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Cheap flights from Ontario to Thailand from $361

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Thailand departing on 9/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Ontario to Thailand

Cheap round-trip flights

Korean Air Logo
6:40 am - 11:20 pmONT-BKK
25h 40m2 stops
Korean Air Logo
12:55 am - 10:38 pmBKK-ONT
36h 43m2 stops
$701Korean Air
Find Deal
Tue, Dec 2 - Mon, Jan 19
Delta Logo
6:00 am - 9:45 pmONT-BKK
25h 45m2 stops
Delta Logo
2:35 am - 10:41 pmBKK-ONT
34h 06m2 stops
$710Delta
Find Deal
Sun, Oct 19 - Thu, Oct 23
United Airlines Logo
6:38 pm - 5:10 amONT-BKK
43h 32m2 stops
United Airlines Logo
9:10 am - 12:37 pmBKK-ONT
42h 27m2 stops
$724United Airlines
Find Deal
Thu, Nov 20 - Sat, Nov 29
United Airlines Logo
9:36 am - 11:55 pmONT-BKK
24h 19m2 stops
United Airlines Logo
9:35 am - 5:40 pmBKK-ONT
46h 05m2 stops
$727United Airlines
Find Deal
Mon, Sep 29 - Sun, Oct 5
Multiple Airlines Logo
6:00 am - 11:20 pmONT-BKK
26h 20m2 stops
Multiple Airlines Logo
12:55 am - 3:20 pmBKK-ONT
29h 25m2 stops
$764Multiple Airlines
Find Deal
Sat, Jan 10 - Thu, Jan 29
China Airlines Logo
10:50 pm - 1:35 amONT-BKK
35h 45m1 stop
China Airlines Logo
2:05 pm - 4:50 pmBKK-ONT
17h 45m1 stop
$780China Airlines
Find Deal
Thu, Feb 12 - Mon, Feb 16
China Airlines Logo
10:50 pm - 1:05 pmONT-BKK
23h 15m1 stop
China Airlines Logo
10:55 am - 4:50 pmBKK-ONT
20h 55m1 stop
$782China Airlines
Find Deal
Wed, Jan 28 - Thu, Feb 5
STARLUX Airlines Logo
11:10 pm - 12:00 pmONT-BKK
22h 50m1 stop
STARLUX Airlines Logo
5:40 pm - 4:50 pmBKK-ONT
37h 10m1 stop
$808STARLUX Airlines
Find Deal
Mon, Oct 20 - Tue, Oct 28
STARLUX Airlines Logo
11:10 pm - 4:40 pmONT-BKK
27h 30m1 stop
STARLUX Airlines Logo
5:40 pm - 4:50 pmBKK-ONT
37h 10m1 stop
$834STARLUX Airlines
Find Deal
Fri, Oct 17 - Sun, Oct 26
Multiple Airlines Logo
7:35 am - 10:10 pmONT-HKT
24h 35m2 stops
Multiple Airlines Logo
11:40 pm - 5:10 pmHKT-ONT
32h 30m2 stops
$863Multiple Airlines
Find Deal
Mon, Oct 27 - Tue, Nov 4

Delta flights from Ontario to Thailand

Our best Delta deals on Ontario to Thailand flight tickets
Delta
Oct 19
ONT6:00 amOntario
25h 45m
2 stops
BKK9:45 pmBangkok Suvarnabhumi
Oct 23
BKK2:35 amBangkok Suvarnabhumi
34h 06m
2 stops
ONT10:41 pmOntario
$710
Find similar
Delta
Oct 18
ONT9:50 amOntario
47h 35m
2 stops
BKK11:25 pmBangkok Suvarnabhumi
Oct 31
BKK9:40 amBangkok Suvarnabhumi
27h 01m
2 stops
ONT10:41 pmOntario
$716
Find similar
Delta
Oct 21
ONT7:35 amOntario
39h 40m
2 stops
BKK1:15 pmBangkok Suvarnabhumi
Oct 27
BKK12:55 amBangkok Suvarnabhumi
30h 15m
2 stops
ONT5:10 pmOntario
$760
Find similar

