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Cheap flights from Seattle to Oslo from $342

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Oslo departing on 11/9. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
7:20 am - 2:30 pmSEA-TRF
22h 10m2 stops
Scandinavian Airlines Logo
3:05 pm - 8:43 pmTRF-SEA
38h 38m2 stops
$1,116Scandinavian Airlines
Find Deal
Sat, Apr 4 - Sun, Apr 12
Multiple Airlines Logo
8:05 pm - 7:45 pmSEA-TRF
14h 40m2 stops
Multiple Airlines Logo
8:50 pm - 6:20 pmTRF-SEA
30h 30m2 stops
$1,451Multiple Airlines
Find Deal
Sun, Nov 9 - Sat, Nov 15
Multiple Airlines Logo
8:05 pm - 2:05 pmSEA-TRF
33h 00m3 stops
Multiple Airlines Logo
2:35 pm - 5:05 pmTRF-SEA
35h 30m3 stops
$2,077Multiple Airlines
Find Deal
Sun, Nov 9 - Fri, Nov 14
Multiple Airlines Logo
8:05 pm - 8:25 pmSEA-TRF
15h 20m2 stops
Multiple Airlines Logo
8:50 pm - 6:20 pmTRF-SEA
30h 30m2 stops
$2,177Multiple Airlines
Find Deal
Fri, Dec 19 - Sat, Jan 3
Multiple Airlines Logo
8:05 pm - 8:25 pmSEA-TRF
15h 20m2 stops
Multiple Airlines Logo
4:20 pm - 6:20 pmTRF-SEA
35h 00m3 stops
$2,508Multiple Airlines
Find Deal
Fri, Dec 19 - Sat, Jan 3
Multiple Airlines Logo
7:00 pm - 6:00 pmSEA-TRF
14h 00m2 stops
Multiple Airlines Logo
12:10 pm - 5:50 pmTRF-SEA
14h 40m2 stops
$2,563Multiple Airlines
Find Deal
Wed, Apr 22 - Thu, Apr 30
Multiple Airlines Logo
2:00 pm - 6:40 pmSEA-TRF
19h 40m2 stops
Multiple Airlines Logo
8:50 pm - 6:20 pmTRF-SEA
30h 30m2 stops
$2,912Multiple Airlines
Find Deal
Sat, Dec 20 - Sat, Jan 3
Multiple Airlines Logo
2:00 pm - 6:40 pmSEA-TRF
19h 40m2 stops
Multiple Airlines Logo
4:20 pm - 6:20 pmTRF-SEA
35h 00m3 stops
$3,112Multiple Airlines
Find Deal
Sat, Dec 20 - Sat, Jan 3

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Oslo Sandefjord Airport 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 October 30, 2025.
Use the filters below to find and compare flights from Seattle to Oslo Sandefjord Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sat 4/4

7:20 am-2:30 pm

2 stops22h 10m

Oslo Sandefjord

Sun 4/12

3:05 pm-8:43 pm

2 stops38h 38m

$1,116

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 11/9

8:05 pm-7:45 pm

2 stops14h 40m

Oslo Sandefjord

Sat 11/15

8:50 pm-6:20 pm

2 stops30h 30m

$1,451

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 11/9

8:05 pm-2:05 pm

3 stops33h 00m

Oslo Sandefjord

Fri 11/14

2:35 pm-5:05 pm

3 stops35h 30m

$2,077

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Fri 12/19

8:05 pm-8:25 pm

2 stops15h 20m

Oslo Sandefjord

Sat 1/3

8:50 pm-6:20 pm

2 stops30h 30m

$2,177

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Fri 12/19

8:05 pm-8:25 pm

2 stops15h 20m

Oslo Sandefjord

Sat 1/3

4:20 pm-6:20 pm

3 stops35h 00m

$2,508

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Wed 4/22

7:00 pm-6:00 pm

2 stops14h 00m

Oslo Sandefjord

Thu 4/30

12:10 pm-5:50 pm

2 stops14h 40m

$2,563

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sat 12/20

2:00 pm-6:40 pm

2 stops19h 40m

Oslo Sandefjord

Sat 1/3

8:50 pm-6:20 pm

2 stops30h 30m

$2,912

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sat 12/20

2:00 pm-6:40 pm

2 stops19h 40m

Oslo Sandefjord

Sat 1/3

4:20 pm-6:20 pm

3 stops35h 00m

$3,112

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 11/9

3:10 pm-10:50 am

3 stops58h 40m

$342

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sat 11/15

3:59 pm-11:55 am

3 stops34h 56m

$418

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Oslo from

How to get the cheapest flight ticket from Seattle to Oslo Sandefjord Airport

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 airline that flies from Seattle/Tacoma Intl to Oslo Sandefjord?

Lufthansa and Scandinavian Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Oslo Sandefjord

When to book flights from Seattle to Oslo Sandefjord Airport

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

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

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

Direct flights

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

    Seattle/Tacoma Intl and Oslo Sandefjord are 4583.4 mi apart from one another. A reasonable flight in good conditions will take 14h 00m.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Oslo Sandefjord Airport were last updated today.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Oslo Sandefjord 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 Seattle/Tacoma Intl Airport to Oslo Sandefjord Airport.

  • What documentation or ID do you need to fly to Oslo Sandefjord Airport?

    The required travel and health documents for your Oslo Sandefjord Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Oslo Sandefjord Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Oslo?

Book flights to Oslo if you plan to visit one of these locations
Sandefjord

Why use momondo?

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

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

Can I find flights from Seattle to Oslo with flexible booking policies on momondo?

All flight searches from Seattle to Oslo on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Oslo?

momondo helps you find the best flight between Seattle and Oslo by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Oslo right now. Can momondo alert me if prices change?

Price alerts on flights to Oslo from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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1 adult
Sat 11/29
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