
Round-trip from | $723 (United Airlines) |
|---|---|
One-way from | $313 (Delta) |
Popular in | December |
Cheapest in | January |
Average price | $1,456 |
Fly from
Fly to
Route
Depart
Return
Price
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Thu 1/1
6:39 pm-5:10 am
2 stops43h 31m
Bangkok Suvarnabhumi
Sat 1/10
7:10 am-5:51 pm
2 stops25h 41m
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 3/3
7:30 am-11:20 pm
2 stops24h 50m
Bangkok Suvarnabhumi
Sun 4/12
9:40 pm-5:16 pm
2 stops33h 36m
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Wed 1/28
1:53 pm-11:25 am
2 stops30h 32m
Bangkok Suvarnabhumi
Mon 3/9
4:55 pm-5:41 pm
2 stops38h 46m
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sat 2/28
6:10 am-5:10 am
2 stops32h 00m
Bangkok Suvarnabhumi
Thu 3/12
4:55 pm-10:57 pm
2 stops20h 02m
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 3/10
6:00 am-11:20 pm
2 stops27h 20m
Bangkok Suvarnabhumi
Sun 4/5
9:40 pm-5:13 pm
2 stops33h 33m
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Tue 3/17
6:00 am-11:25 am
2 stops39h 25m
Bangkok Suvarnabhumi
Tue 4/14
3:40 pm-11:06 pm
2 stops21h 26m
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Fri 1/9
6:00 am-11:25 am
2 stops38h 25m
Bangkok Suvarnabhumi
Fri 1/23
4:55 pm-10:53 pm
2 stops20h 58m
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sat 1/17
10:50 pm-1:35 am
1 stop35h 45m
Bangkok Suvarnabhumi
Sun 2/1
2:35 am-4:50 pm
1 stop29h 15m
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sat 1/17
10:50 pm-1:35 am
1 stop35h 45m
Bangkok Suvarnabhumi
Tue 2/3
2:35 am-4:50 pm
1 stop29h 15m
OntarioBangkok
ONT - BKK
ONTBKK
Ontario
Sat 3/7
10:50 pm-4:45 pm
1 stop26h 55m
Bangkok Suvarnabhumi
Wed 4/8
1:20 pm-6:00 pm
1 stop18h 40m
Booking 83 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Bangkok. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, April is the cheapest month in which you can book a flight from Ontario to Bangkok (average of $486). Flying from Ontario to Bangkok in June is currently the most expensive (average of $782). 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.
It’s typically best to fly out from Ontario to Bangkok in the evening. Doing so could potentially save you 29% on the flight price compared to flying in the afternoon, which is usually more expensive.
Entertainment
Food
Boarding
Comfort
Crew
Overall
Reviews
Chad,Nov 2025
TPE - SEA
Entertainment
Food
Boarding
Comfort
Crew
Overall
Reviews
Chad,Nov 2025
TPE - SEA
Entertainment
Food
Boarding
Comfort
Crew
Overall
Reviews
Chad,Nov 2025
TPE - SEA
Entertainment
Food
Boarding
Comfort
Crew
Overall
Reviews
Chad,Nov 2025
TPE - SEA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$637 | Average$805 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$722 | Average$902 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$763 | Average$825 | FlexibilityNo cancel fee | On-timeN/A |