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Cheap flights from Ontario to Bangkok from $513

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 7/14. 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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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.
Korean Air Logo
7:00 am - 1:05 am
ONT
-
BKK
28h 05m
2 stops
Korean Air Logo
9:40 pm - 10:40 pm
BKK
-
ONT
39h 00m
2 stops
$835Korean Air
Wed, Sep 2 - Wed, Sep 9
Delta Logo
6:00 am - 9:30 pm
ONT
-
BKK
25h 30m
2 stops
Delta Logo
9:40 am - 5:17 pm
BKK
-
ONT
22h 37m
2 stops
$852Delta
Thu, Oct 29 - Tue, Nov 3
Delta Logo
7:00 am - 9:45 pm
ONT
-
BKK
24h 45m
2 stops
Delta Logo
9:40 pm - 5:16 pm
BKK
-
ONT
33h 36m
2 stops
$853Delta
Fri, Sep 18 - Sat, Oct 3
Delta Logo
6:01 pm - 9:45 pm
ONT
-
BKK
37h 44m
2 stops
Delta Logo
9:50 am - 10:44 pm
BKK
-
ONT
26h 54m
2 stops
$858Delta
Wed, Jul 8 - Tue, Sep 8
Delta Logo
5:05 pm - 11:35 pm
ONT
-
BKK
40h 30m
2 stops
Delta Logo
9:50 am - 10:43 pm
BKK
-
ONT
26h 53m
2 stops
$859Delta
Thu, Oct 8 - Sat, Oct 24
Delta Logo
1:00 pm - 11:35 pm
ONT
-
BKK
44h 35m
2 stops
Delta Logo
9:40 am - 12:16 pm
BKK
-
ONT
40h 36m
2 stops
$864Delta
Thu, Oct 8 - Sat, Oct 31
Delta Logo
6:00 am - 9:30 pm
ONT
-
BKK
25h 30m
2 stops
Delta Logo
9:40 am - 5:17 pm
BKK
-
ONT
22h 37m
2 stops
$877Delta
Thu, Oct 29 - Thu, Nov 12
Delta Logo
6:00 am - 1:05 am
ONT
-
BKK
29h 05m
2 stops
Delta Logo
9:40 am - 5:17 pm
BKK
-
ONT
21h 37m
2 stops
$878Delta
Thu, Oct 8 - Tue, Oct 27
Delta Logo
7:00 am - 11:20 pm
ONT
-
BKK
26h 20m
2 stops
Delta Logo
9:40 am - 4:12 pm
BKK
-
ONT
21h 32m
2 stops
$882Delta
Fri, Oct 30 - Tue, Nov 10
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

Delta flights from Ontario to Bangkok

Our best Delta deals on Ontario to Bangkok flight tickets
Delta
Oct 29
ONT6:00 amOntario
25h 30m
2 stops
BKK9:30 pmBangkok Suvarnabhumi
Nov 3
BKK9:40 amBangkok Suvarnabhumi
22h 37m
2 stops
ONT5:17 pmOntario
$852
Delta
Sep 18
ONT7:00 amOntario
24h 45m
2 stops
BKK9:45 pmBangkok Suvarnabhumi
Oct 3
BKK9:40 pmBangkok Suvarnabhumi
33h 36m
2 stops
ONT5:16 pmOntario
$853
Delta
Jul 8
ONT6:01 pmOntario
37h 44m
2 stops
BKK9:45 pmBangkok Suvarnabhumi
Sep 8
BKK9:50 amBangkok Suvarnabhumi
26h 54m
2 stops
ONT10:44 pmOntario
$858

