How long is the flight from Thailand to Seattle?

For as low as ฿27,492, Korean Air can have you in Seattle from Thailand in 21h 17m. The distance from Thailand to Seattle is about 11978 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to fly from Thailand to Seattle one-way?

฿14,173 is the cheapest one-way deal found within the past few days, from STARLUX Airlines. You may also be able to find cheap deals on China Airlines and Qatar Airways, with prices starting from ฿15,568 and ฿16,900, respectively.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

What are the most popular routes from Thailand to Seattle?

The most popular flight routes from Thailand to Seattle are Bangkok Suvarnabhumi - Seattle/Tacoma Intl, Bangkok Don Mueang Intl - Seattle/Tacoma Intl and Chiang Mai - Seattle/Tacoma Intl.

What are the most popular airlines that fly from Thailand to Seattle?

When booking a flight from Thailand to Seattle, you may want to consider flying on EVA Air, Asiana Airlines or China Airlines as they are the most popular for this route.

What is the cheapest time of day to fly from TH to SEA?

When flying from Thailand to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Seattle from Thailand?

Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Thailand to Seattle. It is only a 18.4 km journey from Seattle/Tacoma Intl (SEA) to Seattle’s city centre.

Can I find deals for flights from Thailand to Seattle that include hotel bookings?

Yes. In addition to deals on Thailand to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Thailand to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Thailand to Seattle.

Can I find deals for business class flights from Thailand to Seattle?

Yes. Cheapflights offers flight deals from Thailand to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

฿15,620+ Cheap Flights from Thailand to Seattle

Cheap flight deals from Thailand to Seattle

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Thailand to Seattle
Explore the most affordable flight options available from Thailand to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 September 2026.

Thu 10/902:35 -

1 stop22h 05m

Fri 18/912:50 -

1 stop20h 45m

Deal found 6/9฿24,664

Thu 15/1001:35 -

1 stop27h 40m

Thu 22/1000:10 -

1 stop33h 25m

Deal found 7/9฿25,486

Wed 4/1100:20 -

1 stop23h 45m

Mon 9/1111:00 -

1 stop20h 45m

Deal found 4/9฿25,584

Thu 10/909:50 -

1 stop38h 50m

Wed 23/912:50 -

1 stop22h 15m

Deal found 7/9฿25,683

Wed 21/1009:50 -

1 stop38h 50m

Wed 28/1012:00 -

1 stop19h 30m

Deal found 6/9฿25,782

Thu 22/1009:50 -

1 stop38h 50m

Wed 28/1012:00 -

1 stop21h 05m

Deal found 4/9฿25,913

Thu 22/1002:35 -

1 stop22h 05m

Fri 30/1012:00 -

1 stop22h 20m

Deal found 8/9฿25,946

Thu 22/1009:50 -

1 stop19h 25m

Thu 5/1100:10 -

1 stop30h 20m

Deal found 8/9฿26,012

Sun 18/1001:35 -

1 stop27h 40m

Sun 25/1000:10 -

1 stop20h 55m

Deal found 7/9฿26,045

Tue 20/1009:50 -

1 stop38h 50m

Wed 28/1012:00 -

1 stop21h 05m

Deal found 5/9฿26,308

Sat 17/1002:35 -

1 stop24h 39m

Sun 15/1112:30 -

1 stop20h 50m

Deal found 5/9฿26,341

Wed 21/1009:50 -

1 stop17h 24m

Thu 12/1112:30 -

1 stop20h 50m

Deal found 9/9฿26,374

Best flights from Thailand to Seattle
Discover carefully curated flight deals from Thailand to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 September 2026.

