$409+ Cheap flights from Ontario (ONT) to Thailand
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Jul 26 — Aug 21
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Ontario to Thailand with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Thailand
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to ThailandExplore the most affordable flight options available from Ontario to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2026.
Explore the most affordable flight options available from Ontario to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2026.
This lol.travel deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:00 am
ONT
- BKK
2 stops24h 30m
Korean Air
Tue 11/109:30 pm
BKK
- ONT
2 stops34h 47m
Korean Air
Deal found 6/24![Korean Air logo]()
$830
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:20 am
ONT
- BKK
2 stops27h 15m
Delta
Wed 8/2611:30 pm
BKK
- ONT
2 stops38h 04m
Delta
Deal found 6/26![Delta logo]()
$838
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
ONT
- BKK
2 stops27h 35m
Delta
Tue 9/159:50 am
BKK
- ONT
2 stops27h 57m
Delta
Deal found 6/23![Delta logo]()
$839
This Korean Air deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Wed 12/2311:15 pm
BKK
- ONT
2 stops32h 41m
Korean Air
Deal found 6/24![Korean Air logo]()
$844
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:05 pm
ONT
- BKK
2 stops38h 40m
Delta
Wed 9/1611:30 pm
BKK
- ONT
2 stops38h 17m
Delta
Deal found 6/23![Delta logo]()
$845
This Priceline deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am
ONT
- CNX
2 stops24h 55m
Korean Air
Wed 11/1112:15 am
CNX
- ONT
2 stops32h 02m
Korean Air
Deal found 6/22![Korean Air logo]()
$845
This lol.travel deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:20 am
ONT
- HKT
2 stops25h 50m
Korean Air
Tue 8/2511:25 pm
HKT
- ONT
2 stops31h 56m
Korean Air
Deal found 6/22![Korean Air logo]()
$878
This lol.travel deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Sun 8/169:50 am
BKK
- ONT
2 stops45h 31m
Korean Air
Deal found 6/25![Korean Air logo]()
$882
This lol.travel deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Wed 10/2812:55 am
BKK
- ONT
2 stops30h 22m
Korean Air
Deal found 6/21![Korean Air logo]()
$888
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:00 am
ONT
- BKK
2 stops27h 35m
Delta
Sat 8/292:35 am
BKK
- ONT
2 stops34h 59m
Delta
Deal found 6/23![Delta logo]()
$889
This Korean Air deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Wed 11/2512:55 am
BKK
- ONT
2 stops31h 22m
Korean Air
Deal found 6/26![Korean Air logo]()
$894
This Korean Air deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:00 am
ONT
- CNX
2 stops25h 55m
Korean Air
Wed 10/2812:15 am
CNX
- ONT
2 stops31h 02m
Korean Air
Deal found 6/25![Korean Air logo]()
$894
Best flights from Ontario to ThailandDiscover carefully curated flight deals from Ontario to Thailand that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 26, 2026.
Discover carefully curated flight deals from Ontario to Thailand that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 26, 2026.
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:20 am
ONT
- BKK
2 stops25h 25m
Delta
Mon 10/199:50 am
BKK
- ONT
2 stops21h 27m
Delta
Deal found 6/23![Delta logo]()
$839
This Korean Air deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Mon 10/192:35 am
BKK
- ONT
2 stops28h 37m
Korean Air
Deal found 6/26![Korean Air logo]()
$844
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:01 am
ONT
- BKK
2 stops24h 54m
United Airlines
Tue 9/19:35 am
BKK
- ONT
2 stops24h 26m
United Airlines
Deal found 6/22![United Airlines logo]()
$949
This China Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:45 am
ONT
- BKK
1 stop21h 25m
China Airlines
Tue 9/15:30 pm
BKK
- ONT
1 stop39h 10m
China Airlines
Deal found 6/22![China Airlines logo]()
$1,022
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:45 am
ONT
- DMK
1 stop25h 55m
Multiple Airlines
Mon 8/317:25 am
DMK
- ONT
1 stop25h 15m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$1,152
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:20 am
ONT
- BKK
2 stops25h 25m
Delta
Wed 10/219:50 am
BKK
- ONT
2 stops21h 27m
Delta
Deal found 6/23![Delta logo]()
$839
This Korean Air deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Thu 8/202:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/26![Korean Air logo]()
$894
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:00 am
ONT
- BKK
2 stops27h 20m
United Airlines
Wed 12/234:55 pm
BKK
- ONT
2 stops21h 11m
United Airlines
Deal found 6/22![United Airlines logo]()
$967
This Korean Air deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:00 am
ONT
- BKK
2 stops24h 30m
