$314+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Mar 5 — Mar 121
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 February 3, 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 February 3, 2026.
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 9/96:53 pm
ONT
- BKK
2 stops24h 42m
United Airlines
Thu 9/247:00 am
BKK
- ONT
2 stops24h 47m
United Airlines
Deal found 2/1![United Airlines logo]()
$718
This CrystalTravel deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:10 am
ONT
- BKK
1 stop22h 00m
China Airlines
Fri 5/110:50 am
BKK
- ONT
1 stop21h 10m
China Airlines
Deal found 2/1![China Airlines logo]()
$720
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/96:15 am
ONT
- BKK
2 stops28h 05m
United Airlines
Mon 4/277:00 am
BKK
- ONT
2 stops24h 47m
United Airlines
Deal found 2/1![United Airlines logo]()
$723
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 9/216:53 pm
ONT
- BKK
2 stops24h 42m
United Airlines
Thu 10/17:00 am
BKK
- ONT
2 stops24h 47m
United Airlines
Deal found 2/2![United Airlines logo]()
$727
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 10/186:00 am
ONT
- BKK
2 stops27h 55m
United Airlines
Tue 10/277:10 am
BKK
- ONT
2 stops24h 37m
United Airlines
Deal found 2/1![United Airlines logo]()
$728
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 9/166:00 am
ONT
- BKK
2 stops27h 55m
United Airlines
Wed 9/309:35 am
BKK
- ONT
2 stops46h 12m
United Airlines
Deal found 1/31![United Airlines logo]()
$731
This SmartFares deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Sat 3/2812:10 am
ONT
- BKK
1 stop26h 10m
China Airlines
Tue 4/141:20 pm
BKK
- ONT
1 stop18h 40m
China Airlines
Deal found 2/2![China Airlines logo]()
$732
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/96:00 am
ONT
- BKK
2 stops38h 25m
United Airlines
Tue 5/199:35 am
BKK
- ONT
2 stops27h 24m
United Airlines
Deal found 2/2![United Airlines logo]()
$733
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 4/1411:05 am
ONT
- BKK
2 stops32h 30m
United Airlines
Fri 5/159:35 am
BKK
- ONT
2 stops40h 47m
United Airlines
Deal found 2/1![United Airlines logo]()
$735
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/27:30 am
ONT
- BKK
2 stops26h 15m
Delta
Mon 3/309:40 pm
BKK
- ONT
2 stops40h 11m
Delta
Deal found 2/1![Delta logo]()
$736
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Tue 3/3112:10 am
ONT
- BKK
1 stop26h 10m
China Airlines
Sun 4/195:30 pm
BKK
- ONT
1 stop38h 30m
China Airlines
Deal found 2/2![China Airlines logo]()
$737
This oojo deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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.
Mon 4/612:10 am
ONT
- BKK
1 stop19h 35m
China Airlines
Thu 4/161:20 pm
BKK
- ONT
1 stop18h 40m
China Airlines
Deal found 2/3![China Airlines logo]()
$738
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 February 3, 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 February 3, 2026.
