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Cheap flights from Oslo Gardermoen Airport to Seattle from $424

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
3:30 pm - 6:00 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
34h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 11:35 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
12h 00m1 stop Reykjavik Keflavik Intl
$528Icelandair
Mon, Oct 26 - Sun, Nov 8
Finnair Logo
8:50 pm - 7:57 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
32h 07m2 stops Helsinki-Vantaa Dallas/Fort Worth
Finnair Logo
1:38 pm - 8:05 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
21h 27m2 stops Los Angeles Helsinki-Vantaa
$530Finnair
Mon, Nov 9 - Tue, Nov 24
Icelandair Logo
9:30 pm - 5:00 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
28h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 11:35 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
12h 00m1 stop Reykjavik Keflavik Intl
$532Icelandair
Sun, Nov 1 - Sat, Nov 14
Icelandair Logo
4:30 pm - 5:55 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
34h 25m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 11:35 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
12h 00m1 stop Reykjavik Keflavik Intl
$536Icelandair
Mon, Oct 19 - Tue, Nov 3
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
$548Icelandair
Wed, Jan 27 - Mon, Feb 1
British Airways Logo
3:05 pm - 11:25 amOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
29h 20m1 stop London Heathrow
British Airways Logo
6:06 am - 4:00 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
24h 54m2 stops Chicago O'Hare Intl London Heathrow
$555British Airways
Wed, Jan 27 - Mon, Feb 1
Icelandair Logo
9:30 pm - 5:00 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
28h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 11:35 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
12h 00m1 stop Reykjavik Keflavik Intl
$563Icelandair
Sun, Nov 1 - Sat, Nov 14
British Airways Logo
8:40 am - 10:35 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
22h 55m2 stops Helsinki-Vantaa Dallas/Fort Worth
British Airways Logo
10:17 am - 4:00 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
20h 43m2 stops Chicago O'Hare Intl London Heathrow
$565British Airways
Wed, Jan 27 - Mon, Feb 1
British Airways Logo
5:05 pm - 11:35 amOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
27h 30m1 stop London Heathrow
British Airways Logo
6:45 pm - 10:40 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
18h 55m1 stop London Heathrow
$574British Airways
Mon, Oct 19 - Mon, Nov 2
British Airways Logo
5:05 pm - 11:35 amOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
27h 30m1 stop London Heathrow
British Airways Logo
10:43 am - 10:40 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
26h 57m2 stops Chicago O'Hare Intl London Heathrow
$574British Airways
Mon, Oct 19 - Mon, Nov 2

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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
Oct 26
OSL3:30 pmOslo Gardermoen
34h 30m
1 stop
SEA6:00 pmSeattle/Tacoma Intl
Nov 8
SEA2:35 pmSeattle/Tacoma Intl
12h 00m
1 stop
OSL11:35 amOslo Gardermoen
$528
Icelandair
Nov 1
OSL9:30 pmOslo Gardermoen
28h 30m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Nov 14
SEA2:35 pmSeattle/Tacoma Intl
12h 00m
1 stop
OSL11:35 amOslo Gardermoen
$532
Icelandair
Oct 26
OSL3:30 pmOslo Gardermoen
34h 30m
1 stop
SEA6:00 pmSeattle/Tacoma Intl
Nov 8
SEA2:35 pmSeattle/Tacoma Intl
12h 00m
1 stop
OSL11:35 amOslo Gardermoen
$535

Finnair flights from Oslo Gardermoen Airport to Seattle

Our best Finnair deals on Oslo Gardermoen Airport to Seattle flight tickets
Finnair
Nov 9
OSL8:50 pmOslo Gardermoen
32h 07m
2 stops
SEA7:57 pmSeattle/Tacoma Intl
Nov 24
SEA1:38 pmSeattle/Tacoma Intl
21h 27m
2 stops
OSL8:05 pmOslo Gardermoen
$530
Finnair
Oct 26
OSL12:30 pmOslo Gardermoen
20h 06m
2 stops
SEA12:36 amSeattle/Tacoma Intl
Nov 8
SEA1:35 pmSeattle/Tacoma Intl
21h 30m
2 stops
OSL8:05 pmOslo Gardermoen
$637

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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Price

Cheapest round-trip

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 10/26

3:30 pm-6:00 pm

1 stop34h 30m

Seattle/Tacoma Intl

Sun 11/8

2:35 pm-11:35 am

1 stop12h 00m

$528

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 11/9

8:50 pm-7:57 pm

2 stops32h 07m

Seattle/Tacoma Intl

Tue 11/24

1:38 pm-8:05 pm

2 stops21h 27m

$530

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sun 11/1

9:30 pm-5:00 pm

1 stop28h 30m

Seattle/Tacoma Intl

Sat 11/14

2:35 pm-11:35 am

1 stop12h 00m

$532

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 10/19

4:30 pm-5:55 pm

1 stop34h 25m

Seattle/Tacoma Intl

Tue 11/3

2:35 pm-11:35 am

1 stop12h 00m

$536
Quickest round-trip

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Wed 1/27

1:10 pm-5:00 pm

1 stop12h 50m

Seattle/Tacoma Intl

Mon 2/1

2:35 pm-11:35 am

1 stop12h 00m

$548

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Wed 1/27

3:05 pm-11:25 am

1 stop29h 20m

Seattle/Tacoma Intl

Mon 2/1

6:06 am-4:00 pm

2 stops24h 54m

$555

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sun 11/1

9:30 pm-5:00 pm

1 stop28h 30m

Seattle/Tacoma Intl

Sat 11/14

2:35 pm-11:35 am

1 stop12h 00m

$563

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Wed 1/27

8:40 am-10:35 pm

2 stops22h 55m

Seattle/Tacoma Intl

Mon 2/1

10:17 am-4:00 pm

2 stops20h 43m

$565

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 10/19

5:05 pm-11:35 am

1 stop27h 30m

Seattle/Tacoma Intl

Mon 11/2

6:45 pm-10:40 pm

1 stop18h 55m

$574

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 10/19

5:05 pm-11:35 am

1 stop27h 30m

Seattle/Tacoma Intl

Mon 11/2

10:43 am-10:40 pm

2 stops26h 57m

$574

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 typical for flights on this route.

Typical prices usually range from $518 to $674.
The lowest price recently found on this route was $527.

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 $552. 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 $595 on momondo.

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

You could potentially save up to 5% 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 September 2026, prices for Oslo Gardermoen Airport to Seattle flights are approximately 10% cheaper 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

$424

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 $424. The best round-trip flight deal from Oslo Gardermoen Airport to Seattle found on momondo in the last 72 hours is $528.
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
747 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $588Free CancellationRating
7.4
1,987 reviews
Search Scandinavian Airlines flights

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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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