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

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

What airlines fly to Thailand?

Singapore Airlines, Asiana Airlines and Cathay Pacific 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 31% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 21 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.

$304 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.

7:00 am - 9:45 pm

ONT

BKK

24h 45m

2 stops

11:30 pm - 5:10 pm

BKK

ONT

31h 40m

2 stops

$586Korean Air

Mon, Apr 27 - Tue, May 12

7:00 am - 9:45 pm

ONT

BKK

24h 45m

2 stops

9:40 pm - 5:16 pm

BKK

ONT

33h 36m

2 stops

$611Delta

Thu, Sep 3 - Wed, Sep 30

5:05 pm - 11:35 pm

ONT

BKK

40h 30m

2 stops

9:40 pm - 5:15 pm

BKK

ONT

33h 35m

2 stops

$616Delta

Sun, Apr 19 - Mon, Apr 27

5:55 pm - 9:45 pm

ONT

BKK

37h 50m

2 stops

9:50 am - 10:40 pm

BKK

ONT

26h 50m

2 stops

$617Delta

Sun, Sep 6 - Wed, Sep 30

7:00 am - 9:45 pm

ONT

BKK

24h 45m

2 stops

11:30 pm - 5:16 pm

BKK

ONT

31h 46m

2 stops

$641Korean Air

Thu, Sep 3 - Sat, Sep 26

5:05 pm - 9:45 pm

ONT

BKK

38h 40m

2 stops

9:50 am - 10:40 pm

BKK

ONT

26h 50m

2 stops

$642Delta

Sat, Sep 5 - Wed, Sep 30

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

5:05 pm - 9:45 pm

ONT

BKK

38h 40m

2 stops

2:35 am - 11:14 am

BKK

ONT

46h 39m

2 stops

$648Delta

Sun, Sep 6 - Sat, Sep 26

12:45 am - 10:20 am

ONT

CNX

19h 35m

1 stop

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$768China Airlines

Mon, Aug 31 - Tue, Sep 29

12:45 am - 10:20 am

ONT

CNX

19h 35m

1 stop

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$791China Airlines

Wed, Sep 2 - Thu, Oct 1

Korean Air flights from Ontario to Thailand

Our best Korean Air deals on Ontario to Thailand flight tickets

Korean Air

Apr 27

ONT7:00 amOntario

26h 35m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

May 12

BKK11:30 pmBangkok Suvarnabhumi

31h 40m

2 stops

ONT5:10 pmOntario

$567

Korean Air

Apr 27

ONT7:00 amOntario

24h 45m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

May 12

BKK11:30 pmBangkok Suvarnabhumi

31h 40m

2 stops

ONT5:10 pmOntario

$586

Korean Air

Aug 9

ONT7:00 amOntario

26h 35m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Sep 6

BKK11:30 pmBangkok Suvarnabhumi

31h 46m

2 stops

ONT5:16 pmOntario

$641

Delta flights from Ontario to Thailand

Our best Delta deals on Ontario to Thailand flight tickets

Delta

Sep 3

ONT7:00 amOntario

24h 45m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Sep 30

BKK9:40 pmBangkok Suvarnabhumi

33h 36m

2 stops

ONT5:16 pmOntario

$611

Delta

Apr 19

ONT5:05 pmOntario

40h 30m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Apr 27

BKK9:40 pmBangkok Suvarnabhumi

33h 35m

2 stops

ONT5:15 pmOntario

$616

Delta

Sep 6

ONT5:55 pmOntario

37h 50m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Sep 30

BKK9:50 amBangkok Suvarnabhumi

26h 50m

2 stops

ONT10:40 pmOntario

$617

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 4/27

7:00 am-9:45 pm

2 stops24h 45m

Bangkok Suvarnabhumi

Tue 5/12

11:30 pm-5:10 pm

2 stops31h 40m

$586

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 9/3

7:00 am-9:45 pm

2 stops24h 45m

Bangkok Suvarnabhumi

Wed 9/30

9:40 pm-5:16 pm

2 stops33h 36m

$611

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 4/19

5:05 pm-11:35 pm

2 stops40h 30m

Bangkok Suvarnabhumi

Mon 4/27

9:40 pm-5:15 pm

2 stops33h 35m

$616

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 9/6

5:55 pm-9:45 pm

2 stops37h 50m

Bangkok Suvarnabhumi

Wed 9/30

9:50 am-10:40 pm

2 stops26h 50m

$617

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 9/3

7:00 am-9:45 pm

2 stops24h 45m

Bangkok Suvarnabhumi

Sat 9/26

11:30 pm-5:16 pm

2 stops31h 46m

$641

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 9/5

5:05 pm-9:45 pm

2 stops38h 40m

Bangkok Suvarnabhumi

Wed 9/30

9:50 am-10:40 pm

2 stops26h 50m

$642

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 9/6

5:05 pm-9:45 pm

2 stops38h 40m

Bangkok Suvarnabhumi

Sat 9/26

2:35 am-11:14 am

2 stops46h 39m

$648

Quickest round-trip

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Mon 8/31

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

Tue 9/29

11:20 am-6:00 pm

1 stop20h 40m

$768

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 9/2

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

Thu 10/1

11:20 am-6:00 pm

1 stop20h 40m

$791

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 8,276 reviews	Search Delta flights
Korean Air	PriceFrom $616	Free Cancellation	Rating 8.4 1,202 reviews	Search Korean Air flights
China Airlines	PriceFrom $718	Free Cancellation	Rating 8.3 811 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.