$432+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Jul 13 — Jul 201
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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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 Bangkok
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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 13, 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 13, 2026.
This SmartFares deal was found by Cheapflights users on 6/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Mon 11/1612:55 am
BKK
- ONT
2 stops31h 22m
Korean Air
Deal found 6/9![Korean Air logo]()
$880
This Delta deal was found by Cheapflights users on 6/9. 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 10/157:00 am
ONT
- BKK
2 stops24h 45m
Delta
Thu 10/299:40 am
BKK
- ONT
2 stops21h 37m
Delta
Deal found 6/9![Delta logo]()
$889
This Delta deal was found by Cheapflights users on 6/10. 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 11/25:05 pm
ONT
- BKK
2 stops37h 25m
Delta
Thu 12/39:40 am
BKK
- ONT
2 stops22h 37m
Delta
Deal found 6/10![Delta logo]()
$894
This Korean Air deal was found by Cheapflights users on 6/11. 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
Tue 4/611:30 pm
BKK
- ONT
2 stops31h 47m
Korean Air
Deal found 6/11![Korean Air logo]()
$895
This Delta deal was found by Cheapflights users on 6/12. 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 11/85:50 pm
ONT
- BKK
2 stops60h 40m
Delta
Wed 11/189:40 am
BKK
- ONT
2 stops22h 37m
Delta
Deal found 6/12![Delta logo]()
$896
This Delta deal was found by Cheapflights users on 6/12. 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 11/811:55 am
ONT
- BKK
2 stops66h 35m
Delta
Sun 11/1512:55 am
BKK
- ONT
2 stops50h 35m
Delta
Deal found 6/12![Delta logo]()
$901
This SmartFares deal was found by Cheapflights users on 6/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Sun 11/1511:15 pm
BKK
- ONT
2 stops33h 02m
Korean Air
Deal found 6/9![Korean Air logo]()
$911
This Korean Air deal was found by Cheapflights users on 6/11. 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
Tue 5/411:30 pm
BKK
- ONT
2 stops31h 47m
Korean Air
Deal found 6/11![Korean Air logo]()
$912
This Delta deal was found by Cheapflights users on 6/13. 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 7/316:20 am
ONT
- BKK
2 stops41h 15m
Delta
Wed 9/29:50 am
BKK
- ONT
2 stops26h 33m
Delta
Deal found 6/13![Delta logo]()
$920
This Delta deal was found by Cheapflights users on 6/10. 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 11/155:50 pm
ONT
- BKK
2 stops39h 55m
Delta
Fri 4/309:40 pm
BKK
- ONT
2 stops40h 08m
Delta
Deal found 6/10![Delta logo]()
$925
This Delta deal was found by Cheapflights users on 6/13. 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 8/15:10 pm
ONT
- BKK
2 stops41h 55m
Delta
Wed 9/29:50 am
BKK
- ONT
2 stops26h 33m
Delta
Deal found 6/13![Delta logo]()
$926
This Delta deal was found by Cheapflights users on 6/12. 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 11/85:50 pm
ONT
- BKK
2 stops60h 40m
Delta
Thu 11/129:30 pm
BKK
- ONT
2 stops33h 42m
Delta
Deal found 6/12![Delta logo]()
$927
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 13, 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 13, 2026.
