$443+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Jul 6 — Jul 131
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
Cheapest
Best
Last-minute
One-way
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 6, 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 6, 2026.
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:00 am
ONT
- BKK
2 stops25h 45m
Delta
Wed 9/29:50 am
BKK
- ONT
2 stops26h 33m
Delta
Deal found 6/6![Delta logo]()
$881
This Delta deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” 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 9/76:20 am
ONT
- BKK
2 stops27h 15m
Delta
Mon 11/169:40 am
BKK
- ONT
2 stops21h 32m
Delta
Deal found 6/4![Delta logo]()
$882
This Delta deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:10 pm
ONT
- BKK
2 stops41h 55m
Delta
Tue 10/1311:30 pm
BKK
- ONT
2 stops37h 13m
Delta
Deal found 6/5![Delta logo]()
$887
This Delta deal was found by Cheapflights users on 6/2. 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.
Thu 10/227:00 am
ONT
- BKK
2 stops28h 05m
Delta
Sun 11/111:15 pm
BKK
- ONT
2 stops38h 28m
Delta
Deal found 6/2![Delta logo]()
$890
This Korean Air deal was found by Cheapflights users on 6/2. 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.
Tue 11/177:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Tue 1/1911:15 pm
BKK
- ONT
2 stops29h 42m
Korean Air
Deal found 6/2![Korean Air logo]()
$895
This Delta deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2911:55 am
ONT
- BKK
2 stops66h 35m
Delta
Wed 12/911:15 pm
BKK
- ONT
2 stops33h 02m
Delta
Deal found 6/4![Delta logo]()
$896
This SmartFares deal was found by Cheapflights users on 6/2. 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.
Thu 8/206:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Sat 8/292:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/2![Korean Air logo]()
$911
This Jetabroad deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Wed 8/262:35 am
BKK
- ONT
2 stops34h 10m
Korean Air
Deal found 6/5![Korean Air logo]()
$913
This SmartFares deal was found by Cheapflights users on 6/1. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Tue 12/112:55 am
BKK
- ONT
2 stops31h 22m
Korean Air
Deal found 6/1![Korean Air logo]()
$914
This Delta deal was found by Cheapflights users on 6/3. 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 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
Wed 10/149:50 am
BKK
- ONT
2 stops21h 27m
Delta
Deal found 6/3![Delta logo]()
$921
This Delta deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 10/137:00 am
ONT
- BKK
2 stops24h 45m
Delta
Wed 11/119:40 am
BKK
- ONT
2 stops22h 37m
Delta
Deal found 6/5![Delta logo]()
$922
This Mytrip deal was found by Cheapflights users on 6/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/212:45 am
ONT
- DMK
2 stops23h 25m
Multiple Airlines
Fri 7/106:40 am
DMK
- ONT
2 stops26h 00m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$1,078
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 6, 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 6, 2026.
This Korean Air deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:00 am
ONT
- BKK
2 stops25h 20m
Korean Air
Sun 3/2811:30 pm
BKK
- ONT
2 stops31h 47m
Korean Air
Deal found 6/4![Korean Air logo]()
$984
This Korean Air deal was found by Cheapflights users on 6/2. 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.
Mon 7/136:00 am
ONT
- BKK
2 stops25h 45m
Multiple Airlines
Mon 7/279:40 pm
BKK
- ONT
2 stops33h 41m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$1,024
This Delta deal was found by Cheapflights users on 6/1. 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 7/136:00 am
ONT
- BKK
2 stops25h 45m
Delta
Tue 7/282:35 am
BKK
- ONT
2 stops28h 46m
Delta
Deal found 6/1![Delta logo]()
$1,029
This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/69:01 am
ONT
- BKK
2 stops24h 54m
United Airlines
Sun 9/277:00 am
BKK
- ONT
2 stops22h 22m
United Airlines
Deal found 6/4![United Airlines logo]()
$1,063
This Korean Air deal was found by Cheapflights users on 6/1. 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.
