$410+ Cheap flights from Ontario (ONT) to Bangkok
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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Aug 21 — Aug 281
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Bangkok 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
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Cheapest flights from Ontario to BangkokExplore the most affordable flight options available from Ontario to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 22, 2026.
Explore the most affordable flight options available from Ontario to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 22, 2026.
This lastminute.com deal was found by Cheapflights users on 7/18. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Tue 9/82:35 am
BKK
- ONT
2 stops28h 44m
Korean Air
Deal found 7/18![Korean Air logo]()
$778
This Delta deal was found by Cheapflights users on 7/17. 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 9/96:00 am
ONT
- BKK
2 stops27h 35m
Delta
Mon 9/2111:30 pm
BKK
- ONT
2 stops38h 17m
Delta
Deal found 7/17![Delta logo]()
$820
This Delta deal was found by Cheapflights users on 7/20. 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 9/236:20 am
ONT
- BKK
2 stops25h 25m
Delta
Wed 10/212:35 am
BKK
- ONT
2 stops34h 08m
Delta
Deal found 7/20![Delta logo]()
$821
This Richmond deal was found by Cheapflights users on 7/20. 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 Richmond is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Wed 2/2411:15 pm
BKK
- ONT
2 stops38h 28m
Korean Air
Deal found 7/20![Korean Air logo]()
$825
This Korean Air deal was found by Cheapflights users on 7/20. 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 10/156:20 am
ONT
- BKK
2 stops28h 45m
Korean Air
Tue 10/202:35 am
BKK
- ONT
2 stops28h 37m
Korean Air
Deal found 7/20![Korean Air logo]()
$826
This Korean Air deal was found by Cheapflights users on 7/17. 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 7/17![Korean Air logo]()
$844
This Delta deal was found by Cheapflights users on 7/17. 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 11/236:00 am
ONT
- BKK
2 stops24h 30m
Delta
Fri 12/259:40 am
BKK
- ONT
2 stops21h 33m
Delta
Deal found 7/17![Delta logo]()
$864
This Delta deal was found by Cheapflights users on 7/20. 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 9/296:20 am
ONT
- BKK
2 stops25h 25m
Delta
Thu 3/412:55 am
BKK
- ONT
2 stops30h 17m
Delta
Deal found 7/20![Delta logo]()
$865
This Delta deal was found by Cheapflights users on 7/21. 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.
Tue 8/46:00 am
ONT
- BKK
2 stops29h 05m
Delta
Tue 8/259:40 pm
BKK
- ONT
2 stops39h 05m
Delta
Deal found 7/21![Delta logo]()
$870
This Delta deal was found by Cheapflights users on 7/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:20 am
ONT
- BKK
2 stops25h 25m
Delta
Thu 9/109:50 am
BKK
- ONT
2 stops26h 50m
Delta
Deal found 7/22![Delta logo]()
$871
This Delta deal was found by Cheapflights users on 7/20. 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 11/105:05 pm
ONT
- BKK
2 stops53h 20m
Delta
Wed 11/1812:55 am
BKK
- ONT
2 stops30h 17m
Delta
Deal found 7/20![Delta logo]()
$876
This lol.travel deal was found by Cheapflights users on 7/18. 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
- BKK
2 stops25h 25m
Korean Air
Mon 8/242:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 7/18![Korean Air logo]()
$877
Best flights from Ontario to BangkokDiscover carefully curated flight deals from Ontario to Bangkok that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 22, 2026.
Discover carefully curated flight deals from Ontario to Bangkok that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 22, 2026.
This Korean Air deal was found by Cheapflights users on 7/19. 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 1/187:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Tue 2/912:55 am
BKK
- ONT
2 stops28h 02m
Korean Air
Deal found 7/19![Korean Air logo]()
$826
This Delta deal was found by Cheapflights users on 7/20. 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 10/186:20 am
ONT
- BKK
2 stops28h 45m
Delta
Mon 11/99:40 am
BKK
- ONT
2 stops21h 32m
Delta
Deal found 7/20![Delta logo]()
$865
This United Airlines deal was found by Cheapflights users on 7/17. 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 11/86:00 am
ONT
- BKK
2 stops27h 20m
United Airlines
Mon 11/169:10 am
BKK
- ONT
2 stops23h 45m
United Airlines
Deal found 7/17![United Airlines logo]()
$979
This China Airlines deal was found by Cheapflights users on 7/18. 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 11/1510:50 pm
ONT
- BKK
1 stop26h 55m
China Airlines
Sun 12/62:35 am
BKK
- ONT
1 stop29h 30m
China Airlines
Deal found 7/18![China Airlines logo]()
$1,012
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:55 pm
ONT
- DMK
1 stop34h 20m
Multiple Airlines
Sat 8/296:15 am
DMK
- ONT
1 stop25h 25m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$1,153
This Delta deal was found by Cheapflights users on 7/18. 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 stops29h 05m
Delta
Sun 8/309:50 am
BKK
- ONT
2 stops40h 26m
Delta
Deal found 7/18![Delta logo]()
$870
This United Airlines deal was found by Cheapflights users on 7/22. 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 11/116:00 am
ONT
- BKK
2 stops27h 20m
United Airlines
Wed 11/254:55 pm
BKK
- ONT
2 stops20h 58m
United Airlines
Deal found 7/22![United Airlines logo]()
$998
This Delta deal was found by Cheapflights users on 7/20. 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 1/166:00 am
ONT
- BKK
2 stops24h 30m
Delta
Sun 2/79:40 am
BKK
- ONT
2 stops21h 32m
Delta
Deal found 7/20![Delta logo]()
$909
This China Airlines deal was found by Cheapflights users on 7/20. 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.