This Delta deal was found by Cheapflights users on 6/12. 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 11/177:00 am
ONT
- BKK
2 stops39h 25m
Delta
Tue 1/199:40 am
BKK
- ONT
2 stops28h 03m
Delta
Deal found 6/12![Delta logo]()
$889
This United Airlines deal was found by Cheapflights users on 6/11. 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 10/148:03 am
ONT
- BKK
2 stops25h 52m
United Airlines
Wed 11/184:55 pm
BKK
- ONT
2 stops21h 11m
United Airlines
Deal found 6/11![United Airlines logo]()
$1,017
This Korean Air deal was found by Cheapflights users on 6/12. 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
Sun 1/1711:15 pm
BKK
- ONT
2 stops38h 28m
Korean Air
Deal found 6/12![Korean Air logo]()
$1,026
This Mytrip deal was found by Cheapflights users on 6/13. 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 stops24h 00m
Multiple Airlines
Sun 10/186:40 am
DMK
- ONT
2 stops25h 20m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$1,250
This Delta deal was found by Cheapflights users on 6/10. 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 11/47:00 am
ONT
- BKK
2 stops39h 25m
Delta
Thu 11/269:40 am
BKK
- ONT
2 stops21h 32m
Delta
Deal found 6/10![Delta logo]()
$889
This Delta deal was found by Cheapflights users on 6/10. 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 10/197:00 am
ONT
- BKK
2 stops24h 45m
Delta
Thu 10/229:50 am
BKK
- ONT
2 stops21h 27m
Delta
Deal found 6/10![Delta logo]()
$889
This United Airlines deal was found by Cheapflights users on 6/13. 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 11/186:00 am
ONT
- BKK
2 stops38h 25m
United Airlines
Mon 11/304:55 pm
BKK
- ONT
2 stops34h 25m
United Airlines
Deal found 6/13![United Airlines logo]()
$1,022
This Korean Air deal was found by Cheapflights users on 6/13. 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 stops41h 15m
Korean Air
Thu 7/232:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/13![Korean Air logo]()
$1,032
This Delta deal was found by Cheapflights users on 6/10. 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 11/176:00 am
ONT
- BKK
2 stops24h 30m
Delta
Wed 2/179:30 pm
BKK
- ONT
2 stops40h 13m
Delta
Deal found 6/10![Delta logo]()
$889
This United Airlines deal was found by Cheapflights users on 6/9. 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 9/207:13 pm
ONT
- BKK
2 stops24h 22m
United Airlines
Tue 10/209:35 am
BKK
- ONT
2 stops24h 56m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,035
This Delta deal was found by Cheapflights users on 6/11. 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 10/255:50 pm
ONT
- BKK
2 stops40h 55m
Delta
Sun 11/89:40 am
BKK
- ONT
2 stops29h 08m
Delta
Deal found 6/11![Delta logo]()
$926
This United Airlines deal was found by Cheapflights users on 6/9. 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 10/226:00 am
ONT
- BKK
2 stops27h 55m
United Airlines
Sun 11/84:55 pm
BKK
- ONT
2 stops21h 11m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,048
This Mytrip deal was found by Cheapflights users on 6/12. 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 10/412:10 am
ONT
- DMK
2 stops24h 00m
Multiple Airlines
Tue 10/136:40 am
DMK
- ONT
2 stops25h 20m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$1,274
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Tue 9/88:33 pm
ONT
- DMK
2 stops24h 52m
Multiple Airlines
Sun 9/279:40 am
DMK
- ONT
1 stop22h 20m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$1,343
This Delta deal was found by Cheapflights users on 6/11. 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 7/136:20 am
ONT
- BKK
2 stops28h 45m
Delta
Sat 7/252:35 am
BKK
- ONT
2 stops34h 17m
Delta
Deal found 6/11![Delta logo]()
$1,045
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 stop34h 20m
Multiple Airlines
Sun 8/2311:00 pm
DMK
- ONT
2 stops32h 40m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$1,354
This Kiwi.com deal was found by Cheapflights users on 6/11. 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
Mon 9/286:15 am
DMK
- ONT
1 stop24h 50m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,431
This Mytrip deal was found by Cheapflights users on 6/11. 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 9/812:45 am
ONT
- DMK
2 stops32h 20m
Multiple Airlines
Mon 10/126:15 am
DMK
- ONT
1 stop24h 50m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,432
This Mytrip deal was found by Cheapflights users on 6/10. 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 9/212:45 am
ONT
- DMK
2 stops23h 25m
Multiple Airlines
Mon 9/76:40 am
DMK
- ONT
2 stops24h 25m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$1,434
This Mytrip deal was found by Cheapflights users on 6/11. 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 stops23h 30m
Multiple Airlines
Sat 10/247:25 am
DMK
- ONT
1 stop23h 40m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,448
This Mytrip deal was found by Cheapflights users on 6/11. 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 7/912:45 am
ONT
- DMK
2 stops23h 25m
Multiple Airlines
Fri 7/177:30 am
DMK
- ONT
2 stops25h 10m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$1,533
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 8/78:58 am
ONT
- DMK
2 stops22h 22m
Multiple Airlines
Sat 8/227:25 am
DMK
- ONT
1 stop24h 15m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$1,540
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Mon 9/2812:10 am
ONT
- DMK
2 stops27h 25m
Multiple Airlines
Tue 10/207:25 am
DMK
- ONT
1 stop24h 35m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$1,541
Last-minute flights from Ontario to BangkokDiscover last-minute flight deals from Ontario to Bangkok. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Bangkok. Data last updated June 13, 2026 and is based on user searches.