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 4/2211:05 am
ONT
- BKK
2 stops32h 30m
United Airlines
Fri 5/17:00 am
BKK
- ONT
2 stops29h 59m
United Airlines
Deal found 2/1![United Airlines logo]()
$732
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/213:30 pm
ONT
- BKK
2 stops40h 50m
Delta
Sun 5/109:40 pm
BKK
- ONT
2 stops38h 39m
Delta
Deal found 2/1![Delta logo]()
$746
This China Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:10 am
ONT
- BKK
1 stop26h 10m
China Airlines
Sun 4/265:30 pm
BKK
- ONT
1 stop38h 30m
China Airlines
Deal found 2/2![China Airlines logo]()
$783
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/1512:10 am
ONT
- DMK
2 stops33h 05m
Multiple Airlines
Thu 4/237:30 am
DMK
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$938
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/203:30 pm
ONT
- BKK
2 stops40h 50m
Delta
Sun 5/109:40 pm
BKK
- ONT
2 stops38h 39m
Delta
Deal found 2/1![Delta logo]()
$746
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/196:10 am
ONT
- BKK
2 stops38h 15m
United Airlines
Sat 5/93:45 pm
BKK
- ONT
2 stops34h 37m
United Airlines
Deal found 2/1![United Airlines logo]()
$746
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/186:15 am
ONT
- BKK
2 stops39h 10m
United Airlines
Thu 4/23:45 pm
BKK
- ONT
2 stops45h 00m
United Airlines
Deal found 2/2![United Airlines logo]()
$749
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/203:30 pm
ONT
- BKK
2 stops40h 50m
Delta
Sat 5/99:40 pm
BKK
- ONT
2 stops52h 39m
Delta
Deal found 2/1![Delta logo]()
$752
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/266:37 pm
ONT
- BKK
2 stops49h 48m
United Airlines
Mon 3/164:55 pm
BKK
- ONT
2 stops38h 46m
United Airlines
Deal found 2/1![United Airlines logo]()
$754
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 40m
Delta
Fri 5/159:50 am
BKK
- ONT
2 stops21h 20m
Delta
Deal found 2/2![Delta logo]()
$767
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/812:10 am
ONT
- DMK
2 stops27h 25m
Multiple Airlines
Sat 4/187:30 am
DMK
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$950
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 4/31:27 pm
ONT
- BKK
2 stops54h 08m
United Airlines
Fri 4/173:45 pm
BKK
- ONT
2 stops40h 02m
United Airlines
Deal found 2/1![United Airlines logo]()
$764
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/1312:10 am
ONT
- DMK
2 stops27h 25m
Multiple Airlines
Tue 4/217:30 am
DMK
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$957
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/1612:10 am
ONT
- DMK
2 stops33h 05m
Multiple Airlines
Thu 4/307:30 am
DMK
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$957
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 stops27h 25m
Multiple Airlines
Tue 5/197:30 am
DMK
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$966
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/412:10 am
ONT
- DMK
2 stops33h 05m
Multiple Airlines
Tue 4/147:30 am
DMK
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$967
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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.
Thu 4/212:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Fri 4/177:30 am
DMK
- ONT
2 stops23h 35m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$1,175
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/412:10 am
ONT
- DMK
2 stops25h 55m
Multiple Airlines
Wed 4/159:20 am
DMK
- ONT
2 stops22h 40m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,206
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/209:45 pm
ONT
- DMK
1 stop35h 30m
Multiple Airlines
Sat 5/97:30 am
DMK
- ONT
2 stops23h 35m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$1,370
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 6/2112:10 am
ONT
- DMK
1 stop31h 10m
Multiple Airlines
Sun 6/286:40 am
DMK
- ONT
2 stops25h 20m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,436
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 7/1512:45 am
ONT
- DMK
2 stops31h 45m
Multiple Airlines
Fri 7/242:00 am
DMK
- ONT
2 stops29h 40m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,470
Last-minute flights from Ontario to BangkokDiscover last-minute flight deals from Ontario to Bangkok. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Bangkok. Data last updated February 3, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/31:53 pm
ONT
- BKK
2 stops30h 32m
Multiple Airlines
Tue 2/104:55 pm
