$427+ 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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
May 24 — May 311
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 April 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 April 24, 2026.
This SmartFares deal was found by Cheapflights users on 4/19. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:00 am
ONT
- BKK
2 stops25h 20m
Korean Air
Mon 12/711:15 pm
BKK
- ONT
2 stops33h 02m
Korean Air
Deal found 4/19![Korean Air logo]()
$887
This Korean Air deal was found by Cheapflights users on 4/20. 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 4/307:00 am
ONT
- BKK
2 stops24h 45m
Korean Air
Mon 5/252:35 am
BKK
- ONT
2 stops28h 35m
Korean Air
Deal found 4/20![Korean Air logo]()
$925
This Delta deal was found by Cheapflights users on 4/21. 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 11/26:00 am
ONT
- BKK
2 stops24h 30m
Delta
Wed 11/259:40 am
BKK
- ONT
2 stops22h 37m
Delta
Deal found 4/21![Delta logo]()
$932
This Korean Air deal was found by Cheapflights users on 4/20. 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.
Tue 11/177:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Tue 11/2412:55 am
BKK
- ONT
2 stops31h 22m
Korean Air
Deal found 4/20![Korean Air logo]()
$937
This Delta deal was found by Cheapflights users on 4/21. 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 8/91:00 pm
ONT
- BKK
2 stops46h 05m
Delta
Tue 11/1712:55 am
BKK
- ONT
2 stops31h 22m
Delta
Deal found 4/21![Delta logo]()
$938
This Delta deal was found by Cheapflights users on 4/21. 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 11/126:00 am
ONT
- BKK
2 stops24h 30m
Delta
Tue 12/19:40 am
BKK
- ONT
2 stops40h 36m
Delta
Deal found 4/21![Delta logo]()
$939
This Delta deal was found by Cheapflights users on 4/21. 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.
Wed 11/115:05 pm
ONT
- BKK
2 stops37h 25m
Delta
Tue 12/19:40 am
BKK
- ONT
2 stops40h 36m
Delta
Deal found 4/21![Delta logo]()
$945
This Delta deal was found by Cheapflights users on 4/21. 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 11/1011:55 am
ONT
- BKK
2 stops66h 35m
Delta
Tue 12/19:40 am
BKK
- ONT
2 stops40h 36m
Delta
Deal found 4/21![Delta logo]()
$946
This Delta deal was found by Cheapflights users on 4/19. 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.
Tue 5/56:00 am
ONT
- BKK
2 stops27h 35m
Delta
Wed 5/2011:30 pm
BKK
- ONT
2 stops31h 40m
Delta
Deal found 4/19![Delta logo]()
$955
This Delta deal was found by Cheapflights users on 4/21. 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 5/56:00 am
ONT
- BKK
2 stops27h 35m
Delta
Thu 6/119:50 am
BKK
- ONT
2 stops21h 29m
Delta
Deal found 4/21![Delta logo]()
$956
This Delta deal was found by Cheapflights users on 4/20. 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.
Mon 8/317:00 am
ONT
- BKK
2 stops24h 45m
Delta
Wed 9/239:50 am
BKK
- ONT
2 stops26h 50m
Delta
Deal found 4/20![Delta logo]()
$958
This Korean Air deal was found by Cheapflights users on 4/21. 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.
Wed 7/226:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Tue 8/252:35 am
BKK
- ONT
2 stops28h 41m
Korean Air
Deal found 4/21![Korean Air logo]()
$963
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 April 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 April 24, 2026.
This Delta deal was found by Cheapflights users on 4/22. 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 10/185:50 pm
ONT
- BKK
2 stops41h 15m
Delta
Sun 11/812:55 am
BKK
- ONT
2 stops31h 22m
Delta
Deal found 4/22![Delta logo]()
$937
This Korean Air deal was found by Cheapflights users on 4/21. 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.
Wed 7/226:20 am
ONT
- BKK
2 stops27h 15m
Multiple Airlines
Tue 8/252:35 am
BKK
- ONT
2 stops28h 41m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$1,012
This Qatar Airways deal was found by Cheapflights users on 4/22. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:00 pm
ONT
- BKK
2 stops28h 20m
Qatar Airways
Mon 10/192:30 am
BKK
- ONT
2 stops29h 43m
Qatar Airways
Deal found 4/22![Qatar Airways logo]()
$1,227
This Korean Air deal was found by Cheapflights users on 4/24. 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.
