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Cheap flights from Oslo Gardermoen Airport to Seattle from $299

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 6/15. 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
1:10 pm - 6:00 pm
OSL
-
SEA
12h 50m
1 stop
Icelandair Logo
3:35 pm - 11:35 am
SEA
-
OSL
12h 00m
1 stop
$409Icelandair
Thu, Mar 19 - Thu, Mar 26
Icelandair Logo
9:30 pm - 6:00 pm
OSL
-
SEA
28h 30m
1 stop
Icelandair Logo
3:35 pm - 11:35 am
SEA
-
OSL
12h 00m
1 stop
$413Icelandair
Sun, Mar 8 - Tue, Mar 24
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
$463Icelandair
Thu, Apr 23 - Mon, Apr 27
Icelandair Logo
4:30 pm - 8:40 pm
OSL
-
SEA
13h 10m
1 stop
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
$466Icelandair
Thu, Apr 23 - Mon, Apr 27
Icelandair Logo
1:10 pm - 5:00 pm
OSL
-
SEA
12h 50m
1 stop
Icelandair Logo
3:35 pm - 11:35 am
SEA
-
OSL
12h 00m
1 stop
$468Icelandair
Wed, Mar 4 - Wed, Mar 11
Icelandair Logo
9:30 pm - 6:00 pm
OSL
-
SEA
28h 30m
1 stop
Icelandair Logo
3:35 pm - 11:35 am
SEA
-
OSL
12h 00m
1 stop
$470Icelandair
Sun, Mar 8 - Tue, Mar 24
Finnair Logo
12:25 pm - 12:30 pm
OSL
-
SEA
32h 05m
2 stops
Finnair Logo
6:53 am - 12:00 pm
SEA
-
OSL
21h 07m
2 stops
$471Finnair
Thu, Mar 19 - Thu, Mar 26
Lufthansa Logo
6:10 am - 1:20 pm
OSL
-
SEA
16h 10m
1 stop
Lufthansa Logo
7:00 am - 5:40 pm
SEA
-
OSL
26h 40m
2 stops
$495Lufthansa
Sun, Mar 8 - Tue, Mar 24
Delta Logo
6:30 am - 11:45 am
OSL
-
SEA
14h 15m
1 stop
Delta Logo
5:30 pm - 6:35 pm
SEA
-
OSL
16h 05m
1 stop
$500Delta
Tue, Mar 31 - Mon, Apr 6
KLM Logo
7:15 pm - 11:45 am
OSL
-
SEA
25h 30m
1 stop
KLM Logo
5:30 pm - 10:35 pm
SEA
-
OSL
20h 05m
1 stop
$502KLM
Mon, Mar 30 - Mon, Apr 6

Delta flights from Oslo Gardermoen Airport to Seattle

Our best Delta deals on Oslo Gardermoen Airport to Seattle flight tickets
Delta
Mar 31
OSL6:30 amOslo Gardermoen
14h 15m
1 stop
SEA11:45 amSeattle/Tacoma Intl
Apr 6
SEA5:30 pmSeattle/Tacoma Intl
16h 05m
1 stop
OSL6:35 pmOslo Gardermoen
$500
Delta
Mar 4
OSL6:30 amOslo Gardermoen
14h 05m
1 stop
SEA11:35 amSeattle/Tacoma Intl
Mar 11
SEA7:20 amSeattle/Tacoma Intl
17h 20m
2 stops
OSL8:40 amOslo Gardermoen
$503
Delta
Mar 31
OSL11:50 amOslo Gardermoen
19h 20m
2 stops
SEA10:10 pmSeattle/Tacoma Intl
Apr 6
SEA5:30 pmSeattle/Tacoma Intl
16h 05m
1 stop
OSL6:35 pmOslo Gardermoen
$505

United Airlines flights from Oslo Gardermoen Airport to Seattle

Our best United Airlines deals on Oslo Gardermoen Airport to Seattle flight tickets
United Airlines
Apr 23
OSL7:05 amOslo Gardermoen
14h 15m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
Apr 27
SEA11:59 pmSeattle/Tacoma Intl
32h 16m
2 stops
OSL5:15 pmOslo Gardermoen
$547
United Airlines
Apr 23
OSL7:05 amOslo Gardermoen
14h 15m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
Apr 27
SEA7:00 amSeattle/Tacoma Intl
25h 15m
2 stops
OSL5:15 pmOslo Gardermoen
$550
United Airlines
Mar 18
OSL6:05 amOslo Gardermoen
23h 09m
2 stops
SEA9:14 pmSeattle/Tacoma Intl
Mar 25
SEA3:30 pmSeattle/Tacoma Intl
18h 10m
2 stops
OSL5:40 pmOslo Gardermoen
$552

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 February 3, 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

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 3/19

1:10 pm-6:00 pm

1 stop12h 50m

Seattle/Tacoma Intl

Thu 3/26

3:35 pm-11:35 am

1 stop12h 00m

$409

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 3/8

9:30 pm-6:00 pm

1 stop28h 30m

Seattle/Tacoma Intl

Tue 3/24

3:35 pm-11:35 am

1 stop12h 00m

$413

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/23

1:50 pm-8:40 pm

1 stop15h 50m

Seattle/Tacoma Intl

Mon 4/27

7:00 pm-3:25 pm

1 stop11h 25m

$463

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/23

4:30 pm-8:40 pm

1 stop13h 10m

Seattle/Tacoma Intl

Mon 4/27

7:00 pm-3:25 pm

1 stop11h 25m

$466

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 3/4

1:10 pm-5:00 pm

1 stop12h 50m

Seattle/Tacoma Intl

Wed 3/11

3:35 pm-11:35 am

1 stop12h 00m

$468

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 3/8

9:30 pm-6:00 pm

1 stop28h 30m

Seattle/Tacoma Intl

Tue 3/24

3:35 pm-11:35 am

1 stop12h 00m

$470

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 3/19

12:25 pm-12:30 pm

2 stops32h 05m

Seattle/Tacoma Intl

Thu 3/26

6:53 am-12:00 pm

2 stops21h 07m

$471

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 3/8

6:10 am-1:20 pm

1 stop16h 10m

Seattle/Tacoma Intl

Tue 3/24

7:00 am-5:40 pm

2 stops26h 40m

$495

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Tue 3/31

6:30 am-11:45 am

1 stop14h 15m

Seattle/Tacoma Intl

Mon 4/6

5:30 pm-6:35 pm

1 stop16h 05m

$500

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 3/30

7:15 pm-11:45 am

1 stop25h 30m

Seattle/Tacoma Intl

Mon 4/6

5:30 pm-10:35 pm

1 stop20h 05m

$502

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, May 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 $486. If you don’t want to visit Seattle in May, then you should wait until October to fly from Oslo Gardermoen Airport, when ticket prices are also cheap, with an average price of $504.

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 $596 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 $505 on momondo.

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

You could potentially save up to 40% 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 February 2026, prices for Oslo Gardermoen Airport to Seattle flights are approximately 40% 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

Fastest flight time

12h 50m

Direct flights

None
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

  • 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
LufthansaPriceFrom $436Free CancellationRating
6.8
7,758 reviews
Search Lufthansa flights
IcelandairPriceFrom $436Free CancellationRating
7.1
606 reviews
Search Icelandair flights
DeltaPriceFrom $455Free CancellationRating
7.9
8,138 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $603Free CancellationRating
7.3
1,676 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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