Singapore

$487+ Cheap flights from Ontario (ONT) to Singapore (SIN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SIN
May 28 — Jun 41
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Cheap flight deals from Ontario to Singapore

Cheapest flights from Ontario to Singapore
Explore the most affordable flight options available from Ontario to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.

This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Mon 5/257:30 am
SIN
-
ONT
2 stops24h 40m
Delta
Deal found 4/22$885
This Korean Air deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:00 am
ONT
-
SIN
2 stops46h 25m
Korean Air
Sun 11/110:40 am
SIN
-
ONT
2 stops46h 37m
Korean Air
Deal found 4/22$891
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Mon 5/251:25 am
SIN
-
ONT
2 stops30h 45m
Delta
Deal found 4/22$935
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:00 am
ONT
-
SIN
2 stops25h 55m
Delta
Thu 5/147:30 am
SIN
-
ONT
2 stops24h 40m
Delta
Deal found 4/23$985
This Korean Air deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:00 am
ONT
-
SIN
2 stops25h 55m
Korean Air
Wed 5/137:30 am
SIN
-
ONT
2 stops24h 40m
Korean Air
Deal found 4/23$991
This oojo deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:00 pm
ONT
-
SIN
1 stop38h 35m
Singapore Airlines
Sat 11/79:00 am
SIN
-
ONT
1 stop21h 47m
Singapore Airlines
Deal found 4/26$996
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Mon 10/197:30 am
SIN
-
ONT
2 stops24h 47m
Delta
Deal found 4/23$1,035
This Korean Air deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:00 am
ONT
-
SIN
2 stops30h 00m
Korean Air
Mon 11/3010:40 am
SIN
-
ONT
2 stops46h 37m
Korean Air
Deal found 4/24$1,040
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:59 pm
ONT
-
SIN
2 stops44h 01m
Delta
Tue 5/121:25 am
SIN
-
ONT
2 stops30h 45m
Delta
Deal found 4/27$1,041
This Kissandfly.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:49 pm
ONT
-
SIN
1 stop32h 46m
Lufthansa
Mon 5/119:00 am
SIN
-
ONT
1 stop18h 22m
Lufthansa
Deal found 4/24$1,067
This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:00 am
ONT
-
SIN
1 stop21h 35m
United Airlines
Tue 5/129:00 am
SIN
-
ONT
1 stop23h 52m
United Airlines
Deal found 4/24$1,071

Find flight deals from Ontario to Singapore

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$985
(Delta)

One-way from

$487
(Delta)

Popular in

August

Cheapest in

March

Average price

$1,331
Provider with most accurate pricing for Ontario-Singapore Changi flight deals.
Provider most trusted by Cheapflights users for Ontario-Singapore Changi flights.
From Ontario to Singapore Changi
One-way flight from Ontario to Singapore Changi
Highest demand for flights based on searches. 17% potential increase in price ($259 potential increase over avg. RT price).
Cheapest flight prices on average. 6% potential price decrease ($73 potential savings vs. average RT price).
Average for round-trip flights in April 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
Use the filters below to find and compare flights from Ontario to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 10/11

7:00 am-5:00 am

2 stops31h 00m

Singapore Changi

Tue 10/20

7:30 am-5:17 pm

2 stops24h 47m

$1,035

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 10/11

7:00 am-5:00 am

2 stops31h 00m

Singapore Changi

Wed 10/21

10:00 pm-5:17 pm

2 stops34h 17m

$1,035

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 8/20

7:13 pm-6:15 am

1 stop20h 02m

Singapore Changi

Thu 9/17

8:45 am-8:04 pm

1 stop26h 19m

$1,071

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 10/12

7:00 am-11:55 pm

2 stops25h 55m

Singapore Changi

Thu 10/22

7:30 am-5:17 pm

2 stops24h 47m

$1,095

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 5/12

1:30 pm-6:45 am

1 stop26h 15m

Singapore Changi

Fri 5/15

9:00 am-10:59 pm

1 stop28h 59m

$1,278

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 6/3

6:45 am-5:00 am

2 stops31h 15m

Singapore Changi

Thu 6/11

1:25 am-10:41 pm

2 stops36h 16m

$1,315
Quickest round-trip

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 5/19

6:00 am-6:35 pm

1 stop21h 35m

Singapore Changi

Thu 6/4

8:45 am-5:56 pm

1 stop24h 11m

$1,431

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 9/29

12:10 am-12:35 am

1 stop33h 25m

Singapore Changi

Mon 10/5

12:15 pm-6:00 pm

2 stops20h 45m

$1,477

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 8/4

1:18 pm-6:15 am

2 stops25h 57m

Singapore Changi

Thu 8/13

8:45 am-6:11 pm

1 stop24h 26m

$1,521

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 10/6

12:10 am-10:15 pm

2 stops31h 05m

Singapore Changi

Tue 10/20

2:00 am-6:00 pm

1 stop31h 00m

$1,538

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Ontario to Singapore

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Singapore in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Singapore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Singapore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Singapore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Singapore flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Singapore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Ontario to Singapore?

Currently, March is the cheapest month in which you can book a flight from Ontario to Singapore (average of $847). Flying from Ontario to Singapore in August is currently the most expensive (average of $2,009). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Ontario to Singapore?

Reviews of airlines servicing Singapore

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated April 28, 2026.
Peruse reviews from past customers who have flown with STARLUX Airlines,China Airlines, andUnited Airlines from Ontario to Singapore to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.9

Comfort

8.9

Boarding

8.9

Crew

9.2

Entertainment

8.8

Food

8.6

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again

Overall

8.9

Comfort

8.9

Boarding

8.9

Crew

9.2

Entertainment

8.8

Food

8.6

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again

Overall

8.9

Comfort

8.9

Boarding

8.9

Crew

9.2

Entertainment

8.8

Food

8.6

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again

Overall

8.9

Comfort

8.9

Boarding

8.9

Crew

9.2

Entertainment

8.8

Food

8.6

Reviews

1 / 12
10.0
Excellent

ember j,Apr 2026

TPE - ONT

Amazing how an airline can elevate service by just modernizing structures such as the massage chairs in the boarding areas to the massive airbus with the rolls Royce engines with the electrochromatic windows ! And not to mention the flawless service of the aircrew even with the language difference. I’ll definitely fly with starlux again

Related info for your journey

Find useful and relevant information for your journey from Ontario to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How long is the flight from Ontario to Singapore?

    A quick flight from Ontario to Singapore can take about 20h 02m. Delta provides one of the quickest options available for as low as $1,071. There are 8791 mi between Ontario and Singapore. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Ontario to Singapore round-trip?

    According to our current data, United Airlines ($783), China Airlines ($958), and STARLUX Airlines ($981) offers the cheapest pricing from Ontario to Singapore. You may be able to fly from Ontario to Singapore for 35% less than the average price by searching for these airlines.

  • Can I find deals for flights from Ontario to Singapore that include hotel bookings?

    Yes. In addition to deals on Ontario to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Singapore.

  • Can I find deals for business class flights from Ontario to Singapore?

    Yes. Cheapflights offers flight deals from Ontario to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Singapore?

    Currently, March is the cheapest month in which you can book a flight from Ontario to Singapore (average of $847). Flying from Ontario to Singapore in August is currently the most expensive (average of $2,009). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Singapore

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Ontario to Singapore

Discover the top 3 airlines that operate flights from Ontario to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$783Average$1,189FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$958Average$998FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$981Average$1,378FlexibilityNo cancel feeOn-timeN/A

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