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

Finnair, British Airways, and American Airlines are the most popular carriers operating from Oslo to Seattle/Tacoma Intl

What airlines fly to Seattle?

Icelandair, Lufthansa and British Airways are the top three most popular airlines that fly to Seattle from Oslo according to our data. Icelandair is the first choice among our users, with 29% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 5 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Oslo to Seattle/Tacoma Intl Airport are updated daily.

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

As of November 2025, there are 5 operators available to choose from for flights from Oslo to Seattle/Tacoma Intl Airport.

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

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 Oslo to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

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

$279 Cheap Flights from Oslo to Seattle in 2025/26

Q: What is the typical price of a round-trip flight between Oslo and Seattle?

Prices are currently typical for flights on this route. Typical prices usually range from $384 to $540. The lowest price recently found on this route was $431.

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Find the cheapest flights from Oslo to Seattle

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

1:10 pm - 5:00 pmOSL-SEA

12h 50m1 stop

2:35 pm - 11:35 amSEA-OSL

12h 00m1 stop

$431Icelandair

Find Deal

Fri, Nov 14 - Thu, Nov 27

1:10 pm - 5:00 pmOSL-SEA

12h 50m1 stop

2:35 pm - 11:35 amSEA-OSL

12h 00m1 stop

$438Icelandair

Find Deal

Mon, Nov 24 - Sun, Dec 7

6:15 am - 12:10 pmOSL-SEA

14h 55m1 stop

2:00 pm - 3:20 pmSEA-OSL

16h 20m1 stop

$461Lufthansa

Find Deal

Sat, Feb 21 - Sat, Feb 28

6:15 am - 12:10 pmOSL-SEA

14h 55m1 stop

7:00 am - 1:05 pmSEA-OSL

21h 05m2 stops

$471Lufthansa

Find Deal

Mon, Nov 24 - Sun, Dec 7

5:00 pm - 11:45 amOSL-SEA

27h 45m1 stop

3:05 pm - 4:15 pmSEA-OSL

16h 10m1 stop

$477KLM

Find Deal

Thu, Nov 20 - Thu, Dec 4

6:30 am - 6:41 pmOSL-SEA

21h 11m2 stops

4:48 pm - 6:50 pmSEA-OSL

17h 02m1 stop

$500Delta

Find Deal

Fri, Nov 14 - Thu, Nov 27

6:25 am - 1:20 pmOSL-SEA

15h 55m1 stop

2:02 pm - 6:50 pmSEA-OSL

19h 48m2 stops

$501Delta

Find Deal

Fri, Nov 14 - Thu, Nov 27

6:30 am - 4:21 pmOSL-SEA

18h 51m2 stops

3:10 pm - 4:15 pmSEA-OSL

16h 05m1 stop

$721KLM

Find Deal

Wed, Dec 17 - Thu, Jan 1

3:05 pm - 11:30 amOSL-SEA

29h 25m1 stop

6:50 pm - 11:00 pmSEA-OSL

19h 10m1 stop

$836British Airways

Find Deal

Fri, Dec 26 - Sat, Jan 10

7:10 am - 4:55 pmOSL-SEA

18h 45m1 stop

6:50 pm - 11:00 pmSEA-OSL

19h 10m1 stop

$851British Airways

Find Deal

Fri, Dec 26 - Sat, Jan 10

Icelandair flights from Oslo to Seattle

Our best Icelandair deals on Oslo to Seattle flight tickets

Icelandair

Nov 14

OSL1:10 pmOslo Gardermoen

12h 50m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

Nov 27

SEA2:35 pmSeattle/Tacoma Intl

12h 00m

1 stop

OSL11:35 amOslo Gardermoen

$431

Find similar

Icelandair

Nov 24

OSL1:10 pmOslo Gardermoen

12h 50m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

Dec 7

SEA2:35 pmSeattle/Tacoma Intl

12h 00m

1 stop

OSL11:35 amOslo Gardermoen

$438

Find similar

Icelandair

Nov 23

OSL9:30 pmOslo Gardermoen

28h 30m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

Dec 6

SEA2:35 pmSeattle/Tacoma Intl

21h 00m

1 stop

OSL8:35 pmOslo Gardermoen

$442

Find similar

Lufthansa flights from Oslo to Seattle

Our best Lufthansa deals on Oslo to Seattle flight tickets

Lufthansa

Feb 21

OSL6:15 amOslo Gardermoen

14h 55m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

Feb 28

SEA2:00 pmSeattle/Tacoma Intl

16h 20m

1 stop

OSL3:20 pmOslo Gardermoen

$461

Find similar

Lufthansa

Nov 24

OSL6:15 amOslo Gardermoen

14h 55m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

Dec 7

SEA7:00 amSeattle/Tacoma Intl

21h 05m

2 stops

OSL1:05 pmOslo Gardermoen

$471

Find similar

Lufthansa

Nov 24

OSL6:15 amOslo Gardermoen

25h 13m

2 stops

SEA10:28 pmSeattle/Tacoma Intl

Dec 7

SEA1:40 pmSeattle/Tacoma Intl

24h 50m

2 stops

OSL11:30 pmOslo Gardermoen

$474

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 11/14

1:10 pm-5:00 pm

1 stop12h 50m

Seattle/Tacoma Intl

Thu 11/27

2:35 pm-11:35 am

1 stop12h 00m

$431

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 11/24

1:10 pm-5:00 pm

1 stop12h 50m

Seattle/Tacoma Intl

Sun 12/7

2:35 pm-11:35 am

1 stop12h 00m

$438

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sat 2/21

6:15 am-12:10 pm

1 stop14h 55m

Seattle/Tacoma Intl

Sat 2/28

2:00 pm-3:20 pm

1 stop16h 20m

$461

