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Cheap flights from Washington to Oslo from $237

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Oslo departing on 5/4. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
3:55 pm - 8:25 pm
SEA
-
TRF
19h 30m
1 stop
Scandinavian Airlines Logo
3:05 pm - 1:45 pm
TRF
-
SEA
31h 40m
1 stop
$588Scandinavian Airlines
Tue, Jul 28 - Mon, Aug 10
Multiple Airlines Logo
3:30 pm - 12:25 am
PDX
-
TRF
23h 55m
3 stops
Multiple Airlines Logo
6:00 am - 6:00 pm
TRF
-
PDX
21h 00m
3 stops
$682Multiple Airlines
Mon, Apr 20 - Mon, Apr 27
Multiple Airlines Logo
3:30 pm - 12:25 am
PDX
-
TRF
23h 55m
2 stops
Multiple Airlines Logo
6:00 am - 6:00 pm
TRF
-
PDX
21h 00m
2 stops
$683Multiple Airlines
Mon, Apr 20 - Mon, Apr 27
Multiple Airlines Logo
3:30 pm - 12:25 am
PDX
-
TRF
23h 55m
3 stops
Multiple Airlines Logo
6:00 am - 6:00 pm
TRF
-
PDX
21h 00m
3 stops
$691Multiple Airlines
Mon, Apr 20 - Mon, Apr 27
Scandinavian Airlines Logo
1:45 pm - 12:25 am
SEA
-
TRF
25h 40m
2 stops
Scandinavian Airlines Logo
6:00 am - 7:03 pm
TRF
-
SEA
22h 03m
2 stops
$717Scandinavian Airlines
Tue, Apr 14 - Tue, Apr 28
Scandinavian Airlines Logo
3:55 pm - 4:35 pm
SEA
-
TRF
15h 40m
1 stop
Scandinavian Airlines Logo
6:35 pm - 10:17 pm
TRF
-
SEA
36h 42m
2 stops
$721Scandinavian Airlines
Fri, Jun 26 - Sun, Jul 12
Scandinavian Airlines Logo
3:55 pm - 8:25 pm
SEA
-
TRF
19h 30m
1 stop
Scandinavian Airlines Logo
6:35 pm - 10:17 pm
TRF
-
SEA
36h 42m
2 stops
$734Scandinavian Airlines
Tue, Jun 30 - Sun, Jul 12
Scandinavian Airlines Logo
3:55 pm - 8:25 pm
SEA
-
TRF
19h 30m
1 stop
Scandinavian Airlines Logo
6:35 pm - 10:17 pm
TRF
-
SEA
36h 42m
2 stops
$741Scandinavian Airlines
Sun, Jun 28 - Sun, Jul 12
Scandinavian Airlines Logo
7:00 am - 2:30 pm
SEA
-
TRF
22h 30m
2 stops
Scandinavian Airlines Logo
6:00 am - 10:55 pm
TRF
-
SEA
25h 55m
2 stops
$747Scandinavian Airlines
Sun, Apr 26 - Wed, May 13
KLM Logo
1:43 pm - 2:30 pm
PDX
-
TRF
15h 47m
2 stops
KLM Logo
6:00 am - 8:11 pm
TRF
-
PDX
23h 11m
2 stops
$1,076KLM
Sun, May 10 - Mon, May 18

Scandinavian Airlines flights from State of Washington to Oslo Sandefjord Airport

Our best Scandinavian Airlines deals on State of Washington to Oslo Sandefjord Airport flight tickets
Scandinavian Airlines
Jul 28
SEA3:55 pmSeattle/Tacoma Intl
19h 30m
1 stop
TRF8:25 pmOslo Sandefjord
Aug 10
TRF3:05 pmOslo Sandefjord
31h 40m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$588
Scandinavian Airlines
Apr 14
SEA1:45 pmSeattle/Tacoma Intl
25h 40m
2 stops
TRF12:25 amOslo Sandefjord
Apr 29
TRF6:00 amOslo Sandefjord
26h 51m
2 stops
SEA11:51 pmSeattle/Tacoma Intl
$717
Scandinavian Airlines
Jun 26
SEA3:55 pmSeattle/Tacoma Intl
15h 40m
1 stop
TRF4:35 pmOslo Sandefjord
Jul 12
TRF6:35 pmOslo Sandefjord
36h 42m
2 stops
SEA10:17 pmSeattle/Tacoma Intl
$721

