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

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

What airlines fly to Thailand?

Singapore Airlines, Asiana Airlines and China 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.

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 September 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.

$392 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.

9:45 pm - 4:30 pmONT Ontario-BKK Bangkok Suvarnabhumi

27h 45m1 stop Taipei City Taiwan Taoyuan Intl

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

17h 10m1 stop Taipei City Taiwan Taoyuan Intl

$763STARLUX Airlines

Mon, Jan 18 - Fri, Jan 29

9:45 pm - 4:30 pmONT Ontario-BKK Bangkok Suvarnabhumi

27h 45m1 stop Taipei City Taiwan Taoyuan Intl

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

17h 10m1 stop Taipei City Taiwan Taoyuan Intl

$778STARLUX Airlines

Sat, Jan 30 - Mon, Feb 8

12:10 am - 4:20 pmONT Ontario-BKK Bangkok Suvarnabhumi

26h 10m1 stop Taipei City Taiwan Taoyuan Intl

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

18h 40m1 stop Taipei City Taiwan Taoyuan Intl

$797China Airlines

Sun, Sep 20 - Thu, Sep 24

12:10 am - 9:45 amONT Ontario-BKK Bangkok Suvarnabhumi

19h 35m1 stop Taipei City Taiwan Taoyuan Intl

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

18h 40m1 stop Taipei City Taiwan Taoyuan Intl

$803China Airlines

Tue, Sep 22 - Wed, Oct 7

6:00 am - 11:35 pmONT Ontario-BKK Bangkok Suvarnabhumi

27h 35m2 stops Seattle/Tacoma Intl Incheon Intl

11:30 pm - 5:12 pmBKK Bangkok Suvarnabhumi-ONT Ontario

55h 42m2 stops Incheon Intl Seattle/Tacoma Intl

$812Korean Air

Sun, Sep 27 - Sun, Oct 11

7:00 am - 1:25 pmONT Ontario-BKK Bangkok Suvarnabhumi

39h 25m2 stops Seattle/Tacoma Intl Incheon Intl

12:55 am - 11:48 pmBKK Bangkok Suvarnabhumi-ONT Ontario

37h 53m2 stops Incheon Intl Salt Lake City

$822Delta

Fri, Jan 29 - Thu, Feb 11

7:00 am - 11:20 pmONT Ontario-BKK Bangkok Suvarnabhumi

25h 20m2 stops Seattle/Tacoma Intl Incheon Intl

9:30 pm - 11:48 pmBKK Bangkok Suvarnabhumi-ONT Ontario

41h 18m2 stops Incheon Intl Salt Lake City

$822Delta

Tue, Jan 26 - Thu, Feb 11

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

25h 45m2 stops Seattle/Tacoma Intl Incheon Intl

1:05 am - 5:15 pmBKK Bangkok Suvarnabhumi-ONT Ontario

31h 10m2 stops Incheon Intl Seattle/Tacoma Intl

$825Korean Air

Sun, Sep 20 - Tue, Dec 8

6:00 am - 5:10 amONT Ontario-BKK Bangkok Suvarnabhumi

32h 10m2 stops San Francisco Tokyo Haneda

9:10 am - 11:06 pmBKK Bangkok Suvarnabhumi-ONT Ontario

28h 56m2 stops Tokyo Haneda San Francisco

$858United Airlines

Thu, Jan 28 - Thu, Feb 11

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

48h 39m2 stops San Francisco Tokyo Haneda

9:35 am - 3:22 pmBKK Bangkok Suvarnabhumi-ONT Ontario

43h 47m2 stops Tokyo Haneda San Francisco

$858United Airlines

Sat, Sep 19 - Sun, Oct 11

Cheap last minute flights

Enter your travel dates to find the best prices.