Wed 21/1002:35 -

1 stop22h 05m

Fri 6/1111:00 -

1 stop35h 25m

Deal found 4/9฿26,341

Thu 22/1007:00 -

2 stops21h 17m

Fri 6/1115:40 -

1 stop22h 30m

Deal found 4/9฿27,492

Mon 25/111:50 -

1 stop21h 20m

Sat 17/401:30 -

1 stop18h 55m

Deal found 7/9฿29,662

Thu 10/1200:20 -

2 stops31h 58m

Tue 29/1219:55 -

2 stops59h 50m

Deal found 9/9฿30,188

Mon 5/1007:30 -

2 stops22h 40m

Sun 11/1001:15 -

2 stops31h 50m

Deal found 7/9฿34,693

Thu 10/1200:20 -

1 stop28h 50m

Tue 29/1211:00 -

1 stop20h 45m

Deal found 9/9฿26,505

Wed 7/1009:35 -

2 stops25h 26m

Sat 17/1016:30 -

1 stop22h 05m

Deal found 6/9฿27,557

Wed 9/1200:20 -

1 stop23h 45m

Tue 29/1211:00 -

1 stop20h 45m

Deal found 9/9฿26,505

Tue 8/1200:20 -

2 stops52h 54m

Tue 29/1219:55 -

2 stops59h 50m

Deal found 9/9฿30,188

Sat 5/1211:10 -

1 stop40h 25m

Thu 17/1216:05 -

1 stop24h 50m

Deal found 9/9฿60,606

Wed 4/1107:10 -

2 stops41h 30m

Sun 8/1115:40 -

1 stop22h 30m

Deal found 8/9฿27,590

Wed 4/1100:20 -

1 stop23h 45m

Mon 9/1111:00 -

1 stop20h 45m

Deal found 4/9฿26,604

Sun 13/1200:20 -

2 stops34h 58m

Tue 29/1211:00 -

1 stop20h 45m

Deal found 9/9฿30,188

Tue 20/1009:35 -

1 stop18h 50m

Wed 28/1010:40 -

2 stops34h 50m

Deal found 8/9฿27,656

Mon 19/1013:40 -

2 stops33h 05m

Sun 25/1001:10 -

1 stop28h 25m

Deal found 7/9฿35,154

Tue 20/1009:35 -

1 stop18h 50m

Tue 10/1115:35 -

3 stops28h 55m

Deal found 5/9฿27,985

Sat 5/1200:20 -

1 stop23h 45m

Sun 6/1212:30 -

1 stop19h 15m

Deal found 4/9฿29,794

Thu 22/1007:00 -

2 stops21h 17m

Wed 11/1106:00 -

2 stops38h 30m

Deal found 5/9฿28,215

Mon 9/1123:00 -

2 stops34h 26m

Thu 19/1116:05 -

1 stop27h 00m

Deal found 9/9฿60,672

Thu 22/1009:15 -

2 stops24h 00m

Thu 5/1100:10 -

3 stops28h 05m

Deal found 8/9฿58,666

Tue 20/1023:50 -

1 stop27h 35m

Fri 13/1110:40 -

2 stops42h 30m

Deal found 9/9฿61,133

Sat 20/223:00 -

1 stop28h 35m

Sat 1/511:44 -

2 stops33h 21m

Deal found 7/9฿62,908

Wed 7/1023:50 -

2 stops32h 54m

Wed 14/1017:15 -

1 stop27h 55m

Deal found 7/9฿65,342

Fri 16/1012:10 -

2 stops44h 34m

Fri 23/1017:15 -

1 stop36h 55m

Deal found 7/9฿66,624

Sun 1/1123:00 -

2 stops34h 33m

Tue 24/1110:40 -

2 stops32h 25m

Deal found 6/9฿66,920

Fri 29/123:00 -

1 stop28h 35m

Sat 20/317:05 -

1 stop37h 05m

Deal found 8/9฿81,028

Find flight deals from Thailand to Seattle

Round-trip from	฿25,486
One-way from	฿15,620
Popular in	August
Cheapest in	March
Average price	฿27,820

Asiana Airlines
15/10-22/10
2 total stops
61h 05m total
Thailand to Seattle

Search Deals

Korean Air
18/11-31/12
1 total stop
23h 45m total
Thailand to Seattle

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (฿55,035 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (฿13,004 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Mon 21/12

