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Cheap flights from Ontario to Bangkok from $376

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Bangkok departing on 12/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Bangkok

Cheap round-trip flights

Enter your travel dates to find the best prices.
Korean Air Logo
6:20 am - 11:35 pm
ONT
-
BKK
27h 15m
2 stops
Korean Air Logo
2:35 am - 10:40 pm
BKK
-
ONT
34h 05m
2 stops
$757Korean Air
Mon, Aug 31 - Mon, Sep 14
STARLUX Airlines Logo
11:30 pm - 12:00 pm
ONT
-
BKK
22h 30m
1 stop
STARLUX Airlines Logo
5:40 pm - 4:55 pm
BKK
-
ONT
37h 15m
1 stop
$758STARLUX Airlines
Wed, Oct 7 - Sun, Oct 25
STARLUX Airlines Logo
11:55 pm - 12:00 pm
ONT
-
BKK
22h 05m
1 stop
STARLUX Airlines Logo
5:50 pm - 5:05 pm
BKK
-
ONT
37h 15m
1 stop
$762STARLUX Airlines
Mon, Aug 31 - Sun, Sep 13
Korean Air Logo
6:20 am - 9:45 pm
ONT
-
BKK
25h 25m
2 stops
Korean Air Logo
11:30 pm - 10:40 pm
BKK
-
ONT
37h 10m
2 stops
$765Korean Air
Thu, Sep 10 - Thu, Sep 17
China Airlines Logo
11:50 pm - 1:35 am
ONT
-
BKK
35h 45m
1 stop
China Airlines Logo
10:55 am - 5:05 pm
BKK
-
ONT
21h 10m
1 stop
$815China Airlines
Thu, Oct 29 - Wed, Nov 11
China Airlines Logo
12:10 am - 1:25 am
ONT
-
BKK
35h 15m
1 stop
China Airlines Logo
5:50 pm - 5:05 pm
BKK
-
ONT
38h 15m
1 stop
$815China Airlines
Mon, Oct 19 - Tue, Nov 3
Delta Logo
6:00 am - 1:05 am
ONT
-
BKK
29h 05m
2 stops
Delta Logo
9:50 am - 5:12 pm
BKK
-
ONT
21h 22m
2 stops
$820Delta
Thu, Sep 10 - Wed, Oct 7
Delta Logo
6:20 am - 1:05 am
ONT
-
BKK
28h 45m
2 stops
Delta Logo
9:50 am - 10:04 pm
BKK
-
ONT
26h 14m
2 stops
$820Delta
Thu, Aug 27 - Thu, Sep 10
Multiple Airlines Logo
6:20 am - 11:35 pm
ONT
-
BKK
27h 15m
2 stops
Multiple Airlines Logo
9:40 am - 5:12 pm
BKK
-
ONT
21h 32m
2 stops
$886Multiple Airlines
Thu, Oct 8 - Sat, Oct 31
Multiple Airlines Logo
7:00 am - 9:30 pm
ONT
-
BKK
23h 30m
2 stops
Multiple Airlines Logo
12:55 am - 4:12 pm
BKK
-
ONT
30h 17m
2 stops
$887Multiple Airlines
Mon, Jan 18 - Thu, Feb 4

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STARLUX Airlines flights from Ontario to Bangkok

Our best STARLUX Airlines deals on Ontario to Bangkok flight tickets
STARLUX Airlines
Oct 7
ONT11:30 pmOntario
22h 30m
1 stop
BKK12:00 pmBangkok Suvarnabhumi
Oct 25
BKK5:40 pmBangkok Suvarnabhumi
37h 15m
1 stop
ONT4:55 pmOntario
$758
STARLUX Airlines
Aug 31
ONT11:55 pmOntario
22h 05m
1 stop
BKK12:00 pmBangkok Suvarnabhumi
Sep 13
BKK5:50 pmBangkok Suvarnabhumi
37h 15m
1 stop
ONT5:05 pmOntario
$762
STARLUX Airlines
Aug 31
ONT11:55 pmOntario
26h 45m
1 stop
BKK4:40 pmBangkok Suvarnabhumi
Sep 15
BKK5:50 pmBangkok Suvarnabhumi
37h 15m
1 stop
ONT5:05 pmOntario
$772

China Airlines flights from Ontario to Bangkok

Our best China Airlines deals on Ontario to Bangkok flight tickets
China Airlines
Sep 12
ONT12:45 amOntario
34h 40m
1 stop
BKK1:25 amBangkok Suvarnabhumi
Sep 23
BKK10:50 amBangkok Suvarnabhumi
21h 10m
1 stop
ONT6:00 pmOntario
$815
China Airlines
Aug 29
ONT12:45 amOntario
21h 25m
1 stop
BKK12:10 pmBangkok Suvarnabhumi
Sep 9
BKK5:30 pmBangkok Suvarnabhumi
39h 10m
1 stop
ONT6:40 pmOntario
$817
China Airlines
Sep 14
ONT12:45 amOntario
34h 40m
1 stop
BKK1:25 amBangkok Suvarnabhumi
Oct 14
BKK2:40 amBangkok Suvarnabhumi
29h 20m
1 stop
ONT6:00 pmOntario
$819

momondo 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, momondo users made 832,500 searches. Data last updated August 1, 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

