BKK - ONT

$431 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 11/12. 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.
1 adult
1 adult, Economy

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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Everything you should know

Cheapest round-trip
$704
Typical prices: $994-$1,121
China Airlines
Fri 11/21Fri 11/28
BKK - ONT • 1 stop
Cheapest one-way
$431
Typical prices: $522-$603
Multiple Airlines
Wed 11/12
BKK - ONT • 3 stops
Top airlines
China Airlines
Cheapest • from $704 (round-trip)
STARLUX Airlines
Best reviews • 8.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
August
Cheapest • 15% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight 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

Fri, Nov 21 - Fri, Nov 28
China Airlines Logo
10:55 am - 4:50 pmBKK-ONT
20h 55m1 stop
China Airlines Logo
10:50 pm - 4:45 pmONT-BKK
26h 55m1 stop
$704China Airlines
Find Deal
Thu, Nov 13 - Fri, Nov 28
China Airlines Logo
10:55 am - 4:50 pmBKK-ONT
20h 55m1 stop
China Airlines Logo
10:50 pm - 1:05 pmONT-BKK
23h 15m1 stop
$706China Airlines
Find Deal
Sat, Nov 15 - Sat, Nov 29
China Airlines Logo
2:35 am - 4:50 pmBKK-ONT
29h 15m1 stop
China Airlines Logo
10:50 pm - 9:50 amONT-BKK
20h 00m1 stop
$707China Airlines
Find Deal
Thu, Nov 13 - Fri, Nov 28
China Airlines Logo
10:55 am - 4:50 pmBKK-ONT
20h 55m1 stop
China Airlines Logo
10:50 pm - 1:05 pmONT-BKK
23h 15m1 stop
$711China Airlines
Find Deal
Thu, Nov 13 - Wed, Jan 7
STARLUX Airlines Logo
5:40 pm - 4:30 pmBKK-ONT
37h 50m1 stop
STARLUX Airlines Logo
9:45 pm - 4:30 pmONT-BKK
27h 45m1 stop
$746STARLUX Airlines
Find Deal
Thu, Nov 13 - Fri, Nov 28
STARLUX Airlines Logo
5:40 pm - 4:30 pmBKK-ONT
37h 50m1 stop
STARLUX Airlines Logo
9:45 pm - 12:35 pmONT-BKK
23h 50m1 stop
$747STARLUX Airlines
Find Deal
Sun, Dec 7 - Tue, Jan 6
Multiple Airlines Logo
1:20 pm - 11:29 pmBKK-ONT
25h 09m2 stops
Multiple Airlines Logo
4:36 pm - 12:00 pmONT-BKK
28h 24m2 stops
$844Multiple Airlines
Find Deal
Thu, Nov 13 - Wed, Jan 7
Multiple Airlines Logo
11:50 pm - 11:32 pmBKK-ONT
38h 42m2 stops
Multiple Airlines Logo
11:53 am - 5:50 pmONT-BKK
38h 57m2 stops
$854Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
United Airlines Logo
7:10 am - 8:44 pmBKK-ONT
27h 34m2 stops
United Airlines Logo
6:00 am - 11:25 amONT-BKK
38h 25m2 stops
$902United Airlines
Find Deal
Thu, Dec 11 - Tue, Jan 20
United Airlines Logo
4:55 pm - 12:17 pmBKK-ONT
34h 22m2 stops
United Airlines Logo
6:32 pm - 5:10 amONT-BKK
43h 38m2 stops
$911United Airlines
Find Deal
Booking Insights

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.

How much is a round-trip flight from Bangkok Suvarnabhumi Airport to Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Bangkok Suvarnabhumi Airport to Ontario departing in November.

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 August, where tickets cost $799 (return) on average. On the other hand, the most expensive months are November and July, where the average cost of round-trip tickets is $1,057 and $1,054 respectively.

Good to know

Low seasonNovember
Cheapest flight$431
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 12% increase in price.
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 $431 for a one-way ticket and $704 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 is the only airline alliance operating flights between Bangkok and Ontario.

  • Which is the best airline for flights from Bangkok to Ontario, STARLUX Airlines or China Airlines?

    The two airlines most popular with KAYAK users for flights from Bangkok to Ontario are STARLUX Airlines and China Airlines. With an average price for the route of $911 and an overall rating of 8.9, STARLUX Airlines is the most popular choice. China Airlines is also a great choice for the route, with an average price of $995 and an overall rating of 8.3.

  • 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.

Reviews of the top airlines 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.
8.9
STARLUX AirlinesOverall score based on 219 reviews
8.9Comfort
8.9Boarding
9.2Crew
8.8Entertainment
8.7Food
Airline reviews

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

10.0 ExcellentBrian, Oct 2025SIN - TPE
Read more STARLUX Airlines reviews

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

Flight cancelled due to inclement weather yet rival airline EVA Air with the same route departed 2 hours later and landed safely while our flight was cancelled and rescheduled for 36 hours later.

The staff in air and on land went above and beyond! I would definately recommend and we will fly Starlux again!

I need Starlux to respond to my complaint and issues for my flight.

Someon vomit during boarding. My seat was next to the vomit. I asked crew member to switch seat, but they said it was a full flight. I had my baby with me. My baby got sick after the flight. He was in the hospital for 2 days.

The airplane so clean and they have a nice crew

it they come out with resent movie and good food

The crew could have been kinder and less pushy. The premium economy seats don't have enough cushion. The seats are to hard and the flight became painful and uncomfortable after an hour of flying.

Aircraft is new and toilets are spacious, but toilets are quite filthy. They should clean more often. They have a long list of drink offer but are actually not available during meal. They said they’ll come back with them and you don’t get them until after dinner which means you eat your meals without any drinks if you were to get something that they don’t have on the cart. They are strict about removing headphones during take off and landing which is new to us since the movies did not get turned off. Instead, we we’re forced to watch their commercials during that time. We probably would fly with them again but not with the cost we spent. For the record, I work in tourism and travel a lot for inspections.

Our transit in Taipei was disappointing. The ground crew could not tell us where the lounge was located, so we wasted 15 minutes trying to find it. The airline has a great review, but our experience says otherwise.

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

I love my Delta crew, they were so welcoming and helpful.

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

Sat next to a woman who had her period. Blood was on her seat and on the arm rest between us. I ended up having period blood on my jacket and shoes. Very gross!

Better organization of boarding procedures. Terrible leadership guiding people to gates.

Been flying with China Airline over years many times. Good experience with them, no issues.

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

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…

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

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