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

Korean Air, Delta, and China Airlines 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 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 April 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.

$423 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

9:40 pm - 5:10 pm

BKK

ONT

33h 30m

2 stops

$754Korean Air

Mon, Apr 27 - Mon, May 11

7:00 am - 11:35 pm

ONT

BKK

26h 35m

2 stops

9:40 pm - 5:16 pm

BKK

ONT

33h 36m

2 stops

$765Korean Air

Sat, Sep 12 - Sun, Sep 20

12:45 am - 12:10 pm

ONT

BKK

21h 25m

1 stop

10:50 am - 6:00 pm

BKK

ONT

21h 10m

1 stop

$777China Airlines

Mon, Aug 31 - Tue, Sep 22

12:10 am - 4:20 pm

ONT

BKK

26h 10m

1 stop

1:20 pm - 6:00 pm

BKK

ONT

18h 40m

1 stop

$778China Airlines

Tue, Sep 15 - Wed, Sep 30

12:10 am - 9:45 am

ONT

BKK

19h 35m

1 stop

1:20 pm - 6:00 pm

BKK

ONT

18h 40m

1 stop

$781China Airlines

Mon, Sep 21 - Tue, Oct 6

12:10 am - 9:45 am

ONT

BKK

19h 35m

1 stop

10:50 am - 6:00 pm

BKK

ONT

21h 10m

1 stop

$785China Airlines

Fri, Sep 18 - Wed, Sep 30

6:00 am - 1:35 pm

ONT

BKK

41h 35m

2 stops

9:40 pm - 5:10 pm

BKK

ONT

33h 30m

2 stops

$789Delta

Fri, May 1 - Thu, May 14

7:00 am - 10:10 pm

ONT

HKT

25h 10m

2 stops

11:25 pm - 5:10 pm

HKT

ONT

31h 45m

2 stops

$889Delta

Sat, May 2 - Thu, May 7

12:10 am - 1:45 pm

ONT

CNX

23h 35m

2 stops

11:20 am - 6:00 pm

CNX

ONT

20h 40m

1 stop

$943Multiple Airlines

Wed, May 6 - Thu, Jun 4

12:10 am - 3:00 pm

ONT

HKT

24h 50m

2 stops

7:35 pm - 6:00 pm

HKT

ONT

36h 25m

2 stops

$948Multiple Airlines

Fri, May 8 - Mon, May 18

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

24h 45m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

May 11

BKK9:40 pmBangkok Suvarnabhumi

33h 30m

2 stops

ONT5:10 pmOntario

$754

Korean Air

Sep 12

ONT7:00 amOntario

26h 35m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Sep 20

BKK9:40 pmBangkok Suvarnabhumi

33h 36m

2 stops

ONT5:16 pmOntario

$765

Korean Air

Apr 27

ONT7:00 amOntario

24h 45m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

May 11

BKK9:40 pmBangkok Suvarnabhumi

33h 30m

2 stops

ONT5:10 pmOntario

$786

China Airlines flights from Ontario to Thailand

Our best China Airlines deals on Ontario to Thailand flight tickets

China Airlines

Aug 31

ONT12:45 amOntario

21h 25m

1 stop

BKK12:10 pmBangkok Suvarnabhumi

Sep 22

BKK10:50 amBangkok Suvarnabhumi

21h 10m

1 stop

ONT6:00 pmOntario

$777

China Airlines

Sep 15

ONT12:10 amOntario

26h 10m

1 stop

BKK4:20 pmBangkok Suvarnabhumi

Sep 30

BKK1:20 pmBangkok Suvarnabhumi

18h 40m

1 stop

ONT6:00 pmOntario

$778

China Airlines

Sep 21

ONT12:10 amOntario

19h 35m

1 stop

BKK9:45 amBangkok Suvarnabhumi

Oct 6

BKK1:20 pmBangkok Suvarnabhumi

18h 40m

1 stop

ONT6:00 pmOntario

$781

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

Mon 5/11

9:40 pm-5:10 pm

2 stops33h 30m

$754

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 9/12

7:00 am-11:35 pm

2 stops26h 35m

Bangkok Suvarnabhumi

Sun 9/20

9:40 pm-5:16 pm

2 stops33h 36m

$765

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/31

12:45 am-12:10 pm

1 stop21h 25m

Bangkok Suvarnabhumi

Tue 9/22

10:50 am-6:00 pm

1 stop21h 10m

$777

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 9/15

12:10 am-4:20 pm

1 stop26h 10m

Bangkok Suvarnabhumi

Wed 9/30

1:20 pm-6:00 pm

1 stop18h 40m

$778

Quickest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 9/21

12:10 am-9:45 am

1 stop19h 35m

Bangkok Suvarnabhumi

Tue 10/6

1:20 pm-6:00 pm

1 stop18h 40m

$781

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Fri 9/18

12:10 am-9:45 am

1 stop19h 35m

Bangkok Suvarnabhumi

Wed 9/30

10:50 am-6:00 pm

1 stop21h 10m

$785

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Fri 5/1

6:00 am-1:35 pm

2 stops41h 35m

Bangkok Suvarnabhumi

Thu 5/14

9:40 pm-5:10 pm

2 stops33h 30m

$789

OntarioPhuket City

ONT - HKT

ONTHKT

Ontario

Sat 5/2

7:00 am-10:10 pm

2 stops25h 10m

Phuket City

Thu 5/7

11:25 pm-5:10 pm

2 stops31h 45m

$889

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 5/6

12:10 am-1:45 pm

2 stops23h 35m

Chiang Mai

Thu 6/4

11:20 am-6:00 pm

1 stop20h 40m

$943

OntarioPhuket City

ONT - HKT

ONTHKT

Ontario

Fri 5/8

12:10 am-3:00 pm

2 stops24h 50m

Phuket City

Mon 5/18

7:35 pm-6:00 pm

2 stops36h 25m

$948

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 February is also very affordable. Most momondo users find prices during this month for around $788.

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 $951 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 3% 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 April 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 8,372 reviews	Search Delta flights
Korean Air	PriceFrom $616	Free Cancellation	Rating 8.4 1,203 reviews	Search Korean Air flights
China Airlines	PriceFrom $718	Free Cancellation	Rating 8.3 815 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $763	Free Cancellation	Rating 9.0 293 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.