$425+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Jul 24 — Jul 311
Round-trip
1 adult, Economy
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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 June 24, 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 June 24, 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 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.
Mon 11/167:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Sun 12/2011:15 pm
BKK
- ONT
2 stops32h 41m
Korean Air
Deal found 6/21![Korean Air logo]()
$837
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:20 am
ONT
- BKK
2 stops25h 25m
Delta
Tue 10/139:40 pm
BKK
- ONT
2 stops33h 37m
Delta
Deal found 6/22![Delta logo]()
$839
This Delta deal was found by Cheapflights users on 6/20. 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.
Thu 10/227:00 am
ONT
- BKK
2 stops28h 05m
Delta
Sun 11/111:15 pm
BKK
- ONT
2 stops38h 28m
Delta
Deal found 6/20![Delta logo]()
$840
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
Mon 12/2112:55 am
BKK
- ONT
2 stops31h 01m
Korean Air
Deal found 6/24![Korean Air logo]()
$844
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:05 pm
ONT
- BKK
2 stops40h 30m
Delta
Mon 9/142:35 am
BKK
- ONT
2 stops34h 05m
Delta
Deal found 6/22![Delta logo]()
$845
This lol.travel deal was found by Cheapflights users on 6/19. 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 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
Tue 8/2511:30 pm
BKK
- ONT
2 stops31h 51m
Korean Air
Deal found 6/19![Korean Air logo]()
$849
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.
Sat 11/141:00 pm
ONT
- BKK
2 stops41h 30m
Delta
Thu 12/249:40 am
BKK
- ONT
2 stops40h 36m
Delta
Deal found 6/21![Delta logo]()
$882
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.
Mon 11/167:00 am
ONT
- BKK
2 stops25h 20m
Korean Air
Thu 12/249:30 pm
BKK
- ONT
2 stops34h 26m
Korean Air
Deal found 6/21![Korean Air logo]()
$887
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.
Fri 8/286:00 am
ONT
- BKK
2 stops25h 45m
Delta
Thu 9/179:50 am
BKK
- ONT
2 stops27h 57m
Delta
Deal found 6/23![Delta logo]()
$889
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 11/67:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Wed 11/2512:55 am
BKK
- ONT
2 stops31h 22m
Korean Air
Deal found 6/24![Korean Air logo]()
$894
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 June 24, 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 June 24, 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 6/23. 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 11/57:00 am
ONT
- BKK
2 stops26h 45m
Korean Air
Wed 11/2512:55 am
BKK
- ONT
2 stops31h 22m
Korean Air
Deal found 6/23![Korean Air logo]()
$845
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 Mytrip deal was found by Cheapflights users on 6/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:45 am
ONT
- DMK
1 stop25h 55m
Multiple Airlines
Sun 8/309:40 am
DMK
- ONT
1 stop23h 00m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$1,148
This Delta deal was found by Cheapflights users on 6/20. 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 8/46:20 am
ONT
- BKK
2 stops25h 25m
Delta
Wed 8/2611:30 pm
BKK
- ONT
2 stops38h 04m
Delta
Deal found 6/20![Delta logo]()
$839
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 9/266:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Mon 10/122:35 am
BKK
- ONT
2 stops28h 42m
Korean Air
Deal found 6/22![Korean Air logo]()
$895
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/185:05 pm
ONT
- BKK
2 stops42h 00m
Delta
Mon 11/99:30 pm
BKK
- ONT
2 stops40h 13m
Delta
Deal found 6/22![Delta logo]()
$845
This Korean Air deal was found by Cheapflights users on 6/19. 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 7/146:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Sat 7/252:35 am
BKK
- ONT
2 stops34h 17m
Korean Air
Deal found 6/19![Korean Air logo]()
$909
This Delta deal was found by Cheapflights users on 6/20. 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 9/96:20 am
ONT
- BKK
2 stops25h 25m
Delta
Mon 9/219:50 am
BKK
- ONT
2 stops26h 50m
Delta
Deal found 6/20![Delta logo]()
$889
This Korean Air deal was found by Cheapflights users on 6/19. 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 7/146:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Tue 7/282:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/19![Korean Air logo]()
