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$458+ Cheap flights from Ontario (ONT) to Singapore

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SIN
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
1 adult, Economy
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Cheap flight deals from Ontario to Singapore

Keep the following information in mind while searching for Ontario to Singapore flight deals. Data was last updated March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$880
(United Airlines)

One-way from

$458
(Delta)

Popular in

December

Cheapest in

February

Average price

$951
Provider with most accurate pricing for Los Angeles-Singapore Changi flight deals.
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From Ontario to Singapore
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One-way flight from Ontario to Singapore
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Highest demand for flights based on searches. 7% potential increase in price ($94 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find 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 26, 2025.

This United Airlines deal was found by Cheapflights users on 3/24. 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 4/247:05 amONT - SIN
1 stop20h 20mUnited Airlines
Thu 5/89:00 amSIN - ONT
1 stop18h 24mUnited Airlines
Deal found 3/24$880
This KAYAK deal was found by Cheapflights users on 3/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/247:00 amONT - SIN
2 stops25h 10mKorean Air
Sun 12/211:30 amSIN - ONT
2 stops31h 57mKorean Air
Deal found 3/24$947
This SmartFares deal was found by Cheapflights users on 3/25. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2312:10 amONT - SIN
1 stop33h 25mChina Airlines
Wed 10/11:45 pmSIN - ONT
1 stop19h 15mChina Airlines
Deal found 3/25$949
This Mytrip deal was found by Cheapflights users on 3/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/412:10 amONT - SIN
2 stops27h 25mMultiple Airlines
Tue 5/207:05 amSIN - ONT
2 stops25h 55mMultiple Airlines
Deal found 3/25$1,025
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/265:30 pmONT - SIN
2 stops44h 30mDelta
Fri 5/21:10 amSIN - ONT
2 stops36h 47mDelta
Deal found 3/24$1,077
This Booking.com deal was found by Cheapflights users on 3/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2411:10 pmONT - SIN
1 stop22h 30mSTARLUX Airlines
Wed 10/12:00 pmSIN - ONT
1 stop18h 05mSTARLUX Airlines
Deal found 3/25$1,103
This oojo deal was found by Cheapflights users on 3/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:00 amONT - SIN
2 stops27h 20mJapan Airlines
Tue 9/308:05 amSIN - ONT
2 stops25h 18mJapan Airlines
Deal found 3/24$1,151
This oojo deal was found by Cheapflights users on 3/25. 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.
Sun 9/76:00 amONT - SIN
2 stops36h 00mQatar Airways
Sun 9/216:45 pmSIN - ONT
2 stops44h 14mQatar Airways
Deal found 3/25$1,253

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 26, 2025.
Use the filters below to find and compare flights from Ontario to Singapore that are best for you.

Fly from

Ontario

Fly to

Singapore

Route

Depart

Return

Price

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 4/24

7:05 am-6:25 pm

1 stop20h 20m

Singapore Changi

Thu 5/8

9:00 am-12:24 pm

1 stop18h 24m

$880

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 5/4

12:10 am-12:35 am

1 stop33h 25m

Singapore Changi

Mon 5/19

2:00 am-8:20 pm

1 stop33h 20m

$972

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 5/4

12:10 am-6:35 pm

2 stops27h 25m

Singapore Changi

Tue 5/20

7:05 am-6:00 pm

2 stops25h 55m

$1,025

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sat 4/26

5:30 pm-5:00 am

2 stops44h 30m

Singapore Changi

Fri 5/2

1:10 am-10:57 pm

2 stops36h 47m

$1,077

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 9/18

6:00 am-12:20 am

2 stops27h 20m

Singapore Changi

Tue 9/30

8:05 am-6:23 pm

2 stops25h 18m

$1,151

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 9/7

6:00 am-9:00 am

2 stops36h 00m

Singapore Changi

Sun 9/21

6:45 pm-11:59 pm

2 stops44h 14m

$1,253

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 7/7

11:45 pm-12:40 pm

1 stop21h 55m

Singapore Changi

Fri 7/18

2:00 pm-5:40 pm

1 stop18h 40m

$1,291

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 4/13

5:40 am-5:00 am

2 stops32h 20m

$458

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sat 4/19

1:20 pm-6:45 am

1 stop26h 25m

$491

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 7/30

6:10 am-12:20 am

2 stops27h 10m

$503

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 18 results
1
2

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, September is the cheapest month in which you can book a flight from Ontario to Singapore (average of $1,011). Flying from Ontario to Singapore in December is currently the most expensive (average of $1,684). 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.

What is the cheapest time of day to fly from ONT to SG?

Find hourly flight availability from Ontario to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 26, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Singapore as you normally would.

Rainfall in Singapore by month

Plan your trip to Singapore by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Singapore ranges from 5.9 - 10.6 inches per month. December is typically the wettest month, when rainfall can reach 10.6 in. July is typically the driest time to visit Singapore when rainfall is around 5.9 in.

Temperature in Singapore by month

Plan your trip to Singapore by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 78.8 F).

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 26, 2025.
Read reviews from past customers who have flown STARLUX Airlines, Japan Airlines and China Airlines from Ontario to Singapore. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
146 reviews

Entertainment

9.0

Crew

9.3

Overall

9.1

Boarding

9.0

Comfort

9.0

Food

8.9

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
STARLUX Airlines
9.1
Wonderful
146 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Entertainment

9.0

Crew

9.3

Overall

9.1

Boarding

9.0

Comfort

9.0

Food

8.9

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Entertainment

9.0

Crew

9.3

Overall

9.1

Boarding

9.0

Comfort

9.0

Food

8.9

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
China Airlines
8.2
Very good
722 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Entertainment

9.0

Crew

9.3

Overall

9.1

Boarding

9.0

Comfort

9.0

Food

8.9

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Delta
8.0
Very good
7,891 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Entertainment

9.0

Crew

9.3

Overall

9.1

Boarding

9.0

Comfort

9.0

Food

8.9

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Qatar Airways
7.4
Good
3,539 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Entertainment

9.0

Crew

9.3

Overall

9.1

Boarding

9.0

Comfort

9.0

Food

8.9

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

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.

  • What airport do you fly from for flights from Ontario to Singapore?

    If you book a flight to Singapore from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • What are the cheapest airlines to fly from Ontario to Singapore one-way?

    One-way options have recently been found by users for as low as $458 on Delta. Other airlines that offer cheap prices include United Airlines from $486 and China Airlines from $549 one-way.

  • 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, September is the cheapest month in which you can book a flight from Ontario to Singapore (average of $1,011). Flying from Ontario to Singapore in December is currently the most expensive (average of $1,684). 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

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Top 2 airlines flying from Ontario to Singapore

Discover the top 2 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 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$887Average$1,336FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$966Average$1,103FlexibilityNo cancel feeOn-time70%
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