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

Icelandair, SWISS, and British Airways 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 November 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.

$263 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.

3:35 pm - 11:35 amSEA-OSL

12h 00m1 stop

1:10 pm - 6:00 pmOSL-SEA

12h 50m1 stop

$391Icelandair

Find Deal

lun., mar. 9 - lun., mar. 16

7:00 pm - 12:35 pmSEA-OSL

32h 35m1 stop

4:30 pm - 5:50 pmOSL-SEA

34h 20m1 stop

$394Icelandair

Find Deal

jue., abr. 23 - jue., may. 7

7:00 pm - 3:25 pmSEA-OSL

11h 25m1 stop

4:30 pm - 5:50 pmOSL-SEA

34h 20m1 stop

$397Icelandair

Find Deal

sáb., abr. 11 - dom., abr. 19

7:00 pm - 3:25 pmSEA-OSL

11h 25m1 stop

1:50 pm - 8:45 pmOSL-SEA

15h 55m1 stop

$398Icelandair

Find Deal

mié., abr. 22 - jue., may. 7

2:00 pm - 5:20 pmSEA-OSL

18h 20m2 stops

9:00 pm - 1:45 pmOSL-SEA

25h 45m1 stop

$418Scandinavian Airlines

Find Deal

mar., may. 5 - jue., may. 21

2:25 pm - 2:10 pmSEA-OSL

15h 45m1 stop

11:35 am - 6:25 pmOSL-SEA

15h 50m1 stop

$443British Airways

Find Deal

mar., mar. 17 - mié., abr. 8

9:50 am - 2:30 pmSEA-TRF

19h 40m2 stops

6:00 am - 1:45 pmTRF-SEA

16h 45m1 stop

$499Scandinavian Airlines

Find Deal

mar., may. 12 - mar., jun. 2

2:10 pm - 3:05 pmSEA-TRF

39h 55m2 stops

9:00 am - 12:20 pmTRF-SEA

36h 20m2 stops

$538Lufthansa

Find Deal

dom., abr. 12 - dom., abr. 19

7:00 pm - 6:00 pmSEA-TRF

14h 00m2 stops

12:10 pm - 6:00 pmTRF-SEA

14h 50m2 stops

$767Multiple Airlines

Find Deal

sáb., abr. 25 - mié., may. 20

7:00 pm - 6:35 pmSEA-TRF

14h 35m2 stops

12:10 pm - 6:00 pmTRF-SEA

14h 50m2 stops

$773Multiple Airlines

Find Deal

vie., may. 8 - vie., may. 22

Icelandair flights from Seattle to Oslo

Our best Icelandair deals on Seattle to Oslo flight tickets

Icelandair

Mar 9

SEA3:35 pmSeattle/Tacoma Intl

12h 00m

1 stop

OSL11:35 amOslo Gardermoen

Mar 16

OSL1:10 pmOslo Gardermoen

12h 50m

1 stop

SEA6:00 pmSeattle/Tacoma Intl

$391

Find similar

Icelandair

Apr 23

SEA7:00 pmSeattle/Tacoma Intl

32h 35m

1 stop

OSL12:35 pmOslo Gardermoen

May 7

OSL4:30 pmOslo Gardermoen

34h 20m

1 stop

SEA5:50 pmSeattle/Tacoma Intl

$394

Find similar

Icelandair

Apr 11

SEA7:00 pmSeattle/Tacoma Intl

11h 25m

1 stop

OSL3:25 pmOslo Gardermoen

Apr 19

OSL4:30 pmOslo Gardermoen

34h 20m

1 stop

SEA5:50 pmSeattle/Tacoma Intl

$397

Find similar

Delta flights from Seattle to Oslo

Our best Delta deals on Seattle to Oslo flight tickets

Delta

Feb 11

SEA1:38 pmSeattle/Tacoma Intl

20h 12m

2 stops

OSL6:50 pmOslo Gardermoen

Feb 16

OSL6:30 amOslo Gardermoen

14h 10m

1 stop

SEA11:40 amSeattle/Tacoma Intl

$505

Find similar

Delta

Dec 2

SEA1:40 pmSeattle/Tacoma Intl

17h 40m

1 stop

OSL4:20 pmOslo Gardermoen

Dec 8

OSL6:25 amOslo Gardermoen

16h 00m

1 stop

SEA1:25 pmSeattle/Tacoma Intl

$518

Find similar

Delta

Dec 2

SEA1:40 pmSeattle/Tacoma Intl

17h 40m

1 stop

