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Cheap flights from Oslo Gardermoen Airport to Seattle from $276

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 2/4. 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

Icelandair Logo
1:10 pm - 5:00 pmOSL-SEA
12h 50m1 stop
Icelandair Logo
3:35 pm - 8:35 pmSEA-OSL
21h 00m1 stop
$402Icelandair
Find Deal
Thu, Mar 5 - Sat, Mar 14
Icelandair Logo
4:45 pm - 8:40 pmOSL-SEA
12h 55m1 stop
Icelandair Logo
7:00 pm - 12:35 pmSEA-OSL
32h 35m1 stop
$404Icelandair
Find Deal
Mon, Oct 6 - Sun, Oct 19
Lufthansa Logo
6:35 am - 11:55 amOSL-SEA
14h 20m1 stop
Lufthansa Logo
2:20 pm - 12:15 pmSEA-OSL
12h 55m1 stop
$448Lufthansa
Find Deal
Sat, Oct 4 - Wed, Oct 15
Lufthansa Logo
6:35 am - 8:44 pmOSL-SEA
23h 09m2 stops
Lufthansa Logo
2:20 pm - 3:40 pmSEA-OSL
16h 20m1 stop
$449Lufthansa
Find Deal
Sat, Oct 4 - Wed, Oct 15
British Airways Logo
7:10 am - 4:55 pmOSL-SEA
18h 45m1 stop
British Airways Logo
6:50 pm - 11:00 pmSEA-OSL
19h 10m1 stop
$451British Airways
Find Deal
Fri, Dec 26 - Sat, Jan 10
British Airways Logo
3:05 pm - 7:29 pmOSL-SEA
36h 24m2 stops
British Airways Logo
1:35 pm - 11:00 pmSEA-OSL
24h 25m1 stop
$459British Airways
Find Deal
Sun, Oct 26 - Sat, Nov 8
American Airlines Logo
11:15 am - 11:35 amOSL-SEA
33h 20m1 stop
American Airlines Logo
1:10 pm - 11:30 pmSEA-OSL
25h 20m2 stops
$464American Airlines
Find Deal
Tue, Oct 7 - Wed, Oct 15
Delta Logo
11:50 am - 4:05 pmOSL-SEA
13h 15m1 stop
Delta Logo
8:25 pm - 8:40 pmSEA-OSL
15h 15m1 stop
$467Delta
Find Deal
Thu, Oct 2 - Wed, Oct 15
Delta Logo
11:50 am - 11:50 amOSL-SEA
33h 00m1 stop
Delta Logo
8:25 pm - 8:40 pmSEA-OSL
15h 15m1 stop
$468Delta
Find Deal
Wed, Oct 1 - Wed, Oct 15
American Airlines Logo
7:45 am - 7:09 pmOSL-SEA
20h 24m2 stops
American Airlines Logo
2:52 pm - 11:40 pmSEA-OSL
23h 48m2 stops
$469American Airlines
Find Deal
Thu, Oct 2 - Sun, Oct 12

Icelandair flights from Oslo Gardermoen Airport to Seattle

Our best Icelandair deals on Oslo Gardermoen Airport to Seattle flight tickets
Icelandair
Mar 5
OSL1:10 pmOslo Gardermoen
12h 50m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Mar 14
SEA3:35 pmSeattle/Tacoma Intl
21h 00m
1 stop
OSL8:35 pmOslo Gardermoen
$402
Find similar
Icelandair
Oct 6
OSL4:45 pmOslo Gardermoen
12h 55m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Oct 19
SEA7:00 pmSeattle/Tacoma Intl
32h 35m
1 stop
OSL12:35 pmOslo Gardermoen
$404
Find similar
Icelandair
Sep 24
OSL4:30 pmOslo Gardermoen
13h 10m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Sep 27
SEA3:45 pmSeattle/Tacoma Intl
11h 50m
1 stop
OSL12:35 pmOslo Gardermoen
$418
Find similar

