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Cheap flights from Ontario to Bangkok from $537

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 11/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ontario to Bangkok

Cheap round-trip flights

Logo
12:10 am - 11:15 pmONT-DMK
33h 05m2 stops
Logo
7:40 am - 5:50 pmDMK-ONT
24h 10m2 stops
$991
Find Deal
Sat, Oct 18 - Mon, Oct 27
Logo
12:10 am - 11:15 pmONT-DMK
33h 05m2 stops
Logo
7:40 am - 5:50 pmDMK-ONT
24h 10m2 stops
$994
Find Deal
Thu, Oct 16 - Mon, Oct 27
Logo
12:10 am - 11:15 pmONT-DMK
33h 05m2 stops
Logo
7:30 am - 6:00 pmDMK-ONT
24h 30m2 stops
$995
Find Deal
Thu, Oct 16 - Fri, Oct 24
Logo
12:10 am - 11:15 pmONT-DMK
33h 05m2 stops
Logo
7:30 am - 6:00 pmDMK-ONT
24h 30m2 stops
$997
Find Deal
Tue, Oct 7 - Sun, Oct 12
Logo
12:10 am - 3:05 pmONT-DMK
24h 55m2 stops
Logo
7:30 am - 6:00 pmDMK-ONT
24h 30m2 stops
$998
Find Deal
Mon, Sep 29 - Tue, Oct 7
Logo
12:10 am - 11:15 pmONT-DMK
33h 05m2 stops
Logo
7:30 am - 6:00 pmDMK-ONT
24h 30m2 stops
$999
Find Deal
Mon, Oct 13 - Tue, Oct 21
Logo
12:10 am - 5:35 pmONT-DMK
27h 25m2 stops
Logo
7:30 am - 6:00 pmDMK-ONT
24h 30m2 stops
$1,000
Find Deal
Sun, Oct 12 - Wed, Oct 15
Logo
12:10 am - 11:15 pmONT-DMK
33h 05m2 stops
Logo
7:30 am - 6:00 pmDMK-ONT
24h 30m2 stops
$1,002
Find Deal
Sun, Oct 12 - Wed, Oct 15
Logo
12:10 am - 3:05 pmONT-DMK
24h 55m2 stops
Logo
7:30 am - 6:00 pmDMK-ONT
24h 30m2 stops
$1,005
Find Deal
Mon, Sep 29 - Mon, Oct 13
Logo
12:10 am - 3:05 pmONT-DMK
24h 55m2 stops
Logo
7:40 am - 5:50 pmDMK-ONT
24h 10m2 stops
$1,006
Find Deal
Sat, Oct 18 - Tue, Oct 28

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Bangkok Don Mueang Intl Airport 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 September 15, 2025.
Use the filters below to find and compare flights from Ontario to Bangkok Don Mueang Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Sat 10/18

12:10 am-11:15 pm

2 stops33h 05m

Bangkok Don Mueang Intl

Mon 10/27

7:40 am-5:50 pm

2 stops24h 10m

$991

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Thu 10/16

12:10 am-11:15 pm

2 stops33h 05m

Bangkok Don Mueang Intl

Mon 10/27

7:40 am-5:50 pm

2 stops24h 10m

$994

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Thu 10/16

12:10 am-11:15 pm

2 stops33h 05m

Bangkok Don Mueang Intl

Fri 10/24

7:30 am-6:00 pm

2 stops24h 30m

$995

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Tue 10/7

12:10 am-11:15 pm

2 stops33h 05m

Bangkok Don Mueang Intl

Sun 10/12

7:30 am-6:00 pm

2 stops24h 30m

$997

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Mon 9/29

12:10 am-3:05 pm

2 stops24h 55m

Bangkok Don Mueang Intl

Tue 10/7

7:30 am-6:00 pm

2 stops24h 30m

$998

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Mon 10/13

12:10 am-11:15 pm

2 stops33h 05m

Bangkok Don Mueang Intl

Tue 10/21

7:30 am-6:00 pm

2 stops24h 30m

$999

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Sun 10/12

12:10 am-5:35 pm

2 stops27h 25m

Bangkok Don Mueang Intl

Wed 10/15

7:30 am-6:00 pm

2 stops24h 30m

$1,000

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Sun 10/12

12:10 am-11:15 pm

2 stops33h 05m

Bangkok Don Mueang Intl

Wed 10/15

7:30 am-6:00 pm

2 stops24h 30m

$1,002

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Mon 9/29

12:10 am-3:05 pm

2 stops24h 55m

Bangkok Don Mueang Intl

Mon 10/13

7:30 am-6:00 pm

2 stops24h 30m

$1,005

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Sat 10/18

12:10 am-3:05 pm

2 stops24h 55m

Bangkok Don Mueang Intl

Tue 10/28

7:40 am-5:50 pm

2 stops24h 10m

$1,006

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 Don Mueang Intl Airport

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 cheapest day to depart on your flight to Bangkok Don Mueang Intl Airport?

The cheapest day to depart from Ontario to Bangkok Don Mueang Intl Airport is on a Tuesday. Travelers who choose to depart for Bangkok Don Mueang Intl Airport on a Tuesday will often find tickets for as low as $867. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,187. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bangkok Don Mueang Intl Airport.

What is the cheapest time of day to depart on your flight to Bangkok Don Mueang Intl Airport?

Flying to Bangkok Don Mueang Intl Airport from Ontario at noon is the least expensive time of day to depart. momondo users have found prices as low as $879 when looking at flights departing at noon. Flights in the evening are often more expensive with an average ticket price of $1,027.

When to book flights from Ontario to Bangkok Don Mueang Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Bangkok Don Mueang Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Bangkok Don Mueang Intl Airport (ONT to DMK) flight deals and tips

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

Direct flights

None
There are no direct flights from Ontario to Bangkok Don Mueang Intl Airport. There are no popular flight routes from Ontario to Bangkok Don Mueang Intl Airport.
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  • How far is Ontario to Bangkok Don Mueang Intl by plane?

    A flight from Ontario to Bangkok Don Mueang Intl will travel around 8270.6 mi. By plane, this route typically takes 21h 35m.

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

    Prices for flights from Ontario Airport to Bangkok Don Mueang Intl Airport were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Bangkok Don Mueang Intl Airport.

  • What documentation or ID do you need to fly to Bangkok Don Mueang Intl Airport?

    The travel and health documents required for your trip to Bangkok Don Mueang Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bangkok Don Mueang Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Bangkok. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Ontario to Bangkok flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bangkok from Ontario.

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

Yes. momondo can track prices for Ontario to Bangkok flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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