$358 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 11/15. 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

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Cheap Flights from Ontario to Singapore

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Singapore
Singapore2 stops$734
Singapore
Singapore2 stops$734

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

Wed, Nov 12 - Thu, Nov 27
Delta Logo
6:45 am - 5:00 amONT-SIN
30h 15m2 stops
Delta Logo
11:00 am - 6:18 pmSIN-ONT
23h 18m2 stops
$734Delta
Find Deal
Tue, Nov 11 - Tue, Dec 2
Delta Logo
5:49 pm - 5:00 amONT-SIN
43h 11m2 stops
Delta Logo
11:00 am - 5:17 pmSIN-ONT
22h 17m2 stops
$740Delta
Find Deal
Sun, Sep 7 - Sun, Sep 21
United Airlines Logo
6:00 am - 6:25 pmONT-SIN
21h 25m1 stop
United Airlines Logo
8:45 am - 12:13 pmSIN-ONT
18h 28m1 stop
$778United Airlines
Find Deal
Sun, Jan 18 - Wed, Feb 11
United Airlines Logo
6:00 am - 8:15 pmONT-SIN
22h 15m1 stop
United Airlines Logo
10:10 am - 12:14 pmSIN-ONT
18h 04m1 stop
$784United Airlines
Find Deal
Fri, Jan 16 - Fri, Jan 23
Korean Air Logo
6:45 am - 12:10 amONT-SIN
25h 25m2 stops
Korean Air Logo
10:30 pm - 3:20 pmSIN-ONT
32h 50m2 stops
$810Korean Air
Find Deal
Mon, Oct 6 - Wed, Nov 5
STARLUX Airlines Logo
11:10 pm - 12:40 pmONT-SIN
22h 30m1 stop
STARLUX Airlines Logo
2:45 pm - 4:30 pmSIN-ONT
17h 45m1 stop
$929STARLUX Airlines
Find Deal
Wed, Sep 24 - Wed, Oct 1
STARLUX Airlines Logo
11:10 pm - 12:40 pmONT-SIN
22h 30m1 stop
STARLUX Airlines Logo
2:00 pm - 5:05 pmSIN-ONT
18h 05m1 stop
$932STARLUX Airlines
Find Deal
Tue, Nov 4 - Sun, Nov 16
China Airlines Logo
10:50 pm - 12:40 amONT-SIN
33h 50m1 stop
China Airlines Logo
2:00 am - 4:50 pmSIN-ONT
30h 50m1 stop
$951China Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
China Airlines Logo
12:10 am - 12:35 pmONT-SIN
21h 25m1 stop
China Airlines Logo
2:00 am - 6:00 pmSIN-ONT
31h 00m1 stop
$971China Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 14
Korean Air Logo
7:35 am - 5:00 amONT-SIN
30h 25m2 stops
Korean Air Logo
1:10 am - 5:10 pmSIN-ONT
31h 00m2 stops
$978Korean Air
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 ($734) and United Airlines ($778).

Good to know

Low seasonMarch
Cheapest flight$358
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly with an average 29% 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.

  • What is the cheapest time of day to fly to Singapore?

    The cheapest time of day to fly to Singapore is generally in the morning, when round-trip flights cost $1,057 on average. Morning departures are around 21% cheaper than evening flights, on average. The most expensive time of day to fly to Singapore is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,371.

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 211 reviews
9.2Crew
8.8Food
8.9Comfort
8.9Entertainment
9.0Boarding
Airline reviews

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

6.0 GoodAnonymous, Aug 2025TPE - LAX
Read more STARLUX Airlines reviews

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.

Greetings when you arrive on the plane and good bye when you leave. Very attentive flight attendants.

Serve me a meal, I fell asleep during the flight. So they passed me twice.

Seats are not table comfortable. Crew members are pretty good. Can be much better!!

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.

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. :)

Staff was so nice and very helpful with directions aswell!

It was our first time flying with China Airlines and had a very nice experience. The airline staff & crews both on the ground and air were very nice. Food on the plane was very good. Will recommend it to family and friends.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Boarded plane and then delayed 1.5 hours while on the plane

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

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