Price

Cheapest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/31

6:20 am-11:35 pm

2 stops27h 15m

Bangkok Suvarnabhumi

Mon 9/14

2:35 am-10:40 pm

2 stops34h 05m

$757

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 10/7

11:30 pm-12:00 pm

1 stop22h 30m

Bangkok Suvarnabhumi

Sun 10/25

5:40 pm-4:55 pm

1 stop37h 15m

$758

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/31

11:55 pm-12:00 pm

1 stop22h 05m

Bangkok Suvarnabhumi

Sun 9/13

5:50 pm-5:05 pm

1 stop37h 15m

$762

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 9/10

6:20 am-9:45 pm

2 stops25h 25m

Bangkok Suvarnabhumi

Thu 9/17

11:30 pm-10:40 pm

2 stops37h 10m

$765

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 10/29

11:50 pm-1:35 am

1 stop35h 45m

Bangkok Suvarnabhumi

Wed 11/11

10:55 am-5:05 pm

1 stop21h 10m

$815

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 10/19

12:10 am-1:25 am

1 stop35h 15m

Bangkok Suvarnabhumi

Tue 11/3

5:50 pm-5:05 pm

1 stop38h 15m

$815

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 9/10

6:00 am-1:05 am

2 stops29h 05m

Bangkok Suvarnabhumi

Wed 10/7

9:50 am-5:12 pm

2 stops21h 22m

$820

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 8/27

6:20 am-1:05 am

2 stops28h 45m

Bangkok Suvarnabhumi

Thu 9/10

9:50 am-10:04 pm

2 stops26h 14m

$820
Quickest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 10/8

6:20 am-11:35 pm

2 stops27h 15m

Bangkok Suvarnabhumi

Sat 10/31

9:40 am-5:12 pm

2 stops21h 32m

$886

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 1/18

7:00 am-9:30 pm

2 stops23h 30m

Bangkok Suvarnabhumi

Thu 2/4

12:55 am-4:12 pm

2 stops30h 17m

$887

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bangkok from

How to get the cheapest flight ticket from Ontario to Bangkok

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Ontario and Bangkok?

Prices are currently low for flights on this route.

Typical prices usually range from $768 to $995.
The lowest price recently found on this route was $757.

What is the cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of January, then book flights to Bangkok from Ontario during February instead. Flights to Bangkok in February, while not as cheap as those in January, still average around $783.

What is the cheapest day to depart on your flight to Bangkok?

On average, the least expensive day to fly to Bangkok from Ontario is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $892. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Ontario to Bangkok on a Friday will generally be more expensive and average around $1,352. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

How far in advance should I book a flight from Ontario to Bangkok?

You are more likely to see cheaper flights to Bangkok from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $981 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from Ontario for as low as $765 on momondo.

Cheap Ontario to Bangkok flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Bangkok

Fastest flight time

20h 00m

Direct flights

None
The fastest flight from Ontario to Bangkok takes 20h 00m
There are no direct flights from Ontario to Bangkok. There are no popular flight routes from Ontario to Bangkok.
Search flight deals

Frequently asked questions about flying from Ontario to Bangkok

  • How far is Ontario to Bangkok by plane?

    A flight from Ontario to Bangkok will travel around 8282.1 mi. In terms of flight time, this usually takes a little over 20h 00m.

  • When did momondo last update prices for flights from Ontario Airport to Bangkok?

    Prices for flights from Ontario Airport to Bangkok refresh daily.

  • How many operators does momondo search for flights from Ontario Airport to Bangkok?

  • How old do you have to be to fly from Ontario Airport to Bangkok?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Bangkok.

  • What documentation or ID do you need to fly to Bangkok?

    The travel and health documents you'll need for your trip to Bangkok may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bangkok. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ontario to Bangkok

Compare and see reviews for airlines that fly from Ontario to Bangkok with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $427Free CancellationRating
7.8
8,499 reviews
Search Delta flights
Korean AirPriceFrom $455Free CancellationRating
8.4
1,223 reviews
Search Korean Air flights
China AirlinesPriceFrom $718Free CancellationRating
8.3
838 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $763Free CancellationRating
8.8
362 reviews
Search STARLUX Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Bangkok?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Bangkok for you.

Can I find flights from Ontario to Bangkok with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Bangkok from Ontario with this policy.

How can momondo help me find flights from Ontario to Bangkok?

Once all potential Ontario to Bangkok flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Bangkok right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Bangkok now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bangkok and let you know when they change.

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Find better results for your trip to Thailand

Fly into one of these airports located in Bangkok

Airports listed have a maximum distance of 15.4 mi from Bangkok
Bangkok Suvarnabhumi Airport
Bangkok Don Mueang Intl Airport