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

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 32% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 22 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 June 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.

$409 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.

6:20 am - 11:20 pm

ONT

BKK

27h 00m

2 stops

11:15 pm - 5:17 pm

BKK

ONT

33h 02m

2 stops

$827Korean Air

Sat, Oct 31 - Tue, Nov 10

6:20 am - 9:45 pm

ONT

BKK

25h 25m

2 stops

9:40 pm - 5:21 pm

BKK

ONT

33h 41m

2 stops

$829Korean Air

Mon, Aug 10 - Tue, Aug 25

7:00 am - 9:30 pm

ONT

BKK

24h 30m

2 stops

9:30 pm - 5:17 pm

BKK

ONT

34h 47m

2 stops

$830Korean Air

Sat, Oct 31 - Tue, Nov 10

6:20 am - 9:45 pm

ONT

BKK

25h 25m

2 stops

2:35 am - 10:04 pm

BKK

ONT

33h 29m

2 stops

$838Delta

Tue, Sep 1 - Tue, Sep 8

6:00 am - 9:30 pm

ONT

BKK

24h 30m

2 stops

9:40 am - 5:17 pm

BKK

ONT

22h 37m

2 stops

$839Delta

Tue, Nov 3 - Tue, Nov 10

7:00 am - 9:30 pm

ONT

BKK

23h 30m

2 stops

11:15 pm - 4:56 pm

BKK

ONT

32h 41m

2 stops

$844Korean Air

Mon, Dec 7 - Wed, Dec 23

12:45 am - 10:20 am

ONT

CNX

19h 35m

1 stop

11:20 am - 6:40 pm

CNX

ONT

21h 20m

1 stop

$1,040China Airlines

Sun, Aug 23 - Mon, Sep 14

12:45 am - 10:20 am

ONT

CNX

19h 35m

1 stop

11:20 am - 6:40 pm

CNX

ONT

21h 20m

1 stop

$1,041China Airlines

Sun, Aug 23 - Mon, Sep 14

12:45 am - 7:30 pm

ONT

DMK

28h 45m

1 stop

6:15 am - 6:40 pm

DMK

ONT

26h 25m

1 stop

$1,102Multiple Airlines

Sun, Aug 2 - Fri, Aug 14

12:45 am - 7:30 pm

ONT

DMK

28h 45m

1 stop

9:40 am - 6:40 pm

DMK

ONT

23h 00m

1 stop

$1,113Multiple Airlines

Sun, Aug 2 - Sun, Aug 16

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United Airlines flights from Ontario to Thailand

Our best United Airlines deals on Ontario to Thailand flight tickets

United Airlines

Aug 19

ONT6:08 amOntario

32h 27m

2 stops

BKK4:35 amBangkok Suvarnabhumi

Sep 16

BKK9:35 amBangkok Suvarnabhumi

24h 26m

2 stops

ONT8:01 pmOntario

$946

United Airlines

Aug 25

ONT6:08 amOntario

27h 47m

2 stops

BKK11:55 pmBangkok Suvarnabhumi

Sep 1

BKK9:35 amBangkok Suvarnabhumi

24h 26m

2 stops

ONT8:01 pmOntario

$948

United Airlines

Aug 17

ONT9:01 amOntario

24h 54m

2 stops

BKK11:55 pmBangkok Suvarnabhumi

Aug 25

BKK7:00 amBangkok Suvarnabhumi

25h 11m

2 stops

ONT6:11 pmOntario

$949

Delta flights from Ontario to Thailand

Our best Delta deals on Ontario to Thailand flight tickets

Delta

Sep 1

ONT6:20 amOntario

25h 25m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Sep 8

BKK2:35 amBangkok Suvarnabhumi

33h 29m

2 stops

ONT10:04 pmOntario

$838

Delta

Nov 3

ONT6:00 amOntario

24h 30m

2 stops

BKK9:30 pmBangkok Suvarnabhumi

Nov 10

BKK9:40 amBangkok Suvarnabhumi

22h 37m

2 stops

ONT5:17 pmOntario

$839

Delta

Aug 16

ONT9:43 amOntario

46h 02m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Aug 26

BKK2:35 amBangkok Suvarnabhumi

34h 59m

2 stops

ONT11:34 pmOntario

$845

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 10/31

6:20 am-11:20 pm

2 stops27h 00m

Bangkok Suvarnabhumi

Tue 11/10

11:15 pm-5:17 pm

2 stops33h 02m

$827

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/10

6:20 am-9:45 pm

2 stops25h 25m

Bangkok Suvarnabhumi

Tue 8/25

9:40 pm-5:21 pm

2 stops33h 41m

$829

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 10/31

7:00 am-9:30 pm

2 stops24h 30m

Bangkok Suvarnabhumi

Tue 11/10

9:30 pm-5:17 pm

2 stops34h 47m

$830

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 9/1

6:20 am-9:45 pm

2 stops25h 25m

Bangkok Suvarnabhumi

Tue 9/8

2:35 am-10:04 pm

2 stops33h 29m

$838

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 11/3

6:00 am-9:30 pm

2 stops24h 30m

Bangkok Suvarnabhumi

Tue 11/10

9:40 am-5:17 pm

2 stops22h 37m

$839

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 12/7

7:00 am-9:30 pm

2 stops23h 30m

Bangkok Suvarnabhumi

Wed 12/23

11:15 pm-4:56 pm

2 stops32h 41m

$844

Quickest round-trip

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sun 8/23

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

Mon 9/14

11:20 am-6:40 pm

1 stop21h 20m

$1,040

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Sun 8/23

12:45 am-10:20 am

1 stop19h 35m

Chiang Mai

Mon 9/14

11:20 am-6:40 pm

1 stop21h 20m

$1,041

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Sun 8/2

12:45 am-7:30 pm

1 stop28h 45m

Bangkok Don Mueang Intl

Fri 8/14

6:15 am-6:40 pm

1 stop26h 25m

$1,102

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Sun 8/2

12:45 am-7:30 pm

1 stop28h 45m

Bangkok Don Mueang Intl

Sun 8/16

9:40 am-6:40 pm

1 stop23h 00m

$1,113

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 July is, on average, the cheapest month to fly to Thailand from Ontario, with most prices found around $457. If you are unable to visit Thailand during the month of July, then departing from Ontario during the month October is also very affordable. Most momondo users find prices during this month for around $604.

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 $962 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 $761 on momondo.

Can stopping save me money on Ontario to Thailand flights?

You could potentially save up to 17% 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 00m
Direct flights	None

The fastest flight from Ontario to Thailand takes 19h 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 June 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 7.8 8,454 reviews	Search Delta flights
Korean Air	PriceFrom $616	Free Cancellation	Rating 8.4 1,220 reviews	Search Korean Air flights
China Airlines	PriceFrom $717	Free Cancellation	Rating 8.3 829 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $763	Free Cancellation	Rating 8.9 350 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.