What airlines fly to Thailand?

Singapore Airlines, Cathay Pacific and Asiana Airlines are the top three most popular airlines that fly to Thailand from Ontario according to our data. Singapore Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 24 different airlines that fly to Thailand on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Thailand?

Delta, Korean Air, and China Airlines are the most popular carriers operating from Ontario to Thailand

When did momondo last update prices for flights from Ontario Airport to Thailand?

Prices for flights from Ontario Airport to Thailand refresh daily.

How many operators does momondo search for flights from Ontario Airport to Thailand?

There are 4 operators available for flights from Ontario Airport to Thailand as of August 2026.

How old do you have to be to fly from Ontario Airport to Thailand?

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 Ontario Airport to Thailand.

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

The travel and health documents you'll need for your trip to Thailand 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 Thailand. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$402 Cheap Flights from Ontario to Thailand in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Thailand

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:30 pm - 12:00 pmONT Ontario-BKK Bangkok Suvarnabhumi

22h 30m1 stop Taipei City Taiwan Taoyuan Intl

1:45 pm - 3:55 pmBKK Bangkok Suvarnabhumi-ONT Ontario

17h 10m1 stop Taipei City Taiwan Taoyuan Intl

$759STARLUX Airlines

Mon, Sep 28 - Wed, Nov 4

11:30 pm - 12:00 pmONT Ontario-BKK Bangkok Suvarnabhumi

22h 30m1 stop Taipei City Taiwan Taoyuan Intl

5:40 pm - 4:55 pmBKK Bangkok Suvarnabhumi-ONT Ontario

37h 15m1 stop Taipei City Taiwan Taoyuan Intl

$760STARLUX Airlines

Wed, Oct 7 - Sun, Oct 25

7:00 am - 9:30 pmONT Ontario-BKK Bangkok Suvarnabhumi

23h 30m2 stops Seattle/Tacoma Intl Incheon Intl

12:55 am - 1:57 pmBKK Bangkok Suvarnabhumi-ONT Ontario

28h 02m2 stops Incheon Intl Seattle/Tacoma Intl

$778Korean Air

Wed, Dec 30 - Tue, Jan 26

7:00 am - 9:30 pmONT Ontario-BKK Bangkok Suvarnabhumi

23h 30m2 stops Seattle/Tacoma Intl Incheon Intl

12:55 am - 1:57 pmBKK Bangkok Suvarnabhumi-ONT Ontario

28h 02m2 stops Incheon Intl Seattle/Tacoma Intl

$778Korean Air

Wed, Dec 30 - Wed, Jan 27

12:45 am - 9:45 amONT Ontario-BKK Bangkok Suvarnabhumi

19h 00m1 stop Taipei City Taiwan Taoyuan Intl

10:50 am - 6:00 pmBKK Bangkok Suvarnabhumi-ONT Ontario

21h 10m1 stop Taipei City Taiwan Taoyuan Intl

$804China Airlines

Fri, Sep 11 - Sun, Sep 27

12:45 am - 9:45 amONT Ontario-BKK Bangkok Suvarnabhumi

19h 00m1 stop Taipei City Taiwan Taoyuan Intl

1:20 pm - 6:00 pmBKK Bangkok Suvarnabhumi-ONT Ontario

18h 40m1 stop Taipei City Taiwan Taoyuan Intl

$809China Airlines

Sun, Sep 13 - Tue, Sep 29

6:00 am - 10:55 pmONT Ontario-CNX Chiang Mai

25h 55m2 stops Salt Lake City Incheon Intl

12:15 am - 4:30 pmCNX Chiang Mai-ONT Ontario

31h 15m2 stops Incheon Intl Salt Lake City

$822Delta

Wed, Nov 4 - Mon, Nov 16

6:00 am - 10:55 pmONT Ontario-CNX Chiang Mai

25h 55m2 stops Salt Lake City Incheon Intl

12:15 am - 11:00 pmCNX Chiang Mai-ONT Ontario

37h 45m2 stops Incheon Intl Seattle/Tacoma Intl

$822Delta

Wed, Nov 4 - Wed, Nov 11

6:00 am - 9:45 pmONT Ontario-BKK Bangkok Suvarnabhumi

25h 45m2 stops Seattle/Tacoma Intl Incheon Intl

9:50 am - 5:12 pmBKK Bangkok Suvarnabhumi-ONT Ontario

21h 22m2 stops Incheon Intl Seattle/Tacoma Intl

$853Multiple Airlines

Sun, Sep 27 - Tue, Oct 13

7:04 am - 11:20 pmONT Ontario-BKK Bangkok Suvarnabhumi

25h 16m2 stops Seattle/Tacoma Intl Incheon Intl

9:40 am - 4:30 pmBKK Bangkok Suvarnabhumi-ONT Ontario

21h 50m2 stops Incheon Intl Salt Lake City

$888Multiple Airlines

Wed, Nov 11 - Fri, Dec 4

Cheap last minute flights

Enter your travel dates to find the best prices.

