00 pm
OSL
-
SEA
12h 55m1 stop
$422Icelandair
Thu, Jan 22 - Sun, Feb 8
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
$468Icelandair
Sun, Jan 11 - Mon, Jan 26
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
$487Icelandair
Mon, Mar 16 - Thu, Mar 26
Lufthansa Logo
7:00 am - 3:20 pm
SEA
-
OSL
23h 20m2 stops
Lufthansa Logo
1:50 pm - 12:10 pm
OSL
-
SEA
31h 20m1 stop
$489Lufthansa
Wed, Feb 11 - Wed, Feb 18
British Airways Logo
8:20 pm - 6:40 pm
SEA
-
OSL
13h 20m1 stop
British Airways Logo
11:35 am - 11:35 am
OSL
-
SEA
33h 00m1 stop
$491British Airways
Mon, Mar 30 - Mon, Apr 13
Multiple Airlines Logo
10:10 am - 10:05 pm
SEA
-
OSL
26h 55m2 stops
Multiple Airlines Logo
6:35 am - 10:08 pm
OSL
-
SEA
24h 33m2 stops
$492Multiple Airlines
Wed, Apr 15 - Wed, Apr 22
Multiple Airlines Logo
3:40 pm - 5:55 pm
SEA
-
OSL
17h 15m2 stops
Multiple Airlines Logo
6:45 am - 7:18 pm
OSL
-
SEA
21h 33m2 stops
$493Multiple Airlines
Mon, Mar 30 - Mon, Apr 13
Multiple Airlines Logo
3:40 pm - 5:55 pm
SEA
-
OSL
17h 15m2 stops
Multiple Airlines Logo
6:45 am - 12:20 pm
OSL
-
SEA
14h 35m1 stop
$495Multiple Airlines
Mon, Mar 30 - Mon, Apr 13

Icelandair flights from Seattle to Oslo Gardermoen Airport

Our best Icelandair deals on Seattle to Oslo Gardermoen Airport flight tickets
Icelandair
Jan 23
SEA2:35 pmSeattle/Tacoma Intl
12h 00m
1 stop
OSL11:35 amOslo Gardermoen
Jan 29
OSL1:10 pmOslo Gardermoen
12h 50m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$393
Find similar
Icelandair
Jan 18
SEA2:35 pmSeattle/Tacoma Intl
12h 00m
1 stop
OSL11:35 amOslo Gardermoen
Feb 1
OSL9:30 pmOslo Gardermoen
28h 30m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$396
Find similar
Icelandair
Jan 22
SEA2:35 pmSeattle/Tacoma Intl
12h 00m
1 stop
OSL11:35 amOslo Gardermoen
Feb 8
OSL1:05 pmOslo Gardermoen
12h 55m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$422
Find similar

Lufthansa flights from Seattle to Oslo Gardermoen Airport

Our best Lufthansa deals on Seattle to Oslo Gardermoen Airport flight tickets
Lufthansa
Feb 11
SEA7:00 amSeattle/Tacoma Intl
23h 20m
2 stops
OSL3:20 pmOslo Gardermoen
Feb 18
OSL1:50 pmOslo Gardermoen
31h 20m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$489
Find similar
Lufthansa
Feb 19
SEA7:00 amSeattle/Tacoma Intl
25h 40m
2 stops
OSL5:40 pmOslo Gardermoen
Mar 3
OSL6:15 amOslo Gardermoen
14h 55m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$496
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
$497
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 30, 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

Fri 1/23

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Thu 1/29

1:10 pm-5:00 pm

1 stop12h 50m

$393

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/18

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 2/1

9:30 pm-5:00 pm

1 stop28h 30m

$396

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 1/22

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 2/8

1:05 pm-5:00 pm

1 stop12h 55m

$422

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

$468

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

$487

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 2/11

7:00 am-3:20 pm

2 stops23h 20m

Oslo Gardermoen

Wed 2/18

1:50 pm-12:10 pm

1 stop31h 20m

$489

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/30

8:20 pm-6:40 pm

1 stop13h 20m

Oslo Gardermoen

Mon 4/13

11:35 am-11:35 am

1 stop33h 00m

$491

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 4/15

10:10 am-10:05 pm

2 stops26h 55m

Oslo Gardermoen

Wed 4/22

6:35 am-10:08 pm

2 stops24h 33m

$492

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/30

3:40 pm-5:55 pm

2 stops17h 15m

Oslo Gardermoen

Mon 4/13

6:45 am-7:18 pm

2 stops21h 33m

$493

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/30

3:40 pm-5:55 pm

2 stops17h 15m

Oslo Gardermoen

Mon 4/13

6:45 am-12:20 pm

1 stop14h 35m

$495

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.

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 $602 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
7,623 reviews
Search British Airways flights
IcelandairPriceFrom $403Free CancellationRating
7.0
592 reviews
Search Icelandair flights
DeltaPriceFrom $478Free CancellationRating
7.9
8,014 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $492Free CancellationRating
7.4
1,632 reviews
Search Scandinavian Airlines flights
American AirlinesPriceFrom $510Free CancellationRating
7.2
11,074 reviews
Search American Airlines flights
United AirlinesPriceFrom $517Free CancellationRating
7.4
9,121 reviews
Search United Airlines flights
KLMPriceFrom $524Free CancellationRating
7.7
1,435 reviews
Search KLM flights
LufthansaPriceFrom $551Free CancellationRating
6.8
7,662 reviews
Search Lufthansa flights
Air FrancePriceFrom $552Free CancellationRating
7.4
1,516 reviews
Search Air France flights
FinnairPriceFrom $569Free CancellationRating
7.6
1,342 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.

An easier way to manage your Oslo Gardermoen Airport trip

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