00:20-09:05

1 stop23h 45m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿15,620

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Wed 18/11

00:20-09:05

1 stop23h 45m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿15,620

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Thu 24/12

00:20-09:05

1 stop23h 45m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿15,719

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Sat 5/12

00:20-11:56

1 stop26h 36m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿15,752

Chiang MaiSeattle

CNX Chiang Mai - SEA Seattle/Tacoma Intl

CNXSEA

Chiang Mai

Mon 18/1

11:25-18:10

1 stop21h 45m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿15,752

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Mon 7/12

01:05-11:56

1 stop25h 51m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿15,752

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Sun 6/12

21:40-09:05

1 stop26h 25m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿15,752

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Sun 25/10

23:15-15:10

1 stop29h 55m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿15,818

Fastest return journey

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Fri 20/11

13:45-15:05

1 stop16h 20m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿16,968

BangkokSeattle

BKK Bangkok Suvarnabhumi - SEA Seattle/Tacoma Intl

BKKSEA

Bangkok Suvarnabhumi

Mon 21/9

02:35-23:14

2 stops34h 39m

Seattle/Tacoma Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

฿17,626

Flights are sorted by cheapest return flights first.

Deals found on 5/9

Showing 1-10 of 53 resultsSorted by cheapest first

...

Best time to book a flight from Thailand to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Thailand with our price prediction graph.

CNX-SEA

BKK-SEA

DMK-SEA

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Thailand to Seattle

TH0-SEA

CNX-SEA

BKK-SEA

DMK-SEA

What is the cheapest month to book a flight from Thailand to Seattle?

Currently, March is the cheapest month in which you can book a flight from Thailand to Seattle (average of ฿24,400). Flying from Thailand to Seattle in August is currently the most expensive (average of ฿32,918). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How far ahead should I book a flight from Thailand to Seattle?

The price you pay for your flight from Thailand to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 81 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from Thailand to Seattle, such as STARLUX Airlines,EVA Air, andChina Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

STARLUX Airlines

8.7

Very Good

Check prices

Reviews

1 / 15

8.0

Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

STARLUX Airlines

8.7

Very Good

STARLUX Airlines

8.7

Very Good

Check prices

Reviews

1 / 15

8.0

Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

EVA Air

8.5

Very Good

1,522 reviews

STARLUX Airlines

8.7

Very Good

Check prices

Reviews

1 / 15

8.0

Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

China Airlines

8.3

Very Good

844 reviews

STARLUX Airlines

8.7

Very Good

Check prices

Reviews

1 / 15

8.0

Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

Asiana Airlines

8.1

Very Good

561 reviews

STARLUX Airlines

8.7

Very Good

Check prices

Reviews

1 / 15

8.0

Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

Philippine Airlines

7.3

Good

1,024 reviews

STARLUX Airlines

8.7

Very Good

Check prices

Reviews

1 / 15

8.0

Excellent

Anonymous,Jul 2026

TPE - CRK

Communication from other airlines. They were not aware that my connecting flight was late. I booked everything here but no one took care of it by checking.

Related info for your journey

What airport do you fly into for flights to Seattle from Thailand?
Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Thailand to Seattle. It is only a 18.4 km journey from Seattle/Tacoma Intl (SEA) to Seattle’s city centre.
How long is the flight from Thailand to Seattle?
For as low as ฿27,492, Korean Air can have you in Seattle from Thailand in 21h 17m. The distance from Thailand to Seattle is about 11978 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines to fly from Thailand to Seattle one-way?
฿14,173 is the cheapest one-way deal found within the past few days, from STARLUX Airlines. You may also be able to find cheap deals on China Airlines and Qatar Airways, with prices starting from ฿15,568 and ฿16,900, respectively.
What are the most popular routes from Thailand to Seattle?
The most popular flight routes from Thailand to Seattle are Bangkok Suvarnabhumi - Seattle/Tacoma Intl, Bangkok Don Mueang Intl - Seattle/Tacoma Intl and Chiang Mai - Seattle/Tacoma Intl.
Can I find deals for flights from Thailand to Seattle that include hotel bookings?
Yes. In addition to deals on Thailand to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Thailand to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Thailand to Seattle.
Can I find deals for business class flights from Thailand to Seattle?
Yes. Cheapflights offers flight deals from Thailand to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Thailand to Seattle?
Currently, March is the cheapest month in which you can book a flight from Thailand to Seattle (average of ฿24,400). Flying from Thailand to Seattle in August is currently the most expensive (average of ฿32,918). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Popular flights