11:55 pm - 4:40 pmONT Ontario-BKK Bangkok Suvarnabhumi

26h 45m1 stop Taipei City Taiwan Taoyuan Intl

5:40 pm - 3:55 pmBKK Bangkok Suvarnabhumi-ONT Ontario

37h 15m1 stop Taipei City Taiwan Taoyuan Intl

$775STARLUX Airlines

Fri, Aug 14 - Thu, Dec 10

11:55 pm - 4:40 pmONT Ontario-BKK Bangkok Suvarnabhumi

26h 45m1 stop Taipei City Taiwan Taoyuan Intl

5:40 pm - 4:55 pmBKK Bangkok Suvarnabhumi-ONT Ontario

37h 15m1 stop Taipei City Taiwan Taoyuan Intl

$775STARLUX Airlines

Mon, Aug 17 - Sun, Oct 25

11:55 pm - 4:40 pmONT Ontario-BKK Bangkok Suvarnabhumi

26h 45m1 stop Taipei City Taiwan Taoyuan Intl

1:10 pm - 5:05 pmBKK Bangkok Suvarnabhumi-ONT Ontario

17h 55m1 stop Taipei City Taiwan Taoyuan Intl

$775STARLUX Airlines

Mon, Aug 17 - Wed, Sep 30

12:45 am - 4:20 pmONT Ontario-BKK Bangkok Suvarnabhumi

25h 35m1 stop Taipei City Taiwan Taoyuan Intl

1:20 pm - 6:40 pmBKK Bangkok Suvarnabhumi-ONT Ontario

19h 20m1 stop Taipei City Taiwan Taoyuan Intl

$832China Airlines

Sun, Aug 16 - Thu, Aug 20

12:45 am - 9:45 amONT Ontario-BKK Bangkok Suvarnabhumi

19h 00m1 stop Taipei City Taiwan Taoyuan Intl

1:20 pm - 6:00 pmBKK Bangkok Suvarnabhumi-ONT Ontario

18h 40m1 stop Taipei City Taiwan Taoyuan Intl

$832China Airlines

Sat, Aug 15 - Sun, Sep 20

5:05 pm - 1:05 amONT Ontario-BKK Bangkok Suvarnabhumi

42h 00m2 stops Salt Lake City Incheon Intl

9:40 am - 5:13 pmBKK Bangkok Suvarnabhumi-ONT Ontario

22h 33m2 stops Incheon Intl Seattle/Tacoma Intl

$839Delta

Fri, Aug 14 - Thu, Dec 10

6:01 pm - 1:05 amONT Ontario-BKK Bangkok Suvarnabhumi

41h 04m2 stops Seattle/Tacoma Intl Incheon Intl

9:40 am - 11:58 pmBKK Bangkok Suvarnabhumi-ONT Ontario

29h 18m2 stops Incheon Intl Salt Lake City

$839Delta

Fri, Aug 14 - Thu, Dec 10

1:56 pm - 4:35 amONT Ontario-BKK Bangkok Suvarnabhumi

48h 39m2 stops San Francisco Tokyo Haneda

9:35 am - 10:59 pmBKK Bangkok Suvarnabhumi-ONT Ontario

51h 24m2 stops Tokyo Haneda San Francisco

$928United Airlines

Tue, Aug 18 - Sun, Aug 23

6:08 am - 4:35 amONT Ontario-BKK Bangkok Suvarnabhumi

32h 27m2 stops San Francisco Tokyo Haneda

9:35 am - 10:59 pmBKK Bangkok Suvarnabhumi-ONT Ontario

27h 24m2 stops Tokyo Haneda San Francisco

$928United Airlines

Mon, Aug 17 - Thu, Aug 20

6:00 am - 9:45 pmONT Ontario-BKK Bangkok Suvarnabhumi

25h 45m2 stops Salt Lake City Incheon Intl

9:40 pm - 10:45 pmBKK Bangkok Suvarnabhumi-ONT Ontario

39h 05m2 stops Incheon Intl Seattle/Tacoma Intl

$1,227Korean Air

Mon, Aug 17 - Wed, Aug 19

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China Airlines flights from Ontario to Thailand