Korean Air
Wed 10/2812:55 am
BKK
- ONT
2 stops30h 22m
Korean Air
Deal found 6/21![Korean Air logo]()
$895
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:20 am
ONT
- HKT
2 stops25h 50m
Delta
Wed 9/1611:25 pm
HKT
- ONT
2 stops37h 15m
Delta
Deal found 6/23![Delta logo]()
$939
This China Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:45 am
ONT
- CNX
1 stop19h 35m
China Airlines
Tue 9/1511:20 am
CNX
- ONT
1 stop21h 20m
China Airlines
Deal found 6/22![China Airlines logo]()
$1,091
This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/114:20 pm
ONT
- BKK
2 stops27h 15m
United Airlines
Tue 7/147:00 am
BKK
- ONT
2 stops22h 29m
United Airlines
Deal found 6/25![United Airlines logo]()
$1,005
This Korean Air deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/206:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Mon 7/2711:30 pm
BKK
- ONT
2 stops31h 51m
Korean Air
Deal found 6/23![Korean Air logo]()
$956
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:00 am
ONT
- HKT
2 stops26h 10m
Delta
Sun 9/1311:25 pm
HKT
- ONT
2 stops38h 22m
Delta
Deal found 6/25![Delta logo]()
$989
This China Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2312:45 am
ONT
- CNX
1 stop19h 35m
China Airlines
Sat 9/1911:20 am
CNX
- ONT
1 stop20h 40m
China Airlines
Deal found 6/25![China Airlines logo]()
$1,091
This Mytrip deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:45 am
ONT
- DMK
1 stop28h 45m
Multiple Airlines
Fri 8/216:15 am
DMK
- ONT
1 stop26h 25m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$1,237
This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/295:00 am
ONT
- BKK
2 stops28h 20m
United Airlines
Fri 12/184:55 pm
BKK
- ONT
2 stops21h 11m
United Airlines
Deal found 6/25![United Airlines logo]()
$1,066
This China Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:45 am
ONT
- CNX
1 stop19h 35m
China Airlines
Fri 9/1811:20 am
CNX
- ONT
1 stop20h 40m
China Airlines
Deal found 6/25![China Airlines logo]()
$1,091
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:00 pm
ONT
- HKT
2 stops38h 10m
Delta
Thu 10/1511:25 pm
HKT
- ONT
2 stops37h 18m
Delta
Deal found 6/24![Delta logo]()
$994
This Korean Air deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:20 am
ONT
- HKT
2 stops25h 50m
Korean Air
Tue 10/611:25 pm
HKT
- ONT
2 stops31h 52m
Korean Air
Deal found 6/22![Korean Air logo]()
$1,020
This Mytrip deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:10 am
ONT
- DMK
1 stop26h 30m
Multiple Airlines
Thu 10/226:15 am
DMK
- ONT
1 stop25h 45m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$1,239
This United Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:25 am
ONT
- BKK
2 stops24h 30m
United Airlines
Wed 10/284:55 pm
BKK
- ONT
2 stops19h 58m
United Airlines
Deal found 6/24![United Airlines logo]()
$1,073
This China Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:45 am
ONT
- CNX
1 stop19h 35m
China Airlines
Sun 9/1311:20 am
CNX
- ONT
1 stop21h 20m
China Airlines
Deal found 6/22![China Airlines logo]()
$1,091
This Mytrip deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Sat 10/246:15 am
DMK
- ONT
1 stop25h 45m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,246
This ScholarTrip deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:20 am
ONT
- HKT
2 stops25h 50m
Korean Air
Tue 8/1811:25 pm
HKT
- ONT
2 stops31h 56m
Korean Air
Deal found 6/23![Korean Air logo]()
$1,032
This China Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:45 am
ONT
- CNX
1 stop19h 35m
China Airlines
Sun 9/1311:20 am
CNX
- ONT
1 stop21h 20m
China Airlines
Deal found 6/23![China Airlines logo]()
$1,091
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:20 am
ONT
- HKT
2 stops25h 50m
Delta
Sat 9/1911:25 pm
HKT
- ONT
2 stops31h 55m
Delta
Deal found 6/25![Delta logo]()
$1,103
This Mytrip deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:45 am
ONT
- DMK
2 stops26h 50m
Multiple Airlines
Thu 9/37:30 am
DMK
- ONT
2 stops25h 10m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$1,254
This Korean Air deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:00 am
ONT
- HKT
2 stops24h 10m
Korean Air
Thu 11/511:40 pm
HKT
- ONT
2 stops32h 37m
Korean Air
Deal found 6/25![Korean Air logo]()
$1,044
This China Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:45 am
ONT
- CNX
1 stop19h 35m
China Airlines
Sat 9/1911:20 am
CNX
- ONT
1 stop20h 40m
China Airlines
Deal found 6/25![China Airlines logo]()
$1,091
Last-minute flights from Ontario to ThailandDiscover last-minute flight deals from Ontario to Thailand. Data last updated June 26, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Thailand. Data last updated June 26, 2026 and is based on user searches.
