What airlines fly to Oslo?

Icelandair, Scandinavian Airlines and Delta are the top three most popular airlines that fly to Oslo from State of Washington according to our data. Icelandair is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Oslo. Keep in mind that there are 10 different airlines that fly to Oslo on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington to Oslo?

Icelandair, United Airlines, and Lufthansa are the most popular carriers operating from Washington to Oslo

How long does it take to fly to Oslo?

Flight times vary depending on what airport in State of Washington you fly out of and what airport in Oslo 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 27h 40m 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.

When did momondo last update prices for flights from Washington to Oslo?

Prices for flights from Washington to Oslo are updated daily.

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

There are 10 operators available for flights from Washington to Oslo as of December 2025.

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

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 Washington to Oslo.

What documentation or ID do you need to fly to Oslo?

The required travel and health documents for your Oslo 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. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$319 Cheap Flights from Washington to Oslo in 2025/26

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Find the cheapest flights from Washington to Oslo

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:35 pm - 11:35 am

SEA

OSL

12h 00m1 stop

1:10 pm - 5:00 pm

OSL

SEA

12h 50m1 stop

$390Icelandair

Thu, Jan 22 - Thu, Jan 29

2:35 pm - 11:35 am

SEA

OSL

12h 00m1 stop

1:10 pm - 5:00 pm

OSL

SEA

12h 50m1 stop

$392Icelandair

Sun, Jan 11 - Mon, Jan 26

7:00 am - 3:40 pm

SEA

OSL

23h 40m2 stops

6:15 am - 12:10 pm

OSL

SEA

14h 55m1 stop

$465Lufthansa

Thu, Jan 22 - Thu, Jan 29

7:00 am - 8:40 am

PDX

OSL

16h 40m2 stops

9:50 am - 8:25 pm

OSL

PDX

19h 35m2 stops

$476KLM

Mon, Jan 12 - Sun, Jan 25

7:00 am - 8:40 am

PDX

OSL

16h 40m2 stops

6:30 am - 11:25 am

OSL

PDX

13h 55m1 stop

$478KLM

Mon, Jan 12 - Sun, Jan 25

5:45 pm - 10:40 pm

PDX

OSL

19h 55m1 stop

7:20 am - 3:55 pm

OSL

PDX

17h 35m1 stop

$496British Airways

Mon, Jan 12 - Sun, Jan 25

5:45 pm - 10:55 am

PDX

OSL

32h 10m1 stop

7:10 am - 3:55 pm

OSL

PDX

17h 45m1 stop

$502British Airways

Wed, Feb 18 - Fri, Feb 27

8:30 am - 5:40 pm

PDX

OSL

24h 10m2 stops

6:00 pm - 6:56 pm

OSL

PDX

33h 56m2 stops

$509Multiple Airlines

Mon, Jan 12 - Sun, Jan 25

1:24 pm - 3:40 pm

PDX

OSL

17h 16m2 stops

6:15 am - 12:39 am

OSL

PDX

27h 24m2 stops

$513Lufthansa

Thu, Jan 8 - Thu, Jan 15

11:25 am - 4:20 pm

GEG

OSL

19h 55m2 stops

6:30 am - 2:55 pm

OSL

GEG

17h 25m2 stops

$524Multiple Airlines

Wed, Jan 21 - Mon, Feb 9

British Airways flights from State of Washington to Oslo

Our best British Airways deals on State of Washington to Oslo flight tickets

British Airways

Apr 6

SEA1:35 pmSeattle/Tacoma Intl

20h 05m

1 stop

OSL6:40 pmOslo Gardermoen

Apr 13

OSL5:05 pmOslo Gardermoen

34h 20m

1 stop

SEA6:25 pmSeattle/Tacoma Intl

$467

Find similar

British Airways

Mar 17

SEA7:50 pmSeattle/Tacoma Intl

31h 05m

1 stop

OSL10:55 amOslo Gardermoen

Apr 8

OSL5:05 pmOslo Gardermoen

34h 20m

1 stop

SEA6:25 pmSeattle/Tacoma Intl

$477

Find similar

British Airways

Mar 17

SEA7:15 amSeattle/Tacoma Intl

22h 55m

2 stops

OSL2:10 pmOslo Gardermoen

Apr 8

OSL11:35 amOslo Gardermoen

15h 50m

1 stop

SEA6:25 pmSeattle/Tacoma Intl

$483

Find similar

KLM flights from State of Washington to Oslo

Our best KLM deals on State of Washington to Oslo flight tickets

KLM

Jan 12

PDX7:00 amPortland

16h 40m

2 stops

OSL8:40 amOslo Gardermoen

Jan 25

OSL9:50 amOslo Gardermoen

19h 35m

2 stops

PDX8:25 pmPortland

$476

Find similar

KLM

Jan 12

PDX7:00 amPortland

16h 40m

2 stops

OSL8:40 amOslo Gardermoen

Jan 25

OSL6:30 amOslo Gardermoen

13h 55m

1 stop

PDX11:25 amPortland

$478

Find similar

KLM

Jan 16

PDX1:25 pmPortland

34h 15m

1 stop

OSL8:40 amOslo Gardermoen

Jan 29

OSL5:00 pmOslo Gardermoen

27h 25m

1 stop

PDX11:25 amPortland

$515

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 1/22

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Thu 1/29

1:10 pm-5:00 pm

1 stop12h 50m

$390

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/11

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Mon 1/26

1:10 pm-5:00 pm

1 stop12h 50m

$392

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 1/22

7:00 am-3:40 pm

2 stops23h 40m

Oslo Gardermoen

Thu 1/29

6:15 am-12:10 pm

1 stop14h 55m

$465

PortlandOslo

PDX - OSL

PDXOSL

Portland

Mon 1/12

