$560+ Cheap flights from Ontario (ONT) to Bangkok
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Jun 5 — Jun 121
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 May 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 May 6, 2026.
This SmartFares deal was found by Cheapflights users on 5/5. 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.
Wed 10/287:00 am
ONT
- BKK
2 stops24h 30m
Korean Air
Wed 11/2512:55 am
BKK
- ONT
2 stops31h 22m
Korean Air
Deal found 5/5![Korean Air logo]()
$907
This Delta deal was found by Cheapflights users on 5/5. 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 10/207:00 am
ONT
- BKK
2 stops26h 35m
Delta
Sun 11/159:40 am
BKK
- ONT
2 stops29h 08m
Delta
Deal found 5/5![Delta logo]()
$942
This SmartFares deal was found by Cheapflights users on 5/3. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:00 am
ONT
- BKK
2 stops25h 20m
Korean Air
Mon 11/169:40 am
BKK
- ONT
2 stops46h 37m
Korean Air
Deal found 5/3![Korean Air logo]()
$944
This SmartFares deal was found by Cheapflights users on 5/5. 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.
Wed 9/167:00 am
ONT
- BKK
2 stops24h 45m
Korean Air
Tue 9/292:35 am
BKK
- ONT
2 stops34h 05m
Korean Air
Deal found 5/5![Korean Air logo]()
$945
This Delta deal was found by Cheapflights users on 5/1. 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.
Thu 9/107:00 am
ONT
- BKK
2 stops24h 45m
Delta
Thu 12/109:40 am
BKK
- ONT
2 stops22h 37m
Delta
Deal found 5/1![Delta logo]()
$952
This Korean Air deal was found by Cheapflights users on 5/1. 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.
Tue 11/177:00 am
ONT
- BKK
2 stops23h 30m
Korean Air
Mon 11/3011:15 pm
BKK
- ONT
2 stops33h 02m
Korean Air
Deal found 5/1![Korean Air logo]()
$957
This Delta deal was found by Cheapflights users on 4/30. 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 8/15:10 pm
ONT
- BKK
2 stops41h 55m
Delta
Thu 8/279:40 pm
BKK
- ONT
2 stops40h 04m
Delta
Deal found 4/30![Delta logo]()
$958
This Delta deal was found by Cheapflights users on 5/1. 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 11/1811:55 am
ONT
- BKK
2 stops66h 35m
Delta
Wed 12/29:40 am
BKK
- ONT
2 stops22h 37m
Delta
Deal found 5/1![Delta logo]()
$959
This Fareboom deal was found by Cheapflights users on 5/5. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:45 am
ONT
- BKK
2 stops26h 30m
Multiple Airlines
Tue 8/259:00 pm
BKK
- ONT
2 stops39h 35m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$962
This Delta deal was found by Cheapflights users on 5/1. 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.
Tue 5/57:00 am
ONT
- BKK
2 stops26h 35m
Delta
Wed 5/209:40 pm
BKK
- ONT
2 stops39h 54m
Delta
Deal found 5/1![Delta logo]()
$965
This SmartFares deal was found by Cheapflights users on 5/5. 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.
Tue 10/137:00 am
ONT
- BKK
2 stops26h 35m
Korean Air
Mon 11/169:40 am
BKK
- ONT
2 stops46h 37m
Korean Air
Deal found 5/5![Korean Air logo]()
$969
This Korean Air deal was found by Cheapflights users on 4/30. 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 5/57:00 am
ONT
- BKK
2 stops24h 45m
Korean Air
Wed 5/209:40 pm
BKK
- ONT
2 stops33h 30m
Korean Air
Deal found 4/30![Korean Air logo]()
$971
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 May 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 May 6, 2026.
This Delta deal was found by Cheapflights users on 5/5. 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 10/187:00 am
ONT
- BKK
2 stops28h 05m
Delta
Mon 11/99:40 am
BKK
- ONT
2 stops28h 03m
Delta
Deal found 5/5![Delta logo]()
$952
This United Airlines deal was found by Cheapflights users on 5/4. 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.
