$322 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 2/23. 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

Wed, Jan 28 - Mon, Mar 2
Delta Logo
7:30 am - 12:10 am
ONT
-
SIN
24h 40m
2 stops
Delta Logo
10:30 pm - 10:37 pm
SIN
-
ONT
40h 07m
2 stops
$649Delta
Mon, Mar 2 - Tue, Mar 17
Delta Logo
7:30 am - 5:00 am
ONT
-
SIN
29h 30m
2 stops
Delta Logo
10:40 am - 10:34 pm
SIN
-
ONT
26h 54m
2 stops
$650Delta
Tue, Jan 27 - Wed, Mar 4
Delta Logo
3:30 pm - 12:10 am
ONT
-
SIN
40h 40m
2 stops
Delta Logo
10:40 am - 10:37 pm
SIN
-
ONT
27h 57m
2 stops
$655Delta
Wed, Jan 28 - Sun, Mar 1
Delta Logo
7:30 am - 12:10 am
ONT
-
SIN
24h 40m
2 stops
Delta Logo
10:40 am - 10:37 pm
SIN
-
ONT
27h 57m
2 stops
$674Delta
Tue, Jan 27 - Sat, Feb 28
Delta Logo
3:30 pm - 12:10 am
ONT
-
SIN
40h 40m
2 stops
Delta Logo
10:30 pm - 11:49 pm
SIN
-
ONT
41h 19m
2 stops
$680Delta
Mon, Feb 16 - Thu, Feb 19
Delta Logo
6:00 am - 5:00 am
ONT
-
SIN
31h 00m
2 stops
Delta Logo
10:30 pm - 10:37 pm
SIN
-
ONT
40h 07m
2 stops
$698Delta
Sun, Feb 15 - Thu, Feb 19
Delta Logo
1:10 pm - 5:00 am
ONT
-
SIN
47h 50m
2 stops
Delta Logo
10:30 pm - 11:49 pm
SIN
-
ONT
41h 19m
2 stops
$704Delta
Mon, Jan 26 - Wed, Mar 4
Delta Logo
6:00 am - 12:10 am
ONT
-
SIN
26h 10m
2 stops
Delta Logo
1:35 am - 10:37 pm
SIN
-
ONT
37h 02m
2 stops
$774Delta
Mon, Mar 30 - Mon, Apr 13
Korean Air Logo
6:00 am - 11:40 pm
ONT
-
SIN
26h 40m
2 stops
Korean Air Logo
7:30 am - 5:15 pm
SIN
-
ONT
24h 45m
2 stops
$775Korean Air
Sun, Feb 15 - Fri, Apr 24
Delta Logo
1:10 pm - 5:00 am
ONT
-
SIN
47h 50m
2 stops
Delta Logo
7:30 am - 5:15 pm
SIN
-
ONT
24h 45m
2 stops
$780Delta
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 long does a flight from Ontario to Singapore take?

The duration of a flight to Singapore depends on your arrival airport. The shortest route to Singapore from Ontario is to Singapore, which takes 21h 21m.

Good to know

Low seasonAugust
Cheapest flight$322
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 33% 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 264 reviews
8.8Entertainment
8.6Food
8.8Comfort
9.1Crew
8.9Boarding
Airline reviews

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

10.0 ExcellentRick, Jan 2026
TPE - SEA
Read more STARLUX Airlines reviews

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

I went to the gate that showed on the flight board but they changed gates at the last minute and I missed my flight. I had to buy new ticket from EVA air to Manila and take 3 hour bus ride back to my home. Will never fly Starlux again!

Starlux was great service and awesome food and drinks👍🏼 will take starlux again for my next vacation👍🏼

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.

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.

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. :)

left on time, reasonable boarding process arrived early luggage came out quickly

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

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.

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

Information on your arrival and departure airports