What is the cheapest airline that flies from Seattle/Tacoma Intl to Oslo?

British Airways and Lufthansa are the most popular carriers operating from Seattle/Tacoma Intl to Oslo

What airlines fly to Oslo?

Icelandair, Scandinavian Airlines and Delta are the top three most popular airlines that fly to Oslo from Seattle according to our data. Icelandair is the first choice among our users, with 66% 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.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Oslo?

Prices for flights from Seattle/Tacoma Intl Airport to Oslo are refreshed on a daily basis.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Oslo?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Oslo is 10 as of December 2025.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Oslo?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Oslo.

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

The travel and health documents you'll need for your trip to Oslo may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Oslo. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$330 Cheap Flights from Seattle to Oslo in 2025/26

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Find the cheapest flights from Seattle to Oslo

Round-trip

One-way

Last minute

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

$360Icelandair

Sat, Jan 31 - Sat, Feb 7

2:35 pm - 8:35 pm

SEA

OSL

21h 00m1 stop

9:30 pm - 5:00 pm

OSL

SEA

28h 30m1 stop

$375Icelandair

Sat, Jan 10 - Sun, Jan 25

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

2:35 pm - 11:35 am

SEA

OSL

12h 00m1 stop

9:30 pm - 5:00 pm

OSL

SEA

28h 30m1 stop

$393Icelandair

Thu, Jan 22 - Sun, Feb 8

2:35 pm - 11:35 am

SEA

OSL

12h 00m1 stop

1:10 pm - 6:25 pm

OSL

SEA

13h 15m1 stop

$429Icelandair

Sun, Mar 1 - Sat, Mar 14

8:20 pm - 10:35 am

SEA

OSL

29h 15m1 stop

5:05 pm - 11:35 am

OSL

SEA

27h 30m1 stop

$468British Airways

Mon, Apr 6 - Mon, Apr 13

10:55 am - 2:30 pm

SEA

TRF

18h 35m2 stops

6:00 am - 11:35 pm

TRF

SEA

26h 35m2 stops

$616Scandinavian Airlines

Tue, Apr 21 - Thu, Apr 30

11:35 am - 4:35 pm

SEA

TRF

20h 00m2 stops

2:35 pm - 10:25 pm

TRF

SEA

40h 50m2 stops

$625Scandinavian Airlines

Sat, Feb 21 - Mon, Mar 2

7:00 pm - 6:00 pm

SEA

TRF

14h 00m2 stops

12:10 pm - 5:55 pm

TRF

SEA

14h 45m2 stops

$767Multiple Airlines

Sat, Apr 25 - Wed, May 20

7:00 pm - 6:35 pm

SEA

TRF

14h 35m2 stops

12:10 pm - 5:55 pm

TRF

SEA

14h 45m2 stops

$773Multiple Airlines

Fri, May 8 - Fri, May 22

British Airways flights from Seattle to Oslo

Our best British Airways deals on Seattle to Oslo flight tickets

British Airways

Apr 6

SEA8:20 pmSeattle/Tacoma Intl

29h 15m

1 stop

OSL10:35 amOslo Gardermoen

Apr 13

OSL5:05 pmOslo Gardermoen

27h 30m

1 stop

SEA11:35 amSeattle/Tacoma Intl

$468

Find similar

British Airways

Mar 17

SEA7:50 pmSeattle/Tacoma Intl

34h 20m

1 stop

OSL2:10 pmOslo Gardermoen

Apr 8

OSL11:35 amOslo Gardermoen

15h 50m

1 stop

SEA6:25 pmSeattle/Tacoma Intl

$477

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

$478

Find similar

Lufthansa flights from Seattle to Oslo

Our best Lufthansa deals on Seattle to Oslo flight tickets

Lufthansa

Jan 22

SEA7:00 amSeattle/Tacoma Intl

23h 40m

2 stops

OSL3:40 pmOslo Gardermoen

Jan 27

OSL6:25 pmOslo Gardermoen

27h 55m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$473

Find similar

Lufthansa

Jan 15

SEA2:10 pmSeattle/Tacoma Intl

18h 30m

2 stops

OSL5:40 pmOslo Gardermoen

Jan 22

OSL6:15 amOslo Gardermoen

22h 01m

2 stops

SEA7:16 pmSeattle/Tacoma Intl

$493

Find similar

Lufthansa

May 8

SEA6:50 pmSeattle/Tacoma Intl

14h 05m

1 stop

OSL5:55 pmOslo Gardermoen

May 22

OSL11:45 amOslo Gardermoen

14h 14m

1 stop

SEA4:59 pmSeattle/Tacoma Intl

$494

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 1/31

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sat 2/7

1:10 pm-5:00 pm

1 stop12h 50m

$360

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 1/10

2:35 pm-8:35 pm

1 stop21h 00m

Oslo Gardermoen

Sun 1/25

9:30 pm-5:00 pm

1 stop28h 30m

$375

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

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 2/8

9:30 pm-5:00 pm

1 stop28h 30m