Mon 8/247:13 pm
ONT
- BKK
2 stops24h 22m
United Airlines
Mon 8/317:00 am
BKK
- ONT
2 stops25h 11m
United Airlines
Deal found 5/4![United Airlines logo]()
$1,093
This China Airlines deal was found by Cheapflights users on 4/30. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:45 am
ONT
- BKK
1 stop19h 00m
China Airlines
Sun 9/272:40 am
BKK
- ONT
1 stop29h 20m
China Airlines
Deal found 4/30![China Airlines logo]()
$1,154
This Mytrip deal was found by Cheapflights users on 5/4. 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.
Tue 8/1112:45 am
ONT
- DMK
1 stop28h 45m
Multiple Airlines
Sun 8/167:25 am
DMK
- ONT
1 stop25h 15m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$1,299
This China Airlines deal was found by Cheapflights users on 4/30. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:45 am
ONT
- BKK
1 stop19h 00m
China Airlines
Tue 9/291:20 pm
BKK
- ONT
1 stop18h 40m
China Airlines
Deal found 4/30![China Airlines logo]()
$1,154
This United Airlines deal was found by Cheapflights users on 5/3. 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.
Tue 8/46:00 am
ONT
- BKK
2 stops27h 55m
United Airlines
Sun 8/237:00 am
BKK
- ONT
2 stops25h 11m
United Airlines
Deal found 5/3![United Airlines logo]()
$1,163
This Delta deal was found by Cheapflights users on 5/2. 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.
Sun 8/26:20 am
ONT
- BKK
2 stops25h 25m
Delta
Sat 8/82:35 am
BKK
- ONT
2 stops28h 46m
Delta
Deal found 5/2![Delta logo]()
$1,243
This China Airlines deal was found by Cheapflights users on 4/30. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:45 am
ONT
- BKK
1 stop19h 00m
China Airlines
Thu 10/11:20 pm
BKK
- ONT
1 stop18h 40m
China Airlines
Deal found 4/30![China Airlines logo]()
$1,154
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:00 am
ONT
- BKK
2 stops28h 20m
United Airlines
Sun 11/84:55 pm
BKK
- ONT
2 stops21h 11m
United Airlines
Deal found 4/30![United Airlines logo]()
$1,179
This Mytrip deal was found by Cheapflights users on 5/5. 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.
Sat 5/1612:10 am
ONT
- DMK
2 stops26h 15m
Multiple Airlines
Thu 5/286:15 am
DMK
- ONT
2 stops25h 45m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,333
This Delta deal was found by Cheapflights users on 4/30. 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 5/316:45 am
ONT
- BKK
2 stops28h 20m
Delta
Mon 6/229:40 pm
BKK
- ONT
2 stops33h 39m
Delta
Deal found 4/30![Delta logo]()
$1,281
This China Airlines deal was found by Cheapflights users on 4/30. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1112:45 am
ONT
- BKK
2 stops22h 35m
China Airlines
Sat 9/1910:50 am
BKK
- ONT
1 stop21h 10m
China Airlines
Deal found 4/30![China Airlines logo]()
$1,327
This Mytrip deal was found by Cheapflights users on 5/5. 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 9/1712:10 am
ONT
- DMK
2 stops26h 05m
Multiple Airlines
Fri 9/257:30 am
DMK
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,514
This Mytrip deal was found by Cheapflights users on 5/2. 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 10/1512:10 am
ONT
- DMK
2 stops23h 30m
Multiple Airlines
Sun 10/257:45 am
DMK
- ONT
1 stop24h 05m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$1,540
This Mytrip deal was found by Cheapflights users on 5/5. 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.
Wed 5/2012:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Mon 6/17:25 am
DMK
- ONT
1 stop24h 35m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,595
This Mytrip deal was found by Cheapflights users on 5/5. 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.
