Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

ONT - SIN

$592 Find cheap flights from Ontario to Singapore

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 Singapore departing on 8/21. 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
Tue 6/4
Tue 6/11

Search hundreds of travel sites at once for deals on flights to Singapore

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Singapore, 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 Singapore, as well as popular online travel agencies
In the last 7 days travelers have searched 43,369,418 times on KAYAK, and here is why:

Save 22% 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 Singapore (ONT-SIN)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Singapore 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
12:45 am - 12:40 amONT-SIN
32h 55m1 stop
1:35 pm - 6:40 pmSIN-ONT
20h 05m1 stop
$988China Airlines
Find Deal
Wed, Aug 21 - Thu, Sep 5
12:45 am - 12:40 amONT-SIN
32h 55m1 stop
2:00 am - 6:40 pmSIN-ONT
31h 40m1 stop
$1,024China Airlines
Find Deal
Fri, Aug 23 - Tue, Sep 10
7:00 am - 11:40 pmONT-SIN
25h 40m2 stops
10:50 am - 6:03 pmSIN-ONT
22h 13m2 stops
$1,127Korean Air
Find Deal
Thu, Aug 22 - Mon, Sep 16
6:00 am - 12:20 amONT-SIN
27h 20m2 stops
8:05 am - 3:33 pmSIN-ONT
22h 28m2 stops
$1,184Japan Airlines
Find Deal
Wed, Sep 11 - Tue, Sep 24
2:50 pm - 6:15 amONT-SIN
48h 25m2 stops
9:50 pm - 11:56 pmSIN-ONT
41h 06m2 stops
$1,207American Airlines
Find Deal
Sat, May 18 - Wed, May 22
6:00 am - 6:45 pmONT-SIN
21h 45m1 stop
9:00 pm - 12:33 pmSIN-ONT
30h 33m2 stops
$1,274United Airlines
Find Deal
Mon, May 20 - Fri, May 24
7:00 am - 11:40 pmONT-SIN
25h 40m2 stops
10:50 am - 6:03 pmSIN-ONT
22h 13m2 stops
$1,277Korean Air
Find Deal
Wed, Aug 28 - Thu, Sep 12
6:00 am - 6:45 pmONT-SIN
21h 45m1 stop
8:45 am - 12:45 pmSIN-ONT
19h 00m1 stop
$1,278United Airlines
Find Deal
Wed, May 22 - Thu, May 30
6:00 am - 12:20 amONT-SIN
27h 20m2 stops
8:05 am - 6:57 pmSIN-ONT
25h 52m2 stops
$1,793American Airlines
Find Deal
Tue, Jun 25 - Tue, Jul 2
6:00 am - 12:20 amONT-SIN
27h 20m2 stops
8:05 am - 3:29 pmSIN-ONT
22h 24m2 stops
$1,983Japan Airlines
Find Deal
Wed, Jul 10 - Wed, Jul 31

Flights from Ontario to Singapore - Travel Insights & Trends

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

What is the cheapest month to fly from Ontario to Singapore?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Singapore, 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 Singapore is October, where tickets cost $1,033 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $1,665 and $1,481 respectively.

How far in advance should I book a flight from Ontario to Singapore?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Singapore, 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 Singapore, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 65 days before departure.

Which airlines provide the cheapest flights from Ontario to Singapore?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on China Airlines ($592) and Korean Air ($600). The cheapest round-trip tickets were found on China Airlines ($988) and Korean Air ($1,127).

Good to know

Low season

July

High season

May

Cheapest flight

$592
Best time to beat the crowds but there is an average 33% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from Ontario to Singapore

When to book flights from Ontario to Singapore

Are your dates flexible? Find out the best times to travel from Ontario to Singapore 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 flights from Ontario to Singapore

  • What is the cheapest flight from Ontario to Singapore?

    In the last 3 days, the lowest price for a flight from Ontario to Singapore was $592 for a one-way ticket and $988 for a round-trip.

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

    A passport is required to fly from Ontario to Singapore.

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

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

  • Which airline alliances offer flights from Ontario to Singapore?

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

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

    The two airlines most popular with KAYAK users for flights from Ontario to Singapore are China Airlines and United Airlines. With an average price for the route of $1,253 and an overall rating of 8.2, China Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,492 and an overall rating of 7.4.

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

    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 Singapore.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Singapore 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 Singapore?

    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 Singapore with an airline and back to Ontario with another airline. Booking your flights between Ontario and SIN 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 Singapore?

