$437 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 4/22. 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

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Flight Deals

Book Cheap Ontario to Singapore Plane Tickets

 
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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Singapore

Thu, Aug 20 - Sun, Sep 6
Delta Logo
7:00 am - 11:55 pm
ONT
-
SIN
25h 55m
2 stops
Delta Logo
10:00 pm - 10:40 pm
SIN
-
ONT
39h 40m
2 stops
$885Delta
Thu, Sep 10 - Mon, Sep 14
Korean Air Logo
7:00 am - 11:55 pm
ONT
-
SIN
25h 55m
2 stops
Korean Air Logo
7:30 am - 5:16 pm
SIN
-
ONT
24h 46m
2 stops
$890Korean Air
Wed, Apr 29 - Wed, May 13
Korean Air Logo
7:00 am - 11:55 pm
ONT
-
SIN
25h 55m
2 stops
Korean Air Logo
7:30 am - 5:10 pm
SIN
-
ONT
24h 40m
2 stops
$891Korean Air
Fri, Sep 4 - Wed, Sep 30
Delta Logo
7:00 am - 11:55 pm
ONT
-
SIN
25h 55m
2 stops
Delta Logo
10:00 pm - 5:16 pm
SIN
-
ONT
34h 16m
2 stops
$935Delta
Mon, Apr 27 - Sun, May 17
Korean Air Logo
7:00 am - 5:00 am
ONT
-
SIN
31h 00m
2 stops
Korean Air Logo
7:30 am - 5:10 pm
SIN
-
ONT
24h 40m
2 stops
$940Korean Air
Thu, Apr 30 - Sun, May 10
Delta Logo
6:00 am - 5:00 am
ONT
-
SIN
32h 00m
2 stops
Delta Logo
10:00 pm - 5:10 pm
SIN
-
ONT
34h 10m
2 stops
$985Delta
Sun, Aug 23 - Thu, Sep 3
Korean Air Logo
7:00 am - 5:00 am
ONT
-
SIN
31h 00m
2 stops
Korean Air Logo
10:00 pm - 5:16 pm
SIN
-
ONT
34h 16m
2 stops
$990Korean Air
Tue, Aug 25 - Thu, Sep 3
Korean Air Logo
7:00 am - 11:55 pm
ONT
-
SIN
25h 55m
2 stops
Korean Air Logo
1:25 am - 5:16 pm
SIN
-
ONT
30h 51m
2 stops
$1,009Korean Air
Wed, Aug 19 - Thu, Sep 17
China Airlines Logo
12:45 am - 12:35 am
ONT
-
SIN
32h 50m
1 stop
China Airlines Logo
1:45 pm - 6:00 pm
SIN
-
ONT
19h 15m
1 stop
$1,024China Airlines
Sun, May 3 - Sun, May 10
Delta Logo
7:00 am - 5:00 am
ONT
-
SIN
31h 00m
2 stops
Delta Logo
10:00 pm - 5:10 pm
SIN
-
ONT
34h 10m
2 stops
$1,035Delta
Booking Insights

KAYAK's insights & trends for Ontario to Singapore flights

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 round-trip 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 March, when tickets cost $847 (return) on average. On the other hand, the most expensive months are August and December, when the average cost of round-trip tickets is $2,009 and $1,399 respectively.

Good to know

Low seasonMay
Cheapest flight$437
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Ontario to Singapore

FAQs - booking Singapore flights

  • 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 from Ontario to Singapore 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 from Ontario to Singapore with an airline and back with another airline.

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

Reviews of the top 3 airlines serving from Ontario to Singapore

 
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.
8.9
STARLUX AirlinesOverall score based on 297 reviews
8.8Entertainment
8.6Food
9.2Crew
8.9Comfort
9.0Boarding
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

Leg room was great. Friendly crew. Food is great. Crew always kept the toilet clean.

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!

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

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.

Flight attendants. Food, entertainment and most of all, be on time.

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!

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.

Overall was a lovely experience. The crew were kind and courteous throughout the entire flight.

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

They need to improve on how the plane lands cause it was not smooth at all.

Due to cancellation of connecting flight (Lufthansa) I didn’t fly with United

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

It was perfect! I've never flown with United before, but I definitely will in the future

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

The business class seat is exceptional. I wish the food is more palatable.

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Business class seats felt very cramped compared to other airlines.

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

Information on your arrival and departure airports