KLM flights from State of Washington to Oslo Sandefjord Airport

Our best KLM deals on State of Washington to Oslo Sandefjord Airport flight tickets
KLM
Mar 30
SEA5:35 pmSeattle/Tacoma Intl
18h 25m
2 stops
TRF9:00 pmOslo Sandefjord
Apr 6
TRF9:45 amOslo Sandefjord
15h 45m
2 stops
SEA4:30 pmSeattle/Tacoma Intl
$773
KLM
May 10
PDX1:43 pmPortland
15h 47m
2 stops
TRF2:30 pmOslo Sandefjord
May 18
TRF6:00 amOslo Sandefjord
23h 11m
2 stops
PDX8:11 pmPortland
$1,076
KLM
May 11
PDX1:05 pmPortland
16h 25m
2 stops
TRF2:30 pmOslo Sandefjord
May 18
TRF6:00 amOslo Sandefjord
23h 11m
2 stops
PDX8:11 pmPortland
$3,733

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington 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 2, 2026.
Use the filters below to find and compare flights from Washington 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 7/28

3:55 pm-8:25 pm

1 stop19h 30m

Oslo Sandefjord

Mon 8/10

3:05 pm-1:45 pm

1 stop31h 40m

$588

PortlandOslo

PDX - TRF

PDXTRF

Portland

Mon 4/20

3:30 pm-12:25 am

3 stops23h 55m

Oslo Sandefjord

Mon 4/27

6:00 am-6:00 pm

3 stops21h 00m

$682

PortlandOslo

PDX - TRF

PDXTRF

Portland

Mon 4/20

3:30 pm-12:25 am

2 stops23h 55m

Oslo Sandefjord

Mon 4/27

6:00 am-6:00 pm

2 stops21h 00m

$683

PortlandOslo

PDX - TRF

PDXTRF

Portland

Mon 4/20

3:30 pm-12:25 am

3 stops23h 55m

Oslo Sandefjord

Mon 4/27

6:00 am-6:00 pm

3 stops21h 00m

$691

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 4/14

1:45 pm-12:25 am

2 stops25h 40m

Oslo Sandefjord

Tue 4/28

6:00 am-7:03 pm

2 stops22h 03m

$717

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Fri 6/26

3:55 pm-4:35 pm

1 stop15h 40m

Oslo Sandefjord

Sun 7/12

6:35 pm-10:17 pm

2 stops36h 42m

$721

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 6/30

3:55 pm-8:25 pm

1 stop19h 30m

Oslo Sandefjord

Sun 7/12

6:35 pm-10:17 pm

2 stops36h 42m

$734

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 6/28

3:55 pm-8:25 pm

1 stop19h 30m

Oslo Sandefjord

Sun 7/12

6:35 pm-10:17 pm

2 stops36h 42m

$741

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 4/26

7:00 am-2:30 pm

2 stops22h 30m

Oslo Sandefjord

Wed 5/13

6:00 am-10:55 pm

2 stops25h 55m

$747

PortlandOslo

PDX - TRF

PDXTRF

Portland

Sun 5/10

1:43 pm-2:30 pm

2 stops15h 47m

Oslo Sandefjord

Mon 5/18

6:00 am-8:11 pm

2 stops23h 11m

$1,076

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 State of Washington 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

How long does it take to fly to Oslo Sandefjord Airport?

Flight times vary depending on what airport in State of Washington you fly out of and what airport in Oslo Sandefjord Airport you fly into. For example, flying from Seattle to Oslo Gardermoen Airport takes 11h 25m on average. On the other hand, flying from Spokane to Oslo Gardermoen Airport takes 18h on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

Cheap State of Washington to Oslo Sandefjord Airport flight deals and tips

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

Fastest flight time

13h 35m

Direct flights

None
The fastest flight from State of Washington to Oslo Sandefjord Airport takes 13h 35m
There are no direct flights from State of Washington to Oslo Sandefjord Airport. There are no popular flight routes from State of Washington to Oslo Sandefjord Airport.
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  • When did momondo last update prices for flights from Washington to Oslo Sandefjord Airport?

    Prices for flights from Washington to Oslo Sandefjord Airport are updated daily.

  • How old do you have to be to fly from Washington to Oslo Sandefjord Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington 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 Washington to Oslo?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Oslo from Washington.

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

momondo does allow users to show only those flights to Oslo from Washington which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Oslo from Washington.

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

If you are not ready to book a flight from Washington to Oslo now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Oslo and let you know when they change.

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Find better results for your trip to Oslo

Popular cities in Norway

Popular flights according to clicks in the last 7 days on momondo
Flights to Oslo Gardermoen Airportfrom $313