Thu 9/2412:10 am
ONT
- BKK
1 stop22h 00m
China Airlines
Fri 3/52:05 pm
BKK
- ONT
1 stop18h 00m
China Airlines
Deal found 7/20![China Airlines logo]()
$1,012
This China Airlines deal was found by Cheapflights users on 7/19. 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 8/1012:45 am
ONT
- BKK
1 stop19h 00m
China Airlines
Thu 8/201:20 pm
BKK
- ONT
1 stop19h 20m
China Airlines
Deal found 7/19![China Airlines logo]()
$1,012
This Delta deal was found by Cheapflights users on 7/18. 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 11/296:00 am
ONT
- BKK
2 stops24h 30m
Delta
Mon 12/79:40 am
BKK
- ONT
2 stops21h 32m
Delta
Deal found 7/18![Delta logo]()
$942
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Wed 9/911:30 pm
ONT
- DMK
1 stop27h 10m
Multiple Airlines
Mon 9/217:25 am
DMK
- ONT
1 stop23h 40m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$1,159
This Delta deal was found by Cheapflights users on 7/17. 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 11/296:00 am
ONT
- BKK
2 stops24h 30m
Delta
Sun 12/279:40 am
BKK
- ONT
2 stops21h 33m
Delta
Deal found 7/17![Delta logo]()
$948
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1411:30 pm
ONT
- DMK
1 stop27h 10m
Multiple Airlines
Thu 11/1211:00 pm
DMK
- ONT
2 stops31h 55m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$1,186
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/711:30 pm
ONT
- DMK
1 stop34h 45m
Multiple Airlines
Sat 10/2411:00 pm
DMK
- ONT
2 stops33h 05m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$1,194
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 9/1211:30 pm
ONT
- DMK
1 stop27h 10m
Multiple Airlines
Tue 9/226:15 am
DMK
- ONT
1 stop25h 45m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$1,198
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 9/1911:30 pm
ONT
- DMK
1 stop27h 10m
Multiple Airlines
Sun 10/1111:00 pm
DMK
- ONT
2 stops33h 00m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$1,202
This Kiwi.com deal was found by Cheapflights users on 7/19. 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.
Mon 8/1712:45 am
ONT
- DMK
1 stop25h 55m
Multiple Airlines
Tue 8/257:25 am
DMK
- ONT
1 stop25h 15m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$1,210
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 8/811:55 pm
ONT
- DMK
1 stop31h 25m
Multiple Airlines
Wed 8/1911:00 pm
DMK
- ONT
2 stops33h 40m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$1,213
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 9/1911:30 pm
ONT
- DMK
1 stop27h 10m
Multiple Airlines
Fri 9/256:15 am
DMK
- ONT
1 stop24h 50m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$1,229
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Wed 9/911:30 pm
ONT
- DMK
1 stop27h 10m
Multiple Airlines
Wed 10/79:30 pm
DMK
- ONT
2 stops34h 30m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$1,231
Last-minute flights from Ontario to BangkokDiscover last-minute flight deals from Ontario to Bangkok. Data last updated July 22, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Bangkok. Data last updated July 22, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/18. 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 8/36:20 am
ONT
- BKK
2 stops27h 15m
Delta
Thu 8/279:50 am
BKK
- ONT
2 stops26h 55m
Delta
Deal found 7/18![Delta logo]()
$820
This Delta deal was found by Cheapflights users on 7/18. 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 8/46:20 am
ONT
- BKK
2 stops25h 25m
Delta
Fri 8/219:50 am
BKK
- ONT
2 stops26h 55m
Delta
Deal found 7/18![Delta logo]()
$865
This Delta deal was found by Cheapflights users on 7/21. 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.
