ONT - SIN

$408 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 10/20. 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
$834
Typical prices: $1,573-$1,225
Delta
Thu 8/20Wed 9/16
ONT - SIN • 2 stops
Cheapest one-way
$408
Overall average: $410
Korean Air
Tue 10/20
ONT - SIN • 2 stops
Top airlines
Cheapest • from $834 (round-trip)
Best reviews • 8.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Singapore. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $1,458 (round-trip)
Shortest trip • 21h 49m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 34% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Singapore!
Flight Deals
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

Thu, Aug 20 - Wed, Sep 16
Delta Logo
6:00 am - 5:00 am
ONT
-
SIN
32h 00m
2 stops
Delta Logo
1:25 am - 10:40 pm
SIN
-
ONT
36h 15m
2 stops
$834Delta
Tue, Nov 3 - Mon, Nov 16
Delta Logo
6:00 am - 5:00 am
ONT
-
SIN
31h 00m
2 stops
Delta Logo
1:35 am - 5:17 pm
SIN
-
ONT
31h 42m
2 stops
$835Delta
Wed, Oct 21 - Wed, Oct 28
Korean Air Logo
7:00 am - 11:55 pm
ONT
-
SIN
25h 55m
2 stops
Korean Air Logo
1:35 am - 5:17 pm
SIN
-
ONT
30h 42m
2 stops
$839Korean Air
Wed, Nov 4 - Wed, Nov 11
Korean Air Logo
7:00 am - 12:10 am
ONT
-
SIN
25h 10m
2 stops
Korean Air Logo
1:35 am - 5:17 pm
SIN
-
ONT
31h 42m
2 stops
$840Korean Air
Thu, Aug 20 - Thu, Sep 17
United Airlines Logo
1:56 pm - 6:15 am
ONT
-
SIN
25h 19m
1 stop
United Airlines Logo
8:45 am - 6:11 pm
SIN
-
ONT
24h 26m
1 stop
$873United Airlines
Tue, Sep 1 - Sun, Sep 13
United Airlines Logo
1:18 pm - 6:15 am
ONT
-
SIN
25h 57m
2 stops
United Airlines Logo
8:45 am - 8:01 pm
SIN
-
ONT
26h 16m
1 stop
$878United Airlines
Sat, Aug 15 - Thu, Aug 27
United Airlines Logo
1:56 pm - 6:35 pm
ONT
-
SIN
37h 39m
1 stop
United Airlines Logo
8:45 am - 8:01 pm
SIN
-
ONT
26h 16m
1 stop
$879United Airlines
Sun, Aug 23 - Wed, Aug 26
United Airlines Logo
1:56 pm - 6:15 am
ONT
-
SIN
25h 19m
1 stop
United Airlines Logo
11:05 am - 10:59 pm
SIN
-
ONT
50h 54m
2 stops
$882United Airlines
Thu, Aug 20 - Thu, Sep 17
United Airlines Logo
1:56 pm - 6:15 am
ONT
-
SIN
25h 19m
1 stop
United Airlines Logo
11:05 am - 8:01 pm
SIN
-
ONT
23h 56m
2 stops
$883United Airlines
Thu, Aug 13 - Thu, Aug 27
United Airlines Logo
7:13 pm - 6:15 am
ONT
-
SIN
20h 02m
1 stop
United Airlines Logo
6:15 am - 6:11 pm
SIN
-
ONT
26h 56m
2 stops
$885United 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.

How much is a round-trip flight from Ontario to Singapore?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Singapore departing in August.

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, where tickets cost $847 (return) on average. On the other hand, the most expensive months are August and January, where the average cost of round-trip tickets is $2,009 and $1,833 respectively.

Good to know

Low seasonMay
Cheapest flight$408
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 25% lower on average.
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 7 days, the lowest price for a flight from Ontario to Singapore was $408 for a one-way ticket and $834 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 $1,378 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 $1,104 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 327 reviews
8.9Boarding
9.1Crew
8.8Entertainment
8.9Comfort
8.6Food
Airline reviews

It did not feel like a luxury airline. We had booked premium economy and opted for AVML meals. This was one of the worst meal in any of the flights and I’m a frequent flyer. No great snack options were available. Drink selection was limited to wine and beer. On a long flight, you need a variety of food which was unfortunately not available. The seats were just OK and the foot rest are not comfortable.. Airline staff for courteous Audio and video section is extremely limited

6.0 GoodKartika, May 2026
KIX - TPE
Read more STARLUX Airlines reviews

It did not feel like a luxury airline. We had booked premium economy and opted for AVML meals. This was one of the worst meal in any of the flights and I’m a frequent flyer. No great snack options were available. Drink selection was limited to wine and beer. On a long flight, you need a variety of food which was unfortunately not available. The seats were just OK and the foot rest are not comfortable.. Airline staff for courteous Audio and video section is extremely limited

Hostesses were very nice I am disappointed that I paid extra 900$for premium economy which wasn't much upgraded from regular economy, I have wasted my money on this trip 😫

amazing and great food. everything was smooth from start to finished

love this boutique luxury airline. crew was nice and attentive. Lounge is too small , i think they should have more area for relaxing and lounging not just to sit and eat .. feels like a cafeteria more than a lounge. overall i enjoy it. food on the plane LAX to Teipei should inprove a bit. no flavor and more drinks pls

We are scare because almost missing the fligh from Seattle to San Diego ! Starlux not have enough members for servicing with wheel chairs? We almost left behind , so we must walking !?

We are on economy premium but they put us in economy seating? Asking why the fligh supports said : If you not happy you can claim for refund?

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

Everything was fine except the seats were quite compressed and hard for the 12 hour flight

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.

Very bad. They don’t allow group people to sit together by blocking most of seats and opening only single seat during online checking in. . By doing so, they can rip off customers at the check-in counter by collecting extra money if we want to sit together in the same row.

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!

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Lost of requested seat assignments. Lost my husband's meal choice

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

My flight time was changed without any notification to me which ruined my time sensitive plans so I ended up completely changing my travel plans and no reimbursement.

No screens or meal options. Freezing cold. Dirty seats. Left late.

I liked that my son and I were reseated next to each other (we had different bookings). I liked that it was a directg flight and mostly on time. I liked that you provided pillows and blankets. Flight attendants were generally courteous. The messaging through wifi did not work well. The food was not good. Seats are very narrow and I felt slightly claustraphobic in the window seat.

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

Information on your arrival and departure airports