Wed 7/156:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Sat 7/252:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/1![Korean Air logo]()
$1,001
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 9/79:01 am
ONT
- BKK
2 stops24h 54m
United Airlines
Mon 9/217:00 am
BKK
- ONT
2 stops25h 11m
United Airlines
Deal found 6/6![United Airlines logo]()
$1,082
This Korean Air deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/176:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Wed 7/222:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/5![Korean Air logo]()
$1,012
This United Airlines deal was found by Cheapflights users on 6/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:32 pm
ONT
- BKK
2 stops25h 03m
United Airlines
Thu 10/157:00 am
BKK
- ONT
2 stops22h 22m
United Airlines
Deal found 6/3![United Airlines logo]()
$1,087
This Korean Air deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/242:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/5![Korean Air logo]()
$1,012
This Mytrip deal was found by Cheapflights users on 6/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:10 am
ONT
- DMK
2 stops24h 00m
Multiple Airlines
Thu 10/156:40 am
DMK
- ONT
2 stops25h 20m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$1,340
This Korean Air deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 stops25h 45m
Korean Air
Wed 7/292:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/5![Korean Air logo]()
$1,062
This Mytrip deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 9/2912:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Sun 10/118:05 pm
DMK
- ONT
2 stops35h 55m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$1,387
This Korean Air deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 stops25h 25m
Korean Air
Fri 7/242:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/5![Korean Air logo]()
$1,062
This Kiwi.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” 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 11/289:45 pm
ONT
- DMK
1 stop24h 50m
Multiple Airlines
Fri 12/116:15 am
DMK
- ONT
1 stop25h 15m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$1,431
This Kiwi.com deal was found by Cheapflights users on 6/1. 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.
Mon 9/1411:30 pm
ONT
- DMK
1 stop34h 45m
Multiple Airlines
Mon 9/2811:30 pm
DMK
- ONT
2 stops36h 40m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$1,467
This Mytrip deal was found by Cheapflights users on 6/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1312:45 am
ONT
- DMK
2 stops26h 50m
Multiple Airlines
Mon 9/216:40 am
DMK
- ONT
2 stops24h 25m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$1,487
This Mytrip deal was found by Cheapflights users on 6/2. 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 10/1912:10 am
ONT
- DMK
2 stops32h 55m
Multiple Airlines
Sun 11/158:45 am
DMK
- ONT
2 stops23h 05m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$1,506
This Mytrip deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Sat 10/248:10 am
DMK
- ONT
2 stops23h 50m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$1,518
This Mytrip deal was found by Cheapflights users on 6/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:45 am
ONT
- DMK
2 stops32h 20m
Multiple Airlines
Sun 9/277:25 am
DMK
- ONT
1 stop24h 35m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$1,577
This Mytrip deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 8/2412:45 am
ONT
- DMK
2 stops25h 35m
Multiple Airlines
Wed 9/27:45 am
DMK
- ONT
2 stops24h 55m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$1,630
This Mytrip deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/912:45 am
ONT
- DMK
2 stops23h 25m
Multiple Airlines
Sat 7/256:40 am
DMK
- ONT
2 stops26h 00m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$1,764
This Mytrip deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” 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 7/112:45 am
ONT
- DMK
2 stops31h 55m
Multiple Airlines
Thu 7/96:40 am
DMK
- ONT
2 stops26h 00m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$1,769
Last-minute flights from Ontario to BangkokDiscover last-minute flight deals from Ontario to Bangkok. Data last updated June 6, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Bangkok. Data last updated June 6, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/3. 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 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
Sun 9/69:40 pm
BKK
- ONT
2 stops39h 05m
Delta
Deal found 6/3![Delta logo]()
$926
This Trip.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/136:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Wed 7/2211:30 pm
BKK
- ONT
2 stops37h 22m
Korean Air
Deal found 6/6![Korean Air logo]()
$932
This Korean Air deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Thu 7/309:50 am
BKK
- ONT
2 stops45h 31m
Korean Air
Deal found 6/4![Korean Air logo]()
$937
This Jetabroad deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Wed 7/152:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/6![Korean Air logo]()
$938
This Delta deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:10 pm
ONT
- BKK
2 stops41h 55m
Delta
Tue 10/1311:30 pm
BKK
- ONT
2 stops37h 13m
Delta
Deal found 6/5![Delta logo]()
$887
This Korean Air deal was found by Cheapflights users on 6/2. 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.
