$410+ Cheap flights from Ontario (ONT) to Bangkok
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Jul 30 — Aug 61
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 30, 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 30, 2026.
This SmartFares deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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.
Wed 8/196:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Sun 9/139:40 pm
BKK
- ONT
2 stops33h 40m
Korean Air
Deal found 6/29![Korean Air logo]()
$802
This lol.travel deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:20 am
ONT
- BKK
2 stops27h 00m
Korean Air
Tue 11/1011:15 pm
BKK
- ONT
2 stops33h 02m
Korean Air
Deal found 6/26![Korean Air logo]()
$827
This Kissandfly.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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.
Mon 8/106:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Tue 8/259:40 pm
BKK
- ONT
2 stops33h 41m
Korean Air
Deal found 6/28![Korean Air logo]()
$829
This Delta deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 10/56:20 am
ONT
- BKK
2 stops25h 25m
Delta
Thu 11/59:40 am
BKK
- ONT
2 stops21h 44m
Delta
Deal found 6/29![Delta logo]()
$838
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 9/146:20 am
ONT
- BKK
2 stops27h 15m
Delta
Thu 9/249:50 am
BKK
- ONT
2 stops26h 50m
Delta
Deal found 6/30![Delta logo]()
$839
This Korean Air deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 11/2412:55 am
BKK
- ONT
2 stops31h 22m
Korean Air
Deal found 6/29![Korean Air logo]()
$844
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 9/136:00 pm
ONT
- BKK
2 stops37h 45m
Delta
Sun 9/2011:30 pm
BKK
- ONT
2 stops38h 17m
Delta
Deal found 6/30![Delta logo]()
$845
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 8/306:01 pm
ONT
- BKK
2 stops39h 34m
Delta
Sun 9/611:30 pm
BKK
- ONT
2 stops50h 44m
Delta
Deal found 6/28![Delta logo]()
$850
This lol.travel deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 11/167:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Sun 11/2212:55 am
BKK
- ONT
2 stops31h 22m
Korean Air
Deal found 6/29![Korean Air logo]()
$876
This lol.travel deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 10/296:20 am
ONT
- BKK
2 stops25h 10m
Korean Air
Fri 11/1312:55 am
BKK
- ONT
2 stops31h 22m
Korean Air
Deal found 6/27![Korean Air logo]()
$878
This SmartFares deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 11/16:20 am
ONT
- BKK
2 stops26h 00m
Korean Air
Tue 11/1011:15 pm
BKK
- ONT
2 stops33h 02m
Korean Air
Deal found 6/27![Korean Air logo]()
$879
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 9/146:20 am
ONT
- BKK
2 stops25h 25m
Delta
Thu 12/39:40 am
BKK
- ONT
2 stops21h 32m
Delta
Deal found 6/30![Delta logo]()
$881
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 30, 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 30, 2026.
This Korean Air deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Mon 10/192:35 am
BKK
- ONT
2 stops28h 37m
Korean Air
Deal found 6/26![Korean Air logo]()
$844
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 10/116:20 am
ONT
- BKK
2 stops25h 25m
Delta
Wed 11/189:40 am
BKK
- ONT
2 stops21h 32m
Delta
Deal found 6/28![Delta logo]()
$902
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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.