Tue 8/46:00 am
ONT
- BKK
2 stops29h 05m
Delta
Tue 8/259:40 pm
BKK
- ONT
2 stops39h 05m
Delta
Deal found 7/21![Delta logo]()
$870
This Korean Air deal was found by Cheapflights users on 7/18. 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.
Wed 8/56:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Thu 8/132:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 7/18![Korean Air logo]()
$899
This Delta deal was found by Cheapflights users on 7/18. 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 8/66:20 am
ONT
- BKK
2 stops25h 25m
Delta
Thu 8/209:40 pm
BKK
- ONT
2 stops39h 05m
Delta
Deal found 7/18![Delta logo]()
$894
This lol.travel deal was found by Cheapflights users on 7/18. 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.
Sun 8/96:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Tue 8/259:40 pm
BKK
- ONT
2 stops33h 41m
Korean Air
Deal found 7/18![Korean Air logo]()
$893
This Korean Air deal was found by Cheapflights users on 7/17. 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 8/106:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Tue 8/189:40 pm
BKK
- ONT
2 stops39h 05m
Korean Air
Deal found 7/17![Korean Air logo]()
$826
This lol.travel deal was found by Cheapflights users on 7/18. 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
- BKK
2 stops25h 25m
Korean Air
Mon 8/242:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 7/18![Korean Air logo]()
$877
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:55 pm
ONT
- DMK
1 stop34h 20m
Multiple Airlines
Sat 8/296:15 am
DMK
- ONT
1 stop25h 25m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$1,153
This Kissandfly.com deal was found by Cheapflights users on 7/21. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Tue 9/159:40 pm
BKK
- ONT
2 stops33h 39m
Korean Air
Deal found 7/21![Korean Air logo]()
$895
This Delta deal was found by Cheapflights users on 7/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:20 am
ONT
- BKK
2 stops27h 15m
Delta
Tue 9/89:50 am
BKK
- ONT
2 stops26h 14m
Delta
Deal found 7/22![Delta logo]()
$871
This Korean Air deal was found by Cheapflights users on 7/21. 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.
Mon 8/316:20 am
ONT
- BKK
2 stops28h 45m
Korean Air
Wed 9/22:35 am
BKK
- ONT
2 stops34h 10m
Korean Air
Deal found 7/21![Korean Air logo]()
$876
One-way flights from Ontario to BangkokSearch for one-way flight options from Ontario to Bangkok. Find affordable one-way fares based on user searches. Data last updated July 22, 2026.
Search for one-way flight options from Ontario to Bangkok. Find affordable one-way fares based on user searches. Data last updated July 22, 2026.
This Kissandfly.com deal was found by Cheapflights users on 7/18. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Deal found 7/18![Korean Air logo]()
$410
This Delta deal was found by Cheapflights users on 7/17. 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 11/36:00 am
ONT
- BKK
2 stops24h 30m
Delta
Deal found 7/17![Delta logo]()
$420
This Korean Air deal was found by Cheapflights users on 7/19. 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 11/36:20 am
ONT
- BKK
2 stops24h 10m
Korean Air
Deal found 7/19![Korean Air logo]()
$421
This Korean Air deal was found by Cheapflights users on 7/17. 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 11/26:20 am
ONT
- BKK
2 stops24h 10m
Korean Air
Deal found 7/17![Korean Air logo]()
$423
This Delta deal was found by Cheapflights users on 7/17. 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 11/66:20 am
ONT
- BKK
2 stops27h 25m
Delta
Deal found 7/17![Delta logo]()
$428
This Korean Air deal was found by Cheapflights users on 7/20. 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 10/316:20 am
ONT
- BKK
2 stops28h 25m
Korean Air
Deal found 7/20![Korean Air logo]()
$431
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:27 pm
ONT
- BKK
3 stops50h 43m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$439
This Delta deal was found by Cheapflights users on 7/21. 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.
Mon 8/36:00 am
ONT
- BKK
2 stops27h 35m
Delta
Deal found 7/21![Delta logo]()
$445
This Delta deal was found by Cheapflights users on 7/21. 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.
Sun 8/166:20 am
ONT
- BKK
2 stops27h 15m
Delta
Deal found 7/21![Delta logo]()
$453
This Korean Air deal was found by Cheapflights users on 7/22. 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 1/167:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Deal found 7/22![Korean Air logo]()
$455
This Korean Air deal was found by Cheapflights users on 7/22. 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 11/76:20 am
ONT
- BKK
2 stops24h 10m
Korean Air
Deal found 7/22![Korean Air logo]()
$456
This Kiwi.com deal was found by Cheapflights users on 7/19. 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.
