$351+ Cheap flights from Ontario (ONT) to Bangkok
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Bangkok with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 October 30, 2026.
Explore the most affordable flight options available from Ontario to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
This Delta deal was found by Cheapflights users on 10/30. 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 11/296:00 am -
2 stops27h 20m
Wed 12/911:15 pm -
2 stops33h 00m
Deal found 10/30![Delta logo]()
$792
This Delta deal was found by Cheapflights users on 10/30. 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 11/281:15 pm -
2 stops44h 05m
Thu 12/1011:15 pm -
2 stops39h 42m
Deal found 10/30![Delta logo]()
$798
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:55 pm -
2 stops28h 30m
Thu 12/171:05 am -
2 stops36h 54m
Deal found 10/29![Delta logo]()
$842
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/145:56 pm -
2 stops39h 24m
Mon 11/239:40 pm -
2 stops40h 20m
Deal found 10/25![Delta logo]()
$848
This Korean Air deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:55 pm -
2 stops52h 30m
Mon 12/71:05 am -
2 stops30h 17m
Deal found 10/29![Korean Air logo]()
$854
This Korean Air deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:00 am -
2 stops23h 30m
Tue 11/241:05 am -
2 stops31h 11m
Deal found 10/27![Korean Air logo]()
$866
This Delta deal was found by Cheapflights users on 10/30. 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 11/296:00 am -
2 stops27h 20m
Mon 12/79:40 pm -
2 stops40h 19m
Deal found 10/30![Delta logo]()
$877
This Korean Air deal was found by Cheapflights users on 10/30. 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.
Mon 11/305:56 pm -
2 stops28h 29m
Wed 12/911:15 pm -
2 stops33h 00m
Deal found 10/30![Korean Air logo]()
$883
This Korean Air deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:56 pm -
2 stops52h 29m
Tue 11/249:40 pm -
2 stops34h 36m
Deal found 10/28![Korean Air logo]()
$889
This BusinessClass deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 am -
2 stops39h 25m
Tue 12/1511:15 pm -
2 stops33h 00m
Deal found 10/26![Korean Air logo]()
$893
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:35 pm -
2 stops49h 35m
Sun 11/87:10 am -
2 stops28h 05m
Deal found 10/28![United Airlines logo]()
$899
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:00 am -
2 stops28h 20m
Mon 11/99:10 am -
2 stops23h 46m
Deal found 10/27![United Airlines logo]()
$900
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 October 30, 2026.
Discover carefully curated flight deals from Ontario to Bangkok that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This Korean Air deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/303:35 pm -
2 stops38h 55m
Sun 2/71:05 am -
2 stops36h 29m
Deal found 10/29![Korean Air logo]()
$792
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/256:00 am -
2 stops25h 50m
Tue 3/27:10 am -
2 stops23h 05m
Deal found 10/26![United Airlines logo]()
$890
This China Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals ”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/610:50 pm -
1 stop26h 55m
Sun 2/285:50 pm -
1 stop38h 15m
Deal found 10/27![China Airlines logo]()
$1,000
This Korean Air deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/215:47 pm -
2 stops29h 38m
Fri 4/29:50 am -
2 stops26h 53m
Deal found 10/27![Korean Air logo]()
$792
This Korean Air deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:00 am -
2 stops39h 25m
Sun 12/1311:15 pm -
2 stops33h 00m
Deal found 10/29![Korean Air logo]()
$798
This Korean Air deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/207:00 am -
2 stops27h 20m
Fri 4/29:50 am -
2 stops26h 53m
Deal found 10/27![Korean Air logo]()
$798
This China Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2710:50 pm -
1 stop23h 15m
Tue 3/22:05 pm -
1 stop18h 00m
Deal found 10/29![China Airlines logo]()
$1,000
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/86:37 pm -
2 stops25h 53m
Mon 2/227:10 am -
2 stops23h 11m
Deal found 10/28![United Airlines logo]()
$1,057
This China Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2910:50 pm -
1 stop35h 45m
Sat 12/1210:55 am -
1 stop21h 10m
Deal found 10/25![China Airlines logo]()
$1,064
This China Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1810:50 pm -
1 stop20h 00m
Thu 3/252:05 pm -
1 stop18h 00m
Deal found 10/25![China Airlines logo]()
$1,072
This China Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3010:50 pm -
1 stop23h 15m
Fri 1/152:35 am -
1 stop29h 30m
Deal found 10/26![China Airlines logo]()