This Korean Air deal was found by Cheapflights users on 6/13. 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 stops25h 25m
Korean Air
Wed 7/292:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/13![Korean Air logo]()
$1,007
This SmartFares deal was found by Cheapflights users on 6/9. 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 SmartFares 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
Wed 7/2911:30 pm
BKK
- ONT
2 stops31h 51m
Korean Air
Deal found 6/9![Korean Air logo]()
$961
This Korean Air deal was found by Cheapflights users on 6/10. 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 stops28h 45m
Korean Air
Sat 7/252:35 am
BKK
- ONT
2 stops34h 17m
Korean Air
Deal found 6/10![Korean Air logo]()
$1,001
This Delta deal was found by Cheapflights users on 6/8. 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 7/145:10 pm
ONT
- BKK
2 stops41h 55m
Delta
Tue 10/1311:30 pm
BKK
- ONT
2 stops37h 13m
Delta
Deal found 6/8![Delta logo]()
$895
This Korean Air deal was found by Cheapflights users on 6/10. 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
Wed 7/2911:30 pm
BKK
- ONT
2 stops31h 51m
Korean Air
Deal found 6/10![Korean Air logo]()
$976
This Korean Air deal was found by Cheapflights users on 6/10. 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 stops28h 45m
Korean Air
Mon 7/2711:30 pm
BKK
- ONT
2 stops31h 51m
Korean Air
Deal found 6/10![Korean Air logo]()
$984
This Korean Air deal was found by Cheapflights users on 6/10. 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
Sat 8/1511:30 pm
BKK
- ONT
2 stops31h 51m
Korean Air
Deal found 6/10![Korean Air logo]()
$945
This Delta deal was found by Cheapflights users on 6/11. 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 7/296:00 am
ONT
- BKK
2 stops25h 45m
Delta
Wed 10/149:50 am
BKK
- ONT
2 stops21h 27m
Delta
Deal found 6/11![Delta logo]()
$889
This Korean Air deal was found by Cheapflights users on 6/10. 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 7/296:20 am
ONT
- BKK
2 stops41h 15m
Korean Air
Sat 8/82:35 am
BKK
- ONT
2 stops34h 10m
Korean Air
Deal found 6/10![Korean Air logo]()
$926
This Delta deal was found by Cheapflights users on 6/13. 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 7/316:20 am
ONT
- BKK
2 stops28h 45m
Delta
Thu 8/279:50 am
BKK
- ONT
2 stops27h 44m
Delta
Deal found 6/13![Delta logo]()
$920
This Delta deal was found by Cheapflights users on 6/13. 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 7/316:20 am
ONT
- BKK
2 stops41h 15m
Delta
Thu 9/32:35 am
BKK
- ONT
2 stops34h 10m
Delta
Deal found 6/13![Delta logo]()
$951
This Korean Air deal was found by Cheapflights users on 6/10. 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 7/316:20 am
ONT
- BKK
2 stops41h 15m
Korean Air
Sat 8/82:35 am
BKK
- ONT
2 stops34h 10m
Korean Air
Deal found 6/10![Korean Air logo]()
$957
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 13, 2026.
