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Cheap flights from Oslo Gardermoen Airport to Seattle from $359

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Oslo Gardermoen Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
1:50 pm - 5:55 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
13h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 12:35 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
11h 55m1 stop Reykjavik Keflavik Intl
$398Icelandair
Tue, Apr 20 - Sat, Apr 24
Icelandair Logo
1:50 pm - 5:55 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
13h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 12:35 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
11h 55m1 stop Reykjavik Keflavik Intl
$458Icelandair
Tue, Apr 20 - Sat, Apr 24
British Airways Logo
3:10 pm - 11:25 amOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
29h 15m1 stop London Heathrow
British Airways Logo
6:45 pm - 11:00 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
31h 15m1 stop London Heathrow
$460British Airways
Fri, Dec 25 - Sun, Jan 10
Icelandair Logo
4:20 pm - 8:40 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
13h 20m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 3:20 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
14h 40m1 stop Reykjavik Keflavik Intl
$463Icelandair
Sat, Apr 3 - Mon, Apr 5
British Airways Logo
3:10 pm - 11:25 amOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
29h 15m1 stop London Heathrow
British Airways Logo
6:06 am - 11:00 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
43h 54m2 stops Chicago O'Hare Intl London Heathrow
$480British Airways
Fri, Dec 25 - Sun, Jan 10
Multiple Airlines Logo
8:50 pm - 11:48 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
35h 58m2 stops Helsinki-Vantaa Dallas/Fort Worth
Multiple Airlines Logo
5:10 am - 4:35 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
26h 25m2 stops Dallas/Fort Worth Helsinki-Vantaa
$498Multiple Airlines
Sun, Dec 6 - Sun, Dec 13
Icelandair Logo
1:10 pm - 5:00 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
12h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 11:35 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
12h 00m1 stop Reykjavik Keflavik Intl
$513Icelandair
Fri, Dec 25 - Sun, Jan 10
Scandinavian Airlines Logo
9:05 pm - 10:12 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
34h 07m2 stops Kastrup Copenhagen Los Angeles
Scandinavian Airlines Logo
2:40 pm - 6:15 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
18h 35m2 stops Los Angeles Kastrup Copenhagen
$849Scandinavian Airlines
Sat, Dec 19 - Mon, Jan 4
Scandinavian Airlines Logo
12:10 pm - 10:12 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
19h 02m2 stops Kastrup Copenhagen Los Angeles
Scandinavian Airlines Logo
11:15 pm - 11:15 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
27h 00m2 stops Boston Logan Intl Kastrup Copenhagen
$893Scandinavian Airlines
Mon, Dec 21 - Mon, Dec 28
Scandinavian Airlines Logo
9:05 pm - 10:12 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
34h 07m2 stops Kastrup Copenhagen Los Angeles
Scandinavian Airlines Logo
2:00 pm - 6:15 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
19h 15m2 stops Los Angeles Kastrup Copenhagen
$935Scandinavian Airlines
Sat, Dec 19 - Sun, Jan 3

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Icelandair flights from Oslo Gardermoen Airport to Seattle

Our best Icelandair deals on Oslo Gardermoen Airport to Seattle flight tickets
Icelandair
Apr 20
OSL1:50 pmOslo Gardermoen
13h 05m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
Apr 24
SEA3:40 pmSeattle/Tacoma Intl
11h 55m
1 stop
OSL12:35 pmOslo Gardermoen
$398
Icelandair
Apr 20
OSL1:50 pmOslo Gardermoen
13h 05m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
Apr 24
SEA3:40 pmSeattle/Tacoma Intl
11h 55m
1 stop
OSL12:35 pmOslo Gardermoen
$458
Icelandair
Apr 3
OSL4:20 pmOslo Gardermoen
13h 20m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Apr 5
SEA3:40 pmSeattle/Tacoma Intl
14h 40m
1 stop
OSL3:20 pmOslo Gardermoen
$463

British Airways flights from Oslo Gardermoen Airport to Seattle

Our best British Airways deals on Oslo Gardermoen Airport to Seattle flight tickets
British Airways
Dec 25
OSL3:10 pmOslo Gardermoen
29h 15m
1 stop
SEA11:25 amSeattle/Tacoma Intl
Jan 10
SEA6:45 pmSeattle/Tacoma Intl
31h 15m
1 stop
OSL11:00 amOslo Gardermoen
$460
British Airways
Dec 25
OSL3:10 pmOslo Gardermoen
29h 15m
1 stop
SEA11:25 amSeattle/Tacoma Intl
Jan 10
SEA6:06 amSeattle/Tacoma Intl
43h 54m
2 stops
OSL11:00 amOslo Gardermoen
$480
British Airways
Apr 20
OSL11:15 amOslo Gardermoen
20h 23m
2 stops
SEA10:38 pmSeattle/Tacoma Intl
Apr 24
SEA11:55 pmSeattle/Tacoma Intl
25h 45m
2 stops
OSL10:40 amOslo Gardermoen
$512

momondo Fare Finder

 
Use the filters below to find and compare flights from Oslo Gardermoen Airport to Seattle that are best for you.

