BKK - ONT

$522 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 5/26. 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, 0 bags

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
$892
Typical prices: $895-$842
China Airlines
Thu 5/14Tue 11/10
BKK - ONT • 1 stop
Cheapest one-way
$522
Typical prices: $520-$548
STARLUX Airlines
Tue 5/26
BKK - ONT • 1 stop
Top airlines
Cheapest • from $892 (round-trip)
Best reviews • 8.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Bangkok and Ontario. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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

Thu, May 14 - Tue, Nov 10
China Airlines Logo
10:50 am - 6:00 pm
BKK
-
ONT
21h 10m
1 stop
China Airlines Logo
10:50 pm - 4:45 pm
ONT
-
BKK
26h 55m
1 stop
$892China Airlines
Tue, Sep 1 - Sat, Sep 5
STARLUX Airlines Logo
5:50 pm - 5:05 pm
BKK
-
ONT
37h 15m
1 stop
STARLUX Airlines Logo
11:10 pm - 12:00 pm
ONT
-
BKK
22h 50m
1 stop
$893STARLUX Airlines
Thu, May 7 - Wed, Aug 26
China Airlines Logo
10:50 am - 6:00 pm
BKK
-
ONT
21h 10m
1 stop
China Airlines Logo
12:45 am - 12:10 pm
ONT
-
BKK
21h 25m
1 stop
$894China Airlines
Fri, May 8 - Mon, May 11
STARLUX Airlines Logo
1:10 pm - 5:05 pm
BKK
-
ONT
17h 55m
1 stop
STARLUX Airlines Logo
11:10 pm - 12:00 pm
ONT
-
BKK
22h 50m
1 stop
$895STARLUX Airlines
Wed, Sep 9 - Fri, Sep 18
China Airlines Logo
1:20 pm - 6:40 pm
BKK
-
ONT
19h 20m
1 stop
China Airlines Logo
12:10 am - 9:45 am
ONT
-
BKK
19h 35m
1 stop
$904China Airlines
Thu, May 7 - Thu, Aug 27
China Airlines Logo
10:50 am - 6:00 pm
BKK
-
ONT
21h 10m
1 stop
China Airlines Logo
12:45 am - 12:10 pm
ONT
-
BKK
21h 25m
1 stop
$905China Airlines
Tue, Sep 8 - Sat, Sep 19
China Airlines Logo
1:20 pm - 6:40 pm
BKK
-
ONT
19h 20m
1 stop
China Airlines Logo
12:10 am - 9:45 am
ONT
-
BKK
19h 35m
1 stop
$906China Airlines
Thu, Sep 10 - Fri, Sep 18
STARLUX Airlines Logo
5:50 pm - 5:05 pm
BKK
-
ONT
37h 15m
1 stop
STARLUX Airlines Logo
11:10 pm - 4:40 pm
ONT
-
BKK
27h 30m
1 stop
$908STARLUX Airlines
Thu, Sep 10 - Sun, Sep 13
United Airlines Logo
9:35 am - 10:58 pm
BKK
-
ONT
27h 23m
2 stops
United Airlines Logo
1:44 pm - 4:35 am
ONT
-
BKK
48h 51m
2 stops
$912United Airlines
Wed, Sep 9 - Sat, Sep 12
China Airlines Logo
5:30 pm - 6:40 pm
BKK
-
ONT
39h 10m
1 stop
China Airlines Logo
12:45 am - 9:45 am
ONT
-
BKK
19h 00m
1 stop
$915China Airlines
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 May.

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 $592 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $1,052 and $1,008 respectively.

Good to know

Low seasonFebruary
Cheapest flight$522
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 10% 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 $522 for a one-way ticket and $892 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 $850 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 $886 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 297 reviews
8.6Food
9.0Boarding
8.9Comfort
9.2Crew
8.8Entertainment
Airline reviews

FLEW IN BUSINESS CLASS OVER NIGHT FLIGHT AIRLINE BOOKED A PARENT AND ONE YEAR OLD KID PARENT ALLOWED THE KID TO DISTURB EVERYONES SLEEP A terrible flight that was expensive I have 10 grand children I love kids But to be disturbed on a over night flight is in not what I paid for I hold the air line responsible Respectfully, Al Eaddy

2.0 MediocreAlbert, Apr 2026
BKK - TPE
Read more STARLUX Airlines reviews

FLEW IN BUSINESS CLASS OVER NIGHT FLIGHT AIRLINE BOOKED A PARENT AND ONE YEAR OLD KID PARENT ALLOWED THE KID TO DISTURB EVERYONES SLEEP A terrible flight that was expensive I have 10 grand children I love kids But to be disturbed on a over night flight is in not what I paid for I hold the air line responsible Respectfully, Al Eaddy

I liked everything but I flew business class and StarLux booked another passenger and a one year old , in business class The child cried 80 percent of the flight, the flight was a long 13 hour flight. I’m 75 and I have 10 grand children, I love kids But with that said it still made it not and enjoyable flight. Ask your great flight attendance what they think of the situation, they had to deal with. Let me know what they said Respectfully, Al Eaddy

Everything is smooth. Very good. Except flight arrived SFO 30min late.

more new movies and the blockbuster movies that everyone likes

Great airline. Kind staff, before m, during, and after the flight. They Directed you the whole way. Even when I arrived at my transfer destination, flight attendants guided passengers on which direction to go. I would definitely fly STARLUX again.

Got dinner and breakfast! They had mahjong game in entertainment system. Current movies. Loved the slippers, sleeping mask packet. Great experience for a long flight

Excellent. Airline was very clean, staff was excellent, very professional. Economy seats were still large and comfortable. Meals were included and with good options. We were given a blanket and pillow as well as a comfort kit including an eye mask, ear plugs, and tooth brush. Would highly recommend.

Business Class is exceptional, from the lie flat seats to the wide range of food on board. Can’t wait for our next journey with Starlux!

Th tray was dirty when pulled it out. Still oily and food stains can clearly see last trip cleaner did not clean well. The toilet sink water did not drain quickly enough.

Majority of the movie entertainment loaded in the aircraft were quite old.

We really enjoyed our flight to Seattle. The food was great and service was attentive.

Everything was fine except the seats were quite compressed and hard for the 12 hour flight

The crew are amazing. Very professional, polite, kind, and accommodating.

The crew was very professional and friendly. Although there was a water leak from panel above, the crew was trying to mitigate the consequence. We are happy with its service and the value offered. We will definitely take China Airlines again.

Well, we upgraded and on a 14 hour flight not sure how we would tolerate it otherwise. The upgrades are ridiculously expensive and even with empty seats even in first class it was difficult to upgrade. Probably won’t fly China Air again due to this. The attendants tho were much better than the airlines in the states and there attentiveness and care for your comfort far exceeds other airlines in the states.

Very bad. They don’t allow group people to sit together by blocking most of seats and opening only single seat during online checking in. . By doing so, they can rip off customers at the check-in counter by collecting extra money if we want to sit together in the same row.

Hour late but understandable under the conditions. Taoyuan airport could have clearer signs language wise and more staff to help direct people.

Delayed. Not a full flight and whole rows left open with the paid seating. Food was ok. My beef meal only had one cube of beef the rest carrot cubes. Entertainment on personal device but didn’t know about it until the flight was almost done.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

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

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

Information on your arrival and departure airports