BKK
- ONT
2 stops20h 58m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$738
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/36:00 am
ONT
- BKK
2 stops38h 25m
United Airlines
Tue 2/104:55 pm
BKK
- ONT
2 stops20h 58m
United Airlines
Deal found 2/2![United Airlines logo]()
$744
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/96:00 am
ONT
- BKK
2 stops38h 25m
United Airlines
Tue 5/199:35 am
BKK
- ONT
2 stops27h 24m
United Airlines
Deal found 2/2![United Airlines logo]()
$733
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/110:50 pm
ONT
- BKK
1 stop20h 00m
China Airlines
Fri 3/135:50 pm
BKK
- ONT
1 stop38h 00m
China Airlines
Deal found 2/2![China Airlines logo]()
$737
This KAYAK deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:37 pm
ONT
- BKK
2 stops25h 48m
Multiple Airlines
Wed 3/114:55 pm
BKK
- ONT
2 stops20h 02m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$743
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/27:30 am
ONT
- BKK
2 stops26h 15m
Delta
Tue 3/3111:30 pm
BKK
- ONT
2 stops37h 04m
Delta
Deal found 2/2![Delta logo]()
$736
This Vliegwinkel deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:50 pm
ONT
- BKK
1 stop20h 00m
China Airlines
Thu 3/192:05 pm
BKK
- ONT
1 stop17h 45m
China Airlines
Deal found 2/3![China Airlines logo]()
$741
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/96:15 am
ONT
- BKK
2 stops28h 05m
United Airlines
Mon 4/277:00 am
BKK
- ONT
2 stops24h 47m
United Airlines
Deal found 2/1![United Airlines logo]()
$723
This FlightHub deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1011:50 pm
ONT
- BKK
1 stop23h 15m
China Airlines
Mon 5/1110:50 am
BKK
- ONT
1 stop21h 10m
China Airlines
Deal found 2/2![China Airlines logo]()
$742
This oojo deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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.
Mon 3/1611:50 pm
ONT
- BKK
1 stop35h 45m
China Airlines
Sun 4/195:30 pm
BKK
- ONT
1 stop38h 30m
China Airlines
Deal found 1/31![China Airlines logo]()
$740
This SmartFares deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Sat 3/2812:10 am
ONT
- BKK
1 stop26h 10m
China Airlines
Tue 4/141:20 pm
BKK
- ONT
1 stop18h 40m
China Airlines
Deal found 2/2![China Airlines logo]()
$732
This oojo deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/2912:10 am
ONT
- BKK
1 stop22h 00m
China Airlines
Thu 4/161:20 pm
BKK
- ONT
1 stop18h 40m
China Airlines
Deal found 2/3![China Airlines logo]()
$739
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 February 3, 2026.
Search for one-way flight options from Ontario to Bangkok. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/47:30 am
ONT
- BKK
2 stops26h 25m
Delta
Deal found 2/2![Delta logo]()
$314
This Korean Air deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/86:00 am
ONT
- BKK
2 stops25h 30m
Korean Air
Deal found 2/1![Korean Air logo]()
$317
This Delta deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 2/153:30 pm
ONT
- BKK
2 stops42h 25m
Delta
Deal found 1/31![Delta logo]()
$326
This CheapOair deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Tue 4/287:00 am
ONT
- BKK
2 stops24h 45m
Korean Air
Deal found 2/2![Korean Air logo]()
$363
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/236:10 am
ONT
- BKK
2 stops32h 00m
United Airlines
Deal found 2/1![United Airlines logo]()
$367
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/167:30 am
ONT
- BKK
2 stops26h 15m
Delta
Deal found 2/2![Delta logo]()
$368
This KAYAK deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/86:39 pm
ONT
- BKK
2 stops25h 46m
EVA Air
Deal found 2/2![EVA Air logo]()
$369
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/16:09 am
ONT
- BKK
2 stops27h 11m
United Airlines
Deal found 2/1![United Airlines logo]()
$370
This Korean Air deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/226:00 am
ONT
- BKK
2 stops28h 55m
Korean Air
Deal found 2/2![Korean Air logo]()
$371
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 4/511:05 am
ONT
- BKK
2 stops32h 30m
United Airlines
Deal found 2/1![United Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/221:50 pm
ONT
- BKK
2 stops48h 20m
United Airlines
Deal found 2/1![United Airlines logo]()
$378
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 2/86:00 am
ONT
- BKK
2 stops38h 25m
United Airlines
Deal found 1/31![United Airlines logo]()
$386
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 February 3, 2026.
