Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

ONT - BKK

$443 Find cheap flights from Ontario to Bangkok Suvarnabhumi Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Bangkok departing on 7/23. 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.
1 adult
0 bags
sáb. 6/29
sáb. 7/6

Search hundreds of travel sites at once for deals on flights to Bangkok Suvarnabhumi Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Bangkok, 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 Ontario to Bangkok, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Ontario to Bangkok (ONT-BKK)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Bangkok 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 and deals for you by selecting your travel dates.
Choose your dates
6:20 am - 11:55 pmONT-BKK
27h 35m2 stops
7:00 am - 12:45 amBKK-ONT
31h 45m2 stops
$972United Airlines
Find Deal
jue., ago. 1 - sáb., ago. 31
12:45 am - 9:45 amONT-BKK
19h 00m1 stop
1:20 pm - 6:40 pmBKK-ONT
19h 20m1 stop
$982China Airlines
Find Deal
dom., ago. 18 - mar., ago. 27
12:45 am - 12:10 pmONT-BKK
21h 25m1 stop
5:30 pm - 6:05 pmBKK-ONT
38h 35m1 stop
$986China Airlines
Find Deal
lun., ago. 12 - dom., sep. 15
10:00 am - 3:30 pmONT-BKK
39h 30m2 stops
2:40 am - 6:40 pmBKK-ONT
30h 00m1 stop
$1,081
Find Deal
mar., ago. 13 - sáb., sep. 14
6:53 am - 9:45 pmONT-BKK
24h 52m2 stops
12:35 am - 10:29 pmBKK-ONT
35h 54m2 stops
$1,083Korean Air
Find Deal
jue., ago. 22 - sáb., sep. 14
6:00 am - 4:35 amONT-BKK
32h 35m2 stops
5:30 pm - 6:40 pmBKK-ONT
39h 10m1 stop
$1,090
Find Deal
mié., ago. 21 - jue., ago. 29
6:53 am - 11:35 pmONT-BKK
26h 42m2 stops
9:50 am - 10:42 pmBKK-ONT
26h 52m2 stops
$1,112Korean Air
Find Deal
dom., ago. 25 - sáb., sep. 7
10:00 am - 12:45 pmONT-BKK
36h 45m2 stops
2:30 am - 10:20 pmBKK-ONT
33h 50m2 stops
$1,412Qatar Airways
Find Deal
lun., ago. 19 - mar., sep. 24
6:59 pm - 11:35 pmONT-BKK
38h 36m2 stops
9:40 pm - 10:42 pmBKK-ONT
39h 02m2 stops
$1,416Delta
Find Deal
lun., jul. 22 - lun., ago. 5
6:00 am - 7:05 amONT-BKK
35h 05m2 stops
2:30 am - 11:59 pmBKK-ONT
35h 29m2 stops
$1,562Qatar Airways
Find Deal
lun., ago. 26 - dom., sep. 8

Flights from Ontario to Bangkok - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to Bangkok 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 Ontario to Bangkok Suvarnabhumi Airport?

The average price of all flights from Ontario to Bangkok Suvarnabhumi Airport clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Ontario to Bangkok Suvarnabhumi Airport, look for departures on Wednesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Bangkok Suvarnabhumi Airport, Tuesday is the cheapest day to fly and Saturday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Bangkok Suvarnabhumi Airport, 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 Ontario to Bangkok Suvarnabhumi Airport is September, where tickets cost $892 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $1,514 and $1,437 respectively.

How far in advance should I book a flight from Ontario to Bangkok Suvarnabhumi Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Bangkok Suvarnabhumi Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Ontario to Bangkok Suvarnabhumi Airport, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 77 days before departure.

Which airlines provide the cheapest flights from Ontario to Bangkok Suvarnabhumi Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Ontario to Bangkok Suvarnabhumi Airport were found on United Airlines ($972) and China Airlines ($982). Delta proposed the cheapest one-way flight at $443.

