What airlines fly to Bangkok?

Singapore Airlines, Asiana Airlines and Cathay Pacific are the top three most popular airlines that fly to Bangkok from Ontario according to our data. Singapore Airlines is the first choice among our users, with 28% 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.

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

Delta is the most popular carrier operating from Ontario to Bangkok

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 3 operators available for flights from Ontario Airport to Bangkok as of December 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.

$358 Cheap Flights from Ontario to Bangkok in 2025/26

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Find the cheapest flights from Ontario to Bangkok

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

10:50 pm - 1:35 am

ONT

BKK

35h 45m1 stop

2:05 pm - 4:50 pm

BKK

ONT

17h 45m1 stop

$724China Airlines

Sat, Jan 10 - Sat, Jan 24

6:00 am - 9:30 pm

ONT

BKK

25h 30m2 stops

9:50 am - 5:13 pm

BKK

ONT

45h 23m2 stops

$725Korean Air

Tue, Mar 10 - Mon, Mar 30

6:00 am - 5:10 am

ONT

BKK

32h 10m2 stops

7:10 am - 12:38 pm

BKK

ONT

20h 28m2 stops

$726United Airlines

Wed, Jan 7 - Wed, Mar 4

11:50 pm - 4:45 pm

ONT

BKK

26h 55m1 stop

2:40 am - 6:00 pm

BKK

ONT

29h 20m1 stop

$728China Airlines

Tue, Mar 10 - Wed, Apr 1

6:00 am - 11:55 pm

ONT

BKK

27h 55m2 stops

7:00 am - 11:06 pm

BKK

ONT

30h 06m2 stops

$729United Airlines

Wed, Apr 8 - Wed, Apr 22

11:50 pm - 1:35 am

ONT

BKK

35h 45m1 stop

10:50 am - 6:00 pm

BKK

ONT

21h 10m1 stop

$730China Airlines

Tue, Mar 10 - Thu, Apr 2

6:00 am - 11:25 am

ONT

BKK

38h 25m2 stops

9:35 am - 11:06 pm

BKK

ONT

27h 31m2 stops

$731United Airlines

Sun, Jan 18 - Tue, May 26

10:50 pm - 9:50 am

ONT

BKK

20h 00m1 stop

2:05 pm - 4:50 pm

BKK

ONT

17h 45m1 stop

$733China Airlines

Sun, Feb 8 - Mon, Feb 16

7:30 am - 12:45 am

ONT

BKK

26h 15m2 stops

9:40 am - 10:51 pm

BKK

ONT

28h 11m2 stops

$734Delta

Mon, Jan 12 - Wed, Jan 21

12:10 am - 9:45 am

ONT

BKK

19h 35m1 stop

2:40 am - 6:00 pm

BKK

ONT

29h 20m1 stop

$735China Airlines

Sat, Mar 28 - Mon, Apr 6

China Airlines flights from Ontario to Bangkok

Our best China Airlines deals on Ontario to Bangkok flight tickets

China Airlines

Feb 10

ONT10:50 pmOntario

23h 15m

1 stop

BKK1:05 pmBangkok Suvarnabhumi

Mar 24

BKK10:55 amBangkok Suvarnabhumi

20h 55m

1 stop

ONT5:50 pmOntario

$724

Find similar

China Airlines

Mar 24

ONT11:50 pmOntario

20h 00m

1 stop

BKK9:50 amBangkok Suvarnabhumi

May 29

BKK2:40 amBangkok Suvarnabhumi

29h 20m

1 stop

ONT6:00 pmOntario

$727

Find similar

China Airlines

Mar 10

ONT11:50 pmOntario

26h 55m

1 stop

BKK4:45 pmBangkok Suvarnabhumi

Apr 1

BKK2:40 amBangkok Suvarnabhumi

29h 20m

1 stop

ONT6:00 pmOntario

$728

Find similar

Delta flights from Ontario to Bangkok

Our best Delta deals on Ontario to Bangkok flight tickets

Delta

Jan 12

ONT7:30 amOntario

26h 15m

2 stops

BKK12:45 amBangkok Suvarnabhumi

Jan 21

BKK9:40 amBangkok Suvarnabhumi

28h 11m

2 stops

ONT10:51 pmOntario

$734

Find similar

Delta

Mar 2

ONT7:30 amOntario

26h 15m

2 stops

BKK12:45 amBangkok Suvarnabhumi

Mar 30

BKK9:40 pmBangkok Suvarnabhumi

38h 54m

2 stops

ONT10:34 pmOntario

$744

Find similar

Delta

Feb 14

ONT3:30 pmOntario

42h 25m

2 stops

BKK12:55 amBangkok Suvarnabhumi

Feb 28

BKK12:55 amBangkok Suvarnabhumi

27h 59m

2 stops

ONT1:54 pmOntario

$765

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 1/10

10:50 pm-1:35 am

1 stop35h 45m

Bangkok Suvarnabhumi

Sat 1/24

2:05 pm-4:50 pm

1 stop17h 45m

$724

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 3/10

6:00 am-9:30 pm

2 stops25h 30m

Bangkok Suvarnabhumi

Mon 3/30

9:50 am-5:13 pm

2 stops45h 23m

$725

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 1/7

6:00 am-5:10 am

2 stops32h 10m

Bangkok Suvarnabhumi

Wed 3/4

7:10 am-12:38 pm

2 stops20h 28m

$726

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 3/10

11:50 pm-4:45 pm

1 stop26h 55m

Bangkok Suvarnabhumi

Wed 4/1

2:40 am-6:00 pm

1 stop29h 20m

$728

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 4/8

6:00 am-11:55 pm

2 stops27h 55m

Bangkok Suvarnabhumi

Wed 4/22

7:00 am-11:06 pm

2 stops30h 06m

$729

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 3/10

11:50 pm-1:35 am

1 stop35h 45m

Bangkok Suvarnabhumi

Thu 4/2

10:50 am-6:00 pm

1 stop21h 10m

$730

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 1/18

6:00 am-11:25 am

2 stops38h 25m

Bangkok Suvarnabhumi

Tue 5/26

9:35 am-11:06 pm

2 stops27h 31m

$731

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 2/8

10:50 pm-9:50 am

1 stop20h 00m

Bangkok Suvarnabhumi

Mon 2/16

2:05 pm-4:50 pm

1 stop17h 45m

$733

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 1/12

7:30 am-12:45 am

2 stops26h 15m

Bangkok Suvarnabhumi

Wed 1/21

9:40 am-10:51 pm

2 stops28h 11m

$734

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 3/28

12:10 am-9:45 am

1 stop19h 35m

Bangkok Suvarnabhumi

Mon 4/6

2:40 am-6:00 pm

1 stop29h 20m

$735

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 October, then book flights to Bangkok from Ontario during September instead. Flights to Bangkok in September, while not as cheap as those in October, still average around $824.

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 Sunday. momondo users have found tickets for Sunday departures for as low as $699. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Ontario to Bangkok on a Monday will generally be more expensive and average around $896. 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 $1,002 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 $762 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

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 19h 35m.
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 3 operators available for flights from Ontario Airport to Bangkok as of December 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 $637	Free Cancellation	Rating 8.4 1,179 reviews	Search Korean Air flights
China Airlines	PriceFrom $736	Free Cancellation	Rating 8.3 787 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $787	Free Cancellation	Rating 8.9 243 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.