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 30% 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 3 operators available for flights from Ontario Airport to Thailand as of December 2025.

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.

$313 Cheap Flights from Ontario to Thailand in 2025/26

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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 - 10:55 pm

ONT

CNX

26h 55m2 stops

12:15 am - 5:12 pm

CNX

ONT

30h 57m2 stops

$623Korean Air

Mon, Mar 9 - Wed, Mar 11

10:50 pm - 9:50 am

ONT

BKK

20h 00m1 stop

10:55 am - 4:50 pm

BKK

ONT

20h 55m1 stop

$718China Airlines

Mon, Jan 12 - Fri, Jan 23

6:00 am - 10:10 pm

ONT

HKT

26h 10m2 stops

11:40 pm - 10:34 pm

HKT

ONT

36h 54m2 stops

$719Korean Air

Sun, Mar 15 - Mon, Mar 23

6:54 pm - 4:35 am

ONT

BKK

43h 41m2 stops

9:35 am - 11:06 pm

BKK

ONT

27h 31m2 stops

$723United Airlines

Tue, May 5 - Tue, Jun 2

10:50 pm - 1:05 pm

ONT

BKK

23h 15m1 stop

5:50 pm - 4:50 pm

BKK

ONT

38h 00m1 stop

$725China Airlines

Sun, Jan 11 - Mon, Jan 19

6:00 am - 5:10 am

ONT

BKK

32h 10m2 stops

7:00 am - 11:06 pm

BKK

ONT

30h 06m2 stops

$726United Airlines

Sun, Jan 25 - Sat, May 23

10:50 pm - 9:50 am

ONT

BKK

20h 00m1 stop

2:35 am - 5:50 pm

BKK

ONT

29h 15m1 stop

$728China Airlines

Mon, Feb 23 - Fri, Mar 20

6:00 am - 9:30 pm

ONT

BKK

24h 30m2 stops

9:40 am - 10:34 pm

BKK

ONT

26h 54m2 stops

$731Delta

Mon, Mar 2 - Mon, Mar 16

9:45 pm - 4:30 pm

ONT

BKK

27h 45m1 stop

1:45 pm - 3:50 pm

BKK

ONT

17h 05m1 stop

$732STARLUX Airlines

Mon, Jan 12 - Wed, Jan 21

7:30 am - 12:45 am

ONT

BKK

26h 15m2 stops

9:40 am - 10:44 pm

BKK

ONT

28h 04m2 stops

$733Delta

Wed, Jan 21 - Mon, Feb 2

United Airlines flights from Ontario to Thailand

Our best United Airlines deals on Ontario to Thailand flight tickets

United Airlines

May 5

ONT6:54 pmOntario

43h 41m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Jun 2

BKK9:35 amBangkok Suvarnabhumi

27h 31m

2 stops

ONT11:06 pmOntario

$723

Find similar

United Airlines

Jan 25

ONT6:00 amOntario

32h 10m

2 stops

BKK5:10 amBangkok Suvarnabhumi

May 23

BKK7:00 amBangkok Suvarnabhumi

30h 06m

2 stops

ONT11:06 pmOntario

$726

Find similar

United Airlines

Apr 30

ONT6:00 amOntario

27h 55m

2 stops

BKK11:55 pmBangkok Suvarnabhumi

May 26

BKK7:00 amBangkok Suvarnabhumi

24h 47m

2 stops

ONT5:47 pmOntario

$729

Find similar

STARLUX Airlines flights from Ontario to Thailand

Our best STARLUX Airlines deals on Ontario to Thailand flight tickets

STARLUX Airlines

Jan 12

ONT9:45 pmOntario

27h 45m

1 stop

BKK4:30 pmBangkok Suvarnabhumi

Jan 21

BKK1:45 pmBangkok Suvarnabhumi

17h 05m

1 stop

ONT3:50 pmOntario

$732

Find similar

STARLUX Airlines

May 2

ONT11:10 pmOntario

22h 50m

1 stop

BKK12:00 pmBangkok Suvarnabhumi

Aug 22

BKK1:10 pmBangkok Suvarnabhumi

18h 30m

1 stop

ONT5:40 pmOntario

$760

Find similar

STARLUX Airlines

Jan 10

ONT9:45 pmOntario

27h 45m

1 stop

BKK4:30 pmBangkok Suvarnabhumi

Mar 15

BKK5:40 pmBangkok Suvarnabhumi

37h 10m

1 stop

ONT4:50 pmOntario

$774

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Mon 3/9

6:00 am-10:55 pm

2 stops26h 55m

Chiang Mai

Wed 3/11

12:15 am-5:12 pm

2 stops30h 57m

$623

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 1/12

10:50 pm-9:50 am

1 stop20h 00m

Bangkok Suvarnabhumi

Fri 1/23

10:55 am-4:50 pm

1 stop20h 55m

$718

OntarioPhuket City

ONT - HKT

ONTHKT

Ontario

Sun 3/15

6:00 am-10:10 pm

2 stops26h 10m

Phuket City

Mon 3/23

11:40 pm-10:34 pm

2 stops36h 54m

$719

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 5/5

6:54 pm-4:35 am

2 stops43h 41m

Bangkok Suvarnabhumi

Tue 6/2

9:35 am-11:06 pm

2 stops27h 31m

$723

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 1/11

10:50 pm-1:05 pm

1 stop23h 15m

Bangkok Suvarnabhumi

Mon 1/19

5:50 pm-4:50 pm

1 stop38h 00m

$725

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 1/25

6:00 am-5:10 am

2 stops32h 10m

Bangkok Suvarnabhumi

Sat 5/23

7:00 am-11:06 pm

2 stops30h 06m

$726

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 2/23

10:50 pm-9:50 am

1 stop20h 00m

Bangkok Suvarnabhumi

Fri 3/20

2:35 am-5:50 pm

1 stop29h 15m

$728

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 3/2

6:00 am-9:30 pm

2 stops24h 30m

Bangkok Suvarnabhumi

Mon 3/16

9:40 am-10:34 pm

2 stops26h 54m

$731

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 1/12

9:45 pm-4:30 pm

1 stop27h 45m

Bangkok Suvarnabhumi

Wed 1/21

1:45 pm-3:50 pm

1 stop17h 05m

$732

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 1/21

7:30 am-12:45 am

2 stops26h 15m

Bangkok Suvarnabhumi

Mon 2/2

9:40 am-10:44 pm

2 stops28h 04m

$733

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 October is, on average, the cheapest month to fly to Thailand from Ontario, with most prices found around $808. If you are unable to visit Thailand during the month of October, then departing from Ontario during the month September is also very affordable. Most momondo users find prices during this month for around $824.

What is the cheapest day to depart on your flight to Thailand?

The cheapest day to depart on your flight to Thailand is on a Wednesday when prices can be found for as low as $884. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Thailand is Friday, with ticket prices averaging around $1,065.

What is the cheapest time of day to depart on your flight to Thailand?

Flying to Thailand from Ontario in the morning is the least expensive time of day to depart. momondo users have found prices as low as $911 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to Thailand is in the afternoon when prices are around $1,279.

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 $995 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 $826 on momondo.

Can stopping save me money on Ontario to Thailand flights?

You could potentially save up to 1% 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	20h 00m
Direct flights	None

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

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 3 operators available for flights from Ontario Airport to Thailand as of December 2025.
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
Korean Air	PriceFrom $637	Free Cancellation	Rating 8.4 1,184 reviews	Search Korean Air flights
China Airlines	PriceFrom $727	Free Cancellation	Rating 8.2 788 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $781	Free Cancellation	Rating 8.9 243 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.