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, Cathay Pacific 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 33% of people opting to fly with this airline when traveling to Thailand. Keep in mind that there are 23 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 July 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.

$412 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 - 1:35 pm

ONT

BKK

41h 15m

2 stops

9:40 pm - 5:21 pm

BKK

ONT

33h 41m

2 stops

$751Korean Air

Mon, Aug 24 - Sun, Sep 6

6:20 am - 11:35 pm

ONT

BKK

27h 15m

2 stops

9:40 pm - 5:21 pm

BKK

ONT

33h 41m

2 stops

$791Korean Air

Mon, Aug 10 - Tue, Aug 25

6:20 am - 11:35 pm

ONT

BKK

27h 15m

2 stops

9:40 pm - 5:21 pm

BKK

ONT

33h 41m

2 stops

$797Korean Air

Mon, Aug 10 - Tue, Aug 25

6:20 am - 11:35 pm

ONT

BKK

27h 15m

2 stops

2:35 am - 5:21 pm

BKK

ONT

28h 46m

2 stops

$801Korean Air

Mon, Aug 10 - Mon, Aug 24

6:20 am - 11:35 pm

ONT

BKK

27h 15m

2 stops

2:35 am - 10:45 pm

BKK

ONT

34h 10m

2 stops

$805Korean Air

Mon, Aug 10 - Sun, Aug 23

6:20 am - 9:45 pm

ONT

BKK

25h 25m

2 stops

11:30 pm - 5:21 pm

BKK

ONT

31h 51m

2 stops

$811Korean Air

Mon, Aug 10 - Tue, Aug 25

6:01 pm - 11:35 pm

ONT

BKK

39h 34m

2 stops

2:35 am - 10:45 pm

BKK

ONT

34h 10m

2 stops

$812Multiple Airlines

Sun, Aug 9 - Mon, Aug 24

6:00 am - 9:30 pm

ONT

BKK

25h 30m

2 stops

9:40 am - 4:24 pm

BKK

ONT

21h 44m

2 stops

$820Delta

Wed, Oct 28 - Tue, Nov 3

6:00 am - 11:35 pm

ONT

BKK

27h 35m

2 stops

11:30 pm - 5:12 pm

BKK

ONT

31h 42m

2 stops

$821Delta

Thu, Sep 3 - Sun, Oct 11

6:00 am - 10:55 pm

ONT

CNX

26h 55m

2 stops

12:15 am - 5:17 pm

CNX

ONT

32h 02m

2 stops

$821Delta

Mon, Oct 26 - Tue, Nov 17

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Korean Air flights from Ontario to Thailand

Our best Korean Air deals on Ontario to Thailand flight tickets

Korean Air

Aug 24

ONT6:20 amOntario

41h 15m

2 stops

BKK1:35 pmBangkok Suvarnabhumi

Sep 6

BKK9:40 pmBangkok Suvarnabhumi

33h 41m

2 stops

ONT5:21 pmOntario

$751

Korean Air

Aug 10

ONT6:20 amOntario

27h 15m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Aug 25

BKK9:40 pmBangkok Suvarnabhumi

33h 41m

2 stops

ONT5:21 pmOntario

$791

Korean Air

Aug 10

ONT6:20 amOntario

27h 15m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

Aug 25

BKK9:40 pmBangkok Suvarnabhumi

33h 41m

2 stops

ONT5:21 pmOntario

$797

Delta flights from Ontario to Thailand

Our best Delta deals on Ontario to Thailand flight tickets

Delta

Oct 28

ONT6:00 amOntario

25h 30m

2 stops

BKK9:30 pmBangkok Suvarnabhumi

Nov 2

BKK9:40 amBangkok Suvarnabhumi

21h 44m

2 stops

ONT4:24 pmOntario

$820

Delta

Sep 3

ONT6:20 amOntario

25h 25m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Oct 13

BKK9:50 amBangkok Suvarnabhumi

21h 22m

2 stops

ONT5:12 pmOntario

$821

Delta

Aug 2

ONT9:40 amOntario

49h 25m

2 stops

BKK1:05 amBangkok Suvarnabhumi

Sep 2

BKK2:35 amBangkok Suvarnabhumi

34h 59m

2 stops

ONT11:34 pmOntario

$827

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/24

6:20 am-1:35 pm

2 stops41h 15m

Bangkok Suvarnabhumi

Sun 9/6

9:40 pm-5:21 pm

2 stops33h 41m

$751

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/10

6:20 am-11:35 pm

2 stops27h 15m

Bangkok Suvarnabhumi

Tue 8/25

9:40 pm-5:21 pm

2 stops33h 41m

$791

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/10

6:20 am-11:35 pm

2 stops27h 15m

Bangkok Suvarnabhumi

Tue 8/25

9:40 pm-5:21 pm

2 stops33h 41m

$797

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/10

6:20 am-11:35 pm

2 stops27h 15m

Bangkok Suvarnabhumi

Mon 8/24

2:35 am-5:21 pm

2 stops28h 46m

$801

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/10

6:20 am-11:35 pm

2 stops27h 15m

Bangkok Suvarnabhumi

Sun 8/23

2:35 am-10:45 pm

2 stops34h 10m

$805

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/10

6:20 am-9:45 pm

2 stops25h 25m

Bangkok Suvarnabhumi

Tue 8/25

11:30 pm-5:21 pm

2 stops31h 51m

$811

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 8/9

6:01 pm-11:35 pm

2 stops39h 34m

Bangkok Suvarnabhumi

Mon 8/24

2:35 am-10:45 pm

2 stops34h 10m

$812

Quickest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 10/28

6:00 am-9:30 pm

2 stops25h 30m

Bangkok Suvarnabhumi

Tue 11/3

9:40 am-4:24 pm

2 stops21h 44m

$820

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 9/3

6:00 am-11:35 pm

2 stops27h 35m

Bangkok Suvarnabhumi

Sun 10/11

11:30 pm-5:12 pm

2 stops31h 42m

$821

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

Mon 10/26

6:00 am-10:55 pm

2 stops26h 55m

Chiang Mai

Tue 11/17

12:15 am-5:17 pm

2 stops32h 02m

$821

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 $968 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 $764 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 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 July 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 8,463 reviews	Search Delta flights
Korean Air	PriceFrom $616	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
China Airlines	PriceFrom $718	Free Cancellation	Rating 8.3 834 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $763	Free Cancellation	Rating 8.8 359 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.