Good to know

Low season

May

High season

November

Cheapest flight

$443
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Ontario to Bangkok Suvarnabhumi Airport

When to book flights from Ontario to Bangkok

Are your dates flexible? Find out the best times to travel from Ontario to Bangkok 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 Ontario to Bangkok Suvarnabhumi Airport flights

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

    In the last 3 days, the lowest price for a flight from Ontario to Bangkok Suvarnabhumi Airport was $443 for a one-way ticket and $972 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Ontario and on arrival in Bangkok Suvarnabhumi Airport.

  • Which airports will I be using when flying from Ontario to Bangkok Suvarnabhumi Airport?

    Ontario airport is called Ontario and the only airport in Bangkok Suvarnabhumi Airport is Bangkok Suvarnabhumi.

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

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

  • Which airline alliances offer flights from Ontario to Bangkok Suvarnabhumi Airport?

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

  • What is the most popular layover when flying to Bangkok Suvarnabhumi Airport from Ontario?

    Taipei City is the most popular layover city among KAYAK users traveling from Ontario to Bangkok Suvarnabhumi Airport.

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

    The two airlines most popular with KAYAK users for flights from Ontario to Bangkok are China Airlines and Delta. With an average price for the route of $1,004 and an overall rating of 8.2, China Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $1,101 and an overall rating of 8.0.

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

    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 Ontario to Bangkok Suvarnabhumi Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok Suvarnabhumi Airport from Ontario 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 Ontario to Bangkok Suvarnabhumi Airport?

    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 Bangkok Suvarnabhumi Airport with an airline and back to Ontario with another airline. Booking your flights between Ontario and BKK 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 Ontario to Bangkok Suvarnabhumi Airport?

    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 Bangkok Suvarnabhumi Airport from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Ontario to Bangkok

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Bangkok. 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 Ontario to Bangkok? 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.
9.1
STARLUX AirlinesOverall score based on 105 reviews
9.1Entertainment
9.1Boarding
9.3Crew
9.0Food
9.2Comfort
Airline reviews

An excellent experience. The aircraft, crew, services, and amenities were all top notch for an economy class ticket. It has been quite a while since I've had this level of service on an airline.

10.0 ExcellentDavid, Apr 2024KUL - TPE
Read more about STARLUX Airlines reviews

An excellent experience. The aircraft, crew, services, and amenities were all top notch for an economy class ticket. It has been quite a while since I've had this level of service on an airline.

Everything about this airline I like! Will definitely choose Starlux over any other airlines out there when it is available!

My husband and I like this airlines , lt looks new ,clean & good service. Then we will fly with STARLUX again. And I love their time , it is perfect for my family. See you soon.

Great experience! Food, staff, Entertainment Center, leg room was great!

Very new plane with premium economy seats reclining to 45 degrees, more than most other competitors. Staff service was excellent and friendly.

The plane is very clean. The selection of movies is excellent!

Starlux has now won me over from all other airline for Asia. They are friendly and very serviced focus with us passengers.

Great ! The services of crew members were excellent. The pilot did landing smoothly.

First time on Starlux. I was impressed. Very eager to assist flight crew

Premium Economy on Starlux- a worthwhile way to cross the Pacific. This is a great premium economy experience. The seats are comfortable, wide and provide decent foot rests. The seatback TV is large, high resolution and plenty of content. Bluetooth connection for your headset and control from your phone is available. Food was decent and in line with the cabin class. The seat could be improved by providing more lower leg support especially for taller guests (6ft myself). Cabin crew will be moving up and down the aisle a lot since the galley is in front.

Their announcement was not quite clear in Chinese. The rest is pretty good.

The hygiene of the bathrooms were terrible. Urine smells leaked out into the cabin and the seats were really tight, even for a petite woman like myself. Flight attendants did not go through the cabin enough to offer refreshments.

Fast and efficient boarding. Flight was on time. Service was very good for our long flight. First time flying with this airline and I would highly recommend.

Eva Air's Business Class is pretty decent. With the given price, I think that the food can be better.

