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Cheap flights from Seattle to Oslo from $349

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 12/2. 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 amSEA-OSL
12h 00m1 stop
Icelandair Logo
1:10 pm - 5:00 pmOSL-SEA
12h 50m1 stop
$391Icelandair
Find Deal
Thu, Dec 4 - Mon, Dec 15
Icelandair Logo
3:35 pm - 11:35 amSEA-OSL
12h 00m1 stop
Icelandair Logo
1:10 pm - 6:00 pmOSL-SEA
12h 50m1 stop
$392Icelandair
Find Deal
Mon, Mar 16 - Thu, Mar 26
Scandinavian Airlines Logo
2:00 pm - 8:15 pmSEA-OSL
21h 15m2 stops
Scandinavian Airlines Logo
1:05 pm - 10:16 pmOSL-SEA
18h 11m1 stop
$464Scandinavian Airlines
Find Deal
Wed, Apr 22 - Thu, Apr 30
Scandinavian Airlines Logo
2:00 pm - 7:00 pmSEA-OSL
20h 00m2 stops
Scandinavian Airlines Logo
9:00 pm - 1:45 pmOSL-SEA
25h 45m1 stop
$466Scandinavian Airlines
Find Deal
Sun, May 3 - Mon, Jun 1
Lufthansa Logo
1:40 pm - 5:30 pmSEA-OSL
18h 50m2 stops
Lufthansa Logo
6:15 am - 12:10 pmOSL-SEA
14h 55m1 stop
$468Lufthansa
Find Deal
Sun, Dec 7 - Thu, Dec 11
Lufthansa Logo
2:00 pm - 3:20 pmSEA-OSL
16h 20m1 stop
Lufthansa Logo
6:15 am - 12:10 pmOSL-SEA
14h 55m1 stop
$488Lufthansa
Find Deal
Mon, Nov 24 - Tue, Dec 9
British Airways Logo
6:12 am - 10:55 amSEA-OSL
19h 43m2 stops
British Airways Logo
6:55 am - 4:55 pmOSL-SEA
19h 00m1 stop
$493British Airways
Find Deal
Wed, Jan 14 - Wed, Jan 21
British Airways Logo
1:25 pm - 2:10 pmSEA-OSL
15h 45m1 stop
British Airways Logo
7:20 am - 10:07 pmOSL-SEA
23h 47m2 stops
$499British Airways
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Tue, Feb 3 - Tue, Feb 10
Delta Logo
4:48 pm - 6:50 pmSEA-OSL
17h 02m1 stop
Delta Logo
9:25 am - 11:50 amOSL-SEA
35h 25m1 stop
$501Delta
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Thu, Dec 4 - Mon, Dec 8
Delta Logo
7:35 am - 6:50 pmSEA-OSL
26h 15m2 stops
Delta Logo
6:30 am - 11:50 amOSL-SEA
14h 20m1 stop
$505Delta
Find Deal
Thu, Dec 4 - Thu, Dec 11

Scandinavian Airlines flights from Seattle to Oslo Gardermoen Airport

Our best Scandinavian Airlines deals on Seattle to Oslo Gardermoen Airport flight tickets
Scandinavian Airlines
Apr 22
SEA2:00 pmSeattle/Tacoma Intl
21h 15m
2 stops
OSL8:15 pmOslo Gardermoen
Apr 30
OSL1:05 pmOslo Gardermoen
18h 11m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$464
Find similar
Scandinavian Airlines
May 3
SEA2:00 pmSeattle/Tacoma Intl
20h 00m
2 stops
OSL7:00 pmOslo Gardermoen
Jun 1
OSL9:00 pmOslo Gardermoen
25h 45m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$466
Find similar
Scandinavian Airlines
Mar 17
SEA1:40 pmSeattle/Tacoma Intl
16h 35m
2 stops
OSL2:15 pmOslo Gardermoen
Apr 8
OSL1:05 pmOslo Gardermoen
18h 11m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$485
Find similar

Lufthansa flights from Seattle to Oslo Gardermoen Airport

Our best Lufthansa deals on Seattle to Oslo Gardermoen Airport flight tickets
Lufthansa
Dec 7
SEA1:40 pmSeattle/Tacoma Intl
18h 50m
2 stops
OSL5:30 pmOslo Gardermoen
Dec 11
OSL6:15 amOslo Gardermoen
14h 55m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$468
Find similar
Lufthansa
Nov 24
SEA2:00 pmSeattle/Tacoma Intl
16h 20m
1 stop
OSL3:20 pmOslo Gardermoen
Dec 9
OSL6:15 amOslo Gardermoen
14h 55m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$488
Find similar
Lufthansa
Nov 24
SEA12:35 pmSeattle/Tacoma Intl
19h 55m
2 stops
OSL5:30 pmOslo Gardermoen
Dec 9
OSL6:15 amOslo Gardermoen
25h 13m
2 stops
SEA10:28 pmSeattle/Tacoma Intl
$506
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 4, 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

Thu 12/4

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Mon 12/15

1:10 pm-5:00 pm

1 stop12h 50m

$391

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

$392

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 4/22

2:00 pm-8:15 pm

2 stops21h 15m

Oslo Gardermoen

Thu 4/30

1:05 pm-10:16 pm

1 stop18h 11m

$464

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 5/3

2:00 pm-7:00 pm

2 stops20h 00m

Oslo Gardermoen

Mon 6/1

9:00 pm-1:45 pm

1 stop25h 45m

$466

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 12/7

1:40 pm-5:30 pm

2 stops18h 50m

Oslo Gardermoen

Thu 12/11

6:15 am-12:10 pm

1 stop14h 55m

$468

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 11/24

2:00 pm-3:20 pm

1 stop16h 20m

Oslo Gardermoen

Tue 12/9

6:15 am-12:10 pm

1 stop14h 55m

$488

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 1/14

6:12 am-10:55 am

2 stops19h 43m

Oslo Gardermoen

Wed 1/21

6:55 am-4:55 pm

1 stop19h 00m

$493

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 2/3

1:25 pm-2:10 pm

1 stop15h 45m

Oslo Gardermoen

Tue 2/10

7:20 am-10:07 pm

2 stops23h 47m

$499

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 12/4

4:48 pm-6:50 pm

1 stop17h 02m

Oslo Gardermoen

Mon 12/8

9:25 am-11:50 am

1 stop35h 25m

$501

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 12/4

7:35 am-6:50 pm

2 stops26h 15m

Oslo Gardermoen

Thu 12/11

6:30 am-11:50 am

1 stop14h 20m

$505

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 $462, 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 $596 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 $528 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 1% 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
British AirwaysPriceFrom $368Free CancellationRating
6.7
7,496 reviews
Search British Airways flights
IcelandairPriceFrom $403Free CancellationRating
7.1
568 reviews
Search Icelandair flights
DeltaPriceFrom $468Free CancellationRating
7.9
8,003 reviews
Search Delta flights
FinnairPriceFrom $491Free CancellationRating
7.6
1,335 reviews
Search Finnair flights
Scandinavian AirlinesPriceFrom $494Free CancellationRating
7.4
1,560 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $517Free CancellationRating
7.4
9,002 reviews
Search United Airlines flights
KLMPriceFrom $524Free CancellationRating
7.7
1,405 reviews
Search KLM flights
LufthansaPriceFrom $551Free CancellationRating
6.8
7,552 reviews
Search Lufthansa flights
Air FrancePriceFrom $552Free CancellationRating
7.4
1,482 reviews
Search Air France flights
American AirlinesPriceFrom $564Free CancellationRating
7.2
11,040 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.

An easier way to manage your Oslo Gardermoen Airport trip

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