Fri 8/2112:45 am
ONT
- DMK
1 stop28h 45m
Multiple Airlines
Fri 8/286:15 am
DMK
- ONT
1 stop25h 25m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,597
This Mytrip deal was found by Cheapflights users on 5/2. 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.
Fri 8/712:45 am
ONT
- DMK
2 stops32h 20m
Multiple Airlines
Sat 8/157:30 am
DMK
- ONT
2 stops25h 10m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$1,622
This Mytrip deal was found by Cheapflights users on 5/4. 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.
Tue 7/2112:45 am
ONT
- DMK
1 stop28h 45m
Multiple Airlines
Wed 7/296:15 am
DMK
- ONT
1 stop26h 25m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$1,634
This Mytrip deal was found by Cheapflights users on 5/1. 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.
Sun 5/3112:10 am
ONT
- DMK
2 stops24h 00m
Multiple Airlines
Mon 6/86:40 am
DMK
- ONT
2 stops24h 25m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$1,667
This Mytrip deal was found by Cheapflights users on 5/1. 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.
Sat 8/112:45 am
ONT
- DMK
2 stops24h 05m
Multiple Airlines
Sat 8/158:10 am
DMK
- ONT
2 stops24h 30m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$1,726
This Mytrip deal was found by Cheapflights users on 5/4. 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 7/2312:45 am
ONT
- DMK
2 stops26h 50m
Multiple Airlines
Fri 7/317:30 am
DMK
- ONT
2 stops25h 10m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$1,729
Last-minute flights from Ontario to BangkokDiscover last-minute flight deals from Ontario to Bangkok. Data last updated May 6, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Bangkok. Data last updated May 6, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/1. 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.
Tue 5/57:00 am
ONT
- BKK
2 stops26h 35m
Delta
Wed 5/209:40 pm
BKK
- ONT
2 stops39h 54m
Delta
Deal found 5/1![Delta logo]()
$965
This Korean Air deal was found by Cheapflights users on 4/30. 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 5/57:00 am
ONT
- BKK
2 stops24h 45m
Korean Air
Wed 5/209:40 pm
BKK
- ONT
2 stops33h 30m
Korean Air
Deal found 4/30![Korean Air logo]()
$971
This Delta deal was found by Cheapflights users on 4/30. 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 5/57:00 am
ONT
- BKK
2 stops26h 35m
Delta
Tue 5/199:50 am
BKK
- ONT
2 stops21h 20m
Delta
Deal found 4/30![Delta logo]()
$990
This Mytrip deal was found by Cheapflights users on 5/1. 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.
Tue 5/512:10 am
ONT
- DMK
2 stops24h 00m
Multiple Airlines
Wed 5/136:40 am
DMK
- ONT
2 stops25h 20m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$1,010
This Delta deal was found by Cheapflights users on 5/1. 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.
Tue 5/57:00 am
ONT
- BKK
2 stops24h 45m
Delta
Sat 5/239:40 pm
BKK
- ONT
2 stops33h 30m
Delta
Deal found 5/1![Delta logo]()
$1,015
This Korean Air deal was found by Cheapflights users on 5/4. 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.
Tue 5/57:00 am
ONT
- BKK
2 stops24h 45m
Korean Air
Fri 6/59:50 am
BKK
- ONT
2 stops21h 18m
Korean Air
Deal found 5/4![Korean Air logo]()
$1,020
This lastminute.com deal was found by Cheapflights users on 5/4. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:10 am
ONT
- BKK
1 stop19h 35m
China Airlines
Wed 5/201:20 pm
BKK
- ONT
1 stop18h 40m
China Airlines
Deal found 5/4![China Airlines logo]()
$1,058
This oojo deal was found by Cheapflights users on 5/4. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/911:10 pm
ONT
- BKK
1 stop27h 30m
STARLUX Airlines
Fri 5/155:50 pm
BKK
- ONT
1 stop37h 15m
STARLUX Airlines
Deal found 5/4![STARLUX Airlines logo]()
$1,049
This Korean Air deal was found by Cheapflights users on 5/1. 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.
