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Cheap flights from Oslo Gardermoen Airport to Seattle from $372

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Oslo Gardermoen Airport to Seattle departing on 8/31. 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 Oslo Gardermoen Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
1:50 pm - 8:40 pm
OSL
-
SEA
15h 50m
1 stop
Icelandair Logo
7:00 pm - 12:35 pm
SEA
-
OSL
32h 35m
1 stop
$480Icelandair
Thu, Apr 23 - Thu, May 7
Icelandair Logo
1:50 pm - 5:55 pm
OSL
-
SEA
13h 05m
1 stop
Icelandair Logo
11:25 pm - 3:25 pm
SEA
-
OSL
31h 00m
1 stop
$484Icelandair
Thu, May 7 - Wed, May 20
British Airways Logo
8:05 pm - 11:35 am
OSL
-
SEA
24h 30m
1 stop
British Airways Logo
8:20 pm - 11:25 pm
SEA
-
OSL
18h 05m
1 stop
$531British Airways
Thu, Jun 11 - Wed, Jul 1
Multiple Airlines Logo
7:15 pm - 11:42 am
OSL
-
SEA
25h 27m
1 stop
Multiple Airlines Logo
6:40 pm - 11:20 pm
SEA
-
OSL
19h 40m
1 stop
$544Multiple Airlines
Wed, May 20 - Wed, May 27
American Airlines Logo
12:50 pm - 12:36 am
OSL
-
SEA
20h 46m
2 stops
American Airlines Logo
8:20 pm - 11:25 pm
SEA
-
OSL
18h 05m
1 stop
$547American Airlines
Wed, May 20 - Wed, May 27
Delta Logo
11:50 am - 4:30 pm
OSL
-
SEA
13h 40m
1 stop
Delta Logo
1:45 pm - 6:35 pm
SEA
-
OSL
19h 50m
1 stop
$548Delta
Wed, May 20 - Wed, May 27
Delta Logo
6:30 am - 7:05 pm
OSL
-
SEA
21h 35m
2 stops
Delta Logo
10:35 am - 4:20 pm
SEA
-
OSL
20h 45m
2 stops
$554Delta
Wed, May 20 - Wed, May 27
Delta Logo
11:50 am - 4:30 pm
OSL
-
SEA
13h 40m
1 stop
Delta Logo
10:35 am - 4:20 pm
SEA
-
OSL
20h 45m
2 stops
$557Delta
Thu, Apr 23 - Thu, May 7
Delta Logo
6:30 am - 6:28 pm
OSL
-
SEA
20h 58m
2 stops
Delta Logo
10:35 am - 4:20 pm
SEA
-
OSL
20h 45m
2 stops
$563Delta
Thu, Apr 23 - Thu, May 7
Icelandair Logo
1:50 pm - 8:40 pm
OSL
-
SEA
15h 50m
1 stop
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
$575Icelandair
Thu, Sep 3 - Thu, Sep 10

British Airways flights from Oslo Gardermoen Airport to Seattle

Our best British Airways deals on Oslo Gardermoen Airport to Seattle flight tickets
British Airways
Jun 11
OSL8:05 pmOslo Gardermoen
24h 30m
1 stop
SEA11:35 amSeattle/Tacoma Intl
Jul 1
SEA8:20 pmSeattle/Tacoma Intl
18h 05m
1 stop
OSL11:25 pmOslo Gardermoen
$531
British Airways
May 6
OSL7:45 amOslo Gardermoen
23h 53m
2 stops
SEA10:38 pmSeattle/Tacoma Intl
May 10
SEA8:20 pmSeattle/Tacoma Intl
18h 20m
1 stop
OSL11:40 pmOslo Gardermoen
$642
British Airways
Jun 12
OSL5:05 pmOslo Gardermoen
27h 30m
1 stop
SEA11:35 amSeattle/Tacoma Intl
Jul 1
SEA8:20 pmSeattle/Tacoma Intl
29h 35m
1 stop
OSL10:55 amOslo Gardermoen
$686