Pleasant, comfortable, and entertaining. All told, ZERO issues with it. And sadly, so far the flight was WAY more comfortable than the hellhole that is "Lambug Beach Resort" at Badian Beach!

It was a pleasant fly with Eva Air from NYC to Taipei. The crew were friendly and the food was exceeded my expectation.

Eva air is a good airline. The seats on the way to Taipei could have certainly been more comfortable, but all in all it was a pretty good experience.

Boarding is fast and easy for economy class, food was ok baggage policies are good

Overall the flight was what might be expected for a long haul flight to Asia in economy class. The cabin crew was attentive and the food was good. Boarding was fairly fast and easy. The one thing I found frustrating was the EVA app. It is terrible. Trying to do anything on it was almost impossible.

EVA would not help with ticket issue since they were purchased through a travel agency. Even though it was EVA ticket stock. Travel agency Budget Air didn't reissue ticket after airline change which I didn’t learn until trying to checkin on Christmas Day and there was no contact number for the agency to help. I will never use Budget Air to purchase flight again and disappointed in EVA’s refusal to help. Thankfully just under 12 hrs before departure someone from the agency was available to reissue tickets. I was starting to think we would not be flying and the stress trying to resolve was completely unacceptable.

Asian Vegitarian food was test less No Salt or pepper served Need to improve with Chef who can caters for Peaple from India I am sure Chef knows different varieties of food Indian People like

Flight attendants rude, they disappear for almost 3 hours not doing rounds to see what people needed. The laboratories were full of empty water cups, because they never come back to collect them.

The flight attendant, where kind of rude, there where hiding for almost 3 hours, without doing rounds to see if people needed water or pickup the water cups, the toilets were full of water cups, because they never come back to pick them up.

Flew on an Airbus 350-900. Excellent aircraft properly cleaned and serviced. Flight crew was excellent plane departed and arrived on time. The A350 has excellent air circulation far better than the 777. I would recommend Asiana to anyone looking to fly in a clean comfortable environment. This is my second round trip flight from New York to Bangkok via Asiana and I will book Asiana again!

Amazing service and fabulous syaff. Loved the jumbo jet too, comfortable.

The entertainment screens are dated and needs to be changed to new screens. Then when we got home, I found out 2 of our luggage’s were damaged (huge) and some items stolen.

I could not choose my seat prior to check in

JetBlue's check-in was great, but there was an in-flight attendant who was very rude and unkind. I didn't realize that the bathrooms were already locked 30 mins prior to landing and needed to use the restroom. Instead of politely asking me to return, she rudely told me, 'NO, bathrooms are locked! Go back to your seat!' The JetBlue flight was more than an hour delay, which made me almost miss my connecting flight with Asiana. I understand the reasoning, but the action they took to get a hold of maintenance was time consuming. It took them more than 30 mins to get a hold of maintenance and for maintenance to get started. The Asiana flight and crew were wonderful, in general. They waited for us who were delayed from the previous flight before they took off and were very kind to take my checked baggage's info. Seats were a little uncomfortable for such long flight, but service and flight attendants were great! However, my 3 checked baggages are missing! They're lost somewhere in the transition. I'm writing this review 3 days after my arrival to the Philippines, and my 3 checked baggages, where my wedding dress is, are all still missing! I and the CEB airport crew have sent multiple emails to both JetBlue and Asiana, and neither has responded to any of our emails. Although, I was able to get in contact with JetBlue's Interline Department who confirmed that the bags were turned over to Asiana without confirmation details.

The full flat bed was not that comfortable, hard and lumpy., too much space wasted with those bulky walls and divisions instead of making the bed 3-4 inches wider. The compartment where you put your feet is like a shoebox, poor design. Toilets of A350 are just too small, sink is too small

Aside from a LOT of turbulence the flight was perfect! The flight crew was superb and the food was delicious!

My flight to Los Angeles was canceled Had to book another flight and you charged me extra $500 Very bad experience

They were helpful, considerate with asking us for standby preboarding with our infant, gave us toys and excellent service onboard. They were always on time, even early boarding once! All our luggage arrived intact, and they even brought our baby car seat to oversized for us. We love China Airlines!