Alternative routes for Thailand to Seattle

Chiang Mai to Seattle flights

Chiang Mai to Portland flights

Top 5 airlines flying from Thailand to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Philippine Airlines	Cheapest฿21,114	Average฿22,642	FlexibilityNo cancel fee	On-time60%	Search Philippine Airlines flights
China Airlines	Cheapest฿21,954	Average฿26,516	FlexibilityNo cancel fee	On-time70%	Search China Airlines flights
Asiana Airlines	Cheapest฿22,047	Average฿23,966	FlexibilityNo cancel fee	On-time76%	Search Asiana Airlines flights
STARLUX Airlines	Cheapest฿23,638	Average฿29,612	FlexibilityNo cancel fee	On-timeN/A	Search STARLUX Airlines flights
EVA Air	Cheapest฿26,153	Average฿30,097	FlexibilityNo cancel fee	On-time74%	Search EVA Air flights

Fly with Cheapflights

How does Cheapflights help users find flights from Thailand to Seattle?

Cheapflights makes it easy to find Thailand to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Thailand to Seattle?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Thailand.

Can Cheapflights find flights from Thailand to Seattle with no change fees?

Certainly. Search results for flights to Seattle from Thailand shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Thailand to Seattle become cheaper?

Yes! Start tracking prices for Thailand to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Thailand to Seattle from ฿15,620

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Thailand to Seattle

Cheapest flights from Thailand to SeattleExplore the most affordable flight options available from Thailand to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 September 2026.

Explore the most affordable flight options available from Thailand to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 September 2026.

Best flights from Thailand to SeattleDiscover carefully curated flight deals from Thailand to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 September 2026.

Discover carefully curated flight deals from Thailand to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 September 2026.

Last-minute flights from Thailand to SeattleDiscover last-minute flight deals from Thailand to Seattle. Data last updated 9 September 2026 and is based on user searches.

Discover last-minute flight deals from Thailand to Seattle. Data last updated 9 September 2026 and is based on user searches.

One-way flights from Thailand to SeattleSearch for one-way flight options from Thailand to Seattle. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.

Search for one-way flight options from Thailand to Seattle. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.

Find flight deals from Thailand to Seattle

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Thailand to Seattle that are best for you.

Best time to book a flight from Thailand to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Thailand with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Thailand to Seattle?

How far ahead should I book a flight from Thailand to Seattle?

The price you pay for your flight from Thailand to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 81 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from Thailand to Seattle, such as STARLUX Airlines,EVA Air, andChina Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly into for flights to Seattle from Thailand?

How long is the flight from Thailand to Seattle?

What are the cheapest airlines to fly from Thailand to Seattle one-way?

What are the most popular routes from Thailand to Seattle?

Can I find deals for flights from Thailand to Seattle that include hotel bookings?

How can I find direct flights from Thailand to Seattle?

Can I find deals for business class flights from Thailand to Seattle?

What is the cheapest month to book a flight from Thailand to Seattle?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Thailand to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Thailand to Seattle by cabin class

Find flights from Thailand to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Thailand and Seattle flights

Browse other Thailand and Seattle flight options. Last updated on 9 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 5 airlines flying from Thailand to Seattle

Fly with Cheapflights

How does Cheapflights help users find flights from Thailand to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Thailand to Seattle?

Can Cheapflights find flights from Thailand to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Thailand to Seattle become cheaper?

100% Free

Book With Flexibility

Travel Smart

Cheapest flights from Thailand to Seattle
Explore the most affordable flight options available from Thailand to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 September 2026.

Best flights from Thailand to Seattle
Discover carefully curated flight deals from Thailand to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 September 2026.

Last-minute flights from Thailand to Seattle
Discover last-minute flight deals from Thailand to Seattle. Data last updated 9 September 2026 and is based on user searches.

One-way flights from Thailand to Seattle
Search for one-way flight options from Thailand to Seattle. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.