Mon 5/116:45 am
ONT
- BKK
2 stops25h 00m
Korean Air
Sun 5/312:35 am
BKK
- ONT
2 stops28h 33m
Korean Air
Deal found 5/1![Korean Air logo]()
$995
This FlightHub deal was found by Cheapflights users on 4/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1111:10 pm
ONT
- BKK
1 stop27h 30m
STARLUX Airlines
Fri 5/155:50 pm
BKK
- ONT
1 stop37h 15m
STARLUX Airlines
Deal found 4/30![STARLUX Airlines logo]()
$1,050
This Jettzy deal was found by Cheapflights users on 5/1. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1311:10 pm
ONT
- BKK
1 stop22h 50m
STARLUX Airlines
Mon 6/11:10 pm
BKK
- ONT
1 stop17h 55m
STARLUX Airlines
Deal found 5/1![STARLUX Airlines logo]()
$1,051
This CrystalTravel deal was found by Cheapflights users on 5/2. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:20 am
ONT
- BKK
2 stops28h 45m
Korean Air
Wed 6/179:40 pm
BKK
- ONT
2 stops33h 39m
Korean Air
Deal found 5/2![Korean Air logo]()
$1,048
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 May 6, 2026.
Search for one-way flight options from Ontario to Bangkok. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
This CrystalTravel deal was found by Cheapflights users on 5/2. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1311:10 pm
ONT
- BKK
1 stop22h 50m
STARLUX Airlines
Deal found 5/2![STARLUX Airlines logo]()
$560
This Delta deal was found by Cheapflights users on 5/2. 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 7/96:20 am
ONT
- BKK
2 stops25h 25m
Delta
Deal found 5/2![Delta logo]()
$563
This Korean Air deal was found by Cheapflights users on 5/4. 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.
Thu 7/306:20 am
ONT
- BKK
2 stops27h 15m
Korean Air
Deal found 5/4![Korean Air logo]()
$566
This Delta deal was found by Cheapflights users on 5/2. 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.
Sun 7/125:10 pm
ONT
- BKK
2 stops40h 25m
Delta
Deal found 5/2![Delta logo]()
$576
This oojo deal was found by Cheapflights users on 5/5. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/911:10 pm
ONT
- BKK
1 stop27h 30m
STARLUX Airlines
Deal found 5/5![STARLUX Airlines logo]()
$577
This Delta deal was found by Cheapflights users on 5/2. 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 7/116:20 am
ONT
- BKK
2 stops25h 25m
Delta
Deal found 5/2![Delta logo]()
$583
This Korean Air deal was found by Cheapflights users on 5/1. 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.
Fri 7/106:20 am
ONT
- BKK
2 stops41h 15m
Korean Air
Deal found 5/1![Korean Air logo]()
$586
This Delta deal was found by Cheapflights users on 5/2. 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.
Tue 7/76:00 am
ONT
- BKK
2 stops25h 45m
Delta
Deal found 5/2![Delta logo]()
$588
This FlightHub deal was found by Cheapflights users on 5/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1612:10 am
ONT
- BKK
1 stop26h 10m
China Airlines
Deal found 5/5![China Airlines logo]()
$596
This oojo deal was found by Cheapflights users on 5/5. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1512:10 am
ONT
- BKK
1 stop19h 35m
China Airlines
Deal found 5/5![China Airlines logo]()
$601
This Trip.com deal was found by Cheapflights users on 5/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/812:10 am
ONT
- DMK
1 stop34h 05m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$683
This Trip.com deal was found by Cheapflights users on 5/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1112:10 am
ONT
- DMK
1 stop29h 20m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$686
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 May 6, 2026.