Mon 8/108:58 am
ONT
- DMK
3 stops49h 17m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$562
Find flight deals from Ontario to Bangkok
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Bangkok (TH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 22, 2026.
Round-trip from | $778 (lastminute.com) |
|---|---|
One-way from | $410 (Kissandfly.com) |
Popular in | December |
Cheapest in | January |
Average price | $1,107 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Bangkok 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 July 22, 2026.
Use the filters below to find and compare flights from Ontario to Bangkok that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 1/18
7:00 am-9:30 pm
2 stops23h 30m
Bangkok Suvarnabhumi
Tue 2/9
12:55 am-1:57 pm
2 stops28h 02m
$826
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 10/18
6:20 am-1:05 am
2 stops28h 45m
Bangkok Suvarnabhumi
Mon 11/9
9:40 am-4:12 pm
2 stops21h 32m
$865
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 8/18
6:00 am-1:05 am
2 stops29h 05m
Bangkok Suvarnabhumi
Sun 8/30
9:50 am-12:16 pm
2 stops40h 26m
$870
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sat 1/16
6:00 am-9:30 pm
2 stops24h 30m
Bangkok Suvarnabhumi
Sun 2/7
9:40 am-4:12 pm
2 stops21h 32m
$909
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 11/29
6:00 am-9:30 pm
2 stops24h 30m
Bangkok Suvarnabhumi
Mon 12/7
9:40 am-4:12 pm
2 stops21h 32m
$942
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 11/29
6:00 am-9:30 pm
2 stops24h 30m
Bangkok Suvarnabhumi
Sun 12/27
9:40 am-4:13 pm
2 stops21h 33m
$948
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 11/8
6:00 am-12:20 am
2 stops27h 20m
Bangkok Suvarnabhumi
Mon 11/16
9:10 am-5:55 pm
2 stops23h 45m
$979
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 11/11
6:00 am-12:20 am
2 stops27h 20m
Bangkok Suvarnabhumi
Wed 11/25
4:55 pm-10:53 pm
2 stops20h 58m
$998
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 11/15
10:50 pm-4:45 pm
1 stop26h 55m
Bangkok Suvarnabhumi
Sun 12/6
2:35 am-5:05 pm
1 stop29h 30m
$1,012
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Thu 9/24
12:10 am-12:10 pm
1 stop22h 00m
Bangkok Suvarnabhumi
Fri 3/5
2:05 pm-5:05 pm
1 stop18h 00m
$1,012
Showing 1-10 of 41 resultsSorted by cheapest first
Best time to book a flight from Ontario to Bangkok
Have a flexible travel schedule? Discover the best time to fly to Bangkok from Ontario with our price prediction graph.
ONT-TH1
ONT-BKK
ONT-DMK
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 Bangkok
ONT-TH1
ONT-BKK
ONT-DMK
What is the cheapest month to book a flight from Ontario to Bangkok?
Currently, January is the cheapest month in which you can book a flight from Ontario to Bangkok (average of $764). Flying from Ontario to Bangkok in December is currently the most expensive (average of $1,528). 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 much does it cost to fly round-trip from Ontario to Bangkok?
How far ahead should I book a flight from Ontario to Bangkok?
Booking 28 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Bangkok. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Bangkok
Get insights into the airlines that provide service to Bangkok. 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 Bangkok. Reviews last updated July 22, 2026.
Read through reviews of airlines operating flights from Ontario to Bangkok, such as STARLUX Airlines,Korean Air, andChina Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
9.1
Entertainment
8.7
Comfort
8.9
Food
8.6
Overall
8.8
Boarding
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.1
Entertainment
8.7
Comfort
8.9
Food
8.6
Overall
8.8
Boarding
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.1
Entertainment
8.7
Comfort
8.9
Food
8.6
Overall
8.8
Boarding
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.1
Entertainment
8.7
Comfort
8.9
Food
8.6
Overall
8.8
Boarding
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.1
Entertainment
8.7
Comfort
8.9
Food
8.6
Overall
8.8
Boarding
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 Bangkok. 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
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Popular flights
Alternative routes for Ontario to Bangkok
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Bangkok by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Bangkok by cabin class
Find flights from Ontario to Bangkok, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Bangkok flights
Browse other Ontario and Bangkok flight options. Last updated on July 22, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on July 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Ontario to Bangkok
Discover the top 4 airlines that operate flights from Ontario to Bangkok. 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 July 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$427 | Average$666 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$455 | Average$813 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$718 | Average$864 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$763 | Average$831 | FlexibilityNo cancel fee | On-timeN/A |