$935
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
2 stops32h 55m
Multiple Airlines
Sat 10/247:30 am
DMK
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,169
This Korean Air deal was found by Cheapflights users on 6/19. 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 7/76:20 am
ONT
- BKK
2 stops28h 45m
Korean Air
Tue 7/1411:30 pm
BKK
- ONT
2 stops37h 22m
Korean Air
Deal found 6/19![Korean Air logo]()
$956
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 12/47:00 am
ONT
- BKK
2 stops39h 25m
Delta
Sat 12/129:30 pm
BKK
- ONT
2 stops40h 13m
Delta
Deal found 6/24![Delta logo]()
$964
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:10 am
ONT
- DMK
1 stop26h 30m
Multiple Airlines
Sat 10/316:15 am
DMK
- ONT
1 stop25h 35m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$1,178
This Kiwi.com 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 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
Sun 8/309:40 am
DMK
- ONT
1 stop23h 00m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$1,181
This Mytrip deal was found by Cheapflights users on 6/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/912:45 am
ONT
- DMK
2 stops26h 50m
Multiple Airlines
Sat 8/157:30 am
DMK
- ONT
2 stops25h 10m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$1,230
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:45 am
ONT
- DMK
1 stop25h 55m
Multiple Airlines
Tue 9/157:25 am
DMK
- ONT
1 stop25h 15m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$1,257
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Wed 10/216:15 am
DMK
- ONT
1 stop25h 45m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$1,275
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2911:55 pm
ONT
- DMK
1 stop26h 45m
Multiple Airlines
Sat 9/126:15 am
DMK
- ONT
1 stop24h 50m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$1,283
This Mytrip deal was found by Cheapflights users on 6/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/112:45 am
ONT
- DMK
2 stops26h 50m
Multiple Airlines
Sat 8/157:30 am
DMK
- ONT
2 stops25h 10m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$1,295
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/912:10 am
ONT
- DMK
2 stops32h 55m
Multiple Airlines
Sat 10/247:30 am
DMK
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$1,305
Last-minute flights from Ontario to BangkokDiscover last-minute flight deals from Ontario to Bangkok. Data last updated June 24, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Bangkok. Data last updated June 24, 2026 and is based on user searches.
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 7/91:00 pm
ONT
- BKK
2 stops44h 35m
Delta
Sat 7/1811:30 pm
BKK
- ONT
2 stops47h 17m
Delta
Deal found 6/21![Delta logo]()
$951
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.
Sat 7/116:20 am
ONT
- BKK
2 stops28h 45m
Korean Air
Fri 7/172:35 am
BKK
- ONT
2 stops34h 17m
Korean Air
Deal found 6/24![Korean Air logo]()
$958
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 6/19. 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 7/146:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Tue 7/282:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/19![Korean Air logo]()
$935
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 7/144:20 pm
ONT
- BKK
2 stops27h 15m
United Airlines
Tue 8/257:00 am
BKK
- ONT
2 stops25h 11m
United Airlines
Deal found 6/22![United Airlines logo]()
$955
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 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.
Thu 7/166:20 am
ONT
- BKK
2 stops28h 45m
Korean Air
Mon 8/311:30 pm
BKK
- ONT
2 stops31h 51m
Korean Air
Deal found 6/22![Korean Air logo]()
$956
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 6/23. 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 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 BangkokSearch for one-way flight options from Ontario to Bangkok. Find affordable one-way fares based on user searches. Data last updated June 24, 2026.
Search for one-way flight options from Ontario to Bangkok. Find affordable one-way fares based on user searches. Data last updated June 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Fri 11/137:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Deal found 6/20![Korean Air logo]()
$425
This Korean Air deal was found by Cheapflights users on 6/20. 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.