OSL4:20 pmOslo Gardermoen

Dec 7

OSL9:25 amOslo Gardermoen

35h 25m

1 stop

SEA11:50 amSeattle/Tacoma Intl

$520

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

lun. 3/9

3:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

lun. 3/16

1:10 pm-6:00 pm

1 stop12h 50m

$391

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

jue. 4/23

7:00 pm-12:35 pm

1 stop32h 35m

Oslo Gardermoen

jue. 5/7

4:30 pm-5:50 pm

1 stop34h 20m

$394

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

sáb. 4/11

7:00 pm-3:25 pm

1 stop11h 25m

Oslo Gardermoen

dom. 4/19

4:30 pm-5:50 pm

1 stop34h 20m

$397

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

mié. 4/22

7:00 pm-3:25 pm

1 stop11h 25m

Oslo Gardermoen

jue. 5/7

1:50 pm-8:45 pm

1 stop15h 55m

$398

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

mar. 5/5

2:00 pm-5:20 pm

2 stops18h 20m

Oslo Gardermoen

jue. 5/21

9:00 pm-1:45 pm

1 stop25h 45m

$418

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

mar. 3/17

2:25 pm-2:10 pm

1 stop15h 45m

Oslo Gardermoen

mié. 4/8

11:35 am-6:25 pm

1 stop15h 50m

$443

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

mar. 5/12

9:50 am-2:30 pm

2 stops19h 40m

Oslo Sandefjord

mar. 6/2

6:00 am-1:45 pm

1 stop16h 45m

$499

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

dom. 4/12

2:10 pm-3:05 pm

2 stops39h 55m

Oslo Sandefjord

dom. 4/19

9:00 am-12:20 pm

2 stops36h 20m

$538

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

sáb. 4/25

7:00 pm-6:00 pm

2 stops14h 00m

Oslo Sandefjord

mié. 5/20

12:10 pm-6:00 pm

2 stops14h 50m

$767

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

vie. 5/8

7:00 pm-6:35 pm

2 stops14h 35m

Oslo Sandefjord

vie. 5/22

12:10 pm-6:00 pm

2 stops14h 50m

$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 $434. 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 $590 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 November 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 7,539 reviews	Search British Airways flights
Icelandair	PriceFrom $402	Free Cancellation	Rating 7.0 582 reviews	Search Icelandair flights
Delta	PriceFrom $478	Free Cancellation	Rating 7.9 8,003 reviews	Search Delta flights
Finnair	PriceFrom $491	Free Cancellation	Rating 7.6 1,334 reviews	Search Finnair flights
Scandinavian Airlines	PriceFrom $492	Free Cancellation	Rating 7.4 1,589 reviews	Search Scandinavian Airlines flights
United Airlines	PriceFrom $517	Free Cancellation	Rating 7.4 9,050 reviews	Search United Airlines flights
KLM	PriceFrom $524	Free Cancellation	Rating 7.7 1,423 reviews	Search KLM flights
Lufthansa	PriceFrom $551	Free Cancellation	Rating 6.8 7,594 reviews	Search Lufthansa flights
Air France	PriceFrom $552	Free Cancellation	Rating 7.4 1,498 reviews	Search Air France flights
American Airlines	PriceFrom $564	Free Cancellation	Rating 7.2 11,038 reviews	Search American Airlines 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.