$298 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

Mon, Aug 24 - Mon, Sep 7
Delta Logo
7:00 am - 5:00 am
ONT
-
SIN
31h 00m
2 stops
Delta Logo
1:25 am - 10:40 pm
SIN
-
ONT
36h 15m
2 stops
$636Delta
Thu, Aug 20 - Wed, Sep 16
Korean Air Logo
7:00 am - 7:15 pm
ONT
-
SIN
45h 15m
2 stops
Korean Air Logo
1:25 am - 5:16 pm
SIN
-
ONT
30h 51m
2 stops
$641Korean Air
Mon, Aug 24 - Fri, Sep 11
Delta Logo
7:00 am - 5:00 am
ONT
-
SIN
31h 00m
2 stops
Delta Logo
7:30 am - 10:40 pm
SIN
-
ONT
30h 10m
2 stops
$672Delta
Sun, May 3 - Sun, May 24
Korean Air Logo
7:00 am - 11:55 pm
ONT
-
SIN
25h 55m
2 stops
Korean Air Logo
10:00 pm - 5:10 pm
SIN
-
ONT
34h 10m
2 stops
$677Korean Air
Tue, May 12 - Tue, May 26
United Airlines Logo
6:00 am - 6:35 pm
ONT
-
SIN
21h 35m
1 stop
United Airlines Logo
8:45 am - 10:37 pm
SIN
-
ONT
28h 52m
1 stop
$722United Airlines
Tue, May 12 - Wed, May 27
United Airlines Logo
6:00 am - 6:35 pm
ONT
-
SIN
21h 35m
1 stop
United Airlines Logo
8:45 am - 8:42 pm
SIN
-
ONT
26h 57m
2 stops
$726United Airlines
Sun, May 10 - Tue, Jun 23
United Airlines Logo
6:59 pm - 6:35 pm
ONT
-
SIN
32h 36m
1 stop
United Airlines Logo
8:45 am - 10:37 pm
SIN
-
ONT
28h 52m
1 stop
$727United Airlines
Thu, Aug 20 - Thu, Sep 17
United Airlines Logo
6:00 am - 6:35 pm
ONT
-
SIN
21h 35m
1 stop
United Airlines Logo
11:05 am - 11:06 pm
SIN
-
ONT
27h 01m
2 stops
$731United Airlines
Tue, Apr 14 - Mon, Apr 27
United Airlines Logo
6:00 am - 12:45 am
ONT
-
SIN
27h 45m
2 stops
United Airlines Logo
9:00 am - 12:20 pm
SIN
-
ONT
18h 20m
1 stop
$734United Airlines
Thu, Apr 30 - Thu, May 14
United Airlines Logo
6:00 am - 6:35 pm
ONT
-
SIN
21h 35m
1 stop
United Airlines Logo
11:05 am - 9:41 am
SIN
-
ONT
37h 36m
2 stops
$737United Airlines
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 August, when tickets cost $801 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,426 and $1,349 respectively.

Good to know

Low seasonMay
Cheapest flight$312
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 36% increase in price.
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 275 reviews
8.8Entertainment
8.9Boarding
8.9Comfort
9.2Crew
8.7Food
Airline reviews

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.

10.0 ExcellentAdam, Feb 2026
SEA - TPE
Read more STARLUX Airlines reviews

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.

Crew is very attentive. Another new airbus 350-900 plane. Very modern.

Passengers were confused and freaking out coz the flight information wasn’t showing on the board that was running with all the departing flights. B9 gate was still showing Cathay Pacific bound for HK 15:50 was on until 22:07. STARLUX staff cameater but didn’t let the passengers go in to pre departure area until 22:45 for the 23:30 boarding time

The aircraft is fairly new. The screen is big and it's great to enjoy movies on a long haul flight. However, the food quality , and drink and snack selections, have room for improvement.

Preboarding food selection is an excellent idea. On the other end I did know the choice. People in my area know the choice. It ends with I got my meal till most of them are half way to finish their meal.

Overall it’s good . However the food quality can be improved .

My luggage was forced open and broke the zipper. I received it in a huge STARLUX plastic bag. Unfortunately, I have a round trip ticket but might be my first and last with this airline

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.

I did not like how the plane landed. It was not smooth.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

We had turbulence ever 1/2 hr or so and the captains announcements were SOOOO LOUD

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

it was a very short flight so my expectations were low.

Entertainment kept turning itself off. Gave up on watching a movie.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

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

Information on your arrival and departure airports