$393

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 3/1

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sat 3/14

1:10 pm-6:25 pm

1 stop13h 15m

$429

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 4/6

8:20 pm-10:35 am

1 stop29h 15m

Oslo Gardermoen

Mon 4/13

5:05 pm-11:35 am

1 stop27h 30m

$468

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 4/21

10:55 am-2:30 pm

2 stops18h 35m

Oslo Sandefjord

Thu 4/30

6:00 am-11:35 pm

2 stops26h 35m

$616

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sat 2/21

11:35 am-4:35 pm

2 stops20h 00m

Oslo Sandefjord

Mon 3/2

2:35 pm-10:25 pm

2 stops40h 50m

$625

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sat 4/25

7:00 pm-6:00 pm

2 stops14h 00m

Oslo Sandefjord

Wed 5/20

12:10 pm-5:55 pm

2 stops14h 45m

$767

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Fri 5/8

7:00 pm-6:35 pm

2 stops14h 35m

Oslo Sandefjord

Fri 5/22

12:10 pm-5:55 pm

2 stops14h 45m

$773

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 Seattle 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

What is the cheapest month to fly to Oslo?

The month of January is, on average, the cheapest month to fly to Oslo from Seattle, 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 Seattle 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 Seattle to Oslo for around $896.

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

Flying to Oslo from Seattle 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 Seattle 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 Seattle for as low as $531 on momondo.

Cheap Seattle to Oslo flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Oslo

Fastest flight time	11h 25m
Direct flights	None

The fastest flight from Seattle to Oslo takes 11h 25m

There are no direct flights from Seattle to Oslo. There are no popular flight routes from Seattle to Oslo.

Search flight deals

How far is Seattle/Tacoma Intl to Oslo by plane?
Seattle/Tacoma Intl and Oslo are 4550.6 mi apart from one another. A reasonable flight in good conditions will take 11h 25m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Oslo?
Prices for flights from Seattle/Tacoma Intl Airport to Oslo are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Oslo?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Oslo is 10 as of December 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Oslo?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Oslo.
What documentation or ID do you need to fly to Oslo?
The travel and health documents you'll need for your trip to Oslo may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Oslo. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Seattle to Oslo

Compare and see reviews for airlines that fly from Seattle to Oslo with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $354	Free Cancellation	Rating 6.7 7,585 reviews	Search British Airways flights
Icelandair	PriceFrom $403	Free Cancellation	Rating 7.0 591 reviews	Search Icelandair flights
Delta	PriceFrom $478	Free Cancellation	Rating 7.9 8,005 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $492	Free Cancellation	Rating 7.4 1,607 reviews	Search Scandinavian Airlines flights
American Airlines	PriceFrom $510	Free Cancellation	Rating 7.2 11,055 reviews	Search American Airlines flights
United Airlines	PriceFrom $517	Free Cancellation	Rating 7.4 9,093 reviews	Search United Airlines flights
KLM	PriceFrom $524	Free Cancellation	Rating 7.7 1,428 reviews	Search KLM flights
Lufthansa	PriceFrom $551	Free Cancellation	Rating 6.8 7,635 reviews	Search Lufthansa flights
Air France	PriceFrom $552	Free Cancellation	Rating 7.4 1,507 reviews	Search Air France flights
Finnair	PriceFrom $569	Free Cancellation	Rating 7.6 1,338 reviews	Search Finnair flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle 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 Seattle.

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

Yes. momondo enables you to select and highlight flights to Oslo from Seattle with this policy.

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

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

Yes. momondo can track prices for Seattle to Oslo flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.