7:00 am-8:40 am

2 stops16h 40m

Oslo Gardermoen

Sun 1/25

9:50 am-8:25 pm

2 stops19h 35m

$476

PortlandOslo

PDX - OSL

PDXOSL

Portland

Mon 1/12

7:00 am-8:40 am

2 stops16h 40m

Oslo Gardermoen

Sun 1/25

6:30 am-11:25 am

1 stop13h 55m

$478

PortlandOslo

PDX - OSL

PDXOSL

Portland

Mon 1/12

5:45 pm-10:40 pm

1 stop19h 55m

Oslo Gardermoen

Sun 1/25

7:20 am-3:55 pm

1 stop17h 35m

$496

PortlandOslo

PDX - OSL

PDXOSL

Portland

Wed 2/18

5:45 pm-10:55 am

1 stop32h 10m

Oslo Gardermoen

Fri 2/27

7:10 am-3:55 pm

1 stop17h 45m

$502

PortlandOslo

PDX - OSL

PDXOSL

Portland

Mon 1/12

8:30 am-5:40 pm

2 stops24h 10m

Oslo Gardermoen

Sun 1/25

6:00 pm-6:56 pm

2 stops33h 56m

$509

PortlandOslo

PDX - OSL

PDXOSL

Portland

Thu 1/8

1:24 pm-3:40 pm

2 stops17h 16m

Oslo Gardermoen

Thu 1/15

6:15 am-12:39 am

2 stops27h 24m

$513

SpokaneOslo

GEG - OSL

GEGOSL

Spokane

Wed 1/21

11:25 am-4:20 pm

2 stops19h 55m

Oslo Gardermoen

Mon 2/9

6:30 am-2:55 pm

2 stops17h 25m

$524

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

Other information

What is the cheapest month to fly to Oslo?

The month of January is, on average, the cheapest month to fly to Oslo from State of Washington, with most prices found around $457. If you’re not able to fly to Oslo in January, then November is your next best option. Flight prices from State of Washington to Oslo during November average around $483.

What is the cheapest day to depart on your flight to Oslo?

The cheapest day to depart on your flight to Oslo is on a Tuesday when prices can be found for as low as $772. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to Oslo for around $896.

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

Flying to Oslo from State of Washington in the evening is the least expensive time of day to depart. momondo users have found prices as low as $696 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $959. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Oslo?

You are more likely to see cheaper flights to Oslo from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Oslo for around $599 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oslo from State of Washington for as low as $531 on momondo.

Cheap State of Washington to Oslo flight deals and tips

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

Fastest flight time	11h 25m
Direct flights	None

The fastest flight from State of Washington to Oslo takes 11h 25m

There are no direct flights from State of Washington to Oslo. There are no popular flight routes from State of Washington to Oslo.

Search flight deals

When did momondo last update prices for flights from Washington to Oslo?
Prices for flights from Washington to Oslo are updated daily.
How many operators does momondo search for flights from Washington to Oslo?
There are 10 operators available for flights from Washington to Oslo as of December 2025.
How old do you have to be to fly from Washington to Oslo?
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 Washington to Oslo.
What documentation or ID do you need to fly to Oslo?
The required travel and health documents for your Oslo 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. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from State of Washington to Oslo

Compare and see reviews for airlines that fly from State of Washington to Oslo with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $354	Free Cancellation	Rating 6.7 7,571 reviews	Search British Airways flights
Icelandair	PriceFrom $403	Free Cancellation	Rating 7.0 589 reviews	Search Icelandair flights
Delta	PriceFrom $478	Free Cancellation	Rating 7.9 8,005 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $483	Free Cancellation	Rating 7.4 1,605 reviews	Search Scandinavian Airlines flights
Finnair	PriceFrom $491	Free Cancellation	Rating 7.6 1,334 reviews	Search Finnair flights
United Airlines	PriceFrom $517	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
KLM	PriceFrom $524	Free Cancellation	Rating 7.7 1,432 reviews	Search KLM flights
Lufthansa	PriceFrom $551	Free Cancellation	Rating 6.8 7,626 reviews	Search Lufthansa flights
Air France	PriceFrom $552	Free Cancellation	Rating 7.4 1,502 reviews	Search Air France flights
American Airlines	PriceFrom $564	Free Cancellation	Rating 7.2 11,049 reviews	Search American Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington to Oslo. Millions of users trust and use momondo every year so you are in good hands.

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 all potential Washington to Oslo 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 Washington to Oslo right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington to Oslo flights. All you need is a valid email address and we will do the rest; it is that quick and easy.