Sun 5/106:00 am
ONT
- BKK
2 stops27h 35m
Korean Air
Fri 6/122:35 am
BKK
- ONT
2 stops28h 44m
Korean Air
Deal found 4/24![Korean Air logo]()
$1,328
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Fri 7/246:00 am
ONT
- BKK
2 stops27h 55m
United Airlines
Sun 8/29:35 am
BKK
- ONT
2 stops51h 02m
United Airlines
Deal found 4/23![United Airlines logo]()
$1,351
This Delta deal was found by Cheapflights users on 4/19. 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.
Tue 5/56:00 am
ONT
- BKK
2 stops27h 35m
Delta
Mon 5/1811:30 pm
BKK
- ONT
2 stops31h 40m
Delta
Deal found 4/19![Delta logo]()
$955
This Qatar Airways deal was found by Cheapflights users on 4/21. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:00 pm
ONT
- BKK
2 stops28h 20m
Qatar Airways
Tue 10/272:00 am
BKK
- ONT
2 stops30h 13m
Qatar Airways
Deal found 4/21![Qatar Airways logo]()
$1,228
This Mytrip deal was found by Cheapflights users on 4/23. 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.
Wed 5/1312:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Wed 5/207:25 am
DMK
- ONT
1 stop24h 35m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,295
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Thu 10/156:05 am
ONT
- BKK
2 stops27h 50m
United Airlines
Wed 10/217:00 am
BKK
- ONT
2 stops24h 51m
United Airlines
Deal found 4/22![United Airlines logo]()
$1,363
This Mytrip deal was found by Cheapflights users on 4/23. 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.
Mon 5/1112:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Mon 5/187:25 am
DMK
- ONT
1 stop24h 35m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,296
This Qatar Airways deal was found by Cheapflights users on 4/23. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1912:00 pm
ONT
- BKK
2 stops28h 20m
Qatar Airways
Thu 10/292:00 am
BKK
- ONT
2 stops30h 13m
Qatar Airways
Deal found 4/23![Qatar Airways logo]()
$1,308
This Delta deal was found by Cheapflights users on 4/23. 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.
Sat 5/95:55 pm
ONT
- BKK
2 stops39h 40m
Delta
Tue 8/252:35 am
BKK
- ONT
2 stops48h 14m
Delta
Deal found 4/23![Delta logo]()
$1,310
This Mytrip deal was found by Cheapflights users on 4/21. 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.
Mon 5/412:10 am
ONT
- DMK
2 stops22h 55m
Multiple Airlines
Tue 5/126:45 am
DMK
- ONT
2 stops25h 15m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$1,301
This Qatar Airways deal was found by Cheapflights users on 4/20. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2712:10 pm
ONT
- BKK
2 stops28h 10m
Qatar Airways
Mon 10/122:30 am
BKK
- ONT
2 stops29h 43m
Qatar Airways
Deal found 4/20![Qatar Airways logo]()
$1,419
This Mytrip deal was found by Cheapflights users on 4/22. 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.
Mon 5/1112:10 am
ONT
- DMK
2 stops32h 55m
Multiple Airlines
Tue 5/197:30 am
DMK
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,405
This Mytrip deal was found by Cheapflights users on 4/23. 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.
Mon 8/1012:45 am
ONT
- DMK
2 stops32h 20m
Multiple Airlines
Tue 8/187:30 am
DMK
- ONT
2 stops25h 10m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,474
This Mytrip deal was found by Cheapflights users on 4/23. 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.
Mon 5/1812:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Tue 5/266:15 am
DMK
- ONT
1 stop25h 45m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,507
This Mytrip deal was found by Cheapflights users on 4/19. 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 5/312:10 am
ONT
- DMK
2 stops24h 00m
Multiple Airlines
Thu 5/76:40 am
DMK
- ONT
2 stops25h 20m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$1,523
This Mytrip deal was found by Cheapflights users on 4/23. 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 5/512:10 am
ONT
- DMK
2 stops25h 55m
Multiple Airlines
Wed 5/279:20 am
DMK
- ONT
2 stops22h 40m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,538
This Mytrip deal was found by Cheapflights users on 4/23. 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.
Sun 10/1812:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Fri 11/67:30 am
DMK
- ONT
2 stops24h 20m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,556
This Mytrip deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/312:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Sun 5/178:05 pm
DMK
- ONT
2 stops35h 55m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$1,567
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/412:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Tue 6/163:00 am
DMK
- ONT
2 stops23h 48m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,660
Last-minute flights from Ontario to BangkokDiscover last-minute flight deals from Ontario to Bangkok. Data last updated April 24, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Bangkok. Data last updated April 24, 2026 and is based on user searches.
