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Cheap flights from Ontario to Bangkok from $495

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 5/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Bangkok

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:10 am - 7:30 pm
ONT
-
DMK
29h 20m1 stop
Multiple Airlines Logo
6:15 am - 6:00 pm
DMK
-
ONT
25h 45m1 stop
$990Multiple Airlines
Sat, Mar 28 - Thu, Apr 9
Multiple Airlines Logo
12:10 am - 3:50 pm
ONT
-
DMK
25h 40m2 stops
Multiple Airlines Logo
6:30 am - 6:00 pm
DMK
-
ONT
25h 30m2 stops
$1,029Multiple Airlines
Mon, Apr 6 - Thu, Apr 16
Multiple Airlines Logo
12:10 am - 7:30 pm
ONT
-
DMK
29h 20m1 stop
Multiple Airlines Logo
7:25 am - 6:00 pm
DMK
-
ONT
24h 35m1 stop
$1,055Multiple Airlines
Tue, Apr 7 - Wed, Apr 22
Multiple Airlines Logo
12:10 am - 4:20 pm
ONT
-
DMK
26h 10m1 stop
Multiple Airlines Logo
11:00 pm - 5:05 pm
DMK
-
ONT
32h 05m2 stops
$1,060Multiple Airlines
Tue, May 19 - Thu, Jun 4
Multiple Airlines Logo
12:10 am - 7:30 pm
ONT
-
DMK
29h 20m1 stop
Multiple Airlines Logo
7:30 am - 6:00 pm
DMK
-
ONT
24h 30m2 stops
$1,155Multiple Airlines
Tue, Apr 7 - Wed, Apr 22
Multiple Airlines Logo
12:10 am - 2:10 pm
ONT
-
DMK
24h 00m2 stops
Multiple Airlines Logo
7:30 am - 6:00 pm
DMK
-
ONT
24h 30m2 stops
$1,185Multiple Airlines
Tue, Apr 7 - Wed, Apr 22
Multiple Airlines Logo
11:10 pm - 7:30 pm
ONT
-
DMK
30h 20m1 stop
Multiple Airlines Logo
11:55 pm - 5:05 pm
DMK
-
ONT
31h 10m2 stops
$1,395Multiple Airlines
Sat, Apr 4 - Sun, Apr 26
Multiple Airlines Logo
12:10 am - 9:20 pm
ONT
-
DMK
31h 10m1 stop
Multiple Airlines Logo
11:00 pm - 5:05 pm
DMK
-
ONT
32h 05m2 stops
$1,505Multiple Airlines
Fri, May 29 - Sun, Jun 14
Multiple Airlines Logo
11:10 pm - 7:30 pm
ONT
-
DMK
30h 20m1 stop
Multiple Airlines Logo
11:55 pm - 6:00 pm
DMK
-
ONT
32h 05m2 stops
$1,713Multiple Airlines
Wed, Apr 15 - Fri, May 1
Multiple Airlines Logo
10:50 pm - 12:15 am
ONT
-
DMK
34h 25m1 stop
Multiple Airlines Logo
11:50 am - 11:56 pm
DMK
-
ONT
51h 06m2 stops
$1,759Multiple Airlines
Sun, Dec 28 - Sat, Jan 10

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 December 18, 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 3/28

12:10 am-7:30 pm

1 stop29h 20m

Bangkok Don Mueang Intl

Thu 4/9

6:15 am-6:00 pm

1 stop25h 45m

$990

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Mon 4/6

12:10 am-3:50 pm

2 stops25h 40m

Bangkok Don Mueang Intl

Thu 4/16

6:30 am-6:00 pm

2 stops25h 30m

$1,029

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Tue 4/7

12:10 am-7:30 pm

1 stop29h 20m

Bangkok Don Mueang Intl

Wed 4/22

7:25 am-6:00 pm

1 stop24h 35m

$1,055

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Tue 5/19

12:10 am-4:20 pm

1 stop26h 10m

Bangkok Don Mueang Intl

Thu 6/4

11:00 pm-5:05 pm

2 stops32h 05m

$1,060

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Tue 4/7

12:10 am-7:30 pm

1 stop29h 20m

Bangkok Don Mueang Intl

Wed 4/22

7:30 am-6:00 pm

2 stops24h 30m

$1,155

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Tue 4/7

12:10 am-2:10 pm

2 stops24h 00m

Bangkok Don Mueang Intl

Wed 4/22

7:30 am-6:00 pm

2 stops24h 30m

$1,185

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Sat 4/4

11:10 pm-7:30 pm

1 stop30h 20m

Bangkok Don Mueang Intl

Sun 4/26

11:55 pm-5:05 pm

2 stops31h 10m

$1,395

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Fri 5/29

12:10 am-9:20 pm

1 stop31h 10m

Bangkok Don Mueang Intl

Sun 6/14

11:00 pm-5:05 pm

2 stops32h 05m

$1,505

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Wed 4/15

11:10 pm-7:30 pm

1 stop30h 20m

Bangkok Don Mueang Intl

Fri 5/1

11:55 pm-6:00 pm

2 stops32h 05m

$1,713

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Sun 12/28

10:50 pm-12:15 am

1 stop34h 25m

Bangkok Don Mueang Intl

Sat 1/10

11:50 am-11:56 pm

2 stops51h 06m

$1,759

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

Fastest flight time

30h 20m

Direct flights

None
The fastest flight from Ontario to Bangkok Don Mueang Intl Airport takes 30h 20m
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.
Search flight deals

  • 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 30h 20m.

  • 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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