Round-trip from | $720 (CrystalTravel) |
|---|---|
One-way from | $314 (Delta) |
Popular in | December |
Cheapest in | January |
Average price | $788 |
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 February 3, 2026.
Use the filters below to find and compare flights from Ontario to Bangkok that are best for you.
Fly from
Ontario
Fly to
Bangkok
Route
Depart
Return
Price
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 4/22
11:05 am-9:35 am
2 stops32h 30m
Bangkok Suvarnabhumi
Fri 5/1
7:00 am-10:59 pm
2 stops29h 59m
$732
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sat 2/21
3:30 pm-11:20 pm
2 stops40h 50m
Bangkok Suvarnabhumi
Sun 5/10
9:40 pm-10:19 pm
2 stops38h 39m
$746
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Fri 2/20
3:30 pm-11:20 pm
2 stops40h 50m
Bangkok Suvarnabhumi
Sun 5/10
9:40 pm-10:19 pm
2 stops38h 39m
$746
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Thu 2/19
6:10 am-11:25 am
2 stops38h 15m
Bangkok Suvarnabhumi
Sat 5/9
3:45 pm-12:22 pm
2 stops34h 37m
$746
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 3/18
6:15 am-11:25 am
2 stops39h 10m
Bangkok Suvarnabhumi
Thu 4/2
3:45 pm-10:45 pm
2 stops45h 00m
$749
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Fri 2/20
3:30 pm-11:20 pm
2 stops40h 50m
Bangkok Suvarnabhumi
Sat 5/9
9:40 pm-12:19 pm
2 stops52h 39m
$752
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Thu 2/26
6:37 pm-11:25 am
2 stops49h 48m
Bangkok Suvarnabhumi
Mon 3/16
4:55 pm-5:41 pm
2 stops38h 46m
$754
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Fri 4/3
1:27 pm-9:35 am
2 stops54h 08m
Bangkok Suvarnabhumi
Fri 4/17
3:45 pm-5:47 pm
2 stops40h 02m
$764
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sat 5/2
7:00 am-11:40 pm
2 stops26h 40m
Bangkok Suvarnabhumi
Fri 5/15
9:50 am-5:10 pm
2 stops21h 20m
$767
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Thu 4/9
12:10 am-4:20 pm
1 stop26h 10m
Bangkok Suvarnabhumi
Sun 4/26
5:30 pm-6:00 pm
1 stop38h 30m
$783
Showing 1-10 of 43 results
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?
Use this chart to determine the optimal time to book a round-trip flight from Ontario to Bangkok. Price data was last updated on January 30, 2026.
Booking 83 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, January is the cheapest month in which you can book a flight from Ontario to Bangkok (average of $511). Flying from Ontario to Bangkok in June is currently the most expensive (average of $760). 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.
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 February 3, 2026.
Read through reviews of airlines operating flights from Ontario to Bangkok, such as STARLUX Airlines, Korean Air, and China Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.9
Crew
9.1
Overall
8.9
Comfort
8.8
Food
8.6
Entertainment
8.8
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Boarding
8.9
Crew
9.1
Overall
8.9
Comfort
8.8
Food
8.6
Entertainment
8.8
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Boarding
8.9
Crew
9.1
Overall
8.9
Comfort
8.8
Food
8.6
Entertainment
8.8
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Boarding
8.9
Crew
9.1
Overall
8.9
Comfort
8.8
Food
8.6
Entertainment
8.8
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 2026
SEA - TPE
Boarding
8.9
Crew
9.1
Overall
8.9
Comfort
8.8
Food
8.6
Entertainment
8.8
Reviews
1 / 10
10.0
ExcellentAnonymous,Jan 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 for Ontario to Bangkok
See prices for flight routes from nearby airports that may be better suited for you.
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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$457 | Average$660 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$616 | Average$793 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$718 | Average$857 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$756 | Average$818 | FlexibilityNo cancel fee | On-timeN/A |