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, 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 32% 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 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.

$443 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 - 11:20 pm

ONT

BKK

25h 20m

2 stops

9:40 am - 5:17 pm

BKK

ONT

46h 37m

2 stops

$863Korean Air

Tue, Dec 1 - Mon, Dec 14

6:20 am - 9:45 pm

ONT

BKK

25h 25m

2 stops

9:50 am - 5:20 pm

BKK

ONT

21h 30m

2 stops

$890Delta

Thu, Sep 3 - Mon, Oct 5

6:00 am - 10:55 pm

ONT

CNX

25h 55m

2 stops

12:15 am - 5:17 pm

CNX

ONT

32h 02m

2 stops

$890Delta

Wed, Nov 11 - Sun, Nov 22

7:00 am - 9:30 pm

ONT

BKK

23h 30m

2 stops

11:15 pm - 1:57 pm

BKK

ONT

29h 42m

2 stops

$895Korean Air

Tue, Nov 17 - Tue, Jan 19

7:00 am - 10:55 pm

ONT

CNX

24h 55m

2 stops

12:15 am - 5:17 pm

CNX

ONT

32h 02m

2 stops

$895Korean Air

Mon, Nov 16 - Sun, Nov 22

12:55 pm - 11:35 pm

ONT

BKK

44h 40m

2 stops

11:30 pm - 10:40 pm

BKK

ONT

37h 10m

2 stops

$896Delta

Sun, Aug 30 - Mon, Sep 7

6:20 am - 9:45 pm

ONT

BKK

25h 25m

2 stops

2:35 am - 5:21 pm

BKK

ONT

28h 46m

2 stops

$911Korean Air

Thu, Aug 20 - Sat, Aug 29

7:00 am - 9:30 pm

ONT

BKK

23h 30m

2 stops

12:55 am - 5:17 pm

BKK

ONT

31h 22m

2 stops

$914Korean Air

Mon, Nov 2 - Tue, Dec 1

12:10 am - 8:45 am

ONT

KBV

42h 35m

2 stops

9:25 am - 6:00 pm

KBV

ONT

22h 35m

2 stops

$1,399China Airlines

Sat, Oct 10 - Thu, Oct 15

12:10 am - 8:45 am

ONT

KBV

42h 35m

2 stops

9:25 am - 6:00 pm

KBV

ONT

22h 35m

2 stops

$1,452China Airlines

Sat, Oct 10 - Thu, Oct 15

Delta flights from Ontario to Thailand

Our best Delta deals on Ontario to Thailand flight tickets

Delta

Sep 3

ONT6:20 amOntario

25h 25m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Oct 5

BKK9:50 amBangkok Suvarnabhumi

21h 30m

2 stops

ONT5:20 pmOntario

$890

Delta

Aug 30

ONT5:05 pmOntario

40h 30m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Sep 9

BKK9:50 amBangkok Suvarnabhumi

26h 50m

2 stops

ONT10:40 pmOntario

$896

Delta

Sep 4

ONT6:20 amOntario

25h 25m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Oct 13

BKK9:50 amBangkok Suvarnabhumi

21h 27m

2 stops

ONT5:17 pmOntario

$921

China Airlines flights from Ontario to Thailand

Our best China Airlines deals on Ontario to Thailand flight tickets

China Airlines

Aug 1

ONT12:45 amOntario

19h 00m

1 stop

BKK9:45 amBangkok Suvarnabhumi

Aug 15

BKK2:40 amBangkok Suvarnabhumi

30h 00m

1 stop

ONT6:40 pmOntario

$1,020

China Airlines

Nov 6

ONT10:50 pmOntario

20h 00m

1 stop

BKK9:50 amBangkok Suvarnabhumi

Nov 13

BKK2:35 amBangkok Suvarnabhumi

29h 15m

1 stop

ONT4:50 pmOntario

$1,028

China Airlines

Oct 1

ONT12:10 amOntario

19h 35m

1 stop

BKK9:45 amBangkok Suvarnabhumi

Oct 16

BKK1:20 pmBangkok Suvarnabhumi

18h 40m

1 stop

ONT6:00 pmOntario

$1,038

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 12/1

7:00 am-11:20 pm

2 stops25h 20m

Bangkok Suvarnabhumi

Mon 12/14

9:40 am-5:17 pm

2 stops46h 37m

$863

Quickest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 9/3

6:20 am-9:45 pm

2 stops25h 25m

Bangkok Suvarnabhumi

Mon 10/5

9:50 am-5:20 pm

2 stops21h 30m

$890

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Wed 11/11

6:00 am-10:55 pm

2 stops25h 55m

Chiang Mai

Sun 11/22

12:15 am-5:17 pm

2 stops32h 02m

$890

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 11/17

7:00 am-9:30 pm

2 stops23h 30m

Bangkok Suvarnabhumi

Tue 1/19

11:15 pm-1:57 pm

2 stops29h 42m

$895

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Mon 11/16

7:00 am-10:55 pm

2 stops24h 55m

Chiang Mai

Sun 11/22

12:15 am-5:17 pm

2 stops32h 02m

$895

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 8/30

12:55 pm-11:35 pm

2 stops44h 40m

Bangkok Suvarnabhumi

Mon 9/7

11:30 pm-10:40 pm

2 stops37h 10m

$896

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 8/20

6:20 am-9:45 pm

2 stops25h 25m

Bangkok Suvarnabhumi

Sat 8/29

2:35 am-5:21 pm

2 stops28h 46m

$911

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 11/2

7:00 am-9:30 pm

2 stops23h 30m

Bangkok Suvarnabhumi

Tue 12/1

12:55 am-5:17 pm

2 stops31h 22m

$914

OntarioKrabi

ONT - KBV

ONTKBV

Ontario

Sat 10/10

12:10 am-8:45 am

2 stops42h 35m

Krabi

Thu 10/15

9:25 am-6:00 pm

2 stops22h 35m

$1,399

OntarioKrabi

ONT - KBV

ONTKBV

Ontario

Sat 10/10

12:10 am-8:45 am

2 stops42h 35m

Krabi

Thu 10/15

9:25 am-6:00 pm

2 stops22h 35m

$1,452

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 $955 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 8,396 reviews	Search Delta flights
Korean Air	PriceFrom $616	Free Cancellation	Rating 8.4 1,218 reviews	Search Korean Air flights
China Airlines	PriceFrom $717	Free Cancellation	Rating 8.3 828 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $763	Free Cancellation	Rating 8.9 327 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.