Staff is friendly, great variety of entertainment, check in a little messy but due to people not listening. Overall a pleasant experience. Would use again in the future.

It felt like a new plane. Decent leg room in economy, food was fine, and the plane didn’t feel super dry and uncomfortable.

Free Wi-Fi could have been better in the Airport.

Ask flight attendant for water during flight and she was a little rude get the water.

Staff were good and nice. There should me 3 meals instead of only 2 and snacks.

Excellent staff made the boarding process fast and easy. Friendly crews on both flights from Saigon to Taipei and Taipei to Los Angeles. Will fly China Airlines again.

For a long-haul flight, the crew did a very good job of keeping the lavatories clean and the aisles clear.

The plane was an older model and the entertainment was hard to enjoy on those small screens. I struggled to see clear anything I wanted to watch. The seats where a bit uncomfortable but for a 3 hours flight it was pretty ok. The rest of services were excellent. Highly recommend China Airlines to others.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

Book cheap flights from Ontario to Bangkok

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Bangkok found on KAYAK in the last 72 hours.
7/23mar.
2 stopsDelta
26h 35mONT-BKK
$443
8/12lun.
2 stopsKorean Air
24h 52mONT-BKK
$445
7/9mar.
2 stopsJapan Airlines
27h 00mONT-BKK
$479
7/8lun.
2 stops
40h 36mONT-BKK
$492
8/1jue.
2 stopsUnited Airlines
27h 35mONT-BKK
$497
7/16mar.
2 stops
39h 30mONT-BKK
$507
8/11dom.
2 stopsUnited Airlines
39h 30mONT-BKK
$509
8/23vie.
1 stopChina Airlines
19h 00mONT-BKK
$514
8/15jue.
1 stopChina Airlines
19h 00mONT-BKK
$519
8/5lun.
2 stopsJapan Airlines
27h 00mONT-BKK
$876

Search by stops

Search by airline

Search by price

Last minute flights from Ontario to Bangkok

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ontario to Bangkok that are departing in the next 10 days.
6/3lun.
multi-stopUnited Airlines
27h 35mONT-BKK
6/13jue.
multi-stopUnited Airlines
29h 27mBKK-ONT
$1,539
6/1sáb.
multi-stopQatar Airways
30h 10mONT-BKK
7/11jue.
multi-stopQatar Airways
37h 25mBKK-ONT
$1,610
6/4mar.
multi-stop
35h 05mONT-BKK
6/20jue.
multi-stop
40h 24mBKK-ONT
$1,656
6/4mar.
multi-stop
34h 50mONT-BKK
6/20jue.
multi-stop
21h 05mBKK-ONT
$1,701
6/3lun.
multi-stopChina Airlines
19h 35mONT-BKK
6/20jue.
multi-stopChina Airlines
21h 05mBKK-ONT
$2,107
5/31vie.
multi-stopChina Airlines
26h 10mONT-BKK
6/20jue.
multi-stopChina Airlines
18h 45mBKK-ONT
$2,166
5/31vie.
multi-stopKorean Air
24h 55mONT-BKK
6/3lun.
multi-stopKorean Air
22h 11mBKK-ONT
$2,808
6/3lun.
multi-stopKorean Air
24h 55mONT-BKK
6/19mié.
multi-stopKorean Air
22h 00mBKK-ONT
$2,825
6/2dom.
multi-stopDelta
37h 03mONT-BKK
6/12mié.
multi-stopDelta
37h 08mBKK-ONT
$3,557
6/3lun.
multi-stopDelta
24h 55mONT-BKK
6/13jue.
multi-stopDelta
26h 48mBKK-ONT
$3,735

Search by stops

Search by airline

Search by price

Ontario - Bangkok Suvarnabhumi Airport Flights

Departure:

Ontario (ONT)United States

Destination:

Bangkok Suvarnabhumi Airport (BKK)Thailand

Return flight deals:

Bangkok Suvarnabhumi Airport - Ontario

Cabin classes: