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Cheap flights from Ontario to Bangkok from $626

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 9/1. 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
12:45 am - 11:05 pm
ONT
-
DMK
32h 20m
2 stops
Multiple Airlines Logo
7:30 am - 6:40 pm
DMK
-
ONT
25h 10m
2 stops
$1,060Multiple Airlines
Sun, Jul 12 - Mon, Jul 20
Multiple Airlines Logo
12:10 am - 2:10 pm
ONT
-
DMK
24h 00m
2 stops
Multiple Airlines Logo
6:40 am - 6:00 pm
DMK
-
ONT
25h 20m
2 stops
$1,104Multiple Airlines
Mon, Jun 15 - Tue, Jun 23
Multiple Airlines Logo
12:45 am - 7:30 pm
ONT
-
DMK
28h 45m
1 stop
Multiple Airlines Logo
7:25 am - 6:40 pm
DMK
-
ONT
25h 15m
1 stop
$1,247Multiple Airlines
Thu, Sep 3 - Mon, Sep 14
Multiple Airlines Logo
12:45 am - 9:20 pm
ONT
-
DMK
30h 35m
1 stop
Multiple Airlines Logo
7:25 am - 6:00 pm
DMK
-
ONT
24h 35m
1 stop
$1,270Multiple Airlines
Wed, Sep 9 - Sun, Sep 20
Multiple Airlines Logo
12:45 am - 11:05 pm
ONT
-
DMK
32h 20m
2 stops
Multiple Airlines Logo
7:30 am - 6:40 pm
DMK
-
ONT
25h 10m
2 stops
$1,305Multiple Airlines
Mon, Aug 3 - Tue, Aug 18
Multiple Airlines Logo
12:45 am - 11:05 pm
ONT
-
DMK
32h 20m
2 stops
Multiple Airlines Logo
7:30 am - 6:40 pm
DMK
-
ONT
25h 10m
2 stops
$1,313Multiple Airlines
Thu, Aug 6 - Sat, Aug 22
Multiple Airlines Logo
12:45 am - 5:35 pm
ONT
-
DMK
26h 50m
2 stops
Multiple Airlines Logo
7:30 am - 6:40 pm
DMK
-
ONT
25h 10m
2 stops
$1,342Multiple Airlines
Sat, Aug 1 - Sat, Aug 22
Multiple Airlines Logo
12:45 am - 5:35 pm
ONT
-
DMK
26h 50m
2 stops
Multiple Airlines Logo
7:30 am - 6:40 pm
DMK
-
ONT
25h 10m
2 stops
$1,348Multiple Airlines
Wed, Aug 5 - Sun, Aug 16
Multiple Airlines Logo
12:45 am - 7:55 pm
ONT
-
DMK
29h 10m
2 stops
Multiple Airlines Logo
7:45 am - 6:40 pm
DMK
-
ONT
24h 55m
2 stops
$1,413Multiple Airlines
Wed, Aug 12 - Fri, Aug 21
Multiple Airlines Logo
12:45 am - 2:10 pm
ONT
-
DMK
23h 25m
2 stops
Multiple Airlines Logo
6:40 am - 6:40 pm
DMK
-
ONT
26h 00m
2 stops
$1,419Multiple Airlines
Mon, Aug 31 - Mon, Sep 14

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 May 12, 2026.
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

Cheapest round-trip

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Sun 7/12

12:45 am-11:05 pm

2 stops32h 20m

Bangkok Don Mueang Intl

Mon 7/20

7:30 am-6:40 pm

2 stops25h 10m

$1,060
Quickest round-trip

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Mon 6/15

12:10 am-2:10 pm

2 stops24h 00m

Bangkok Don Mueang Intl

Tue 6/23

6:40 am-6:00 pm

2 stops25h 20m

$1,104

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Thu 9/3

12:45 am-7:30 pm

1 stop28h 45m

Bangkok Don Mueang Intl

Mon 9/14

7:25 am-6:40 pm

1 stop25h 15m

$1,247

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Wed 9/9

12:45 am-9:20 pm

1 stop30h 35m

Bangkok Don Mueang Intl

Sun 9/20

7:25 am-6:00 pm

1 stop24h 35m

$1,270

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Mon 8/3

12:45 am-11:05 pm

2 stops32h 20m

Bangkok Don Mueang Intl

Tue 8/18

7:30 am-6:40 pm

2 stops25h 10m

$1,305

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Thu 8/6

12:45 am-11:05 pm

2 stops32h 20m

Bangkok Don Mueang Intl

Sat 8/22

7:30 am-6:40 pm

2 stops25h 10m

$1,313

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Sat 8/1

12:45 am-5:35 pm

2 stops26h 50m

Bangkok Don Mueang Intl

Sat 8/22

7:30 am-6:40 pm

2 stops25h 10m

$1,342

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Wed 8/5

12:45 am-5:35 pm

2 stops26h 50m

Bangkok Don Mueang Intl

Sun 8/16

7:30 am-6:40 pm

2 stops25h 10m

$1,348

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Wed 8/12

12:45 am-7:55 pm

2 stops29h 10m

Bangkok Don Mueang Intl

Fri 8/21

7:45 am-6:40 pm

2 stops24h 55m

$1,413

OntarioBangkok

ONT - DMK

ONTDMK

Ontario

Mon 8/31

12:45 am-2:10 pm

2 stops23h 25m

Bangkok Don Mueang Intl

Mon 9/14

6:40 am-6:40 pm

2 stops26h 00m

$1,419

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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

24h 50m

Direct flights

None
The fastest flight from Ontario to Bangkok Don Mueang Intl Airport takes 24h 50m
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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Frequently asked questions about flying from Ontario to Bangkok Don Mueang Intl Airport

  • 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 24h 50m.

  • 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.

Frequently asked questions about flying from Ontario to Bangkok Don Mueang Intl Airport

  • How do I get Price Alerts for flights from Ontario to Bangkok Don Mueang Intl Airport?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Ontario from Bangkok Don Mueang Intl Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Ontario to Bangkok Don Mueang Intl Airport with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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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