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Cheap flights from Seattle to Oslo from $305

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 1/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
9:50 am - 2:30 pmSEA-TRF
19h 40m2 stops
Scandinavian Airlines Logo
6:00 am - 1:45 pmTRF-SEA
16h 45m1 stop
$499Scandinavian Airlines
Find Deal
Tue, May 12 - Tue, Jun 2
Lufthansa Logo
2:10 pm - 3:05 pmSEA-TRF
39h 55m2 stops
Lufthansa Logo
9:00 am - 12:20 pmTRF-SEA
36h 20m2 stops
$538Lufthansa
Find Deal
Sun, Apr 12 - Sun, Apr 19
Scandinavian Airlines Logo
9:50 am - 2:30 pmSEA-TRF
19h 40m2 stops
Scandinavian Airlines Logo
3:05 pm - 1:45 pmTRF-SEA
31h 40m1 stop
$635Scandinavian Airlines
Find Deal
Sun, May 10 - Fri, May 29
Scandinavian Airlines Logo
9:50 am - 2:30 pmSEA-TRF
19h 40m2 stops
Scandinavian Airlines Logo
6:00 am - 1:45 pmTRF-SEA
16h 45m1 stop
$675Scandinavian Airlines
Find Deal
Sun, May 10 - Fri, May 29
Scandinavian Airlines Logo
9:50 am - 2:30 pmSEA-TRF
19h 40m2 stops
Scandinavian Airlines Logo
3:05 pm - 1:45 pmTRF-SEA
31h 40m1 stop
$676Scandinavian Airlines
Find Deal
Sun, May 10 - Fri, May 29
Multiple Airlines Logo
7:00 pm - 6:00 pmSEA-TRF
14h 00m2 stops
Multiple Airlines Logo
12:10 pm - 6:00 pmTRF-SEA
14h 50m2 stops
$767Multiple Airlines
Find Deal
Sat, Apr 25 - Wed, May 20
Multiple Airlines Logo
7:00 pm - 6:35 pmSEA-TRF
14h 35m2 stops
Multiple Airlines Logo
12:10 pm - 6:00 pmTRF-SEA
14h 50m2 stops
$773Multiple Airlines
Find Deal
Fri, May 8 - Fri, May 22
Multiple Airlines Logo
7:00 pm - 6:35 pmSEA-TRF
14h 35m2 stops
Multiple Airlines Logo
12:10 pm - 6:00 pmTRF-SEA
14h 50m2 stops
$774Multiple Airlines
Find Deal
Fri, May 8 - Fri, May 22
Multiple Airlines Logo
7:00 pm - 6:35 pmSEA-TRF
14h 35m2 stops
Multiple Airlines Logo
12:10 pm - 6:00 pmTRF-SEA
14h 50m2 stops
$823Multiple Airlines
Find Deal
Fri, May 15 - Mon, May 25
Multiple Airlines Logo
7:00 pm - 6:35 pmSEA-TRF
14h 35m2 stops
Multiple Airlines Logo
12:10 pm - 6:00 pmTRF-SEA
14h 50m2 stops
$824Multiple Airlines
Find Deal
Fri, May 15 - Mon, May 25

Lufthansa flights from Seattle to Oslo Sandefjord Airport

Our best Lufthansa deals on Seattle to Oslo Sandefjord Airport flight tickets
Lufthansa
Apr 12
SEA2:10 pmSeattle/Tacoma Intl
39h 55m
2 stops
TRF3:05 pmOslo Sandefjord
Apr 19
TRF9:00 amOslo Sandefjord
36h 20m
2 stops
SEA12:20 pmSeattle/Tacoma Intl
$538
Find similar
Lufthansa
Apr 13
SEA2:10 pmSeattle/Tacoma Intl
15h 55m
2 stops
TRF3:05 pmOslo Sandefjord
Apr 22
TRF9:00 amOslo Sandefjord
16h 59m
2 stops
SEA4:59 pmSeattle/Tacoma Intl
$978
Find similar

Air France flights from Seattle to Oslo Sandefjord Airport

Our best Air France deals on Seattle to Oslo Sandefjord Airport flight tickets
Air France
Feb 23
SEA2:15 pmSeattle/Tacoma Intl
38h 50m
2 stops
TRF2:05 pmOslo Sandefjord
Feb 27
TRF2:35 pmOslo Sandefjord
55h 30m
2 stops
SEA1:05 pmSeattle/Tacoma Intl
$894
Find similar
Air France
Feb 23
SEA2:15 pmSeattle/Tacoma Intl
38h 50m
2 stops
TRF2:05 pmOslo Sandefjord
Feb 27
TRF2:35 pmOslo Sandefjord
55h 30m
2 stops
SEA1:05 pmSeattle/Tacoma Intl
$895
Find similar

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 November 26, 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

Tue 5/12

9:50 am-2:30 pm

2 stops19h 40m

Oslo Sandefjord

Tue 6/2

6:00 am-1:45 pm

1 stop16h 45m

$499

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 4/12

2:10 pm-3:05 pm

2 stops39h 55m

Oslo Sandefjord

Sun 4/19

9:00 am-12:20 pm

2 stops36h 20m

$538

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 5/10

9:50 am-2:30 pm

2 stops19h 40m

Oslo Sandefjord

Fri 5/29

3:05 pm-1:45 pm

1 stop31h 40m

$635

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 5/10

9:50 am-2:30 pm

2 stops19h 40m

Oslo Sandefjord

Fri 5/29

6:00 am-1:45 pm

1 stop16h 45m

$675

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 5/10

9:50 am-2:30 pm

2 stops19h 40m

Oslo Sandefjord

Fri 5/29

3:05 pm-1:45 pm

1 stop31h 40m

$676

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sat 4/25

7:00 pm-6:00 pm

2 stops14h 00m

Oslo Sandefjord

Wed 5/20

12:10 pm-6:00 pm

2 stops14h 50m

$767

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Fri 5/8

7:00 pm-6:35 pm

2 stops14h 35m

Oslo Sandefjord

Fri 5/22

12:10 pm-6:00 pm

2 stops14h 50m

$773

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Fri 5/8

7:00 pm-6:35 pm

2 stops14h 35m

Oslo Sandefjord

Fri 5/22

12:10 pm-6:00 pm

2 stops14h 50m

$774

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Fri 5/15

7:00 pm-6:35 pm

2 stops14h 35m

Oslo Sandefjord

Mon 5/25

12:10 pm-6:00 pm

2 stops14h 50m

$823

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Fri 5/15

7:00 pm-6:35 pm

2 stops14h 35m

Oslo Sandefjord

Mon 5/25

12:10 pm-6:00 pm

2 stops14h 50m

$824

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

Fastest flight time

14h 00m

Direct flights

None
The fastest flight from Seattle to Oslo Sandefjord Airport takes 14h 00m
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.

  • How do I get Price Alerts for flights from Seattle to Oslo Sandefjord Airport?

    Price Alerts will notify you by email when the price for flights to Oslo Sandefjord Airport from Seattle decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Seattle to Oslo Sandefjord Airport with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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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