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Route

Depart

Return

Price

Cheapest round-trip

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Tue 4/20

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sat 4/24

3:40 pm-12:35 pm

1 stop11h 55m

$398

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Tue 4/20

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sat 4/24

3:40 pm-12:35 pm

1 stop11h 55m

$458

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Fri 12/25

3:10 pm-11:25 am

1 stop29h 15m

Seattle/Tacoma Intl

Sun 1/10

6:45 pm-11:00 am

1 stop31h 15m

$460

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sat 4/3

4:20 pm-8:40 pm

1 stop13h 20m

Seattle/Tacoma Intl

Mon 4/5

3:40 pm-3:20 pm

1 stop14h 40m

$463

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Fri 12/25

3:10 pm-11:25 am

1 stop29h 15m

Seattle/Tacoma Intl

Sun 1/10

6:06 am-11:00 am

2 stops43h 54m

$480

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sun 12/6

8:50 pm-11:48 pm

2 stops35h 58m

Seattle/Tacoma Intl

Sun 12/13

5:10 am-4:35 pm

2 stops26h 25m

$498
Quickest round-trip

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Fri 12/25

1:10 pm-5:00 pm

1 stop12h 50m

Seattle/Tacoma Intl

Sun 1/10

2:35 pm-11:35 am

1 stop12h 00m

$513

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sat 12/19

9:05 pm-10:12 pm

2 stops34h 07m

Seattle/Tacoma Intl

Mon 1/4

2:40 pm-6:15 pm

2 stops18h 35m

$849

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 12/21

12:10 pm-10:12 pm

2 stops19h 02m

Seattle/Tacoma Intl

Mon 12/28

11:15 pm-11:15 am

2 stops27h 00m

$893

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sat 12/19

9:05 pm-10:12 pm

2 stops34h 07m

Seattle/Tacoma Intl

Sun 1/3

2:00 pm-6:15 pm

2 stops19h 15m

$935

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 Seattle from

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

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 typical price of a round-trip flight between Oslo Gardermoen Airport and Seattle?

Prices are currently low for flights on this route.

Typical prices usually range from $549 to $635.
The lowest price recently found on this route was $398.

What is the cheapest month to fly to Seattle?

In general, October is the cheapest month to fly from Oslo Gardermoen Airport to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $543. If you don’t want to visit Seattle in October, then you should wait until April to fly from Oslo Gardermoen Airport, when ticket prices are also cheap, with an average price of $552.

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

You are more likely to see cheaper flights to Seattle from Oslo Gardermoen Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $662 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Oslo Gardermoen Airport for as low as $592 on momondo.

Can stopping save me money on Oslo Gardermoen Airport to Seattle flights?

You could potentially save up to 7% on your flight if you consider stops on a Oslo Gardermoen Airport to Seattle flight.

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

As of November 2026, prices for Oslo Gardermoen Airport to Seattle flights are approximately 15% more expensive when compared to flights at the same time last year.

When to book flights from Oslo Gardermoen Airport to Seattle

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

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

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

Best Price Found

$359

Fastest flight time

12h 50m

Direct flights

None
The best one-way flight to Seattle from Oslo Gardermoen Airport in the past 72 hours is $359. The best round-trip flight deal from Oslo Gardermoen Airport to Seattle found on momondo in the last 72 hours is $398.
The fastest flight from Oslo Gardermoen Airport to Seattle takes 12h 50m
There are no direct flights from Oslo Gardermoen Airport to Seattle. There are no popular flight routes from Oslo Gardermoen Airport to Seattle.
Search flight deals

Frequently asked questions about flying from Oslo Gardermoen Airport to Seattle

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

    Seattle/Tacoma Intl is 4540.7 mi away from Oslo Gardermoen. 12h 50m is a normal flight duration for this route.

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

    Prices for flights from Oslo Gardermoen Airport to Seattle/Tacoma Intl Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Oslo Gardermoen Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Oslo Gardermoen Airport to Seattle

Compare and see reviews for airlines that fly from Oslo Gardermoen Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $443Free CancellationRating
6.9
767 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $588Free CancellationRating
7.5
2,025 reviews
Search Scandinavian Airlines flights

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Why use momondo?

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

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

Flights from Oslo to Seattle 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 Oslo to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Oslo to Seattle.

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

Yes momondo offers price alerts on flights to Seattle from Oslo. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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