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.

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

Korean Air, Japan Airlines, and Delta are the most popular carriers 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 4 operators available for flights from Ontario Airport to Bangkok as of August 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.

$386 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

6:00 am - 11:25 pmONT-BKK

27h 25m2 stops

2:35 am - 5:00 pmBKK-ONT

28h 25m2 stops

$725Korean Air

Find Deal

Mon, Sep 1 - Sat, Sep 13

6:00 am - 9:45 pmONT-BKK

25h 45m2 stops

2:35 am - 5:11 pmBKK-ONT

28h 36m2 stops

$728Korean Air

Find Deal

Mon, Sep 1 - Thu, Sep 4

11:59 pm - 11:00 pmONT-BKK

33h 01m2 stops

8:05 am - 6:54 pmBKK-ONT

24h 49m2 stops

$730American Airlines

Find Deal

Mon, Sep 1 - Sun, Sep 14

6:00 am - 11:25 pmONT-BKK

27h 25m2 stops

2:35 am - 5:00 pmBKK-ONT

28h 25m2 stops

$765Korean Air

Find Deal

Fri, Sep 19 - Mon, Sep 29

10:50 pm - 1:35 amONT-BKK

35h 45m1 stop

10:55 am - 4:50 pmBKK-ONT

20h 55m1 stop

$766China Airlines

Find Deal

Mon, Nov 3 - Mon, Nov 17

12:10 am - 4:45 pmONT-BKK

26h 35m1 stop

2:35 am - 4:50 pmBKK-ONT

29h 15m1 stop

$767China Airlines

Find Deal

Fri, Oct 24 - Fri, Nov 7

6:05 am - 9:45 pmONT-BKK

25h 40m2 stops

9:50 am - 10:41 pmBKK-ONT

26h 51m2 stops

$778Delta

Find Deal

Sun, Aug 31 - Mon, Oct 13

11:10 pm - 12:00 pmONT-BKK

22h 50m1 stop

1:45 pm - 4:30 pmBKK-ONT

17h 45m1 stop

$806STARLUX Airlines

Find Deal

Wed, Oct 22 - Mon, Nov 10

11:10 pm - 4:40 pmONT-BKK

27h 30m1 stop

1:10 pm - 5:05 pmBKK-ONT

17h 55m1 stop

$808STARLUX Airlines

Find Deal

Mon, Sep 1 - Sat, Sep 13

6:00 am - 1:05 amONT-BKK

29h 05m2 stops

11:15 pm - 5:17 pmBKK-ONT

33h 02m2 stops

$827Delta

Find Deal

Wed, Sep 3 - Tue, Dec 2

Delta flights from Ontario to Bangkok

Our best Delta deals on Ontario to Bangkok flight tickets

Delta

Aug 31

ONT6:05 amOntario

25h 40m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Oct 13

BKK9:50 amBangkok Suvarnabhumi

26h 51m

2 stops

ONT10:41 pmOntario

$778

Find similar

Delta

Sep 3

ONT6:00 amOntario

29h 05m

2 stops

BKK1:05 amBangkok Suvarnabhumi

Dec 2

BKK11:15 pmBangkok Suvarnabhumi

33h 02m

2 stops

ONT5:17 pmOntario

$827

Find similar

Delta

Sep 28

ONT6:00 amOntario

25h 45m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

Oct 15

BKK9:50 amBangkok Suvarnabhumi

45h 20m

2 stops

ONT5:10 pmOntario

$828

Find similar

China Airlines flights from Ontario to Bangkok

Our best China Airlines deals on Ontario to Bangkok flight tickets

China Airlines

Nov 3

ONT10:50 pmOntario

35h 45m

1 stop

BKK1:35 amBangkok Suvarnabhumi

Nov 17

BKK10:55 amBangkok Suvarnabhumi

20h 55m

1 stop

ONT4:50 pmOntario

$766

Find similar

China Airlines

Oct 24

ONT12:10 amOntario

26h 35m

1 stop

BKK4:45 pmBangkok Suvarnabhumi

Nov 7

BKK2:35 amBangkok Suvarnabhumi

29h 15m

1 stop

ONT4:50 pmOntario

$767

Find similar

China Airlines

Aug 31

ONT12:45 amOntario

34h 40m

1 stop

BKK1:25 amBangkok Suvarnabhumi

Sep 8

BKK10:50 amBangkok Suvarnabhumi

21h 50m

1 stop

ONT6:40 pmOntario

$769

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 9/1

6:00 am-11:25 pm

2 stops27h 25m

Bangkok Suvarnabhumi

Sat 9/13

2:35 am-5:00 pm

2 stops28h 25m

$725

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 9/1

6:00 am-9:45 pm

2 stops25h 45m

Bangkok Suvarnabhumi

Thu 9/4

2:35 am-5:11 pm

2 stops28h 36m

$728

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 9/1

11:59 pm-11:00 pm

2 stops33h 01m

Bangkok Suvarnabhumi

Sun 9/14

8:05 am-6:54 pm

2 stops24h 49m

$730

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Fri 9/19

6:00 am-11:25 pm

2 stops27h 25m

Bangkok Suvarnabhumi

Mon 9/29

2:35 am-5:00 pm

2 stops28h 25m

$765

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 11/3

10:50 pm-1:35 am

1 stop35h 45m

Bangkok Suvarnabhumi

Mon 11/17

10:55 am-4:50 pm

1 stop20h 55m

$766

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Fri 10/24

12:10 am-4:45 pm

1 stop26h 35m

Bangkok Suvarnabhumi

Fri 11/7

2:35 am-4:50 pm

1 stop29h 15m

$767

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 8/31

6:05 am-9:45 pm

2 stops25h 40m

Bangkok Suvarnabhumi

Mon 10/13

9:50 am-10:41 pm

2 stops26h 51m

$778

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 10/22

11:10 pm-12:00 pm

1 stop22h 50m

Bangkok Suvarnabhumi

Mon 11/10

1:45 pm-4:30 pm

1 stop17h 45m

$806

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 9/1

11:10 pm-4:40 pm

1 stop27h 30m

Bangkok Suvarnabhumi

Sat 9/13

1:10 pm-5:05 pm

1 stop17h 55m

$808

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 9/3

6:00 am-1:05 am

2 stops29h 05m

Bangkok Suvarnabhumi

Tue 12/2

11:15 pm-5:17 pm

2 stops33h 02m

$827

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 August instead. Flights to Bangkok in August, while not as cheap as those in September, still average around $865.

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 $1,015 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 $804 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	$386
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 $386. The best round-trip flight deal from Ontario to Bangkok found on momondo in the last 72 hours is $725.

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)

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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 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 August 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 1,131 reviews	Search Korean Air flights
STARLUX Airlines	PriceFrom $789	Free Cancellation	Rating 9.0 206 reviews	Search STARLUX Airlines flights
United Airlines	PriceFrom $795	Free Cancellation	Rating 7.4 8,925 reviews	Search United Airlines flights
China Airlines	PriceFrom $815	Free Cancellation	Rating 8.3 764 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.