This Korean Air deal was found by Cheapflights users on 4/20. 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 4/307:00 am
ONT
- BKK
2 stops24h 45m
Korean Air
Mon 5/252:35 am
BKK
- ONT
2 stops28h 35m
Korean Air
Deal found 4/20![Korean Air logo]()
$925
This Delta deal was found by Cheapflights users on 4/21. 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 4/307:00 am
ONT
- BKK
2 stops24h 45m
Delta
Thu 5/219:50 am
BKK
- ONT
2 stops21h 20m
Delta
Deal found 4/21![Delta logo]()
$970
This Korean Air deal was found by Cheapflights users on 4/20. 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 4/307:00 am
ONT
- BKK
2 stops24h 45m
Korean Air
Wed 5/279:40 pm
BKK
- ONT
2 stops33h 30m
Korean Air
Deal found 4/20![Korean Air logo]()
$974
This Delta deal was found by Cheapflights users on 4/19. 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.
Fri 5/17:00 am
ONT
- BKK
2 stops24h 45m
Delta
Fri 5/229:50 am
BKK
- ONT
2 stops21h 20m
Delta
Deal found 4/19![Delta logo]()
$1,019
This Delta deal was found by Cheapflights users on 4/21. 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.
Fri 5/17:00 am
ONT
- BKK
2 stops40h 35m
Delta
Tue 5/129:50 am
BKK
- ONT
2 stops45h 20m
Delta
Deal found 4/21![Delta logo]()
$1,020
This Delta deal was found by Cheapflights users on 4/19. 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.
Sat 5/27:00 am
ONT
- BKK
2 stops26h 35m
Delta
Tue 5/199:50 am
BKK
- ONT
2 stops21h 20m
Delta
Deal found 4/19![Delta logo]()
$969
This Delta deal was found by Cheapflights users on 4/20. 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 5/27:00 am
ONT
- BKK
2 stops26h 35m
Delta
Mon 5/1111:30 pm
BKK
- ONT
2 stops37h 04m
Delta
Deal found 4/20![Delta logo]()
$1,018
This Delta deal was found by Cheapflights users on 4/21. 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 5/41:29 pm
ONT
- BKK
2 stops44h 06m
Delta
Wed 6/1011:30 pm
BKK
- ONT
2 stops31h 49m
Delta
Deal found 4/21![Delta logo]()
$975
This Delta deal was found by Cheapflights users on 4/19. 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.
Tue 5/56:00 am
ONT
- BKK
2 stops27h 35m
Delta
Tue 5/199:50 am
BKK
- ONT
2 stops26h 44m
Delta
Deal found 4/19![Delta logo]()
$955
This Delta deal was found by Cheapflights users on 4/21. 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 5/56:00 am
ONT
- BKK
2 stops27h 35m
Delta
Thu 6/119:50 am
BKK
- ONT
2 stops21h 29m
Delta
Deal found 4/21![Delta logo]()
$956
This Delta deal was found by Cheapflights users on 4/19. 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.
Tue 5/56:00 am
ONT
- BKK
2 stops27h 35m
Delta
Sat 5/239:40 pm
BKK
- ONT
2 stops33h 30m
Delta
Deal found 4/19![Delta logo]()
$1,005
This Delta deal was found by Cheapflights users on 4/21. 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 5/57:00 am
ONT
- BKK
2 stops26h 35m
Delta
Sun 5/249:50 am
BKK
- ONT
2 stops21h 20m
Delta
Deal found 4/21![Delta logo]()
$1,006
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 April 24, 2026.
Search for one-way flight options from Ontario to Bangkok. Find affordable one-way fares based on user searches. Data last updated April 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
Sun 5/248:59 am
ONT
- BKK
3 stops55h 31m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$427
This Trip.com deal was found by Cheapflights users on 4/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/106:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Deal found 4/21![Korean Air logo]()
$477
This Kissandfly.com deal was found by Cheapflights users on 4/22. 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.
Fri 7/246:20 am
ONT
- BKK
2 stops28h 45m
Korean Air
Deal found 4/22![Korean Air logo]()
$479
This Delta deal was found by Cheapflights users on 4/20. 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.
Fri 9/47:00 am
ONT
- BKK
2 stops26h 35m
Delta
Deal found 4/20![Delta logo]()
$491
This Korean Air deal was found by Cheapflights users on 4/20. 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.
Wed 4/297:00 am
ONT
- BKK
2 stops24h 45m
Korean Air
Deal found 4/20![Korean Air logo]()
$494
This CheapOair deal was found by Cheapflights users on 4/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:00 am
ONT
- BKK
2 stops26h 35m
Korean Air
Deal found 4/19![Korean Air logo]()
$495
This Korean Air deal was found by Cheapflights users on 4/21. 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.