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

19h 00m1 stop Taipei City Taiwan Taoyuan Intl

2:05 pm - 5:05 pmBKK Bangkok Suvarnabhumi-ONT Ontario

18h 00m1 stop Taipei City Taiwan Taoyuan Intl

$819China Airlines

Thu, Sep 10 - Wed, Nov 11

6:00 am - 1:05 amONT Ontario-BKK Bangkok Suvarnabhumi

29h 05m2 stops Seattle/Tacoma Intl Incheon Intl

2:35 am - 11:47 pmBKK Bangkok Suvarnabhumi-ONT Ontario

35h 12m2 stops Incheon Intl Salt Lake City

$822Delta

Sat, Sep 12 - Mon, Sep 21

6:00 am - 1:05 amONT Ontario-BKK Bangkok Suvarnabhumi

29h 05m2 stops Salt Lake City Incheon Intl

9:50 am - 10:40 pmBKK Bangkok Suvarnabhumi-ONT Ontario

26h 50m2 stops Incheon Intl Seattle/Tacoma Intl

$823Delta

Sat, Sep 12 - Tue, Sep 29

6:00 am - 1:05 amONT Ontario-BKK Bangkok Suvarnabhumi

29h 05m2 stops Seattle/Tacoma Intl Incheon Intl

2:35 am - 10:40 pmBKK Bangkok Suvarnabhumi-ONT Ontario

34h 05m2 stops Incheon Intl Seattle/Tacoma Intl

$828Korean Air

Sat, Sep 12 - Sat, Sep 26

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

25h 45m2 stops Seattle/Tacoma Intl Incheon Intl

2:35 am - 10:40 pmBKK Bangkok Suvarnabhumi-ONT Ontario

34h 05m2 stops Incheon Intl Seattle/Tacoma Intl

$828Korean Air

Sun, Sep 13 - Sat, Sep 26

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

$832China Airlines

Sun, Sep 13 - Fri, Sep 18

8:00 am - 11:55 pmONT Ontario-BKK Bangkok Suvarnabhumi

25h 55m2 stops San Francisco Tokyo Narita

7:10 am - 12:29 pmBKK Bangkok Suvarnabhumi-ONT Ontario

20h 19m2 stops Tokyo Narita San Francisco

$863United Airlines

Sat, Sep 12 - Wed, Nov 11

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

48h 39m2 stops San Francisco Tokyo Haneda

3:45 pm - 3:22 pmBKK Bangkok Suvarnabhumi-ONT Ontario

37h 37m2 stops Hong Kong Intl San Francisco

$876United Airlines

Sat, Sep 12 - Mon, Sep 28

7:59 pm - 12:00 pmONT Ontario-BKK Bangkok Suvarnabhumi

26h 01m2 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl

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

17h 55m1 stop Taipei City Taiwan Taoyuan Intl

$1,057STARLUX Airlines

Mon, Sep 14 - Mon, Sep 21

3:14 pm - 12:00 pmONT Ontario-BKK Bangkok Suvarnabhumi

30h 46m2 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl

5:50 pm - 5:05 pmBKK Bangkok Suvarnabhumi-ONT Ontario

37h 15m1 stop Taipei City Taiwan Taoyuan Intl

$1,057STARLUX Airlines

Fri, Sep 11 - Sun, Sep 13

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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 20

