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Cheap flights from Seattle to Oslo from $235

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 4/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Oslo

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 pm - 12:25 am
SEA
-
TRF
20h 25m
2 stops
Multiple Airlines Logo
6:00 am - 5:55 pm
TRF
-
SEA
20h 55m
2 stops
$631Multiple Airlines
Thu, Apr 16 - Wed, Apr 29
Multiple Airlines Logo
7:00 pm - 12:25 am
SEA
-
TRF
20h 25m
2 stops
Multiple Airlines Logo
6:00 am - 4:00 pm
TRF
-
SEA
19h 00m
2 stops
$715Multiple Airlines
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
11:25 pm - 12:25 am
SEA
-
TRF
16h 00m
2 stops
Multiple Airlines Logo
12:10 pm - 5:55 pm
TRF
-
SEA
14h 45m
2 stops
$763Multiple Airlines
Wed, May 20 - Wed, May 27
KLM Logo
5:35 pm - 9:00 pm
SEA
-
TRF
18h 25m
2 stops
KLM Logo
9:45 am - 4:30 pm
TRF
-
SEA
15h 45m
2 stops
$773KLM
Mon, Mar 30 - Mon, Apr 6
Multiple Airlines Logo
8:00 am - 2:30 pm
SEA
-
TRF
21h 30m
2 stops
Multiple Airlines Logo
6:00 am - 10:53 pm
TRF
-
SEA
25h 53m
3 stops
$783Multiple Airlines
Tue, Mar 31 - Tue, Apr 7
Multiple Airlines Logo
7:00 pm - 6:00 pm
SEA
-
TRF
14h 00m
2 stops
Multiple Airlines Logo
12:10 pm - 5:55 pm
TRF
-
SEA
14h 45m
2 stops
$825Multiple Airlines
Thu, Apr 23 - Tue, May 5
Multiple Airlines Logo
7:00 pm - 9:10 pm
SEA
-
TRF
17h 10m
2 stops
Multiple Airlines Logo
9:05 am - 5:55 pm
TRF
-
SEA
17h 50m
2 stops
$884Multiple Airlines
Sun, Apr 12 - Sat, Apr 25
Multiple Airlines Logo
8:00 am - 7:55 pm
SEA
-
TRF
26h 55m
3 stops
Multiple Airlines Logo
9:05 pm - 12:20 pm
TRF
-
SEA
24h 15m
2 stops
$1,056Multiple Airlines
Wed, Apr 1 - Tue, Apr 14
Multiple Airlines Logo
8:00 am - 7:55 pm
SEA
-
TRF
26h 55m
3 stops
Multiple Airlines Logo
9:05 pm - 7:20 pm
TRF
-
SEA
31h 15m
3 stops
$1,058Multiple Airlines
Wed, Apr 1 - Tue, Apr 14
Scandinavian Airlines Logo
11:45 am - 2:30 pm
SEA
-
TRF
17h 45m
2 stops
Scandinavian Airlines Logo
6:00 am - 8:43 pm
TRF
-
SEA
23h 43m
2 stops
$1,086Scandinavian Airlines
Mon, Apr 20 - Mon, Apr 27

Scandinavian Airlines flights from Seattle to Oslo Sandefjord Airport

Our best Scandinavian Airlines deals on Seattle to Oslo Sandefjord Airport flight tickets
Scandinavian Airlines
Apr 20
SEA11:45 amSeattle/Tacoma Intl
17h 45m
2 stops
TRF2:30 pmOslo Sandefjord
Apr 27
TRF6:00 amOslo Sandefjord
23h 43m
2 stops
SEA8:43 pmSeattle/Tacoma Intl
$1,086
Scandinavian Airlines
Mar 29
SEA11:45 amSeattle/Tacoma Intl
17h 45m
2 stops
TRF2:30 pmOslo Sandefjord
Apr 7
TRF6:00 amOslo Sandefjord
22h 05m
2 stops
SEA7:05 pmSeattle/Tacoma Intl
$1,125
Scandinavian Airlines
Mar 22
SEA7:15 amSeattle/Tacoma Intl
22h 50m
2 stops
TRF2:05 pmOslo Sandefjord
Mar 29
TRF3:05 pmOslo Sandefjord
40h 05m
2 stops
SEA10:10 pmSeattle/Tacoma Intl
$1,414

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 March 6, 2026.
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

Cheapest round-trip

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Thu 4/16

7:00 pm-12:25 am

2 stops20h 25m

Oslo Sandefjord

Wed 4/29

6:00 am-5:55 pm

2 stops20h 55m

$631

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 5/5

7:00 pm-12:25 am

2 stops20h 25m

Oslo Sandefjord

Tue 5/12

6:00 am-4:00 pm

2 stops19h 00m

$715

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Wed 5/20

11:25 pm-12:25 am

2 stops16h 00m

Oslo Sandefjord

Wed 5/27

12:10 pm-5:55 pm

2 stops14h 45m

$763

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Mon 3/30

5:35 pm-9:00 pm

2 stops18h 25m

Oslo Sandefjord

Mon 4/6

9:45 am-4:30 pm

2 stops15h 45m

$773

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 3/31

8:00 am-2:30 pm

2 stops21h 30m

Oslo Sandefjord

Tue 4/7

6:00 am-10:53 pm

3 stops25h 53m

$783
Quickest round-trip

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Thu 4/23

7:00 pm-6:00 pm

2 stops14h 00m

Oslo Sandefjord

Tue 5/5

12:10 pm-5:55 pm

2 stops14h 45m

$825

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 4/12

7:00 pm-9:10 pm

2 stops17h 10m

Oslo Sandefjord

Sat 4/25

9:05 am-5:55 pm

2 stops17h 50m

$884

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Wed 4/1

8:00 am-7:55 pm

3 stops26h 55m

Oslo Sandefjord

Tue 4/14

9:05 pm-12:20 pm

2 stops24h 15m

$1,056

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Wed 4/1

8:00 am-7:55 pm

3 stops26h 55m

Oslo Sandefjord

Tue 4/14

9:05 pm-7:20 pm

3 stops31h 15m

$1,058

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Mon 4/20

11:45 am-2:30 pm

2 stops17h 45m

Oslo Sandefjord

Mon 4/27

6:00 am-8:43 pm

2 stops23h 43m

$1,086

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

13h 35m

Direct flights

None
The fastest flight from Seattle to Oslo Sandefjord Airport takes 13h 35m
There are no direct flights from Seattle to Oslo Sandefjord Airport. There are no popular flight routes from Seattle to Oslo Sandefjord Airport.
Search flight deals

  • 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 13h 35m.

  • 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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