Fri 9/187:00 am
ONT
- BKK
2 stops24h 45m
Korean Air
Deal found 4/21![Korean Air logo]()
$497
This Trip.com deal was found by Cheapflights users on 4/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:00 am
ONT
- BKK
2 stops29h 05m
Korean Air
Deal found 4/19![Korean Air logo]()
$501
This Korean Air deal was found by Cheapflights users on 4/20. 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.
Fri 5/17:00 am
ONT
- BKK
2 stops24h 45m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$518
This Korean Air deal was found by Cheapflights users on 4/20. 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.
Wed 8/197:00 am
ONT
- BKK
2 stops24h 45m
Korean Air
Deal found 4/20![Korean Air logo]()
$519
This Fareboom deal was found by Cheapflights users on 4/23. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/23:05 pm
ONT
- BKK
2 stops27h 50m
Philippine Airlines
Deal found 4/23![Philippine Airlines logo]()
$549
This SmartFares deal was found by Cheapflights users on 4/21. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/811:10 pm
ONT
- BKK
1 stop27h 30m
STARLUX Airlines
Deal found 4/21![STARLUX 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 April 24, 2026.
Round-trip from | $932 (Delta) |
|---|---|
One-way from | $427 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $839 |
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 April 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
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 10/18
5:50 pm-1:05 am
2 stops41h 15m
Bangkok Suvarnabhumi
Sun 11/8
12:55 am-5:17 pm
2 stops31h 22m
$937
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 5/5
6:00 am-11:35 pm
2 stops27h 35m
Bangkok Suvarnabhumi
Mon 5/18
11:30 pm-5:10 pm
2 stops31h 40m
$955
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 7/22
6:20 am-11:35 pm
2 stops27h 15m
Bangkok Suvarnabhumi
Tue 8/25
2:35 am-5:16 pm
2 stops28h 41m
$1,012
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 10/6
12:00 pm-6:20 am
2 stops28h 20m
Bangkok Suvarnabhumi
Mon 10/19
2:30 am-6:13 pm
2 stops29h 43m
$1,227
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 10/7
12:00 pm-6:20 am
2 stops28h 20m
Bangkok Suvarnabhumi
Tue 10/27
2:00 am-6:13 pm
2 stops30h 13m
$1,228
OntarioBangkok
ONT - DMK
ONTDMK
Ontario
Wed 5/13
12:10 am-7:30 pm
1 stop29h 20m
Bangkok Don Mueang Intl
Wed 5/20
7:25 am-6:00 pm
1 stop24h 35m
$1,295
OntarioBangkok
ONT - DMK
ONTDMK
Ontario
Mon 5/11
12:10 am-7:30 pm
1 stop29h 20m
Bangkok Don Mueang Intl
Mon 5/18
7:25 am-6:00 pm
1 stop24h 35m
$1,296
Quickest round-trip
OntarioBangkok
ONT - DMK
ONTDMK
Ontario
Mon 5/4
12:10 am-1:05 pm
2 stops22h 55m
Bangkok Don Mueang Intl
Tue 5/12
6:45 am-6:00 pm
2 stops25h 15m
$1,301
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 10/19
12:00 pm-6:20 am
2 stops28h 20m
Bangkok Suvarnabhumi
Thu 10/29
2:00 am-6:13 pm
2 stops30h 13m
$1,308
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sat 5/9
5:55 pm-11:35 pm
2 stops39h 40m
Bangkok Suvarnabhumi
Tue 8/25
2:35 am-12:49 pm
2 stops48h 14m
$1,310
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
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.
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 June is currently the most expensive (average of $906). 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?
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 April 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.
Food
8.6
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Crew
9.2
Overall
8.9
Reviews
1 / 11
8.0
ExcellentAnonymous,Apr 2026
PHX - TPE
Food
8.6
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Crew
9.2
Overall
8.9
Reviews
1 / 11
8.0
ExcellentAnonymous,Apr 2026
PHX - TPE
Food
8.6
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Crew
9.2
Overall
8.9
Reviews
1 / 11
8.0
ExcellentAnonymous,Apr 2026
PHX - TPE
Food
8.6
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Crew
9.2
Overall
8.9
Reviews
1 / 11
8.0
ExcellentAnonymous,Apr 2026
PHX - TPE
Food
8.6
Entertainment
8.8
Boarding
8.9
Comfort
8.9
Crew
9.2
Overall
8.9
Reviews
1 / 11
8.0
ExcellentAnonymous,Apr 2026
PHX - 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 April 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 April 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 April 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$457 | Average$660 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$616 | Average$783 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$717 | Average$834 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$763 | Average$819 | FlexibilityNo cancel fee | On-timeN/A |