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Cheap flights from Ontario to Thailand from $356

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 1/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Thailand

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:00 am - 10:55 pmONT-CNX
26h 55m2 stops
Delta Logo
12:15 am - 10:34 pmCNX-ONT
36h 19m2 stops
$690Delta
Find Deal
dom., mar. 15 - mié., mar. 18
Korean Air Logo
6:00 am - 10:55 pmONT-CNX
26h 55m2 stops
Korean Air Logo
12:15 am - 5:13 pmCNX-ONT
30h 58m2 stops
$695Korean Air
Find Deal
dom., mar. 15 - mié., mar. 18
Delta Logo
6:00 am - 10:55 pmONT-CNX
26h 55m2 stops
Delta Logo
12:15 am - 10:34 pmCNX-ONT
36h 19m2 stops
$710Delta
Find Deal
dom., mar. 15 - mié., mar. 18
Korean Air Logo
7:30 am - 12:55 amONT-BKK
26h 25m2 stops
Korean Air Logo
12:55 am - 10:37 pmBKK-ONT
36h 42m2 stops
$731Korean Air
Find Deal
dom., feb. 22 - sáb., feb. 28
United Airlines Logo
6:00 am - 9:45 amONT-BKK
37h 45m2 stops
United Airlines Logo
7:00 am - 11:06 pmBKK-ONT
30h 06m2 stops
$734United Airlines
Find Deal
mar., mar. 31 - mié., abr. 22
China Airlines Logo
10:50 pm - 1:35 amONT-BKK
35h 45m1 stop
China Airlines Logo
5:50 pm - 4:50 pmBKK-ONT
38h 00m1 stop
$735China Airlines
Find Deal
jue., ene. 15 - lun., ene. 19
China Airlines Logo
11:50 pm - 9:50 amONT-BKK
20h 00m1 stop
China Airlines Logo
2:35 am - 5:50 pmBKK-ONT
29h 15m1 stop
$736China Airlines
Find Deal
lun., mar. 9 - sáb., mar. 21
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
$738China Airlines
Find Deal
jue., feb. 19 - sáb., feb. 28
Multiple Airlines Logo
6:00 am - 11:20 pmONT-BKK
26h 20m2 stops
Multiple Airlines Logo
9:30 pm - 5:13 pmBKK-ONT
33h 43m2 stops
$743Multiple Airlines
Find Deal
lun., mar. 2 - lun., mar. 16
Multiple Airlines Logo
7:30 am - 12:45 amONT-BKK
26h 15m2 stops
Multiple Airlines Logo
11:15 pm - 1:54 pmBKK-ONT
29h 39m2 stops
$744Multiple Airlines
Find Deal
jue., feb. 19 - sáb., feb. 28

China Airlines flights from Ontario to Thailand

Our best China Airlines deals on Ontario to Thailand flight tickets
China Airlines
Nov 27
ONT10:50 pmOntario
35h 45m
1 stop
BKK1:35 amBangkok Suvarnabhumi
Dec 24
BKK2:35 amBangkok Suvarnabhumi
29h 15m
1 stop
ONT4:50 pmOntario
$733
Find similar
China Airlines
Jan 15
ONT10:50 pmOntario
35h 45m
1 stop
BKK1:35 amBangkok Suvarnabhumi
Jan 19
BKK5:50 pmBangkok Suvarnabhumi
38h 00m
1 stop
ONT4:50 pmOntario
$735
Find similar
China Airlines
Mar 9
ONT11:50 pmOntario
20h 00m
1 stop
BKK9:50 amBangkok Suvarnabhumi
Mar 21
BKK2:35 amBangkok Suvarnabhumi
29h 15m
1 stop
ONT5:50 pmOntario
$736
Find similar

Lufthansa flights from Ontario to Thailand

Our best Lufthansa deals on Ontario to Thailand flight tickets
Lufthansa
Jan 12
ONT6:39 pmOntario
25h 46m
2 stops
BKK11:25 amBangkok Suvarnabhumi
Jan 25
BKK4:55 pmBangkok Suvarnabhumi
33h 23m
2 stops
ONT11:18 amOntario
$754
Find similar
Lufthansa
Jan 11
ONT1:53 pmOntario
30h 32m
2 stops
BKK11:25 amBangkok Suvarnabhumi
Jan 27
BKK4:55 pmBangkok Suvarnabhumi
39h 48m
2 stops
ONT5:43 pmOntario
$768
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 noviembre 26, 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

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

dom. 3/15

6:00 am-10:55 pm

2 stops26h 55m

Chiang Mai

mié. 3/18

12:15 am-10:34 pm

2 stops36h 19m

$690

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

dom. 3/15

6:00 am-10:55 pm

2 stops26h 55m

Chiang Mai

mié. 3/18

12:15 am-5:13 pm

2 stops30h 58m

$695

OntarioChiang Mai

ONT - CNX

ONTCNX

Ontario

dom. 3/15

6:00 am-10:55 pm

2 stops26h 55m

Chiang Mai

mié. 3/18

12:15 am-10:34 pm

2 stops36h 19m

$710

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

dom. 2/22

7:30 am-12:55 am

2 stops26h 25m

Bangkok Suvarnabhumi

sáb. 2/28

12:55 am-10:37 pm

2 stops36h 42m

$731

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

mar. 3/31

6:00 am-9:45 am

2 stops37h 45m

Bangkok Suvarnabhumi

mié. 4/22

7:00 am-11:06 pm

2 stops30h 06m

$734

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

jue. 1/15

10:50 pm-1:35 am

1 stop35h 45m

Bangkok Suvarnabhumi

lun. 1/19

5:50 pm-4:50 pm

1 stop38h 00m

$735

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

lun. 3/9

11:50 pm-9:50 am

1 stop20h 00m

Bangkok Suvarnabhumi

sáb. 3/21

2:35 am-5:50 pm

1 stop29h 15m

$736

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

jue. 2/19

10:50 pm-1:35 am

1 stop35h 45m

Bangkok Suvarnabhumi

sáb. 2/28

2:05 pm-4:50 pm

1 stop17h 45m

$738

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

lun. 3/2

6:00 am-11:20 pm

2 stops26h 20m

Bangkok Suvarnabhumi

lun. 3/16

9:30 pm-5:13 pm

2 stops33h 43m

$743

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

jue. 2/19

7:30 am-12:45 am

2 stops26h 15m

Bangkok Suvarnabhumi

sáb. 2/28

11:15 pm-1:54 pm

2 stops29h 39m

$744

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 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 $1,003 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 $762 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?

  • 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 AirPriceFrom $637Free CancellationRating
8.4
1,170 reviews
Search Korean Air flights
China AirlinesPriceFrom $737Free CancellationRating
8.3
782 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $787Free CancellationRating
8.9
235 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.

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