Mon 8/179:01 am
ONT
- BKK
2 stops24h 54m
United Airlines
Wed 8/267:00 am
BKK
- ONT
2 stops25h 16m
United Airlines
Deal found 6/28![United Airlines logo]()
$949
This China Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:45 am
ONT
- BKK
1 stop19h 00m
China Airlines
Sat 9/121:20 pm
BKK
- ONT
1 stop19h 20m
China Airlines
Deal found 6/28![China Airlines logo]()
$1,022
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:45 am
ONT
- DMK
1 stop25h 55m
Multiple Airlines
Mon 8/317:25 am
DMK
- ONT
1 stop25h 15m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$1,152
This Korean Air deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 10/146:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Tue 11/1712:55 am
BKK
- ONT
2 stops31h 22m
Korean Air
Deal found 6/28![Korean Air logo]()
$844
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 9/46:20 am
ONT
- BKK
2 stops25h 25m
Delta
Sun 9/611:30 pm
BKK
- ONT
2 stops50h 44m
Delta
Deal found 6/28![Delta logo]()
$919
This Korean Air deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Tue 9/159:40 pm
BKK
- ONT
2 stops33h 40m
Korean Air
Deal found 6/25![Korean Air logo]()
$844
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 10/138:03 am
ONT
- BKK
2 stops24h 12m
United Airlines
Sun 11/84:55 pm
BKK
- ONT
2 stops20h 58m
United Airlines
Deal found 6/27![United Airlines logo]()
$1,016
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 12/265:50 pm
ONT
- BKK
2 stops39h 55m
Delta
Sat 1/2311:15 pm
BKK
- ONT
2 stops38h 28m
Delta
Deal found 6/30![Delta logo]()
$950
This Korean Air deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:00 am
ONT
- BKK
2 stops40h 25m
Korean Air
Sun 11/159:30 pm
BKK
- ONT
2 stops34h 47m
Korean Air
Deal found 6/26![Korean Air logo]()
$894
This Mytrip deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:45 am
ONT
- DMK
1 stop28h 45m
Multiple Airlines
Tue 9/156:15 am
DMK
- ONT
1 stop26h 25m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$1,181
This Korean Air deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Mon 7/272:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/30![Korean Air logo]()
$955
This Mytrip deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 9/312:45 am
ONT
- DMK
2 stops23h 25m
Multiple Airlines
Sun 9/136:40 am
DMK
- ONT
2 stops26h 00m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$1,217
This Korean Air deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 7/126:20 am
ONT
- BKK
2 stops28h 45m
Korean Air
Sun 7/262:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/30![Korean Air logo]()
$1,005
This Mytrip deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 8/3112:45 am
ONT
- DMK
2 stops32h 20m
Multiple Airlines
Wed 9/306:30 am
DMK
- ONT
2 stops25h 30m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,220
This Mytrip deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 stops26h 50m
Multiple Airlines
Thu 8/207:30 am
DMK
- ONT
2 stops25h 10m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$1,224
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:45 am
ONT
- DMK
1 stop25h 55m
Multiple Airlines
Mon 9/76:15 am
DMK
- ONT
1 stop24h 50m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,232
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 8/3112:45 am
ONT
- DMK
1 stop25h 55m
Multiple Airlines
Sat 9/127:25 am
DMK
- ONT
1 stop25h 15m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,232
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:45 am
ONT
- DMK
1 stop25h 55m
Multiple Airlines
Fri 9/116:15 am
DMK
- ONT
1 stop26h 25m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,233
This Mytrip deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:45 am
ONT
- DMK
1 stop28h 45m
Multiple Airlines
Fri 8/216:15 am
DMK
- ONT
1 stop26h 25m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$1,237
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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
Mon 9/147:25 am
DMK
- ONT
1 stop25h 15m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,247
This Kiwi.com deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:13 pm
ONT
- DMK
2 stops42h 02m
Multiple Airlines
Sun 9/137:25 am
DMK
- ONT
1 stop25h 15m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$1,250
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 8/3111:55 pm
ONT
- DMK
1 stop26h 45m
Multiple Airlines
Wed 9/97:25 am
DMK
- ONT
1 stop23h 40m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,252
Last-minute flights from Ontario to BangkokDiscover last-minute flight deals from Ontario to Bangkok. Data last updated June 30, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Bangkok. Data last updated June 30, 2026 and is based on user searches.
This Korean Air deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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
Mon 7/132:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/29![Korean Air logo]()
$894
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 7/129:40 am
ONT
- BKK
2 stops49h 25m
Delta
Sun 7/1911:30 pm
BKK
- ONT
2 stops49h 47m
Delta
Deal found 6/30![Delta logo]()
$934
This lol.travel deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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.
Tue 7/146:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Fri 7/172:35 am
BKK
- ONT
2 stops34h 17m
Korean Air
Deal found 6/28![Korean Air logo]()
$881
This Korean Air deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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
Mon 8/32:35 am
BKK
- ONT
2 stops34h 10m
Korean Air
Deal found 6/30![Korean Air logo]()
$886
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 7/146:01 pm
ONT
- BKK
2 stops53h 34m
Delta
Sun 7/1911:30 pm
BKK
- ONT
2 stops49h 47m
Delta
Deal found 6/30![Delta logo]()
$893
This Korean Air deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Fri 7/312:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/30![Korean Air logo]()
$900
This Korean Air deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Sat 7/252:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/29![Korean Air logo]()
$908
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 stops41h 15m
Delta
Sun 7/192:35 am
BKK
- ONT
2 stops46h 42m
Delta
Deal found 6/30![Delta logo]()
$887
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 stops41h 15m
Delta
Sat 7/1811:30 pm
BKK
- ONT
2 stops38h 18m
Delta
Deal found 6/30![Delta logo]()
$889
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 7/156:00 am
ONT
- BKK
2 stops41h 35m
Delta
Tue 7/212:35 am
BKK
- ONT
2 stops28h 46m
Delta
Deal found 6/30![Delta logo]()
$931
This Korean Air deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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
Mon 8/32:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/28![Korean Air logo]()
$844
This lol.travel deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 17m
Korean Air
Deal found 6/28![Korean Air logo]()
$885
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 30, 2026.