Round-trip from | $907 (SmartFares) |
|---|---|
One-way from | $560 (CrystalTravel) |
Popular in | December |
Cheapest in | January |
Average price | $1,149 |
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 May 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
Sun 10/18
7:00 am-1:05 am
2 stops28h 05m
Bangkok Suvarnabhumi
Mon 11/9
9:40 am-10:43 pm
2 stops28h 03m
$952
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Mon 8/24
7:13 pm-9:35 am
2 stops24h 22m
Bangkok Suvarnabhumi
Mon 8/31
7:00 am-6:11 pm
2 stops25h 11m
$1,093
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 9/6
12:45 am-9:45 am
1 stop19h 00m
Bangkok Suvarnabhumi
Sun 9/27
2:40 am-6:00 pm
1 stop29h 20m
$1,154
Quickest round-trip
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Thu 9/10
12:45 am-9:45 am
1 stop19h 00m
Bangkok Suvarnabhumi
Tue 9/29
1:20 pm-6:00 pm
1 stop18h 40m
$1,154
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 9/9
12:45 am-9:45 am
1 stop19h 00m
Bangkok Suvarnabhumi
Thu 10/1
1:20 pm-6:00 pm
1 stop18h 40m
$1,154
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 8/4
6:00 am-11:55 pm
2 stops27h 55m
Bangkok Suvarnabhumi
Sun 8/23
7:00 am-6:11 pm
2 stops25h 11m
$1,163
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 10/28
6:00 am-12:20 am
2 stops28h 20m
Bangkok Suvarnabhumi
Sun 11/8
4:55 pm-11:06 pm
2 stops21h 11m
$1,179
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 8/2
6:20 am-9:45 pm
2 stops25h 25m
Bangkok Suvarnabhumi
Sat 8/8
2:35 am-5:21 pm
2 stops28h 46m
$1,243
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sun 5/31
6:45 am-1:05 am
2 stops28h 20m
Bangkok Suvarnabhumi
Mon 6/22
9:40 pm-5:19 pm
2 stops33h 39m
$1,281
OntarioBangkok
ONT - DMK
ONTDMK
Ontario
Tue 8/11
12:45 am-7:30 pm
1 stop28h 45m
Bangkok Don Mueang Intl
Sun 8/16
7:25 am-6:40 pm
1 stop25h 15m
$1,299
Showing 1-10 of 42 resultsSorted by cheapest first
Best time to book a flight from Ontario to Bangkok
Have a flexible travel schedule? Discover the best time to fly to Bangkok from Ontario with our price prediction graph.
ONT-TH1
ONT-BKK
ONT-DMK
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Bangkok
ONT-TH1
ONT-BKK
ONT-DMK
How far ahead should I book a flight from Ontario to Bangkok?
Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Bangkok. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Ontario to Bangkok?
Currently, July is the cheapest month in which you can book a flight from Ontario to Bangkok (average of $457). Flying from Ontario to Bangkok in June is currently the most expensive (average of $906). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Ontario to Bangkok?
Reviews of airlines servicing Bangkok
Get insights into the airlines that provide service to Bangkok. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bangkok. Reviews last updated May 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
9.0
Overall
8.9
Entertainment
8.8
Food
8.6
Comfort
8.9
Crew
9.2
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
9.0
Overall
8.9
Entertainment
8.8
Food
8.6
Comfort
8.9
Crew
9.2
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
9.0
Overall
8.9
Entertainment
8.8
Food
8.6
Comfort
8.9
Crew
9.2
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
9.0
Overall
8.9
Entertainment
8.8
Food
8.6
Comfort
8.9
Crew
9.2
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Boarding
9.0
Overall
8.9
Entertainment
8.8
Food
8.6
Comfort
8.9
Crew
9.2
Reviews
1 / 12
10.0
Excellentember j,Apr 2026
TPE - ONT
Related info for your journey
Find useful and relevant information for your journey from Ontario to Bangkok. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
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Popular flights
Alternative routes for Ontario to Bangkok
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Bangkok by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Bangkok by cabin class
Find flights from Ontario to Bangkok, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Bangkok flights
Browse other Ontario and Bangkok flight options. Last updated on May 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 May 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 May 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$457 | Average$660 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$616 | Average$788 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$717 | Average$832 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$763 | Average$820 | FlexibilityNo cancel fee | On-timeN/A |