Search for one-way flight options from Ontario to Bangkok. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This WhyPayMore deal was found by Cheapflights users on 6/13. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Deal found 6/13![Korean Air logo]()
$432
This SmartFares deal was found by Cheapflights users on 6/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Deal found 6/9![Korean Air logo]()
$437
This SmartFares deal was found by Cheapflights users on 6/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Deal found 6/13![Korean Air logo]()
$446
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/206:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Deal found 6/11![Korean Air logo]()
$453
This Delta deal was found by Cheapflights users on 6/9. 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 7/156:20 am
ONT
- BKK
2 stops28h 45m
Delta
Deal found 6/9![Delta logo]()
$458
This Korean Air deal was found by Cheapflights users on 6/11. 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 11/117:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Deal found 6/11![Korean Air logo]()
$460
This Delta deal was found by Cheapflights users on 6/11. 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 7/96:20 am
ONT
- BKK
2 stops28h 45m
Delta
Deal found 6/11![Delta logo]()
$483
This Delta deal was found by Cheapflights users on 6/10. 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 7/811:59 am
ONT
- BKK
2 stops47h 06m
Delta
Deal found 6/10![Delta logo]()
$495
This SmartFares deal was found by Cheapflights users on 6/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:45 am
ONT
- BKK
1 stop19h 00m
China Airlines
Deal found 6/13![China Airlines logo]()
$499
This Flightnetwork deal was found by Cheapflights users on 6/12. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:50 pm
ONT
- BKK
1 stop26h 55m
China Airlines
Deal found 6/12![China Airlines logo]()
$504
This oojo deal was found by Cheapflights users on 6/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:50 pm
ONT
- BKK
1 stop23h 15m
China Airlines
Deal found 6/12![China Airlines logo]()
$505
This Trip.com deal was found by Cheapflights users on 6/13. 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.
Wed 9/3012:10 am
ONT
- DMK
1 stop31h 10m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$595
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 13, 2026.
Round-trip from | $880 (SmartFares) |
|---|---|
One-way from | $432 (WhyPayMore) |
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 13, 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
Tue 11/17
7:00 am-1:25 pm
2 stops39h 25m
Bangkok Suvarnabhumi
Tue 1/19
9:40 am-10:43 pm
2 stops28h 03m
$889
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 11/4
7:00 am-1:25 pm
2 stops39h 25m
Bangkok Suvarnabhumi
Thu 11/26
9:40 am-4:12 pm
2 stops21h 32m
$889
Quickest round-trip
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 10/19
7:00 am-9:45 pm
2 stops24h 45m
Bangkok Suvarnabhumi
Thu 10/22
9:50 am-5:17 pm
2 stops21h 27m
$889
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 11/17
6:00 am-9:30 pm
2 stops24h 30m
Bangkok Suvarnabhumi
Wed 2/17
9:30 pm-10:43 pm
2 stops40h 13m
$889
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 10/25
5:50 pm-12:45 am
2 stops40h 55m
Bangkok Suvarnabhumi
Sun 11/8
9:40 am-11:48 pm
2 stops29h 08m
$926
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 10/14
8:03 am-11:55 pm
2 stops25h 52m
Bangkok Suvarnabhumi
Wed 11/18
4:55 pm-11:06 pm
2 stops21h 11m
$1,017
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 11/18
6:00 am-11:25 am
2 stops38h 25m
Bangkok Suvarnabhumi
Mon 11/30
4:55 pm-12:20 pm
2 stops34h 25m
$1,022
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 12/7
7:00 am-9:30 pm
2 stops23h 30m
Bangkok Suvarnabhumi
Sun 1/17
11:15 pm-10:43 pm
2 stops38h 28m
$1,026
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sat 7/11
6:20 am-1:35 pm
2 stops41h 15m
Bangkok Suvarnabhumi
Thu 7/23
2:35 am-5:21 pm
2 stops28h 46m
$1,032
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 9/20
7:13 pm-9:35 am
2 stops24h 22m
Bangkok Suvarnabhumi
Tue 10/20
9:35 am-8:31 pm
2 stops24h 56m
$1,035
Showing 1-10 of 44 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 13, 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.
Comfort
8.9
Boarding
8.9
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.6
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Comfort
8.9
Boarding
8.9
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.6
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Comfort
8.9
Boarding
8.9
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.6
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Comfort
8.9
Boarding
8.9
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.6
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Comfort
8.9
Boarding
8.9
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.6
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - 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
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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 June 13, 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 13, 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 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$457 | Average$660 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$616 | Average$805 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$717 | Average$831 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$763 | Average$827 | FlexibilityNo cancel fee | On-timeN/A |