BKK - ONT

$520 Find Cheap Flights from Bangkok to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Bangkok to Ontario departing on 5/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bangkok to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bangkok to Ontario, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Bangkok to Ontario (BKK-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Bangkok to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Bangkok to Ontario

Mon, Sep 22 - Mon, Sep 29
China Airlines Logo
1:20 pm - 6:00 pmBKK-ONT
18h 40m1 stop
China Airlines Logo
12:10 am - 4:20 pmONT-BKK
26h 10m1 stop
$836China Airlines
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Sun, Sep 21 - Mon, Sep 29
China Airlines Logo
2:40 am - 6:00 pmBKK-ONT
29h 20m1 stop
China Airlines Logo
12:10 am - 9:45 amONT-BKK
19h 35m1 stop
$845China Airlines
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Sun, Nov 9 - Sun, Nov 30
China Airlines Logo
2:05 pm - 4:50 pmBKK-ONT
17h 45m1 stop
China Airlines Logo
10:45 pm - 9:50 amONT-BKK
20h 05m1 stop
$852China Airlines
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Mon, Sep 15 - Tue, Nov 18
United Airlines Logo
9:35 am - 5:37 pmBKK-ONT
46h 02m2 stops
United Airlines Logo
5:40 am - 12:05 amONT-BKK
27h 25m2 stops
$889United Airlines
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Wed, Oct 15 - Mon, Oct 20
United Airlines Logo
7:00 am - 5:32 pmBKK-ONT
24h 32m2 stops
United Airlines Logo
5:10 am - 11:55 pmONT-BKK
28h 45m2 stops
$892United Airlines
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Mon, Jun 16 - Wed, Jul 2
STARLUX Airlines Logo
1:10 pm - 5:05 pmBKK-ONT
17h 55m1 stop
STARLUX Airlines Logo
11:45 pm - 12:00 pmONT-BKK
22h 15m1 stop
$923STARLUX Airlines
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Wed, Sep 17 - Tue, Nov 18
Logo
10:50 am - 6:00 pmBKK-ONT
21h 10m1 stop
Logo
7:00 am - 9:30 pmONT-BKK
23h 30m2 stops
$984
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Fri, Jun 27 - Fri, Jul 4
STARLUX Airlines Logo
1:10 pm - 5:05 pmBKK-ONT
17h 55m1 stop
STARLUX Airlines Logo
11:45 pm - 12:00 pmONT-BKK
22h 15m1 stop
$1,003STARLUX Airlines
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Mon, Jun 16 - Tue, Jul 1
Logo
10:25 am - 6:00 pmBKK-ONT
21h 35m2 stops
Logo
12:45 am - 12:05 amONT-BKK
33h 20m2 stops
$1,098
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Fri, Jun 27 - Fri, Jul 4
Japan Airlines Logo
8:05 am - 6:04 pmBKK-ONT
23h 59m2 stops
Japan Airlines Logo
6:00 am - 11:00 pmONT-BKK
27h 00m2 stops
$1,251Japan Airlines
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KAYAK's insights & trends for Bangkok to Ontario flights

Get data-powered insights and trends into flights from Bangkok to Ontario to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Bangkok to Ontario?

The average price of all round-trip flights from Bangkok Suvarnabhumi Airport to Ontario clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Ontario on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Bangkok to Ontario. For your return ticket, we recommend flying on a Wednesday and avoiding Fridays for the best deals.

What is the cheapest month to fly from Bangkok Suvarnabhumi Airport to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Bangkok Suvarnabhumi Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Bangkok Suvarnabhumi Airport to Ontario is February, where tickets cost $872 (return) on average. On the other hand, the most expensive months are November and July, where the average cost of round-trip tickets is $1,114 and $1,099 respectively.

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Good to know

Low seasonAugust
High seasonFebruary
Cheapest flight$520
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Bangkok to Ontario

When to book flights from Bangkok to Ontario

Are your dates flexible? Find out the best times to travel from Bangkok to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Bangkok to Ontario flights

  • What is the cheapest flight from Bangkok Suvarnabhumi Airport to Ontario?

    In the last 3 days, the lowest price for a flight from Bangkok Suvarnabhumi Airport to Ontario was $520 for a one-way ticket and $836 for a round-trip.

  • Do I need a passport to fly between Bangkok and Ontario?

    A passport is required to fly from Bangkok to Ontario.

  • Which aircraft models fly most regularly from Bangkok to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Bangkok to Ontario?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Bangkok and Ontario, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Bangkok to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Bangkok to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Bangkok to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Bangkok is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Bangkok to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Bangkok with another airline. Booking your flights between Bangkok and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Bangkok to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Bangkok up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Bangkok to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Bangkok to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Bangkok to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.3
China AirlinesOverall score based on 732 reviews
8.3Boarding
7.8Food
8.0Entertainment
8.0Comfort
8.5Crew
Airline reviews

Staff was so nice and very helpful with directions aswell!

10.0 ExcellentAnonymous, Apr 2025MNL - TPE
Read more China Airlines reviews

Staff was so nice and very helpful with directions aswell!

It was our first time flying with China Airlines and had a very nice experience. The airline staff & crews both on the ground and air were very nice. Food on the plane was very good. Will recommend it to family and friends.

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

I don’t think I’ll be flying them again. Tight seats, no flowing air or air nozzles that you can turn air on you, for those who could have motion sickness this would be your worst nightmare. The pilot was great and experienced (which is what you want when flying 12 hours) overall I’m thankful knowledgeable pilots!

Very routh cabin crew food is only 2 meals for 13 hours fry with them They should get better training how to service good super routh language and talking with customer

staff are super nice and effiecient! It was a very comfortable and relaxing flight

Boarding could have been a little bit better but other than that it was a pretty good experience. I think because of the stowaway to Paris France recently they are being extra diligent about boarding passes at the gate. But they boarded the back of the plane first, and that's something I really think needs to start in the USA.

Didn't like on this return inbound flights (from Hong Kong to Vancouver) Outbound to the Hong Kong was good.

Airline itself is great. While food was being taken off of my tray my beer spilled which was a total accident and I wasn’t upset about that, what was frustrating was I had to ask for towels to clean up and wipe my leg. It would have been left as is if I hadn’t.

Bars and restaurants in Taipei close early. The lounge isn’t very good, but better than the public areas.

Everything you need to know for your flight from Bangkok to Ontario

Information on your arrival and departure airports

Bangkok (BKK)
Ontario (ONT)

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