Search for one-way flight options from Ontario to Bangkok. Find affordable one-way fares based on user searches. Data last updated June 30, 2026.
This SmartFares deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 7/266:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Deal found 6/27![Korean Air logo]()
$410
This Kissandfly.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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.
Sat 11/287:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Deal found 6/30![Korean Air logo]()
$424
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 7/126:20 am
ONT
- BKK
2 stops28h 45m
Delta
Deal found 6/30![Delta logo]()
$428
This Korean Air deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Deal found 6/29![Korean Air logo]()
$430
This WhyPayMore deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 6/30![Korean Air logo]()
$433
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 7/115:10 pm
ONT
- BKK
2 stops41h 55m
Delta
Deal found 6/30![Delta logo]()
$439
This Trip.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 11/187:00 am
ONT
- BKK
2 stops25h 20m
Korean Air
Deal found 6/30![Korean Air logo]()
$444
This Korean Air deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:00 am
ONT
- BKK
2 stops29h 05m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$454
This Korean Air deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 7/106:00 am
ONT
- BKK
2 stops29h 05m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$455
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 11/307:00 am
ONT
- BKK
2 stops26h 45m
Delta
Deal found 6/30![Delta logo]()
$458
This Trip.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 8/2812:45 am
ONT
- DMK
1 stop33h 30m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$530
This Trip.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 9/212:45 am
ONT
- DMK
1 stop33h 30m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$545
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 30, 2026.
Round-trip from | $802 (SmartFares) |
|---|---|
One-way from | $410 (SmartFares) |
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 30, 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
Thu 10/1
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Mon 10/19
2:35 am-5:12 pm
2 stops28h 37m
$844
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 10/14
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Tue 11/17
12:55 am-5:17 pm
2 stops31h 22m
$844
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 9/9
6:20 am-11:35 pm
2 stops27h 15m
Bangkok Suvarnabhumi
Tue 9/15
9:40 pm-5:20 pm
2 stops33h 40m
$844
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Fri 10/30
7:00 am-1:25 pm
2 stops40h 25m
Bangkok Suvarnabhumi
Sun 11/15
9:30 pm-5:17 pm
2 stops34h 47m
$894
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 10/11
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Wed 11/18
9:40 am-4:12 pm
2 stops21h 32m
$902
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Fri 9/4
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Sun 9/6
11:30 pm-12:14 pm
2 stops50h 44m
$919
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 8/17
9:01 am-11:55 pm
2 stops24h 54m
Bangkok Suvarnabhumi
Wed 8/26
7:00 am-6:16 pm
2 stops25h 16m
$949
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sat 12/26
5:50 pm-12:45 am
2 stops39h 55m
Bangkok Suvarnabhumi
Sat 1/23
11:15 pm-10:43 pm
2 stops38h 28m
$950
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 7/14
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Mon 7/27
2:35 am-5:21 pm
2 stops28h 46m
$955
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 7/12
6:20 am-1:05 am
2 stops28h 45m
Bangkok Suvarnabhumi
Sun 7/26
2:35 am-5:21 pm
2 stops28h 46m
$1,005
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 80 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 30, 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
Crew
9.2
Entertainment
8.8
Food
8.7
Boarding
8.9
Comfort
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.7
Boarding
8.9
Comfort
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.7
Boarding
8.9
Comfort
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.7
Boarding
8.9
Comfort
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Overall
8.9
Crew
9.2
Entertainment
8.8
Food
8.7
Boarding
8.9
Comfort
8.9
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Related info for your journey
Find useful and relevant information for your journey from Ontario to 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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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 30, 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 30, 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 30, 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$718 | Average$840 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$763 | Average$830 | FlexibilityNo cancel fee | On-timeN/A |