Tue 7/146:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Mon 7/2011:30 pm
BKK
- ONT
2 stops37h 22m
Korean Air
Deal found 6/2![Korean Air logo]()
$895
This Korean Air deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/202:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/5![Korean Air logo]()
$962
This Korean Air deal was found by Cheapflights users on 6/2. 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.
Wed 7/156:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Mon 7/2711:30 pm
BKK
- ONT
2 stops31h 51m
Korean Air
Deal found 6/2![Korean Air logo]()
$976
This Delta deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 stops25h 25m
Delta
Thu 7/302:35 am
BKK
- ONT
2 stops28h 46m
Delta
Deal found 6/5![Delta logo]()
$981
This Korean Air deal was found by Cheapflights users on 6/1. 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 7/196:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Mon 8/172:35 am
BKK
- ONT
2 stops28h 46m
Korean Air
Deal found 6/1![Korean Air logo]()
$945
This Delta deal was found by Cheapflights users on 6/1. 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 7/276:20 am
ONT
- BKK
2 stops28h 45m
Delta
Wed 9/3011:30 pm
BKK
- ONT
2 stops37h 10m
Delta
Deal found 6/1![Delta logo]()
$890
This SmartFares deal was found by Cheapflights users on 6/1. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Mon 8/1011:30 pm
BKK
- ONT
2 stops31h 51m
Korean Air
Deal found 6/1![Korean Air logo]()
$931
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 6, 2026.
Search for one-way flight options from Ontario to Bangkok. Find affordable one-way fares based on user searches. Data last updated June 6, 2026.
This Trip.com deal was found by Cheapflights users on 6/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:20 am
ONT
- BKK
2 stops25h 25m
Korean Air
Deal found 6/3![Korean Air logo]()
$443
This Delta deal was found by Cheapflights users on 6/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:20 am
ONT
- BKK
2 stops28h 45m
Delta
Deal found 6/3![Delta logo]()
$458
This Korean Air deal was found by Cheapflights users on 6/2. 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 11/17:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Deal found 6/2![Korean Air logo]()
$461
This Delta deal was found by Cheapflights users on 6/1. 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.
Wed 7/86:01 pm
ONT
- BKK
2 stops37h 44m
Delta
Deal found 6/1![Delta logo]()
$469
This Delta deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 9/2711:44 am
ONT
- BKK
2 stops45h 51m
Delta
Deal found 6/5![Delta logo]()
$470
This United Airlines deal was found by Cheapflights users on 6/1. 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 8/241:56 pm
ONT
- BKK
2 stops48h 39m
United Airlines
Deal found 6/1![United Airlines logo]()
$511
This United Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” 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 7/266:00 am
ONT
- BKK
2 stops27h 55m
United Airlines
Deal found 6/4![United Airlines logo]()
$513
This United Airlines deal was found by Cheapflights users on 6/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:00 am
ONT
- BKK
2 stops37h 35m
United Airlines
Deal found 6/3![United Airlines logo]()
$519
This Delta deal was found by Cheapflights users on 6/2. 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.
Fri 7/106:00 am
ONT
- BKK
2 stops25h 45m
Delta
Deal found 6/2![Delta logo]()
$523
This Korean Air deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/207:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Deal found 6/4![Korean Air logo]()
$526
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/201:50 pm
ONT
- BKK
2 stops53h 45m
United Airlines
Deal found 6/5![United Airlines logo]()
$530
This SmartFares deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1412:45 am
ONT
- BKK
1 stop25h 35m
China Airlines
Deal found 6/5![China Airlines logo]()
$547
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 6, 2026.