Mon 11/167:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Deal found 6/20![Korean Air logo]()
$426
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 9/136:20 am
ONT
- BKK
2 stops27h 15m
Delta
Deal found 6/23![Delta logo]()
$428
This Kissandfly.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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/276:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Deal found 6/22![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 6/22. 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.
Fri 7/101:00 pm
ONT
- BKK
2 stops44h 35m
Delta
Deal found 6/22![Delta logo]()
$439
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 7/91:00 pm
ONT
- BKK
2 stops46h 05m
Delta
Deal found 6/23![Delta logo]()
$440
This Delta deal was found by Cheapflights users on 6/19. 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 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 stops29h 05m
Delta
Deal found 6/19![Delta logo]()
$443
This Korean Air deal was found by Cheapflights users on 6/19. 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 8/246:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Deal found 6/19![Korean Air logo]()
$446
This Delta deal was found by Cheapflights users on 6/20. 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 11/147:00 am
ONT
- BKK
2 stops26h 45m
Delta
Deal found 6/20![Delta logo]()
$453
This Delta deal was found by Cheapflights users on 6/20. 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 8/25:10 pm
ONT
- BKK
2 stops41h 55m
Delta
Deal found 6/20![Delta logo]()
$454
This Trip.com deal was found by Cheapflights users on 6/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:45 am
ONT
- DMK
1 stop30h 35m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$551
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 June 24, 2026.
Round-trip from | $830 (lol.travel) |
|---|---|
One-way from | $425 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $1,400 |
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 June 24, 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
Quickest 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
Tue 8/4
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Wed 8/26
11:30 pm-11:34 pm
2 stops38h 04m
$839
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Thu 11/5
7:00 am-12:45 am
2 stops26h 45m
Bangkok Suvarnabhumi
Wed 11/25
12:55 am-5:17 pm
2 stops31h 22m
$845
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 10/18
5:05 pm-1:05 am
2 stops42h 00m
Bangkok Suvarnabhumi
Mon 11/9
9:30 pm-10:43 pm
2 stops40h 13m
$845
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 9/9
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Mon 9/21
9:50 am-10:40 pm
2 stops26h 50m
$889
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sat 9/26
6:20 am-11:35 pm
2 stops27h 15m
Bangkok Suvarnabhumi
Mon 10/12
2:35 am-5:17 pm
2 stops28h 42m
$895
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 7/14
6:20 am-11:35 pm
2 stops27h 15m
Bangkok Suvarnabhumi
Sat 7/25
2:35 am-10:52 pm
2 stops34h 17m
$909
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 7/14
6:20 am-11:35 pm
2 stops27h 15m
Bangkok Suvarnabhumi
Tue 7/28
2:35 am-5:21 pm
2 stops28h 46m
$935
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
Tue 7/7
6:20 am-1:05 am
2 stops28h 45m
Bangkok Suvarnabhumi
Tue 7/14
11:30 pm-10:52 pm
2 stops37h 22m
$956
Showing 1-10 of 42 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, July is the cheapest month in which you can book a flight from Ontario to Bangkok (average of $457). Flying from Ontario to Bangkok 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 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 81 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 June 24, 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.
Overall
8.9
Boarding
8.9
Comfort
8.9
Crew
9.2
Food
8.7
Entertainment
8.8
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.9
Boarding
8.9
Comfort
8.9
Crew
9.2
Food
8.7
Entertainment
8.8
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.9
Boarding
8.9
Comfort
8.9
Crew
9.2
Food
8.7
Entertainment
8.8
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.9
Boarding
8.9
Comfort
8.9
Crew
9.2
Food
8.7
Entertainment
8.8
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.9
Boarding
8.9
Comfort
8.9
Crew
9.2
Food
8.7
Entertainment
8.8
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
Flights by cabin class
Other flight options
Other flights from Ontario
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 June 24, 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 June 24, 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 June 24, 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$835 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$763 | Average$830 | FlexibilityNo cancel fee | On-timeN/A |