What is the cheapest airline that flies from Ontario to Bangkok?

Korean Air, Delta, and China Airlines are the most popular carriers operating from Ontario to Bangkok

What airlines fly to Bangkok?

Asiana Airlines, Singapore Airlines and China Airlines are the top three most popular airlines that fly to Bangkok from Ontario according to our data. Asiana Airlines is the first choice among our users, with 27% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 24 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

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?

There are 4 operators available for flights from Ontario Airport to Bangkok as of July 2025.

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.

$423 Cheap Flights from Ontario to Bangkok in 2025

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Find the cheapest flights from Ontario to Bangkok

Round-trip

One-way

Last minute

Cheap round-trip flights

6:37 am - 1:05 amONT-BKK

28h 28m2 stops

1:00 am - 5:10 pmBKK-ONT

31h 10m2 stops

$739Korean Air

Find Deal

א', אוק' 19 - ד', נוב' 5

6:00 am - 9:45 pmONT-BKK

25h 45m2 stops

11:30 pm - 5:00 pmBKK-ONT

31h 30m2 stops

$743Korean Air

Find Deal

ו', ספט' 12 - ש', ספט' 27

6:00 am - 9:45 pmONT-BKK

25h 45m2 stops

9:50 am - 10:42 pmBKK-ONT

26h 52m2 stops

$778Delta

Find Deal

ד', אוג' 20 - ה', אוג' 28

6:05 am - 9:45 pmONT-BKK

25h 40m2 stops

9:50 am - 10:40 pmBKK-ONT

26h 50m2 stops

$779Delta

Find Deal

ב', ספט' 1 - ג', ספט' 9

10:50 pm - 9:50 amONT-BKK

20h 00m1 stop

2:35 am - 4:50 pmBKK-ONT

29h 15m1 stop

$796China Airlines

Find Deal

ו', ינו' 23 - ה', פב' 5

10:50 pm - 9:50 amONT-BKK

20h 00m1 stop

2:05 pm - 4:50 pmBKK-ONT

17h 45m1 stop

$797China Airlines

Find Deal

ב', ינו' 26 - ב', פב' 23

9:45 pm - 12:35 pmONT-BKK

23h 50m1 stop

1:45 pm - 3:50 pmBKK-ONT

17h 05m1 stop

$806STARLUX Airlines

Find Deal

ב', נוב' 3 - ב', נוב' 17

9:45 pm - 4:30 pmONT-BKK

27h 45m1 stop

5:40 pm - 3:50 pmBKK-ONT

37h 10m1 stop

$807STARLUX Airlines

Find Deal

ב', נוב' 10 - א', נוב' 16

12:10 am - 11:15 pmONT-DMK

33h 05m2 stops

7:30 am - 6:00 pmDMK-ONT

24h 30m2 stops

$955

Find Deal

ד', ספט' 17 - ד', ספט' 24

12:10 am - 3:05 pmONT-DMK

24h 55m2 stops

7:30 am - 6:00 pmDMK-ONT

24h 30m2 stops

$985

Find Deal

ד', ספט' 17 - ו', אוק' 3

STARLUX Airlines flights from Ontario to Bangkok

Our best STARLUX Airlines deals on Ontario to Bangkok flight tickets

STARLUX Airlines

Nov 3

ONT9:45 pmOntario

23h 50m

1 stop

BKK12:35 pmBangkok Suvarnabhumi

Nov 17

BKK1:45 pmBangkok Suvarnabhumi

17h 05m

1 stop

ONT3:50 pmOntario

$806

Find similar

STARLUX Airlines

Nov 10

ONT9:45 pmOntario

27h 45m

1 stop

BKK4:30 pmBangkok Suvarnabhumi

Nov 16

BKK5:40 pmBangkok Suvarnabhumi

37h 10m

1 stop

ONT3:50 pmOntario

$807

Find similar

STARLUX Airlines

Aug 20

ONT11:45 pmOntario

22h 15m

1 stop

BKK12:00 pmBangkok Suvarnabhumi

Sep 1

BKK1:10 pmBangkok Suvarnabhumi

17h 55m

1 stop

ONT5:05 pmOntario

$808

Find similar

Delta flights from Ontario to Bangkok

Our best Delta deals on Ontario to Bangkok flight tickets

Delta

Aug 20

ONT6:00 amOntario

25h 45m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Aug 28

BKK9:50 amBangkok Suvarnabhumi

26h 52m

2 stops

ONT10:42 pmOntario

$778

Find similar

Delta

Sep 1

ONT6:05 amOntario

25h 40m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Sep 9

BKK9:50 amBangkok Suvarnabhumi

26h 50m

2 stops

ONT10:40 pmOntario

$779

Find similar

Delta

Aug 31

ONT6:00 amOntario

25h 45m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Sep 16

BKK9:50 amBangkok Suvarnabhumi

26h 50m

2 stops

ONT10:40 pmOntario

$780

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

א' 10/19

6:37 am-1:05 am

2 stops28h 28m

Bangkok Suvarnabhumi

ד' 11/5

1:00 am-5:10 pm

