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$356+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SIN
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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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 March 10, 2026.

This Delta deal was found by Cheapflights users on 3/9. 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 9/77:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Sun 9/1310:00 pm
SIN
-
ONT
2 stops39h 40m
Delta
Deal found 3/9$635
This Korean Air deal was found by Cheapflights users on 3/9. 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.
Thu 5/76:45 am
ONT
-
SIN
2 stops31h 15m
Korean Air
Sun 6/710:00 pm
SIN
-
ONT
2 stops34h 16m
Korean Air
Deal found 3/9$640
This Delta deal was found by Cheapflights users on 3/9. 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 9/61:00 pm
ONT
-
SIN
2 stops63h 15m
Delta
Thu 9/177:30 am
SIN
-
ONT
2 stops31h 14m
Delta
Deal found 3/9$641
This Delta deal was found by Cheapflights users on 3/9. 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 9/127:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Thu 9/177:30 am
SIN
-
ONT
2 stops31h 14m
Delta
Deal found 3/9$685
This Korean Air deal was found by Cheapflights users on 3/9. 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 9/117:00 am
ONT
-
SIN
2 stops31h 00m
Korean Air
Thu 9/177:30 am
SIN
-
ONT
2 stops30h 10m
Korean Air
Deal found 3/9$690
This Delta deal was found by Cheapflights users on 3/9. 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 9/65:05 pm
ONT
-
SIN
2 stops44h 55m
Delta
Sat 9/1910:00 pm
SIN
-
ONT
2 stops39h 40m
Delta
Deal found 3/9$691
This Delta deal was found by Cheapflights users on 3/5. 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 8/107:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Tue 9/87:30 am
SIN
-
ONT
2 stops30h 10m
Delta
Deal found 3/5$723
This Korean Air deal was found by Cheapflights users on 3/5. 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.
Thu 8/137:00 am
ONT
-
SIN
2 stops45h 15m
Korean Air
Sun 9/610:00 pm
SIN
-
ONT
2 stops39h 40m
Korean Air
Deal found 3/5$728
This Delta deal was found by Cheapflights users on 3/5. 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 8/911:55 am
ONT
-
SIN
2 stops50h 05m
Delta
Sun 9/610:00 pm
SIN
-
ONT
2 stops39h 40m
Delta
Deal found 3/5$729
This Delta deal was found by Cheapflights users on 3/9. 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 8/167:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Fri 8/287:30 am
SIN
-
ONT
2 stops31h 14m
Delta
Deal found 3/9$735
This Delta deal was found by Cheapflights users on 3/7. 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 8/227:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Tue 9/110:00 pm
SIN
-
ONT
2 stops39h 40m
Delta
Deal found 3/7$740
This Korean Air deal was found by Cheapflights users on 3/5. 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.
Mon 8/107:00 am
ONT
-
SIN
2 stops25h 55m
Korean Air
Fri 9/47:30 am
SIN
-
ONT
2 stops24h 46m
Korean Air
Deal found 3/5$745

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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$635
(Delta)

One-way from

$356
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$847
Provider with most accurate pricing for Ontario-Singapore Changi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Singapore Changi flights.
Search Deals
From Ontario to Singapore Changi
Search Deals
One-way flight from Ontario to Singapore Changi
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 10, 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

Mon 5/4

7:00 am-5:00 am

2 stops31h 00m

Singapore Changi

Thu 5/7

7:30 am-5:10 pm

2 stops24h 40m

$640

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 5/4

6:00 am-6:35 pm

1 stop21h 35m

Singapore Changi

Thu 5/7

8:35 pm-9:41 am

1 stop28h 06m

$821

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sat 5/9

6:00 am-6:35 pm

1 stop21h 35m

Singapore Changi

Sat 6/6

8:45 am-10:50 pm

1 stop29h 05m

$863

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sat 5/9

6:59 pm-6:45 am

1 stop20h 46m

Singapore Changi

Sat 5/16

9:00 am-5:52 pm

1 stop23h 52m

$863

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 5/5

6:00 am-5:00 am

2 stops32h 00m

Singapore Changi

Wed 5/13

7:30 am-5:10 pm

2 stops24h 40m

$867

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 4/2

6:00 am-6:35 pm

1 stop21h 35m

Singapore Changi

Thu 4/9

9:00 am-12:37 pm

2 stops42h 37m

$939

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Fri 4/24

7:00 am-5:00 am

2 stops31h 00m

Singapore Changi

Sat 5/2

7:30 am-10:37 pm

2 stops30h 07m

$985
Quickest round-trip

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 4/19

6:00 am-6:35 pm

1 stop21h 35m

Singapore Changi

Sun 4/26

9:00 am-12:20 pm

1 stop18h 20m

$1,017

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 8/9

6:39 pm-6:15 am

1 stop20h 36m

Singapore Changi

Sun 9/6

8:45 am-8:52 pm

2 stops27h 07m

$1,032

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 7/28

6:00 am-6:35 pm

1 stop21h 35m

Singapore Changi

Fri 7/31

8:45 am-12:47 pm

2 stops43h 02m

$1,102

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 21 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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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, April is the cheapest month in which you can book a flight from Ontario to Singapore (average of $573). Flying from Ontario to Singapore in June is currently the most expensive (average of $769). 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.

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 March 10, 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.
STARLUX Airlines
8.9
Very good
279 reviews

Overall

8.9

Boarding

8.9

Comfort

8.9

Entertainment

8.8

Crew

9.2

Food

8.7

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
STARLUX Airlines
8.9
Very good
279 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Overall

8.9

Boarding

8.9

Comfort

8.9

Entertainment

8.8

Crew

9.2

Food

8.7

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
China Airlines
8.3
Very good
811 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Overall

8.9

Boarding

8.9

Comfort

8.9

Entertainment

8.8

Crew

9.2

Food

8.7

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
United Airlines
7.4
Good
9,413 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Overall

8.9

Boarding

8.9

Comfort

8.9

Entertainment

8.8

Crew

9.2

Food

8.7

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

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 21h 35m. Korean Air provides one of the quickest options available for as low as $821. 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 ($964), and STARLUX Airlines ($981) offers the cheapest pricing from Ontario to Singapore. You may be able to fly from Ontario to Singapore for 25% 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, April is the cheapest month in which you can book a flight from Ontario to Singapore (average of $573). Flying from Ontario to Singapore in June is currently the most expensive (average of $769). 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.
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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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$783Average$1,189FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$964Average$1,001FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$981Average$1,373FlexibilityNo cancel feeOn-timeN/A

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