$1,102
This China Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1610:50 pm -
1 stop23h 15m
Fri 3/262:05 pm -
1 stop18h 00m
Deal found 10/25![China Airlines logo]()
$1,102
Last-minute flights from Ontario to BangkokDiscover last-minute flight deals from Ontario to Bangkok. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Bangkok. Data last updated October 30, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:35 pm -
2 stops49h 35m
Sun 11/87:10 am -
2 stops28h 05m
Deal found 10/28![United Airlines logo]()
$899
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:00 am -
2 stops28h 20m
Mon 11/99:10 am -
2 stops23h 46m
Deal found 10/27![United Airlines logo]()
$900
This Korean Air deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:00 am -
2 stops23h 30m
Tue 11/241:05 am -
2 stops31h 11m
Deal found 10/27![Korean Air logo]()
$866
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/145:56 pm -
2 stops39h 24m
Mon 11/239:40 pm -
2 stops40h 20m
Deal found 10/25![Delta logo]()
$848
This Korean Air deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:56 pm -
2 stops52h 29m
Tue 11/249:40 pm -
2 stops34h 36m
Deal found 10/28![Korean Air logo]()
$889
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Thu 11/266:00 am -
2 stops27h 20m
Mon 12/77:10 am -
2 stops25h 26m
Deal found 10/30![United Airlines logo]()
$902
This Delta deal was found by Cheapflights users on 10/30. 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 11/281:15 pm -
2 stops44h 05m
Thu 12/1011:15 pm -
2 stops39h 42m
Deal found 10/30![Delta logo]()
$798
This Delta deal was found by Cheapflights users on 10/30. 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 11/296:00 am -
2 stops27h 20m
Wed 12/911:15 pm -
2 stops33h 00m
Deal found 10/30![Delta logo]()
$792
This Delta deal was found by Cheapflights users on 10/30. 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 11/296:00 am -
2 stops27h 20m
Mon 12/79:40 pm -
2 stops40h 19m
Deal found 10/30![Delta logo]()
$877
This Korean Air deal was found by Cheapflights users on 10/30. 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.
Mon 11/305:56 pm -
2 stops28h 29m
Wed 12/911:15 pm -
2 stops33h 00m
Deal found 10/30![Korean Air logo]()
$883
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 October 30, 2026.
Search for one-way flight options from Ontario to Bangkok. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This SmartFares deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/257:00 am -
2 stops23h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Korean Air logo]()
$351
This Kissandfly.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/13:30 pm -
2 stops39h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Korean Air logo]()
$363
This Kissandfly.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/273:35 pm -
2 stops38h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Korean Air logo]()
$364
This Kissandfly.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/13:35 pm -
2 stops40h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Korean Air logo]()
$370
This SmartFares deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/183:30 pm -
2 stops30h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Korean Air logo]()
$374
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/17:00 am -
2 stops25h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Delta logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/268:02 am -
2 stops46h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Multiple Airlines logo]()
$381
This Korean Air deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/37:00 am -
2 stops23h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Korean Air logo]()
$382
This SmartFares deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/57:00 am -
2 stops25h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Korean Air logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/278:31 pm -
2 stops57h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Multiple Airlines logo]()
$396
This Kissandfly.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/153:31 pm -
2 stops30h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Korean Air logo]()
$398
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 October 30, 2026.
Round-trip from | $734 (SmartFares) |
|---|---|
One-way from | $351 (SmartFares) |
Popular in | June |
Cheapest in | January |
Average price | $839 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Bangkok that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 30, 2026.