2 stops31h 10m

$739

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

ו' 9/12

6:00 am-9:45 pm

2 stops25h 45m

Bangkok Suvarnabhumi

ש' 9/27

11:30 pm-5:00 pm

2 stops31h 30m

$743

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

ד' 8/20

6:00 am-9:45 pm

2 stops25h 45m

Bangkok Suvarnabhumi

ה' 8/28

9:50 am-10:42 pm

2 stops26h 52m

$778

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

ב' 9/1

6:05 am-9:45 pm

2 stops25h 40m

Bangkok Suvarnabhumi

ג' 9/9

9:50 am-10:40 pm

2 stops26h 50m

$779

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

ו' 1/23

10:50 pm-9:50 am

1 stop20h 00m

Bangkok Suvarnabhumi

ה' 2/5

2:35 am-4:50 pm

1 stop29h 15m

$796

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

ב' 1/26

10:50 pm-9:50 am

1 stop20h 00m

Bangkok Suvarnabhumi

ב' 2/23

2:05 pm-4:50 pm

1 stop17h 45m

$797

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

ב' 11/3

9:45 pm-12:35 pm

1 stop23h 50m

Bangkok Suvarnabhumi

ב' 11/17

1:45 pm-3:50 pm

1 stop17h 05m

$806

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

ב' 11/10

9:45 pm-4:30 pm

1 stop27h 45m

Bangkok Suvarnabhumi

א' 11/16

5:40 pm-3:50 pm

1 stop37h 10m

$807

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

ד' 9/17

12:10 am-11:15 pm

2 stops33h 05m

Bangkok Don Mueang Intl

ד' 9/24

7:30 am-6:00 pm

2 stops24h 30m

$955

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

ד' 9/17

12:10 am-3:05 pm

2 stops24h 55m

Bangkok Don Mueang Intl

ו' 10/3

7:30 am-6:00 pm

2 stops24h 30m

$985

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of September, then book flights to Bangkok from Ontario during March instead. Flights to Bangkok in March, while not as cheap as those in September, still average around $871.

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 Thursday. momondo users have found tickets for Thursday departures for as low as $741. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Ontario to Bangkok on a Sunday will generally be more expensive and average around $936. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Bangkok is in the evening. momondo users have found flights departing from Ontario to Bangkok in the evening for as low as $741. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets at noon because they tend to be around $922. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight 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 $1,018 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 $817 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

Best Price Found	$423
Fastest flight time	19h 00m
Direct flights	None
Airports in Bangkok	2 airports

The best one-way flight to Bangkok from Ontario in the past 72 hours is $423. The best round-trip flight deal from Ontario to Bangkok found on momondo in the last 72 hours is $739.

The fastest flight from Ontario to Bangkok takes 19h 00m

There are no direct flights from Ontario to Bangkok. Popular non-direct route for this connection is Ontario Airport - Bangkok Suvarnabhumi Airport.

There are 2 airports near Bangkok: Bangkok Suvarnabhumi (BKK), Bangkok Don Mueang Intl (DMK)

Search flight deals

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?
There are 4 operators available for flights from Ontario Airport to Bangkok as of July 2025.
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
Korean Air	PriceFrom $781	Free Cancellation	Rating 8.4 1,121 reviews	Search Korean Air flights
STARLUX Airlines	PriceFrom $789	Free Cancellation	Rating 9.0 199 reviews	Search STARLUX Airlines flights
United Airlines	PriceFrom $795	Free Cancellation	Rating 7.4 8,902 reviews	Search United Airlines flights
China Airlines	PriceFrom $822	Free Cancellation	Rating 8.3 754 reviews	Search China 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.