ONT - SIN

$377 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 1/30. 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 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
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Everything you should know

Cheapest round-trip
$733
Delta
gio 3/5gio 3/19
ONT - SIN • 2 stops
Cheapest one-way
$377
Delta
ven 1/30
ONT - SIN • 2 stops
Top airlines
Delta
Cheapest • from $733 (round-trip)
STARLUX Airlines
Best reviews • 8.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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Booking Insights
Flight Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Singapore

gio, mar 5 - gio, mar 19
Delta Logo
6:00 am - 12:10 amONT-SIN
26h 10m2 stops
Delta Logo
10:30 pm - 10:34 pmSIN-ONT
39h 04m2 stops
$733Delta
Find Deal
mar, gen 13 - lun, gen 19
American Airlines Logo
3:09 pm - 6:35 amONT-SIN
47h 26m2 stops
American Airlines Logo
2:20 am - 6:45 pmSIN-ONT
32h 25m2 stops
$734American Airlines
Find Deal
mar, gen 13 - mar, gen 20
American Airlines Logo
7:16 am - 5:25 pmONT-SIN
42h 09m2 stops
American Airlines Logo
8:15 am - 10:48 pmSIN-ONT
30h 33m2 stops
$737American Airlines
Find Deal
mer, gen 21 - ven, feb 6
Delta Logo
5:10 pm - 8:25 pmONT-SIN
59h 15m2 stops
Delta Logo
10:30 pm - 10:44 pmSIN-ONT
40h 14m2 stops
$739Delta
Find Deal
ven, gen 9 - sab, gen 17
United Airlines Logo
6:00 am - 8:15 pmONT-SIN
22h 15m1 stop
United Airlines Logo
10:10 am - 12:17 pmSIN-ONT
18h 07m1 stop
$783United Airlines
Find Deal
ven, feb 6 - mer, feb 25
United Airlines Logo
6:00 am - 8:15 pmONT-SIN
22h 15m1 stop
United Airlines Logo
10:10 am - 5:41 pmSIN-ONT
23h 31m1 stop
$784United Airlines
Find Deal
ven, gen 9 - lun, gen 19
United Airlines Logo
1:24 pm - 8:15 pmONT-SIN
38h 51m2 stops
United Airlines Logo
10:20 pm - 8:58 pmSIN-ONT
38h 38m2 stops
$788United Airlines
Find Deal
gio, gen 8 - sab, gen 17
United Airlines Logo
1:53 pm - 8:15 pmONT-SIN
38h 22m1 stop
United Airlines Logo
10:10 am - 12:17 pmSIN-ONT
18h 07m1 stop
$789United Airlines
Find Deal
gio, gen 8 - lun, gen 19
United Airlines Logo
6:39 pm - 8:15 pmONT-SIN
33h 36m1 stop
United Airlines Logo
10:20 pm - 8:58 pmSIN-ONT
38h 38m2 stops
$794United Airlines
Find Deal
mar, gen 6 - lun, gen 19
United Airlines Logo
1:24 pm - 8:15 pmONT-SIN
38h 51m2 stops
United Airlines Logo
10:20 pm - 12:47 pmSIN-ONT
30h 27m2 stops
$801United Airlines
Find Deal
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.

Which airlines provide the cheapest flights from Ontario to Singapore?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Singapore were found on Delta ($733) and American Airlines ($734).

Which airlines fly non-stop between Ontario and Singapore?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Ontario to Singapore.

There are 3 airlines that fly nonstop from Ontario to Singapore. They are: China Airlines, STARLUX Airlines and United Airlines. The cheapest price of all airlines flying this route was found with United Airlines at $783 for a round-trip flight. On average, the best prices for this route can be found at China Airlines.

Good to know

Low seasonAugust
Cheapest flight$377
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 36% 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 $377 for a one-way ticket and $733 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?

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

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

    The two airlines most popular with KAYAK users for flights from Ontario to Singapore are STARLUX Airlines and China Airlines. With an average price for the route of $1,373 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 $1,046 and an overall rating of 8.3.

  • 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.

Reviews of the top 3 airlines serving 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.
8.9
STARLUX AirlinesOverall score based on 237 reviews
9.0Boarding
8.7Food
9.2Crew
8.9Entertainment
8.9Comfort
Airline reviews

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

10.0 ExcellentBrian, Oct 2025SIN - TPE
Read more STARLUX Airlines reviews

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

Flight cancelled due to inclement weather yet rival airline EVA Air with the same route departed 2 hours later and landed safely while our flight was cancelled and rescheduled for 36 hours later.

The staff in air and on land went above and beyond! I would definately recommend and we will fly Starlux again!

I need Starlux to respond to my complaint and issues for my flight.

Someon vomit during boarding. My seat was next to the vomit. I asked crew member to switch seat, but they said it was a full flight. I had my baby with me. My baby got sick after the flight. He was in the hospital for 2 days.

The airplane so clean and they have a nice crew

it they come out with resent movie and good food

The crew could have been kinder and less pushy. The premium economy seats don't have enough cushion. The seats are to hard and the flight became painful and uncomfortable after an hour of flying.

Aircraft is new and toilets are spacious, but toilets are quite filthy. They should clean more often. They have a long list of drink offer but are actually not available during meal. They said they’ll come back with them and you don’t get them until after dinner which means you eat your meals without any drinks if you were to get something that they don’t have on the cart. They are strict about removing headphones during take off and landing which is new to us since the movies did not get turned off. Instead, we we’re forced to watch their commercials during that time. We probably would fly with them again but not with the cost we spent. For the record, I work in tourism and travel a lot for inspections.

Our transit in Taipei was disappointing. The ground crew could not tell us where the lounge was located, so we wasted 15 minutes trying to find it. The airline has a great review, but our experience says otherwise.

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

The flat bed full lying position is not comfortable at all, this could be improved, it is at an awkward position which i dont have the same issues with other airlines business class.

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.

Sat next to a woman who had her period. Blood was on her seat and on the arm rest between us. I ended up having period blood on my jacket and shoes. Very gross!

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.

Been flying with China Airline over years many times. Good experience with them, no issues.

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

This was an older airplane. The cabin was constantly warm to hot throughout the 10 hour flight and there were no vents to personalize air flow. Also since it was an older plane, the material and comfort of the chairs were very uncomfortable. I left my flight with major soreness on my tailbone.

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

Premium Plus is a really good idea for longer flights

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

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

Information on your arrival and departure airports