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

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

What airlines fly to Thailand?

China Airlines, STARLUX Airlines and Korean Air are the top three most popular airlines that fly to Thailand from Ontario according to our data. China Airlines is the first choice among our users, with 81% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 5 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 March 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.

$321 Cheap Flights from Ontario to Thailand in 2026

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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.

6:00 am - 11:35 pm

ONT

BKK

27h 35m

2 stops

9:50 am - 11:44 pm

BKK

ONT

27h 54m

2 stops

$623Delta

Mon, Aug 10 - Thu, Sep 10

7:00 am - 9:45 pm

ONT

BKK

24h 45m

2 stops

9:50 am - 5:15 pm

BKK

ONT

45h 25m

2 stops

$631Korean Air

Mon, Apr 20 - Sun, May 3

7:00 am - 9:45 pm

ONT

BKK

24h 45m

2 stops

9:40 pm - 5:15 pm

BKK

ONT

33h 35m

2 stops

$643Korean Air

Mon, Apr 20 - Mon, Apr 27

7:00 am - 11:35 pm

ONT

BKK

26h 35m

2 stops

11:30 pm - 5:10 pm

BKK

ONT

31h 40m

2 stops

$659Korean Air

Sun, Apr 26 - Sat, May 9

7:00 am - 11:35 pm

ONT

BKK

26h 35m

2 stops

9:40 pm - 5:15 pm

BKK

ONT

33h 35m

2 stops

$660Korean Air

Sun, Apr 19 - Sun, May 3

7:00 am - 11:35 pm

ONT

BKK

26h 35m

2 stops

9:50 am - 5:10 pm

BKK

ONT

21h 20m

2 stops

$661Delta

Tue, Apr 21 - Wed, May 13

7:00 am - 9:45 pm

ONT

BKK

24h 45m

2 stops

2:35 am - 5:16 pm

BKK

ONT

28h 41m

2 stops

$664Korean Air

Tue, Aug 25 - Sun, Sep 6

7:00 am - 11:35 pm

ONT

BKK

26h 35m

2 stops

9:50 am - 5:10 pm

BKK

ONT

21h 20m

2 stops

$666Delta

Tue, Apr 21 - Fri, May 8

12:10 am - 10:20 am

ONT

CNX

20h 10m

1 stop

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$794China Airlines

Tue, May 12 - Sun, May 24

12:45 am - 10:20 am

ONT

CNX

19h 35m

1 stop

11:20 am - 6:40 pm

CNX

ONT

21h 20m

1 stop

$811China Airlines

Sat, Aug 15 - Sun, Aug 30

China Airlines flights from Ontario to Thailand

Our best China Airlines deals on Ontario to Thailand flight tickets

China Airlines

May 2

ONT12:10 amOntario

19h 35m

1 stop

BKK9:45 amBangkok Suvarnabhumi

May 12

BKK1:20 pmBangkok Suvarnabhumi

18h 40m

1 stop

ONT6:00 pmOntario

$728

China Airlines

May 3

ONT12:10 amOntario

22h 00m

1 stop

BKK12:10 pmBangkok Suvarnabhumi

May 13

BKK2:40 amBangkok Suvarnabhumi

29h 20m

1 stop

ONT6:00 pmOntario

$735

China Airlines

May 3

ONT12:10 amOntario

26h 10m

1 stop

BKK4:20 pmBangkok Suvarnabhumi

Nov 11

BKK2:05 pmBangkok Suvarnabhumi

17h 45m

1 stop

ONT4:50 pmOntario

$736

Korean Air flights from Ontario to Thailand

Our best Korean Air deals on Ontario to Thailand flight tickets

Korean Air

Apr 20

ONT7:00 amOntario

24h 45m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Apr 27

BKK9:40 pmBangkok Suvarnabhumi

33h 35m

2 stops

ONT5:15 pmOntario

$643

Korean Air

Apr 26

ONT7:00 amOntario

26h 35m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

May 9

BKK11:30 pmBangkok Suvarnabhumi

31h 40m

2 stops

ONT5:10 pmOntario

$659

Korean Air

Apr 19

ONT7:00 amOntario

26h 35m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

May 3

BKK9:40 pmBangkok Suvarnabhumi

33h 35m

2 stops

ONT5:15 pmOntario

$660

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/10

6:00 am-11:35 pm

2 stops27h 35m

Bangkok Suvarnabhumi

Thu 9/10

9:50 am-11:44 pm

2 stops27h 54m

$623

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 4/20

7:00 am-9:45 pm

2 stops24h 45m

Bangkok Suvarnabhumi

Sun 5/3

9:50 am-5:15 pm

2 stops45h 25m

$631

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 4/20

7:00 am-9:45 pm

2 stops24h 45m

Bangkok Suvarnabhumi

Mon 4/27

9:40 pm-5:15 pm

2 stops33h 35m

$643

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 4/26

7:00 am-11:35 pm

2 stops26h 35m

Bangkok Suvarnabhumi

Sat 5/9

11:30 pm-5:10 pm

2 stops31h 40m

$659

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 4/19

7:00 am-11:35 pm

2 stops26h 35m

Bangkok Suvarnabhumi

Sun 5/3

9:40 pm-5:15 pm

2 stops33h 35m

$660

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 4/21

7:00 am-11:35 pm

2 stops26h 35m

Bangkok Suvarnabhumi

Wed 5/13

9:50 am-5:10 pm

2 stops21h 20m

$661

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 8/25

7:00 am-9:45 pm

2 stops24h 45m

Bangkok Suvarnabhumi

Sun 9/6

2:35 am-5:16 pm

2 stops28h 41m

$664

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 4/21

7:00 am-11:35 pm

2 stops26h 35m

Bangkok Suvarnabhumi

Fri 5/8

9:50 am-5:10 pm

2 stops21h 20m

$666

Quickest round-trip

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Tue 5/12

12:10 am-10:20 am

1 stop20h 10m

Chiang Mai

Sun 5/24

11:20 am-6:00 pm

1 stop20h 40m

$794

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sat 8/15

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

Sun 8/30

11:20 am-6:40 pm

1 stop21h 20m

$811

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 $764. 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 $786.

How far in advance should I book a flight 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 $950 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 $802 on momondo.

Can stopping save me money on Ontario to Thailand flights?

You could potentially save up to 14% 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	22h 00m
Direct flights	None

The fastest flight from Ontario to Thailand takes 22h 00m

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

Search flight deals

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 March 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 $457	Free Cancellation	Rating 7.9 8,270 reviews	Search Delta flights
Korean Air	PriceFrom $616	Free Cancellation	Rating 8.4 1,200 reviews	Search Korean Air flights
China Airlines	PriceFrom $718	Free Cancellation	Rating 8.3 809 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $763	Free Cancellation	Rating 8.9 279 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.