    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 Singapore 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 airlines flying from Ontario to Singapore

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Singapore. 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 Singapore? 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.
8.2
China AirlinesOverall score based on 941 reviews
8.3Boarding
7.8Food
8.6Crew
8.0Comfort
8.1Entertainment
Airline reviews

Very good , the weather was terrible, but i admired the professionality and politeness and care from the crew, and the excellent contition of the plane

10.0 Excellentfr Jonah, Apr 2024HKG - TPE
Read more about China Airlines reviews

Very good , the weather was terrible, but i admired the professionality and politeness and care from the crew, and the excellent contition of the plane

Comfort was left wanting due to such a long flight, made the wife and I wish we could upgrade the seats to Business class or First Class, but did not have that option. Food was good but had very limited options and I have a dietary restriction which was difficult for the staff to accommodate since everything provided came with cheese on it. (Cheese could potentially kill me) Did not have an option to inform the staff until we were already in the air about the restriction and was not provided another option before flight departed.

Liked that I could pick my seat and have a special meal without an extra charge. Luggage is reasonable for overseas trip. What could have been better is boarding and leaving on time.

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!

Great flight, although I flew out of ONT and that is where my car is, lol

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.

3 of the 4 flights had delays despite the weather being fine, but still managed to make all connections

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

Baggage made it successfully to destination despite short layover. Appreciate that.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Hated every minute of it. This flight should have only taken 1.5hrs but was delayed over 10hours. Now I am being told I cannot be compensated or refunded my ticket price or extra leg room, which I purchased but did not receive, because the airline is throwing the blame on the 3rd party I purchased tickets through and 3rd party putting the blame on airline. No one wants to help. They received their money and that's all they care about. Im going on 3 days of still trying to get to my final destination, had to cancel car rental, car insurance and hotel. Currently staying in airport until hotels open up. Thank you Lufthansa, Kayak, Underpricer and United for making this trip the worst ever.

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

Packed in like sardines, very uncomfortable. Sitting the aisle my shoulder was rammed into numerous times by rushing flight attendants. Also flight was very cold.

the head jack on my seat didn't work and the power outlet didn't work for my seat

Book cheap flights from Ontario to Singapore

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Singapore found on KAYAK in the last 72 hours.
8/21Wed
1 stopChina Airlines
20h 50mONT-SIN
$592
8/22Thu
2 stopsKorean Air
31h 00mONT-SIN
$600
8/25Sun
2 stops
25h 40mONT-SIN
$637
8/25Sun
3 stops
28h 15mONT-SIN
$663
9/1Sun
2 stopsAmerican Airlines
33h 05mONT-SIN
$724
7/15Mon
2 stopsAmerican Airlines
39h 16mONT-SIN
$730
9/1Sun
1 stopUnited Airlines
28h 26mONT-SIN
$828
5/11Sat
1 stopUnited Airlines
21h 45mONT-SIN
$831
8/23Fri
2 stopsJapan Airlines
27h 20mONT-SIN
$840
5/29Wed
2 stopsJapan Airlines
33h 15mONT-SIN
$856

Search by stops

Search by airline

Search by price

Last minute flights from Ontario to Singapore

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 Singapore that are departing in the next 10 days.
5/8Wed
multi-stopUnited Airlines
21h 45mONT-SIN
5/19Sun
multi-stopUnited Airlines
28h 01mSIN-ONT
$1,331
5/8Wed
multi-stopUnited Airlines
34h 30mONT-SIN
5/19Sun
multi-stopUnited Airlines
30h 40mSIN-ONT
$1,336
5/7Tue
multi-stopChina Airlines
33h 30mONT-SIN
5/19Sun
multi-stopChina Airlines
19h 30mSIN-ONT
$1,597
5/7Tue
multi-stopChina Airlines
33h 30mONT-SIN
5/19Sun
multi-stopChina Airlines
19h 30mSIN-ONT
$1,631
5/7Tue
multi-stopChina Airlines
21h 25mONT-SIN
5/14Tue
multi-stopChina Airlines
19h 30mSIN-ONT
$1,665
5/8Wed
multi-stopChina Airlines
21h 25mONT-SIN
5/12Sun
multi-stopChina Airlines
31h 05mSIN-ONT
$1,673
5/8Wed
multi-stopQatar Airways
42h 45mONT-SIN
5/18Sat
multi-stopQatar Airways
32h 53mSIN-ONT
$1,980
5/6Mon
multi-stopJapan Airlines
27h 20mONT-SIN
5/15Wed
multi-stopJapan Airlines
23h 00mSIN-ONT
$2,041
5/7Tue
multi-stop
21h 25mONT-SIN
5/19Sun
multi-stop
22h 25mSIN-ONT
$2,065
5/7Tue
multi-stop
21h 25mONT-SIN
5/19Sun
multi-stop
22h 25mSIN-ONT
$2,112

Search by stops

Search by airline

Search by price

Ontario - Singapore Flights

Departure:

Ontario (ONT)United States

Destination:

Singapore (SIN)Singapore

Return flight deals:

Singapore - Ontario

Cabin classes:

Browse destinations: