Cheap flights from Oslo to Washington from $273

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Oslo to Washington departing on 12/9. 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.
Icelandair Logo
1:10 pm - 5:00 pmOSL-SEA
12h 50m1 stop
Icelandair Logo
2:35 pm - 11:35 amSEA-OSL
12h 00m1 stop
$426Icelandair
Find Deal
Thu, Nov 27 - Thu, Dec 4
Icelandair Logo
1:10 pm - 5:00 pmOSL-SEA
12h 50m1 stop
Icelandair Logo
2:35 pm - 11:35 amSEA-OSL
12h 00m1 stop
$481Icelandair
Find Deal
Mon, Dec 8 - Tue, Dec 23
Delta Logo
6:30 am - 11:45 amOSL-SEA
14h 15m1 stop
Delta Logo
11:26 am - 4:20 pmSEA-OSL
19h 54m2 stops
$489Delta
Find Deal
Thu, Nov 27 - Thu, Dec 4
British Airways Logo
7:10 am - 4:55 pmOSL-SEA
18h 45m1 stop
British Airways Logo
6:50 pm - 11:00 pmSEA-OSL
19h 10m1 stop
$494British Airways
Find Deal
Fri, Dec 26 - Sat, Jan 10
Delta Logo
6:30 am - 6:23 pmOSL-SEA
20h 53m2 stops
Delta Logo
1:40 pm - 4:20 pmSEA-OSL
17h 40m1 stop
$495Delta
Find Deal
Sat, Nov 8 - Sat, Nov 29
British Airways Logo
7:20 am - 3:55 pmOSL-PDX
17h 35m1 stop
British Airways Logo
5:45 pm - 10:40 pmPDX-OSL
19h 55m1 stop
$510British Airways
Find Deal
Sun, Nov 16 - Mon, Dec 1
Lufthansa Logo
6:25 pm - 2:20 pmOSL-SEA
27h 55m1 stop
Lufthansa Logo
10:10 am - 10:10 pmSEA-OSL
27h 00m2 stops
$521Lufthansa
Find Deal
Thu, Mar 26 - Mon, Mar 30
Lufthansa Logo
6:25 pm - 2:20 pmOSL-SEA
27h 55m1 stop
Lufthansa Logo
2:20 pm - 6:00 pmSEA-OSL
18h 40m1 stop
$522Lufthansa
Find Deal
Thu, Mar 26 - Mon, Mar 30
Scandinavian Airlines Logo
2:35 pm - 10:22 pmTRF-PDX
40h 47m2 stops
Scandinavian Airlines Logo
1:00 pm - 2:05 pmPDX-TRF
40h 05m2 stops
$670Scandinavian Airlines
Find Deal
Thu, Feb 19 - Mon, Feb 23
Scandinavian Airlines Logo
2:35 pm - 10:22 pmTRF-PDX
40h 47m2 stops
Scandinavian Airlines Logo
10:00 am - 2:05 pmPDX-TRF
43h 05m2 stops
$672Scandinavian Airlines
Find Deal
Thu, Feb 19 - Mon, Feb 23

Icelandair flights from Oslo to State of Washington

Our best Icelandair deals on Oslo to State of Washington flight tickets
Icelandair
Nov 27
OSL1:10 pmOslo Gardermoen
12h 50m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Dec 4
SEA2:35 pmSeattle/Tacoma Intl
12h 00m
1 stop
OSL11:35 amOslo Gardermoen
Icelandair
Oct 19
OSL10:30 pmOslo Gardermoen
31h 10m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Oct 23
SEA7:00 pmSeattle/Tacoma Intl
11h 25m
1 stop
OSL3:25 pmOslo Gardermoen
Icelandair
Oct 19
OSL10:30 pmOslo Gardermoen
31h 10m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Oct 23
SEA7:00 pmSeattle/Tacoma Intl
11h 25m
1 stop
OSL3:25 pmOslo Gardermoen

American Airlines flights from Oslo to State of Washington

Our best American Airlines deals on Oslo to State of Washington flight tickets
American Airlines
Dec 8
OSL7:20 amOslo Gardermoen
25h 05m
2 stops
SEA11:25 pmSeattle/Tacoma Intl
Dec 23
SEA1:25 pmSeattle/Tacoma Intl
15h 45m
1 stop
OSL2:10 pmOslo Gardermoen
American Airlines
Dec 8
OSL7:20 amOslo Gardermoen
25h 05m
2 stops
SEA11:25 pmSeattle/Tacoma Intl
Dec 23
SEA5:23 amSeattle/Tacoma Intl
32h 17m
2 stops
OSL10:40 pmOslo Gardermoen
American Airlines
Dec 8
OSL7:20 amOslo Gardermoen
38h 18m
2 stops
SEA12:38 pmSeattle/Tacoma Intl
Dec 23
SEA11:49 amSeattle/Tacoma Intl
25h 51m
2 stops
OSL10:40 pmOslo Gardermoen

momondo Fare Finder

 
Customize your flight search to find flights from Oslo to State of Washington 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 14, 2025.
Use the filters below to find and compare flights from Oslo to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 11/27

1:10 pm-5:00 pm

1 stop12h 50m

Seattle/Tacoma Intl

Thu 12/4

2:35 pm-11:35 am

1 stop12h 00m

$426

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 12/8

1:10 pm-5:00 pm

1 stop12h 50m

Seattle/Tacoma Intl

Tue 12/23

2:35 pm-11:35 am

1 stop12h 00m

$481

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 11/27

6:30 am-11:45 am

1 stop14h 15m

Seattle/Tacoma Intl

Thu 12/4

11:26 am-4:20 pm

2 stops19h 54m

$489

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 12/26

7:10 am-4:55 pm

1 stop18h 45m

Seattle/Tacoma Intl

Sat 1/10

6:50 pm-11:00 pm

1 stop19h 10m

$494

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sat 11/8

6:30 am-6:23 pm

2 stops20h 53m

Seattle/Tacoma Intl

Sat 11/29

1:40 pm-4:20 pm

1 stop17h 40m

$495

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Sun 11/16

7:20 am-3:55 pm

1 stop17h 35m

Portland

Mon 12/1

5:45 pm-10:40 pm

1 stop19h 55m

$510

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 3/26

6:25 pm-2:20 pm

1 stop27h 55m

Seattle/Tacoma Intl

Mon 3/30

10:10 am-10:10 pm

2 stops27h 00m

$521

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 3/26

6:25 pm-2:20 pm

1 stop27h 55m

Seattle/Tacoma Intl

Mon 3/30

2:20 pm-6:00 pm

1 stop18h 40m

$522

OsloPortland

TRF - PDX

TRFPDX

Oslo Sandefjord

Thu 2/19

2:35 pm-10:22 pm

2 stops40h 47m

Portland

Mon 2/23

1:00 pm-2:05 pm

2 stops40h 05m

$670

OsloPortland

TRF - PDX

TRFPDX

Oslo Sandefjord

Thu 2/19

2:35 pm-10:22 pm

2 stops40h 47m

Portland

Mon 2/23

10:00 am-2:05 pm

2 stops43h 05m

$672

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 Washington from

How to get the cheapest flight ticket from Oslo to State of Washington

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 month to fly to State of Washington?

The month of November is, on average, the cheapest month to fly to State of Washington from Oslo, with most prices found around $460. If you aren’t able to travel to State of Washington during the month of November, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $477.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Oslo to State of Washington is on a Saturday. Travelers who choose to depart for State of Washington on a Saturday will often find tickets for as low as $536. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Oslo to State of Washington for around $769.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is at noon when flights can be purchased for as low as $536. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $662 on average. Flights to State of Washington from Oslo in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Oslo when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $576 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Oslo for as low as $480 on momondo.

Cheap Oslo to State of Washington flight deals and tips

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

Direct flights

None
There are no direct flights from Oslo to State of Washington. There are no popular flight routes from Oslo to State of Washington.
  • When did momondo last update prices for flights from Oslo to Washington?

    Prices for flights from Oslo to Washington were last updated today.

  • How many operators does momondo search for flights from Oslo to Washington?

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

    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 Oslo to Washington.

  • What documentation or ID do you need to fly to Washington?

    The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Oslo to State of Washington

Compare and see reviews for airlines that fly from Oslo to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $362Free CancellationRating
6.7
7,456 reviews
Search British Airways flights
IcelandairPriceFrom $399Free CancellationRating
7.0
556 reviews
Search Icelandair flights
American AirlinesPriceFrom $416Free CancellationRating
7.2
11,042 reviews
Search American Airlines flights
LufthansaPriceFrom $423Free CancellationRating
6.8
7,489 reviews
Search Lufthansa flights
DeltaPriceFrom $452Free CancellationRating
7.9
7,975 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $603Free CancellationRating
7.4
1,532 reviews
Search Scandinavian Airlines flights

Why use momondo?

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

It is quick and easy to find Oslo to Washington flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington that suits you.

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

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

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

Once all potential Oslo to Washington flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Washington from Oslo. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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1 adult
Thu 11/13
Thu 11/20

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