Round-trip from | $881 (Delta) |
|---|---|
One-way from | $443 (Trip.com) |
Popular in | December |
Cheapest in | January |
Average price | $1,398 |
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 6, 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
Wed 11/18
7:00 am-11:20 pm
2 stops25h 20m
Bangkok Suvarnabhumi
Sun 3/28
11:30 pm-5:17 pm
2 stops31h 47m
$984
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 7/15
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Sat 7/25
2:35 am-5:21 pm
2 stops28h 46m
$1,001
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Fri 7/17
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Wed 7/22
2:35 am-5:21 pm
2 stops28h 46m
$1,012
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 7/14
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Fri 7/24
2:35 am-5:21 pm
2 stops28h 46m
$1,012
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 7/13
6:00 am-9:45 pm
2 stops25h 45m
Bangkok Suvarnabhumi
Mon 7/27
9:40 pm-5:21 pm
2 stops33h 41m
$1,024
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 7/13
6:00 am-9:45 pm
2 stops25h 45m
Bangkok Suvarnabhumi
Tue 7/28
2:35 am-5:21 pm
2 stops28h 46m
$1,029
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Fri 7/10
6:00 am-9:45 pm
2 stops25h 45m
Bangkok Suvarnabhumi
Wed 7/29
2:35 am-5:21 pm
2 stops28h 46m
$1,062
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 7/12
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Fri 7/24
2:35 am-5:21 pm
2 stops28h 46m
$1,062
Quickest round-trip
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 9/6
9:01 am-11:55 pm
2 stops24h 54m
Bangkok Suvarnabhumi
Sun 9/27
7:00 am-3:22 pm
2 stops22h 22m
$1,063
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 9/7
9:01 am-11:55 pm
2 stops24h 54m
Bangkok Suvarnabhumi
Mon 9/21
7:00 am-6:11 pm
2 stops25h 11m
$1,082
Showing 1-10 of 41 resultsSorted by cheapest first
Best time to book a flight from Ontario to Bangkok
Have a flexible travel schedule? Discover the best time to fly to Bangkok from Ontario with our price prediction graph.
ONT-TH1
ONT-BKK
ONT-DMK
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Bangkok
ONT-TH1
ONT-BKK
ONT-DMK
What is the cheapest month to book a flight from Ontario to Bangkok?
Currently, July is the cheapest month in which you can book a flight from Ontario to Bangkok (average of $457). Flying from Ontario to Bangkok in December is currently the most expensive (average of $732). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Ontario to Bangkok?
How far ahead should I book a flight from Ontario to Bangkok?
Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Bangkok. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Bangkok
Get insights into the airlines that provide service to Bangkok. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bangkok. Reviews last updated June 6, 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.
Boarding
8.9
Entertainment
8.8
Comfort
8.9
Overall
8.9
Crew
9.1
Food
8.6
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Boarding
8.9
Entertainment
8.8
Comfort
8.9
Overall
8.9
Crew
9.1
Food
8.6
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Boarding
8.9
Entertainment
8.8
Comfort
8.9
Overall
8.9
Crew
9.1
Food
8.6
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Boarding
8.9
Entertainment
8.8
Comfort
8.9
Overall
8.9
Crew
9.1
Food
8.6
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Boarding
8.9
Entertainment
8.8
Comfort
8.9
Overall
8.9
Crew
9.1
Food
8.6
Reviews
1 / 13
10.0
ExcellentAnonymous,Jun 2026
LAX - TPE
Related info for your journey
Find useful and relevant information for your journey from Ontario to Bangkok. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Ontario
Popular flights
Alternative routes for Ontario to Bangkok
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Bangkok by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Bangkok by cabin class
Find flights from Ontario to Bangkok, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Bangkok flights
Browse other Ontario and Bangkok flight options. Last updated on June 6, 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 6, 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 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$457 | Average$666 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$616 | Average$788 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$717 | Average$830 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$763 | Average$824 | FlexibilityNo cancel fee | On-timeN/A |