Cheap flights from Oslo Sandefjord Airport to Seattle from $440

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 Sandefjord Airport to Seattle departing on 9/25. 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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Find the cheapest flights from Oslo Sandefjord Airport to Seattle

Cheap round-trip flights

 Logo
9:00 am - 5:50 pmTRF-SEA
17h 50m2 stops
 Logo
7:35 pm - 2:20 pmSEA-TRF
33h 45m2 stops
$1,114
Find Deal
Thu, Oct 2 - Wed, Oct 15
 Logo
2:55 pm - 11:55 amTRF-SEA
30h 00m3 stops
 Logo
6:50 pm - 12:50 pmSEA-TRF
33h 00m3 stops
$1,159
Find Deal
Fri, Oct 10 - Fri, Oct 24
 Logo
2:55 pm - 11:55 amTRF-SEA
30h 00m3 stops
 Logo
6:50 pm - 3:05 pmSEA-TRF
35h 15m2 stops
$1,314
Find Deal
Fri, Oct 10 - Fri, Oct 24
Lufthansa Logo
3:30 pm - 11:55 amTRF-SEA
29h 25m2 stops
Lufthansa Logo
2:00 pm - 3:55 pmSEA-TRF
40h 55m2 stops
$1,352Lufthansa
Find Deal
Mon, Sep 8 - Thu, Dec 18
Scandinavian Airlines Logo
2:55 pm - 2:00 pmTRF-SEA
32h 05m1 stop
Scandinavian Airlines Logo
4:20 pm - 2:20 pmSEA-TRF
13h 00m1 stop
$3,378Scandinavian Airlines
Find Deal
Thu, Sep 11 - Wed, Sep 24

momondo Fare Finder

 
Customize your flight search to find flights from Oslo Sandefjord 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 August 20, 2025.
Use the filters below to find and compare flights from Oslo Sandefjord Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Thu 10/2

9:00 am-5:50 pm

2 stops17h 50m

Seattle/Tacoma Intl

Wed 10/15

7:35 pm-2:20 pm

2 stops33h 45m

$1,114

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Fri 10/10

2:55 pm-11:55 am

3 stops30h 00m

Seattle/Tacoma Intl

Fri 10/24

6:50 pm-12:50 pm

3 stops33h 00m

$1,159

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Fri 10/10

2:55 pm-11:55 am

3 stops30h 00m

Seattle/Tacoma Intl

Fri 10/24

6:50 pm-3:05 pm

2 stops35h 15m

$1,314

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Mon 9/8

3:30 pm-11:55 am

2 stops29h 25m

Seattle/Tacoma Intl

Thu 12/18

2:00 pm-3:55 pm

2 stops40h 55m

$1,352

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Thu 9/11

2:55 pm-2:00 pm

1 stop32h 05m

Seattle/Tacoma Intl

Wed 9/24

4:20 pm-2:20 pm

1 stop13h 00m

$3,378

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Thu 9/25

8:05 am-10:27 pm

3 stops47h 22m

$440

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Thu 9/25

8:05 am-10:27 pm

3 stops47h 22m

$444

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Tue 9/9

8:45 pm-10:34 am

3 stops46h 49m

$510

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Sun 9/28

8:20 pm-10:20 am

3 stops47h 00m

$512

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Thu 9/25

2:55 pm-2:00 pm

1 stop32h 05m

$595

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Oslo Sandefjord 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 day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Oslo Sandefjord 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 Sandefjord 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 Sandefjord 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.

When to book flights from Oslo Sandefjord Airport to Seattle

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

Cheap Oslo Sandefjord Airport to Seattle (TRF to SEA) flight deals and tips

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

Direct flights

None
There are no direct flights from Oslo Sandefjord Airport to Seattle. There are no popular flight routes from Oslo Sandefjord Airport to Seattle.
  • How far is Oslo Sandefjord to Seattle/Tacoma Intl by plane?

    The distance between Oslo Sandefjord and Seattle/Tacoma Intl is about 4583.4 mi. By plane, this route typically takes 17h 50m.

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

    Prices for flights from Oslo Sandefjord Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Oslo Sandefjord 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 Sandefjord 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.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Olympia
Renton
Kent
Lynnwood
Federal Way
Marysville
Puyallup
Tukwila
Kirkland
Lakewood
Centralia
Cle Elum
Shoreline
Fife
Redmond
Westport

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?

Yes. All flights to Seattle from Oslo on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Oslo and alert you when they change.

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1 adult
Mon 8/25
Mon 9/1

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