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Cheap flights from Seattle to Oslo from $291

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 9/20. 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 Seattle to Oslo

Cheap round-trip flights

Logo
4:20 pm - 6:50 pmSEA-TRF
17h 30m2 stops
Logo
12:15 pm - 2:00 pmTRF-SEA
34h 45m3 stops
$687
Find Deal
dom., oct. 5 - sáb., oct. 11
Logo
4:20 pm - 9:10 pmSEA-TRF
19h 50m3 stops
Logo
12:15 pm - 2:00 pmTRF-SEA
34h 45m3 stops
$708
Find Deal
dom., oct. 5 - sáb., oct. 11
Logo
2:20 pm - 7:55 pmSEA-TRF
20h 35m2 stops
Logo
9:50 pm - 11:55 amTRF-SEA
23h 05m2 stops
$839
Find Deal
mar., sep. 16 - mar., sep. 23
KLM Logo
5:40 pm - 3:05 pmSEA-TRF
36h 25m2 stops
KLM Logo
9:00 am - 5:40 pmTRF-SEA
17h 40m2 stops
$852KLM
Find Deal
jue., oct. 9 - mié., oct. 22
Logo
7:00 pm - 12:50 pmSEA-TRF
32h 50m3 stops
Logo
9:25 pm - 8:40 pmTRF-SEA
32h 15m3 stops
$929
Find Deal
lun., sep. 22 - dom., sep. 28
Scandinavian Airlines Logo
4:20 pm - 2:20 pmSEA-TRF
13h 00m1 stop
Scandinavian Airlines Logo
2:55 pm - 7:50 pmTRF-SEA
37h 55m2 stops
$1,035Scandinavian Airlines
Find Deal
mié., oct. 1 - mié., oct. 8
KLM Logo
5:40 pm - 9:05 pmSEA-TRF
18h 25m2 stops
KLM Logo
4:45 pm - 11:45 amTRF-SEA
28h 00m2 stops
$1,127KLM
Find Deal
jue., sep. 18 - jue., sep. 25
Scandinavian Airlines Logo
9:45 pm - 2:20 pmSEA-TRF
31h 35m2 stops
Scandinavian Airlines Logo
2:55 pm - 11:54 pmTRF-SEA
41h 59m2 stops
$1,136Scandinavian Airlines
Find Deal
dom., sep. 7 - dom., sep. 14
Lufthansa Logo
2:20 pm - 3:05 pmSEA-TRF
15h 45m2 stops
Lufthansa Logo
9:00 am - 4:59 pmTRF-SEA
16h 59m2 stops
$1,450Lufthansa
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jue., oct. 9 - mié., oct. 22
Lufthansa Logo
2:20 pm - 3:05 pmSEA-TRF
15h 45m2 stops
Lufthansa Logo
9:00 am - 4:59 pmTRF-SEA
16h 59m2 stops
$1,497Lufthansa
Find Deal
mié., sep. 3 - mié., sep. 10

Scandinavian Airlines flights from Seattle to Oslo Sandefjord Airport

Our best Scandinavian Airlines deals on Seattle to Oslo Sandefjord Airport flight tickets
Scandinavian Airlines
Aug 24
SEA4:00 pmSeattle/Tacoma Intl
13h 20m
1 stop
TRF2:20 pmOslo Sandefjord
Sep 25
TRF2:55 pmOslo Sandefjord
32h 05m
1 stop
SEA2:00 pmSeattle/Tacoma Intl
$865
Find similar
Scandinavian Airlines
Aug 24
SEA4:00 pmSeattle/Tacoma Intl
13h 20m
1 stop
TRF2:20 pmOslo Sandefjord
Sep 23
TRF2:55 pmOslo Sandefjord
32h 05m
1 stop
SEA2:00 pmSeattle/Tacoma Intl
$880
Find similar
Scandinavian Airlines
Aug 23
SEA4:00 pmSeattle/Tacoma Intl
13h 20m
1 stop
TRF2:20 pmOslo Sandefjord
Sep 25
TRF2:55 pmOslo Sandefjord
32h 05m
1 stop
SEA2:00 pmSeattle/Tacoma Intl
$915
Find similar

Lufthansa flights from Seattle to Oslo Sandefjord Airport

Our best Lufthansa deals on Seattle to Oslo Sandefjord Airport flight tickets
Lufthansa
Oct 9
SEA2:20 pmSeattle/Tacoma Intl
15h 45m
2 stops
TRF3:05 pmOslo Sandefjord
Oct 22
TRF9:00 amOslo Sandefjord
16h 59m
2 stops
SEA4:59 pmSeattle/Tacoma Intl
$1,450
Find similar
Lufthansa
Sep 3
SEA2:20 pmSeattle/Tacoma Intl
15h 45m
2 stops
TRF3:05 pmOslo Sandefjord
Sep 10
TRF9:00 amOslo Sandefjord
16h 59m
2 stops
SEA4:59 pmSeattle/Tacoma Intl
$1,497
Find similar
Lufthansa
Sep 3
SEA2:20 pmSeattle/Tacoma Intl
15h 45m
2 stops
TRF3:05 pmOslo Sandefjord
Sep 17
TRF9:00 amOslo Sandefjord
16h 59m
2 stops
SEA4:59 pmSeattle/Tacoma Intl
$2,261
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 agosto 21, 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

dom. 10/5

4:20 pm-6:50 pm

2 stops17h 30m

Oslo Sandefjord

sáb. 10/11

12:15 pm-2:00 pm

3 stops34h 45m

$687

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

dom. 10/5

4:20 pm-9:10 pm

3 stops19h 50m

Oslo Sandefjord

sáb. 10/11

12:15 pm-2:00 pm

3 stops34h 45m

$708

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

mar. 9/16

2:20 pm-7:55 pm

2 stops20h 35m

Oslo Sandefjord

mar. 9/23

9:50 pm-11:55 am

2 stops23h 05m

$839

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

jue. 10/9

5:40 pm-3:05 pm

2 stops36h 25m

Oslo Sandefjord

mié. 10/22

9:00 am-5:40 pm

2 stops17h 40m

$852

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

lun. 9/22

7:00 pm-12:50 pm

3 stops32h 50m

Oslo Sandefjord

dom. 9/28

9:25 pm-8:40 pm

3 stops32h 15m

$929

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

mié. 10/1

4:20 pm-2:20 pm

1 stop13h 00m

Oslo Sandefjord

mié. 10/8

2:55 pm-7:50 pm

2 stops37h 55m

$1,035

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

jue. 9/18

5:40 pm-9:05 pm

2 stops18h 25m

Oslo Sandefjord

jue. 9/25

4:45 pm-11:45 am

2 stops28h 00m

$1,127

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

dom. 9/7

9:45 pm-2:20 pm

2 stops31h 35m

Oslo Sandefjord

dom. 9/14

2:55 pm-11:54 pm

2 stops41h 59m

$1,136

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

jue. 10/9

2:20 pm-3:05 pm

2 stops15h 45m

Oslo Sandefjord

mié. 10/22

9:00 am-4:59 pm

2 stops16h 59m

$1,450

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

mié. 9/3

2:20 pm-3:05 pm

2 stops15h 45m

Oslo Sandefjord

mié. 9/10

9:00 am-4:59 pm

2 stops16h 59m

$1,497

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 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 13h 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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