ONT12:10 amOntario

26h 10m

1 stop

BKK4:20 pmBangkok Suvarnabhumi

Sep 24

BKK1:20 pmBangkok Suvarnabhumi

18h 40m

1 stop

ONT6:00 pmOntario

$797

China Airlines

Sep 22

ONT12:10 amOntario

19h 35m

1 stop

BKK9:45 amBangkok Suvarnabhumi

Oct 7

BKK1:20 pmBangkok Suvarnabhumi

18h 40m

1 stop

ONT6:00 pmOntario

$803

China Airlines

Sep 21

ONT12:10 amOntario

19h 35m

1 stop

BKK9:45 amBangkok Suvarnabhumi

Sep 26

BKK10:50 amBangkok Suvarnabhumi

21h 10m

1 stop

ONT6:00 pmOntario

$805

Delta flights from Ontario to Thailand

Our best Delta deals on Ontario to Thailand flight tickets

Delta

Sep 12

ONT6:00 amOntario

29h 05m

2 stops

BKK1:05 amBangkok Suvarnabhumi

Sep 21

BKK2:35 amBangkok Suvarnabhumi

35h 12m

2 stops

ONT11:47 pmOntario

$822

Delta

Nov 11

ONT6:00 amOntario

24h 30m

2 stops

BKK9:30 pmBangkok Suvarnabhumi

Nov 24

BKK9:50 amBangkok Suvarnabhumi

22h 29m

2 stops

ONT5:19 pmOntario

$823

Delta

Oct 31

ONT1:35 pmOntario

44h 45m

2 stops

BKK12:20 amBangkok Suvarnabhumi

Nov 8

BKK1:05 amBangkok Suvarnabhumi

36h 55m

2 stops

ONT11:00 pmOntario

$829

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Mon 1/18

9:45 pm-4:30 pm

1 stop27h 45m

Bangkok Suvarnabhumi

Fri 1/29

1:45 pm-3:55 pm

1 stop17h 10m

$763

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Sat 1/30

9:45 pm-4:30 pm

1 stop27h 45m

Bangkok Suvarnabhumi

Mon 2/8

1:45 pm-3:55 pm

1 stop17h 10m

$778

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Sun 9/20

12:10 am-4:20 pm

1 stop26h 10m

Bangkok Suvarnabhumi

Thu 9/24

1:20 pm-6:00 pm

1 stop18h 40m

$797

Quickest round-trip

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Tue 9/22

12:10 am-9:45 am

1 stop19h 35m

Bangkok Suvarnabhumi

Wed 10/7

1:20 pm-6:00 pm

1 stop18h 40m

$803

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Sun 9/27

6:00 am-11:35 pm

2 stops27h 35m

Bangkok Suvarnabhumi

Sun 10/11

11:30 pm-5:12 pm

2 stops55h 42m

$812

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Fri 1/29

7:00 am-1:25 pm

2 stops39h 25m

Bangkok Suvarnabhumi

Thu 2/11

12:55 am-11:48 pm

2 stops37h 53m

$822

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Tue 1/26

7:00 am-11:20 pm

2 stops25h 20m

Bangkok Suvarnabhumi

Thu 2/11

9:30 pm-11:48 pm

2 stops41h 18m

$822

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Sun 9/20

6:00 am-9:45 pm

2 stops25h 45m

Bangkok Suvarnabhumi

Tue 12/8

1:05 am-5:15 pm

2 stops31h 10m

$825

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Thu 1/28

6:00 am-5:10 am

2 stops32h 10m

Bangkok Suvarnabhumi

Thu 2/11

9:10 am-11:06 pm

2 stops28h 56m

$858

OntarioBangkok

ONT Ontario - BKK Bangkok Suvarnabhumi

ONTBKK

Ontario

Sat 9/19

1:56 pm-4:35 am

2 stops48h 39m

Bangkok Suvarnabhumi

Sun 10/11

9:35 am-3:22 pm

2 stops43h 47m

$858

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 March is also very affordable. Most momondo users find prices during this month for around $789.

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 $994 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 $795 on momondo.

Can stopping save me money on Ontario to Thailand flights?

You could potentially save up to 28% 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

Best Price Found	$392
Fastest flight time	20h 00m
Direct flights	None

The best one-way flight to Thailand from Ontario in the past 72 hours is $392. The best round-trip flight deal from Ontario to Thailand found on momondo in the last 72 hours is $763.

The fastest flight from Ontario to Thailand takes 20h 00m

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 September 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 8,553 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 8.3 844 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $731	Free Cancellation	Rating 8.7 378 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.