China Airlines flights from Ontario to Bangkok

Our best China Airlines deals on Ontario to Bangkok flight tickets
China Airlines
Aug 26
ONT12:45 amOntario
34h 40m
1 stop
BKK1:25 amBangkok Suvarnabhumi
Sep 9
BKK2:40 amBangkok Suvarnabhumi
30h 00m
1 stop
ONT6:40 pmOntario
$1,014
China Airlines
Aug 21
ONT12:45 amOntario
19h 00m
1 stop
BKK9:45 amBangkok Suvarnabhumi
Aug 24
BKK2:40 amBangkok Suvarnabhumi
30h 00m
1 stop
ONT6:40 pmOntario
$1,015
China Airlines
Sep 21
ONT12:10 amOntario
19h 35m
1 stop
BKK9:45 amBangkok Suvarnabhumi
Oct 6
BKK1:20 pmBangkok Suvarnabhumi
18h 40m
1 stop
ONT6:00 pmOntario
$1,024

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Bangkok 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 11, 2026.
Use the filters below to find and compare flights from Ontario to Bangkok that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 9/2

7:00 am-1:05 am

2 stops28h 05m

Bangkok Suvarnabhumi

Wed 9/9

9:40 pm-10:40 pm

2 stops39h 00m

$835

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 10/29

6:00 am-9:30 pm

2 stops25h 30m

Bangkok Suvarnabhumi

Tue 11/3

9:40 am-5:17 pm

2 stops22h 37m

$852

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Fri 9/18

7:00 am-9:45 pm

2 stops24h 45m

Bangkok Suvarnabhumi

Sat 10/3

9:40 pm-5:16 pm

2 stops33h 36m

$853

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 7/8

6:01 pm-9:45 pm

2 stops37h 44m

Bangkok Suvarnabhumi

Tue 9/8

9:50 am-10:44 pm

2 stops26h 54m

$858

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 10/8

5:05 pm-11:35 pm

2 stops40h 30m

Bangkok Suvarnabhumi

Sat 10/24

9:50 am-10:43 pm

2 stops26h 53m

$859

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 10/8

1:00 pm-11:35 pm

2 stops44h 35m

Bangkok Suvarnabhumi

Sat 10/31

9:40 am-12:16 pm

2 stops40h 36m

$864

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 10/29

6:00 am-9:30 pm

2 stops25h 30m

Bangkok Suvarnabhumi

Thu 11/12

9:40 am-5:17 pm

2 stops22h 37m

$877

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 10/8

6:00 am-1:05 am

2 stops29h 05m

Bangkok Suvarnabhumi

Tue 10/27

9:40 am-5:17 pm

2 stops21h 37m

$878
Quickest round-trip

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Fri 10/30

7:00 am-11:20 pm

2 stops26h 20m

Bangkok Suvarnabhumi

Tue 11/10

9:40 am-4:12 pm

2 stops21h 32m

$882

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

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

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 typical price of a round-trip flight between Ontario and Bangkok?

What is the cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of July, then book flights to Bangkok from Ontario during October instead. Flights to Bangkok in October, while not as cheap as those in July, still average around $604.

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 $812. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Ontario to Bangkok on a Friday will generally be more expensive and average around $1,353. 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 from Ontario 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 $951 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 $761 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

22h 30m

Direct flights

None
The fastest flight from Ontario to Bangkok takes 22h 30m
There are no direct flights from Ontario to Bangkok. There are no popular flight routes from Ontario to Bangkok.
Search flight deals

Frequently asked questions about flying from Ontario to Bangkok

  • 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 22h 30m.

  • 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?

  • 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
DeltaPriceFrom $457Free CancellationRating
7.9
8,447 reviews
Search Delta flights
Korean AirPriceFrom $616Free CancellationRating
8.4
1,217 reviews
Search Korean Air flights
China AirlinesPriceFrom $717Free CancellationRating
8.3
826 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $763Free CancellationRating
8.9
313 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.

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Find better results for your trip to Thailand

Fly into one of these airports located in Bangkok

Airports listed have a maximum distance of 15.4 mi from Bangkok
Bangkok Suvarnabhumi Airport
Bangkok Don Mueang Intl Airport