China Airlines flights from Ontario to Thailand

Our best China Airlines deals on Ontario to Thailand flight tickets
China Airlines
Feb 12
ONT10:50 pmOntario
35h 45m
1 stop
BKK1:35 amBangkok Suvarnabhumi
Feb 16
BKK2:05 pmBangkok Suvarnabhumi
17h 45m
1 stop
ONT4:50 pmOntario
$780
Find similar
China Airlines
Jan 28
ONT10:50 pmOntario
23h 15m
1 stop
BKK1:05 pmBangkok Suvarnabhumi
Feb 5
BKK10:55 amBangkok Suvarnabhumi
20h 55m
1 stop
ONT4:50 pmOntario
$782
Find similar
China Airlines
Feb 16
ONT10:50 pmOntario
23h 15m
1 stop
BKK1:05 pmBangkok Suvarnabhumi
Mar 1
BKK2:05 pmBangkok Suvarnabhumi
17h 45m
1 stop
ONT4:50 pmOntario
$785
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Thailand that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Ontario to Thailand that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 12/2

6:40 am-11:20 pm

2 stops25h 40m

Bangkok Suvarnabhumi

Mon 1/19

12:55 am-10:38 pm

2 stops36h 43m

$701

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 10/19

6:00 am-9:45 pm

2 stops25h 45m

Bangkok Suvarnabhumi

Thu 10/23

2:35 am-10:41 pm

2 stops34h 06m

$710

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 11/20

6:38 pm-5:10 am

2 stops43h 32m

Bangkok Suvarnabhumi

Sat 11/29

9:10 am-12:37 pm

2 stops42h 27m

$724

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 9/29

9:36 am-11:55 pm

2 stops24h 19m

Bangkok Suvarnabhumi

Sun 10/5

9:35 am-5:40 pm

2 stops46h 05m

$727

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 1/10

6:00 am-11:20 pm

2 stops26h 20m

Bangkok Suvarnabhumi

Thu 1/29

12:55 am-3:20 pm

2 stops29h 25m

$764

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 2/12

10:50 pm-1:35 am

1 stop35h 45m

Bangkok Suvarnabhumi

Mon 2/16

2:05 pm-4:50 pm

1 stop17h 45m

$780

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 1/28

10:50 pm-1:05 pm

1 stop23h 15m

Bangkok Suvarnabhumi

Thu 2/5

10:55 am-4:50 pm

1 stop20h 55m

$782

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 10/20

11:10 pm-12:00 pm

1 stop22h 50m

Bangkok Suvarnabhumi

Tue 10/28

5:40 pm-4:50 pm

1 stop37h 10m

$808

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Fri 10/17

11:10 pm-4:40 pm

1 stop27h 30m

Bangkok Suvarnabhumi

Sun 10/26

5:40 pm-4:50 pm

1 stop37h 10m

$834

OntarioPhuket City

ONT - HKT

ONTHKT

Ontario

Mon 10/27

7:35 am-10:10 pm

2 stops24h 35m

Phuket City

Tue 11/4

11:40 pm-5:10 pm

2 stops32h 30m

$863

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Thailand from

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

What is the cheapest month to fly to Thailand?

The month of August is, on average, the cheapest month to fly to Thailand from Ontario, with most prices found around $806. If you are unable to visit Thailand during the month of August, then departing from Ontario during the month September is also very affordable. Most momondo users find prices during this month for around $825.

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 $1,021 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 $804 on momondo.

Can stopping save me money on Ontario to Thailand flights?

You could potentially save up to 7% 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

Direct flights

None
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?

  • 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
China AirlinesPriceFrom $773Free CancellationRating
8.3
768 reviews
Search China Airlines flights
Korean AirPriceFrom $781Free CancellationRating
8.4
1,140 reviews
Search Korean Air flights
STARLUX AirlinesPriceFrom $789Free CancellationRating
8.9
215 reviews
Search STARLUX Airlines flights
United AirlinesPriceFrom $795Free CancellationRating
7.4
8,926 reviews
Search United 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.

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