Use the filters below to find and compare flights from Ontario to Bangkok that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioBangkok
ONT Ontario - BKK Bangkok Suvarnabhumi
ONTBKK
Ontario
Thu 1/14
7:00 am-1:25 pm
2 stops39h 25m
Bangkok Suvarnabhumi
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$382
OntarioBangkok
ONT Ontario - BKK Bangkok Suvarnabhumi
ONTBKK
Ontario
Tue 2/2
2:00 pm-5:10 am
2 stops48h 10m
Bangkok Suvarnabhumi
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$432
OntarioBangkok
ONT Ontario - BKK Bangkok Suvarnabhumi
ONTBKK
Ontario
Wed 1/13
7:25 am-12:20 am
2 stops25h 55m
Bangkok Suvarnabhumi
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$434
OntarioBangkok
ONT Ontario - BKK Bangkok Suvarnabhumi
ONTBKK
Ontario
Tue 1/5
2:00 pm-11:30 am
2 stops54h 30m
Bangkok Suvarnabhumi
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$451
OntarioBangkok
ONT Ontario - BKK Bangkok Suvarnabhumi
ONTBKK
Ontario
Mon 11/30
6:00 am-12:20 am
2 stops27h 20m
Bangkok Suvarnabhumi
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$483
OntarioBangkok
ONT Ontario - BKK Bangkok Suvarnabhumi
ONTBKK
Ontario
Fri 11/13
7:00 am-9:30 pm
2 stops23h 30m
Bangkok Suvarnabhumi
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$486
OntarioBangkok
ONT Ontario - BKK Bangkok Suvarnabhumi
ONTBKK
Ontario
Mon 11/23
4:17 pm-11:30 am
2 stops28h 13m
Bangkok Suvarnabhumi
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$488
OntarioBangkok
ONT Ontario - BKK Bangkok Suvarnabhumi
ONTBKK
Ontario
Sun 11/22
9:25 am-11:30 am
2 stops35h 05m
Bangkok Suvarnabhumi
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$488
OntarioBangkok
ONT Ontario - BKK Bangkok Suvarnabhumi
ONTBKK
Ontario
Tue 12/1
5:55 pm-1:25 pm
2 stops28h 30m
Bangkok Suvarnabhumi
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$510
OntarioBangkok
ONT Ontario - BKK Bangkok Suvarnabhumi
ONTBKK
Ontario
Sun 1/31
10:50 pm-4:45 pm
1 stop26h 55m
Bangkok Suvarnabhumi
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$570
Showing 1-10 of 23 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
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
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 $770). Flying from Ontario to Bangkok in June is currently the most expensive (average of $1,457). 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?
Airfare is below average for this route at the moment.
Ontario to Bangkok flights typically cost between $872 and $1,051 in January.The cheapest round-trip price found within the last 5 days was $734 on Korean Air (Jan 20-Feb 15).
How far ahead should I book a flight from Ontario to Bangkok?
Booking 29 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 October 30, 2026.
Read through reviews of airlines operating flights from Ontario to Bangkok, such as STARLUX Airlines,Korean Air, andChina Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.8
Comfort
8.8
Overall
8.8
Food
8.6
Crew
9.1
Entertainment
8.7
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Boarding
8.8
Comfort
8.8
Overall
8.8
Food
8.6
Crew
9.1
Entertainment
8.7
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Boarding
8.8
Comfort
8.8
Overall
8.8
Food
8.6
Crew
9.1
Entertainment
8.7
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Boarding
8.8
Comfort
8.8
Overall
8.8
Food
8.6
Crew
9.1
Entertainment
8.7
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Boarding
8.8
Comfort
8.8
Overall
8.8
Food
8.6
Crew
9.1
Entertainment
8.7
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
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.
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Alternative routes for Ontario to Bangkok
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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 October 30, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Ontario to Bangkok
Discover the top 4 airlines that operate flights from Ontario to Bangkok. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$427 | Average$730 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$455 | Average$796 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$718 | Average$914 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$731 | Average$886 | FlexibilityNo cancel fee | On-timeN/A |