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 11/24

6:15 am-12:10 pm

1 stop14h 55m

Seattle/Tacoma Intl

Sun 12/7

7:00 am-1:05 pm

2 stops21h 05m

$471

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 11/20

5:00 pm-11:45 am

1 stop27h 45m

Seattle/Tacoma Intl

Thu 12/4

3:05 pm-4:15 pm

1 stop16h 10m

$477

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 11/14

6:30 am-6:41 pm

2 stops21h 11m

Seattle/Tacoma Intl

Thu 11/27

4:48 pm-6:50 pm

1 stop17h 02m

$500

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 11/14

6:25 am-1:20 pm

1 stop15h 55m

Seattle/Tacoma Intl

Thu 11/27

2:02 pm-6:50 pm

2 stops19h 48m

$501

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 12/17

6:30 am-4:21 pm

2 stops18h 51m

Seattle/Tacoma Intl

Thu 1/1

3:10 pm-4:15 pm

1 stop16h 05m

$721

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 12/26

3:05 pm-11:30 am

1 stop29h 25m

Seattle/Tacoma Intl

Sat 1/10

6:50 pm-11:00 pm

1 stop19h 10m

$836

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

$851

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 Oslo to Seattle

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 typical price of a round-trip flight between Oslo and Seattle?

What is the cheapest month to fly to Seattle?

In general, November is the cheapest month to fly from Oslo to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $469. If you don’t want to visit Seattle in November, then you should wait until January to fly from Oslo, when ticket prices are also cheap, with an average price of $477.

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

On average, the least expensive day to fly to Seattle from Oslo is on a Saturday. momondo users have found tickets for Saturday departures for as low as $536. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Oslo because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $769.

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

Flying to Seattle from Oslo at noon is the least expensive time of day to depart. momondo users have found prices as low as $536 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $662. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Seattle from Oslo when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $571 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Oslo for as low as $480 on momondo.

Cheap Oslo to Seattle flight deals and tips

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

Direct flights	None

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

Search flight deals

How far is Oslo to Seattle/Tacoma Intl by plane?
There are 4550.6 mi between Oslo and Seattle/Tacoma Intl. Typically, this will take 12h 50m by plane in normal conditions.
When did momondo last update prices for flights from Oslo to Seattle/Tacoma Intl Airport?
Prices for flights from Oslo to Seattle/Tacoma Intl Airport are updated daily.
How many operators does momondo search for flights from Oslo to Seattle/Tacoma Intl Airport?
As of November 2025, there are 5 operators available to choose from for flights from Oslo to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Oslo to Seattle/Tacoma Intl Airport?
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 Oslo to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Oslo to Seattle

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

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $362	Free Cancellation	Rating 6.7 7,494 reviews	Search British Airways flights
Icelandair	PriceFrom $399	Free Cancellation	Rating 7.1 568 reviews	Search Icelandair flights
Lufthansa	PriceFrom $423	Free Cancellation	Rating 6.8 7,544 reviews	Search Lufthansa flights
Delta	PriceFrom $452	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $603	Free Cancellation	Rating 7.4 1,554 reviews	Search Scandinavian Airlines flights

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Renton

Olympia

Lynnwood

Kent

Puyallup

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Redmond

Tukwila

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Lakewood

Cle Elum

Fife

Centralia

Kirkland

Shoreline

Westport

Why use momondo?

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

It is quick and easy to find Oslo to Seattle 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 Seattle that suits you.

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

All flight searches from Oslo to Seattle on momondo can be filtered to show those which offer flexible booking policies.

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

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

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Oslo and alert you when they change.