$407 Find Cheap Flights from Ontario to Singapore - Compare and Save

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 7/29. 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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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 - Thu, Sep 17
Delta Logo
6:20 am - 5:00 am
ONT
-
SIN
31h 40m
2 stops
Delta Logo
7:30 am - 10:40 pm
SIN
-
ONT
30h 10m
2 stops
$834Delta
Mon, Oct 26 - Wed, Oct 28
Korean Air Logo
6:20 am - 12:10 am
ONT
-
SIN
26h 50m
2 stops
Korean Air Logo
1:35 am - 5:12 pm
SIN
-
ONT
30h 37m
2 stops
$839Korean Air
Sun, Aug 9 - Mon, Aug 24
Delta Logo
9:43 am - 5:00 am
ONT
-
SIN
52h 17m
2 stops
Delta Logo
10:00 pm - 10:45 pm
SIN
-
ONT
39h 45m
2 stops
$840Delta
Sun, Jul 26 - Sun, Aug 16
Delta Logo
5:10 pm - 5:00 am
ONT
-
SIN
44h 50m
2 stops
Delta Logo
10:00 pm - 11:16 am
SIN
-
ONT
52h 16m
2 stops
$846Delta
Mon, Oct 26 - Thu, Oct 29
United Airlines Logo
6:00 am - 8:15 pm
ONT
-
SIN
23h 15m
1 stop
United Airlines Logo
10:10 am - 8:06 pm
SIN
-
ONT
24h 56m
1 stop
$873United Airlines
Tue, Aug 18 - Thu, Aug 27
United Airlines Logo
6:08 am - 6:35 pm
ONT
-
SIN
21h 27m
1 stop
United Airlines Logo
8:45 am - 8:53 pm
SIN
-
ONT
27h 08m
2 stops
$877United Airlines
Fri, Aug 7 - Tue, Aug 25
Delta Logo
6:00 am - 5:00 am
ONT
-
SIN
32h 00m
2 stops
Delta Logo
7:30 am - 10:45 pm
SIN
-
ONT
30h 15m
2 stops
$878Delta
Thu, Aug 20 - Thu, Sep 17
United Airlines Logo
6:08 am - 6:40 am
ONT
-
SIN
33h 32m
2 stops
United Airlines Logo
8:45 am - 8:01 pm
SIN
-
ONT
26h 16m
1 stop
$882United Airlines
Fri, Aug 7 - Sun, Aug 23
Korean Air Logo
6:20 am - 5:00 am
ONT
-
SIN
31h 40m
2 stops
Korean Air Logo
10:00 pm - 10:45 pm
SIN
-
ONT
39h 45m
2 stops
$883Korean Air
Sat, Nov 14 - Tue, Feb 16
Delta Logo
5:05 pm - 5:00 am
ONT
-
SIN
43h 55m
2 stops
Delta Logo
1:35 am - 10:43 pm
SIN
-
ONT
37h 08m
2 stops
$884Delta
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 $628 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,408 and $1,326 respectively.

Good to know

Low seasonJuly
Cheapest flight$407
Most popular time to fly and prices are also 27% 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.
8.8
STARLUX AirlinesOverall score based on 359 reviews
8.9Boarding
8.9Comfort
9.1Crew
8.6Food
8.8Entertainment
Airline reviews

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 😫

6.0 GoodAnonymous, May 2026
ONT - TPE
Read more STARLUX Airlines reviews

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 😫

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

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

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 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.

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.

I thought all the while when I booked my flight I am entitled to check- in 2 luggages of 23 Kg each only to find out that the ticket I purchased online entitle me for only one luggage. I have been traveling for over 20 years and this is the first experience to such… so frustrating.

I was pleasantly happy with this airline, which is new to me. The crew was attentive and the seats felt better than most other economy. There was plenty of bin space. Glad I got to pick the seat I had(based on distance from baby image on seat map).

The plane is very clean. The selection of movies is excellent!

We were not sat together for the longeset duration of our travel very uncomfortable didnt enjoy that they fed us at 2 am

I love my Delta crew, they were so welcoming and helpful.

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

I did not take the flight, tried to cancel it right after I booked it, but was unable to reach anyone. I blame Kayak for this situation because they sent the booking through another company and I was unable to get anyone to talk to me about the situation. I had to just take the hit and pay for another flight through Cathay Pacific, which was wonderful. I will never use Kayak again. (I bet they don’t post this review!) I’ll just post about them on social media sites. I don’t want anyone to have to go through the hassle and expense I dealt with.

Unable to set seat assignment. Got a call from presumably “China airlines representative” but was asking for an exorbitant amount for the seat assignment. Was traveling as a family end up being assigned to different seats as a result. Will never use underpricer again.

Not many selections for entertainment. Bulk head seats are no longer available with out fee at the counter. That’s pretty lame.

I would have liked to know how to order a special meal (for medical purposes) before the flight.

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

For a long-haul flight, the crew did a very good job of keeping the lavatories clean and the aisles clear.

The check-in crew at SF did not put on breakable glass stickers on check-in baggages which caused my antique whisky bottle to break during transportation.

It was a short, comfortable flight. It did leave an hour late due to the pilot having to be replaced (family emergency) but that didn’t inconvenience myself & my friend. The situation was explained, eventually.

The seats were very uncomfortable. I paid for the front economy. i swear they added a row of seats in there. It was so tight, that I could measure the distance between my seat and the one in front from my elbow to the tips of my fingers plus six inches. The seat cushion was completely worn out. The dinner was very good. Thank you for having a vegetarian option as a standard. But breakfast was nothing but sugar. that's not food. The crew was crabby and rude, especially in regards to coming to the back gallery. And the entertainment choice: why would you put violent movies on the choice? the Godfather? Some movies with black women being beaten over the head with clubs? What the heck? You know that when there is a movie on a plane, everyone gets to watch it. Why choose the most violent titles possible? The total number of movies were very limited, and the television, even more so. No games were available on the set. The wellness section was nice, thank you. I appreciated a galley in the middle where I could stand. The seats were unbearable.

UA594 was delayed multiple times. I ended up getting picked up so I can make it in time for work 6AM on Monday, 7/6/2026

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

Excellent communication from the staff. We actually arrived early. Very friendly and professional staff.

It was perfect! United Airlines staff was extremely caring, super friendly and professional

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

Food is very bad and entertint not too many options ... flight attendet service is not good

For a 17 hour flight, they kept us well feed. The music selection could be better curated. The entertainment selection was about what is expected. The crew was fantastic.

I forgot to pre order gluten free on a 16 hour flight and I am pretty sure the crew raided their own lunches and first class to keep me fed.

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

Information on your arrival and departure airports