This Korean Air deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Tue 7/212:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/24![Korean Air logo]()
$934
This Korean Air deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Sun 7/192:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/23![Korean Air logo]()
$935
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:00 am
ONT
- BKK
2 stops28h 55m
United Airlines
Thu 8/207:00 am
BKK
- ONT
2 stops25h 11m
United Airlines
Deal found 6/23![United Airlines logo]()
$950
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:00 am
ONT
- BKK
2 stops25h 45m
Delta
Tue 9/159:50 am
BKK
- ONT
2 stops26h 50m
Delta
Deal found 6/21![Delta logo]()
$839
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/176:00 am
ONT
- BKK
2 stops25h 45m
Delta
Tue 9/89:50 am
BKK
- ONT
2 stops26h 14m
Delta
Deal found 6/24![Delta logo]()
$889
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/214:20 pm
ONT
- BKK
2 stops27h 15m
United Airlines
Wed 9/169:35 am
BKK
- ONT
2 stops24h 26m
United Airlines
Deal found 6/23![United Airlines logo]()
$954
This Korean Air deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Sun 8/92:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/25![Korean Air logo]()
$955
This Jetabroad deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Tue 7/282:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/24![Korean Air logo]()
$920
This Korean Air deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Fri 8/142:35 am
BKK
- ONT
2 stops34h 10m
Korean Air
Deal found 6/25![Korean Air logo]()
$908
This Korean Air deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Fri 8/1411:30 pm
BKK
- ONT
2 stops37h 15m
Korean Air
Deal found 6/23![Korean Air logo]()
$909
This Korean Air deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Wed 8/122:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/23![Korean Air logo]()
$956
This lol.travel deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Wed 10/2812:55 am
BKK
- ONT
2 stops30h 22m
Korean Air
Deal found 6/21![Korean Air logo]()
$888
One-way flights from Ontario to ThailandSearch for one-way flight options from Ontario to Thailand. Find affordable one-way fares based on user searches. Data last updated June 26, 2026.
Search for one-way flight options from Ontario to Thailand. Find affordable one-way fares based on user searches. Data last updated June 26, 2026.
This lol.travel deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Deal found 6/25![Korean Air logo]()
$409
This Korean Air deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Deal found 6/24![Korean Air logo]()
$427
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:20 am
ONT
- BKK
2 stops25h 25m
Delta
Deal found 6/26![Delta logo]()
$428
This Korean Air deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Deal found 6/26![Korean Air logo]()
$430
This Korean Air deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/116:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Deal found 6/22![Korean Air logo]()
$431
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/91:00 pm
ONT
- BKK
2 stops46h 05m
Delta
Deal found 6/25![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/106:00 am
ONT
- BKK
2 stops29h 05m
Delta
Deal found 6/25![Delta logo]()
$453
This Korean Air deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:00 am
ONT
- BKK
2 stops29h 05m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$455
This Korean Air deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:00 am
ONT
- BKK
2 stops27h 35m
Korean Air
Deal found 6/21![Korean Air logo]()
$456
This Trip.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/106:00 am
ONT
- BKK
2 stops29h 05m
Korean Air
Deal found 6/22![Korean Air logo]()
$459
This Korean Air deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Deal found 6/26![Korean Air logo]()
$460
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:00 am
ONT
- HKT
2 stops26h 10m
Delta
Deal found 6/23![Delta logo]()
$478
Find flight deals from Ontario to Thailand
Keep the following information in mind while searching for Ontario to Thailand flight deals. Data was last updated June 26, 2026.