American Airlines flights from Oslo Gardermoen Airport to Seattle

Our best American Airlines deals on Oslo Gardermoen Airport to Seattle flight tickets
American Airlines
May 20
OSL12:50 pmOslo Gardermoen
20h 46m
2 stops
SEA12:36 amSeattle/Tacoma Intl
May 27
SEA8:20 pmSeattle/Tacoma Intl
18h 05m
1 stop
OSL11:25 pmOslo Gardermoen
$547
American Airlines
Jul 30
OSL7:45 amOslo Gardermoen
25h 04m
2 stops
SEA11:49 pmSeattle/Tacoma Intl
Aug 4
SEA6:00 amSeattle/Tacoma Intl
32h 20m
2 stops
OSL11:20 pmOslo Gardermoen
$722
American Airlines
Jul 29
OSL11:35 amOslo Gardermoen
33h 00m
1 stop
SEA11:35 amSeattle/Tacoma Intl
Aug 4
SEA6:00 amSeattle/Tacoma Intl
32h 20m
2 stops
OSL11:20 pmOslo Gardermoen
$736

momondo Fare Finder

 
Customize your flight search to find flights from Oslo Gardermoen Airport to Seattle 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 April 10, 2026.
Use the filters below to find and compare flights from Oslo Gardermoen Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/23

1:50 pm-8:40 pm

1 stop15h 50m

Seattle/Tacoma Intl

Thu 5/7

7:00 pm-12:35 pm

1 stop32h 35m

$480

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 5/7

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Wed 5/20

11:25 pm-3:25 pm

1 stop31h 00m

$484

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 6/11

8:05 pm-11:35 am

1 stop24h 30m

Seattle/Tacoma Intl

Wed 7/1

8:20 pm-11:25 pm

1 stop18h 05m

$531

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 5/20

7:15 pm-11:42 am

1 stop25h 27m

Seattle/Tacoma Intl

Wed 5/27

6:40 pm-11:20 pm

1 stop19h 40m

$544

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 5/20

12:50 pm-12:36 am

2 stops20h 46m

Seattle/Tacoma Intl

Wed 5/27

8:20 pm-11:25 pm

1 stop18h 05m

$547

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 5/20

11:50 am-4:30 pm

1 stop13h 40m

Seattle/Tacoma Intl

Wed 5/27

1:45 pm-6:35 pm

1 stop19h 50m

$548

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 5/20

6:30 am-7:05 pm

2 stops21h 35m

Seattle/Tacoma Intl

Wed 5/27

10:35 am-4:20 pm

2 stops20h 45m

$554

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/23

11:50 am-4:30 pm

1 stop13h 40m

Seattle/Tacoma Intl

Thu 5/7

10:35 am-4:20 pm

2 stops20h 45m

$557

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/23

6:30 am-6:28 pm

2 stops20h 58m

Seattle/Tacoma Intl

Thu 5/7

10:35 am-4:20 pm

2 stops20h 45m

$563
Quickest round-trip

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 9/3

1:50 pm-8:40 pm

1 stop15h 50m

Seattle/Tacoma Intl

Thu 9/10

7:00 pm-3:25 pm

1 stop11h 25m

$575

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?

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 $507. If you don’t want to visit Seattle in October, then you should wait until February to fly from Oslo Gardermoen Airport, when ticket prices are also cheap, with an average price of $511.

How far in advance should I book a flight 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 $602 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 $559 on momondo.

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

You could potentially save up to 25% 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 April 2026, prices for Oslo Gardermoen Airport to Seattle flights are approximately 11% 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

Fastest flight time

13h 05m

Direct flights

None
The fastest flight from Oslo Gardermoen Airport to Seattle takes 13h 05m
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. 13h 05m 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
7.0
632 reviews
Search Icelandair flights
LufthansaPriceFrom $474Free CancellationRating
6.8
7,905 reviews
Search Lufthansa flights
Scandinavian AirlinesPriceFrom $588Free CancellationRating
7.3
1,748 reviews
Search Scandinavian Airlines flights

Traveling to a place near Seattle?

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Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Oslo to Seattle. Millions of users trust and use momondo every year so you are in good hands.

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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