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 22 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 January 2026.

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.

$287 Cheap Flights from Ontario to Bangkok in 2026

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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.

6:10 am - 5:10 am

ONT

BKK

32h 00m

2 stops

7:10 am - 5:41 pm

BKK

ONT

24h 31m

2 stops

$719United Airlines

Thu, Feb 19 - Wed, Mar 11

6:49 pm - 9:45 am

ONT

BKK

24h 56m

2 stops

9:35 am - 10:45 pm

BKK

ONT

27h 10m

2 stops

$724United Airlines

Wed, Apr 8 - Thu, Apr 23

11:05 am - 9:45 am

ONT

BKK

32h 40m

2 stops

7:00 am - 11:06 pm

BKK

ONT

30h 06m

2 stops

$727United Airlines

Tue, Apr 7 - Thu, May 21

6:49 pm - 9:45 am

ONT

BKK

24h 56m

2 stops

9:35 am - 10:52 pm

BKK

ONT

27h 17m

2 stops

$729United Airlines

Sat, Apr 4 - Thu, Apr 30

6:15 am - 11:25 am

ONT

BKK

39h 10m

2 stops

9:35 am - 12:22 pm

BKK

ONT

40h 47m

2 stops

$730United Airlines

Wed, Mar 18 - Wed, Apr 29

6:00 am - 11:25 am

ONT

BKK

38h 25m

2 stops

7:00 am - 5:47 pm

BKK

ONT

24h 47m

2 stops

$732United Airlines

Thu, Jan 29 - Sat, May 16

1:27 pm - 9:45 am

ONT

BKK

30h 18m

2 stops

9:35 am - 11:06 pm

BKK

ONT

27h 31m

2 stops

$733United Airlines

Sat, Apr 25 - Sat, May 23

6:10 am - 5:10 am

ONT

BKK

32h 00m

2 stops

4:55 pm - 12:18 pm

BKK

ONT

33h 23m

2 stops

$735United Airlines

Mon, Mar 2 - Tue, Mar 10

6:00 am - 11:40 pm

ONT

BKK

27h 40m

2 stops

9:50 am - 5:15 pm

BKK

ONT

21h 25m

2 stops

$736Delta

Thu, Apr 9 - Mon, Apr 27

6:39 pm - 11:25 am

ONT

BKK

25h 46m

2 stops

4:55 pm - 10:53 pm

BKK

ONT

20h 58m

2 stops

$737Multiple Airlines

Thu, Jan 29 - Sun, Feb 8

United Airlines flights from Ontario to Bangkok

Our best United Airlines deals on Ontario to Bangkok flight tickets

United Airlines

Feb 19

ONT6:10 amOntario

32h 00m

2 stops

BKK5:10 amBangkok Suvarnabhumi

Mar 11

BKK7:10 amBangkok Suvarnabhumi

24h 31m

2 stops

ONT5:41 pmOntario

$719

United Airlines

Apr 8

ONT6:49 pmOntario

24h 56m

2 stops

BKK9:45 amBangkok Suvarnabhumi

Apr 23

BKK9:35 amBangkok Suvarnabhumi

27h 10m

2 stops

ONT10:45 pmOntario

$724

United Airlines

Jan 20

ONT6:00 amOntario

38h 25m

2 stops

BKK11:25 amBangkok Suvarnabhumi

Jan 27

BKK7:10 amBangkok Suvarnabhumi

25h 33m

2 stops

ONT5:43 pmOntario

$726

Delta flights from Ontario to Bangkok

Our best Delta deals on Ontario to Bangkok flight tickets

Delta

Apr 9

ONT6:00 amOntario

27h 40m

2 stops

BKK11:40 pmBangkok Suvarnabhumi

Apr 27

BKK9:50 amBangkok Suvarnabhumi

21h 25m

2 stops

ONT5:15 pmOntario

$736

Delta

Mar 3

ONT7:30 amOntario

26h 15m

2 stops

BKK12:45 amBangkok Suvarnabhumi

Mar 19

BKK9:40 amBangkok Suvarnabhumi

26h 54m

2 stops

ONT10:34 pmOntario

$739

Delta

Mar 9

ONT5:53 pmOntario

39h 27m

2 stops

BKK11:20 pmBangkok Suvarnabhumi

Mar 30

BKK9:40 pmBangkok Suvarnabhumi

40h 10m

2 stops

ONT11:50 pmOntario

$742

Fly from

Fly to

Route

Depart

Return

Price

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 2/19

6:10 am-5:10 am

2 stops32h 00m

Bangkok Suvarnabhumi

Wed 3/11

7:10 am-5:41 pm

2 stops24h 31m

$719

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 4/8

6:49 pm-9:45 am

2 stops24h 56m

Bangkok Suvarnabhumi

Thu 4/23

9:35 am-10:45 pm

2 stops27h 10m

$724

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 4/7

11:05 am-9:45 am

2 stops32h 40m

Bangkok Suvarnabhumi

Thu 5/21

7:00 am-11:06 pm

2 stops30h 06m

$727

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 4/4

6:49 pm-9:45 am

2 stops24h 56m

Bangkok Suvarnabhumi

Thu 4/30

9:35 am-10:52 pm

2 stops27h 17m

$729

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 3/18

6:15 am-11:25 am

2 stops39h 10m

Bangkok Suvarnabhumi

Wed 4/29

9:35 am-12:22 pm

2 stops40h 47m

$730

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 1/29

6:00 am-11:25 am

2 stops38h 25m

Bangkok Suvarnabhumi

Sat 5/16

7:00 am-5:47 pm

2 stops24h 47m

$732

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 4/25

1:27 pm-9:45 am

2 stops30h 18m

Bangkok Suvarnabhumi

Sat 5/23

9:35 am-11:06 pm

2 stops27h 31m

$733

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 3/2

6:10 am-5:10 am

2 stops32h 00m

Bangkok Suvarnabhumi

Tue 3/10

4:55 pm-12:18 pm

2 stops33h 23m

$735

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 4/9

6:00 am-11:40 pm

2 stops27h 40m

Bangkok Suvarnabhumi

Mon 4/27

9:50 am-5:15 pm

2 stops21h 25m

$736

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 1/29

6:39 pm-11:25 am

2 stops25h 46m

Bangkok Suvarnabhumi

Sun 2/8

4:55 pm-10:53 pm

2 stops20h 58m

$737

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 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 $788.

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 Wednesday will generally be more expensive and average around $905. 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 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 $969 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

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 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 3 operators available for flights from Ontario Airport to Bangkok as of January 2026.
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 1,187 reviews	Search Korean Air flights
China Airlines	PriceFrom $718	Free Cancellation	Rating 8.3 798 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $763	Free Cancellation	Rating 8.9 263 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.