Lufthansa flights from Oslo Gardermoen Airport to Seattle

Our best Lufthansa deals on Oslo Gardermoen Airport to Seattle flight tickets
Lufthansa
Oct 4
OSL6:35 amOslo Gardermoen
14h 20m
1 stop
SEA11:55 amSeattle/Tacoma Intl
Oct 15
SEA2:20 pmSeattle/Tacoma Intl
12h 55m
1 stop
OSL12:15 pmOslo Gardermoen
$448
Find similar
Lufthansa
Oct 4
OSL6:35 amOslo Gardermoen
23h 09m
2 stops
SEA8:44 pmSeattle/Tacoma Intl
Oct 15
SEA2:20 pmSeattle/Tacoma Intl
16h 20m
1 stop
OSL3:40 pmOslo Gardermoen
$449
Find similar
Lufthansa
Oct 3
OSL6:35 amOslo Gardermoen
14h 20m
1 stop
SEA11:55 amSeattle/Tacoma Intl
Oct 10
SEA2:20 pmSeattle/Tacoma Intl
18h 40m
1 stop
OSL6:00 pmOslo Gardermoen
$502
Find similar

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 September 16, 2025.
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 3/5

1:10 pm-5:00 pm

1 stop12h 50m

Seattle/Tacoma Intl

Sat 3/14

3:35 pm-8:35 pm

1 stop21h 00m

$402

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 10/6

4:45 pm-8:40 pm

1 stop12h 55m

Seattle/Tacoma Intl

Sun 10/19

7:00 pm-12:35 pm

1 stop32h 35m

$404

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sat 10/4

6:35 am-11:55 am

1 stop14h 20m

Seattle/Tacoma Intl

Wed 10/15

2:20 pm-12:15 pm

1 stop12h 55m

$448

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sat 10/4

6:35 am-8:44 pm

2 stops23h 09m

Seattle/Tacoma Intl

Wed 10/15

2:20 pm-3:40 pm

1 stop16h 20m

$449

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 12/26

7:10 am-4:55 pm

1 stop18h 45m

Seattle/Tacoma Intl

Sat 1/10

6:50 pm-11:00 pm

1 stop19h 10m

$451

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 10/26

3:05 pm-7:29 pm

2 stops36h 24m

Seattle/Tacoma Intl

Sat 11/8

1:35 pm-11:00 pm

1 stop24h 25m

$459

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Tue 10/7

11:15 am-11:35 am

1 stop33h 20m

Seattle/Tacoma Intl

Wed 10/15

1:10 pm-11:30 pm

2 stops25h 20m

$464

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 10/2

11:50 am-4:05 pm

1 stop13h 15m

Seattle/Tacoma Intl

Wed 10/15

8:25 pm-8:40 pm

1 stop15h 15m

$467

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 10/1

11:50 am-11:50 am

1 stop33h 00m

Seattle/Tacoma Intl

Wed 10/15

8:25 pm-8:40 pm

1 stop15h 15m

$468

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 10/2

7:45 am-7:09 pm

2 stops20h 24m

Seattle/Tacoma Intl

Sun 10/12

2:52 pm-11:40 pm

2 stops23h 48m

$469

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 cheapest month to fly to Seattle?

In general, November 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 $453. If you don’t want to visit Seattle in November, then you should wait until October to fly from Oslo Gardermoen Airport, when ticket prices are also cheap, with an average price of $472.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Oslo Gardermoen Airport is on a Saturday. momondo users have found tickets for Saturday departures for as low as $536. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Oslo Gardermoen Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $769.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Oslo Gardermoen Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as $536 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $662. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $581 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 $480 on momondo.

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

You could potentially save up to 48% 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 2025, prices for Oslo Gardermoen Airport to Seattle flights are approximately 20% 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

Direct flights

None
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
IcelandairPriceFrom $399Free CancellationRating
7.0
544 reviews
Search Icelandair flights
American AirlinesPriceFrom $416Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $419Free CancellationRating
6.7
7,363 reviews
Search British Airways flights
LufthansaPriceFrom $423Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
DeltaPriceFrom $452Free CancellationRating
7.9
7,957 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $603Free CancellationRating
7.4
1,486 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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