Our best China Airlines deals on Ontario to Thailand flight tickets

China Airlines

Sep 11

ONT12:45 amOntario

19h 00m

1 stop

BKK9:45 amBangkok Suvarnabhumi

Sep 27

BKK10:50 amBangkok Suvarnabhumi

21h 10m

1 stop

ONT6:00 pmOntario

$804

China Airlines

Sep 13

ONT12:45 amOntario

19h 00m

1 stop

BKK9:45 amBangkok Suvarnabhumi

Sep 29

BKK1:20 pmBangkok Suvarnabhumi

18h 40m

1 stop

ONT6:00 pmOntario

$809

China Airlines

Aug 23

ONT12:45 amOntario

21h 25m

1 stop

BKK12:10 pmBangkok Suvarnabhumi

Aug 28

BKK10:50 amBangkok Suvarnabhumi

21h 50m

1 stop

ONT6:40 pmOntario

$812

STARLUX Airlines flights from Ontario to Thailand

Our best STARLUX Airlines deals on Ontario to Thailand flight tickets

STARLUX Airlines

Sep 28

ONT11:30 pmOntario

22h 30m

1 stop

BKK12:00 pmBangkok Suvarnabhumi

Nov 4

BKK1:45 pmBangkok Suvarnabhumi

17h 10m

1 stop

ONT3:55 pmOntario

$759

STARLUX Airlines

Aug 22

ONT11:55 pmOntario

22h 05m

1 stop

BKK12:00 pmBangkok Suvarnabhumi

Sep 5

BKK1:10 pmBangkok Suvarnabhumi

17h 55m

1 stop

ONT5:05 pmOntario

$760

STARLUX Airlines

Sep 5

ONT11:30 pmOntario

27h 10m

1 stop

BKK4:40 pmBangkok Suvarnabhumi

Sep 19

BKK1:10 pmBangkok Suvarnabhumi

17h 55m

1 stop

ONT5:05 pmOntario

$775

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Mon 9/28

11:30 pm-12:00 pm

1 stop22h 30m

Bangkok Suvarnabhumi

Wed 11/4

1:45 pm-3:55 pm

1 stop17h 10m

$759

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Wed 10/7

11:30 pm-12:00 pm

1 stop22h 30m

Bangkok Suvarnabhumi

Sun 10/25

5:40 pm-4:55 pm

1 stop37h 15m

$760

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Wed 12/30

7:00 am-9:30 pm

2 stops23h 30m

Bangkok Suvarnabhumi

Tue 1/26

12:55 am-1:57 pm

2 stops28h 02m

$778

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Wed 12/30

7:00 am-9:30 pm

2 stops23h 30m

Bangkok Suvarnabhumi

Wed 1/27

12:55 am-1:57 pm

2 stops28h 02m

$778

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Fri 9/11

12:45 am-9:45 am

1 stop19h 00m

Bangkok Suvarnabhumi

Sun 9/27

10:50 am-6:00 pm

1 stop21h 10m

$804

Quickest round-trip

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Sun 9/13

12:45 am-9:45 am

1 stop19h 00m

Bangkok Suvarnabhumi

Tue 9/29

1:20 pm-6:00 pm

1 stop18h 40m

$809

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Wed 11/4

6:00 am-10:55 pm

2 stops25h 55m

Chiang Mai

Mon 11/16

12:15 am-4:30 pm

2 stops31h 15m

$822

OntarioChiang Mai

ONT Ontario - CNX Chiang Mai

ONTCNX

Ontario

Wed 11/4

6:00 am-10:55 pm

2 stops25h 55m

Chiang Mai

Wed 11/11

12:15 am-11:00 pm

2 stops37h 45m

$822

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Sun 9/27

6:00 am-9:45 pm

2 stops25h 45m

Bangkok Suvarnabhumi

Tue 10/13

9:50 am-5:12 pm

2 stops21h 22m

$853

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Wed 11/11

7:04 am-11:20 pm

2 stops25h 16m

Bangkok Suvarnabhumi

Fri 12/4

9:40 am-4:30 pm

2 stops21h 50m

$888

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 Ontario to Thailand

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 Thailand?

The month of January is, on average, the cheapest month to fly to Thailand from Ontario, with most prices found around $765. If you are unable to visit Thailand during the month of January, then departing from Ontario during the month February is also very affordable. Most momondo users find prices during this month for around $783.

How far in advance should I book a flight from Ontario to Thailand?

You are more likely to see cheaper flights to Thailand from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Thailand for around $983 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Thailand from Ontario for as low as $765 on momondo.

Can stopping save me money on Ontario to Thailand flights?

You could potentially save up to 17% on your flight if you consider stops on a Ontario to Thailand flight.

Cheap Ontario to Thailand flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Thailand

Fastest flight time	19h 35m
Direct flights	None

The fastest flight from Ontario to Thailand takes 19h 35m

There are no direct flights from Ontario to Thailand. There are no popular flight routes from Ontario to Thailand.

Search flight deals

Frequently asked questions about flying from Ontario to Thailand

When did momondo last update prices for flights from Ontario Airport to Thailand?
Prices for flights from Ontario Airport to Thailand refresh daily.
How many operators does momondo search for flights from Ontario Airport to Thailand?
There are 4 operators available for flights from Ontario Airport to Thailand as of August 2026.
How old do you have to be to fly from Ontario Airport to Thailand?
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 Ontario Airport to Thailand.
What documentation or ID do you need to fly to Thailand?
The travel and health documents you'll need for your trip to Thailand 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 Thailand. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ontario to Thailand

Compare and see reviews for airlines that fly from Ontario to Thailand with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $427	Free Cancellation	Rating 7.8 8,503 reviews	Search Delta flights
Korean Air	PriceFrom $455	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
China Airlines	PriceFrom $718	Free Cancellation	Rating 8.3 841 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $756	Free Cancellation	Rating 8.8 371 reviews	Search STARLUX Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Thailand?

It is quick and easy to find Ontario to Thailand 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 Thailand that suits you.

Can I find flights from Ontario to Thailand with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Thailand from Ontario with this policy.

How can momondo help me find flights from Ontario to Thailand?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Thailand.

I’m not ready to book a flight from Ontario to Thailand right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Thailand now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Thailand and let you know when they change.