Round-trip from | $830 (lol.travel) |
|---|---|
One-way from | $409 (lol.travel) |
Popular in | December |
Cheapest in | March |
Average price | $1,042 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated June 26, 2026.
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
Cheapest round-trip
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 9/22
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Mon 10/19
9:50 am-5:17 pm
2 stops21h 27m
$839
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 9/21
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Wed 10/21
9:50 am-5:17 pm
2 stops21h 27m
$839
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Thu 10/1
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Mon 10/19
2:35 am-5:12 pm
2 stops28h 37m
$844
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 8/17
6:20 am-11:35 pm
2 stops27h 15m
Bangkok Suvarnabhumi
Thu 8/20
2:35 am-5:21 pm
2 stops28h 46m
$894
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 10/25
7:00 am-9:30 pm
2 stops24h 30m
Bangkok Suvarnabhumi
Wed 10/28
12:55 am-5:17 pm
2 stops30h 22m
$895
OntarioPhuket City
ONT - HKT
ONTHKT
Ontario
Wed 8/19
6:20 am-10:10 pm
2 stops25h 50m
Phuket City
Wed 9/16
11:25 pm-10:40 pm
2 stops37h 15m
$939
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 8/12
9:01 am-11:55 pm
2 stops24h 54m
Bangkok Suvarnabhumi
Tue 9/1
9:35 am-8:01 pm
2 stops24h 26m
$949
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 7/20
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Mon 7/27
11:30 pm-5:21 pm
2 stops31h 51m
$956
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 11/24
6:00 am-12:20 am
2 stops27h 20m
Bangkok Suvarnabhumi
Wed 12/23
4:55 pm-11:06 pm
2 stops21h 11m
$967
OntarioPhuket City
ONT - HKT
ONTHKT
Ontario
Sat 8/22
6:00 am-10:10 pm
2 stops26h 10m
Phuket City
Sun 9/13
11:25 pm-11:47 pm
2 stops38h 22m
$989
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Thailand
Have a flexible travel schedule? Discover the best time to fly to Thailand from Ontario with our price prediction graph.
ONT-BKK
ONT-CNX
ONT-HKT
ONT-DMK
ONT-KBV
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Thailand
ONT-TH0
ONT-BKK
ONT-CNX
ONT-HKT
ONT-DMK
What is the cheapest month to book a flight from Ontario to Thailand?
Currently, July is the cheapest month in which you can book a flight from Ontario to Thailand (average of $457). Flying from Ontario to Thailand in December is currently the most expensive (average of $732). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from Ontario to Thailand?
The best time to book flights from Ontario to Thailand is 81 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Thailand
Get insights into the airlines that provide service to Thailand. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Thailand. Reviews last updated June 26, 2026.
Peruse reviews from past customers who have flown with STARLUX Airlines,Korean Air, andChina Airlines from Ontario to Thailand to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
9.2
Entertainment
8.8
Boarding
8.9
Overall
8.9
Food
8.7
Comfort
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.2
Entertainment
8.8
Boarding
8.9
Overall
8.9
Food
8.7
Comfort
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.2
Entertainment
8.8
Boarding
8.9
Overall
8.9
Food
8.7
Comfort
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.2
Entertainment
8.8
Boarding
8.9
Overall
8.9
Food
8.7
Comfort
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.2
Entertainment
8.8
Boarding
8.9
Overall
8.9
Food
8.7
Comfort
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Related info for your journey
Find useful and relevant information for your journey from Ontario to Thailand. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Top regions
Alternative routes for Ontario to Thailand
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Thailand by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Thailand by cabin class
Find flights from Ontario to Thailand, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Thailand flights
Browse other Ontario and Thailand flight options. Last updated on June 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Thailand flights
Consider these flights traveling from Ontario to Thailand.
Fly to Thailand regions
Consider these flights traveling to Thailand regions.
Top 4 airlines flying from Ontario to Thailand
Discover the top 4 airlines that operate flights from Ontario to Thailand. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$457 | Average$668 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$616 | Average$820 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$717 | Average$1,160 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$763 | Average$830 | FlexibilityNo cancel fee | On-timeN/A |