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$363+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SIN
May 17 — May 241
Sat 5/17
Sat 5/24
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 May 12, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$712
(StudentUniverse)

One-way from

$363
(ScholarTrip)

Popular in

December

Cheapest in

October

Average price

$1,000
Provider with most accurate pricing for Los Angeles-Singapore Changi flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Singapore Changi flights.
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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. 9% potential increase in price ($112 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($46 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 12, 2025.

This StudentUniverse deal was found by Cheapflights users on 5/11. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/236:30 amONT - SIN
2 stops26h 10mKorean Air
Thu 8/77:30 amSIN - ONT
2 stops30h 17mKorean Air
Deal found 5/11$712
This Delta deal was found by Cheapflights users on 5/11. 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.
Thu 11/137:00 amONT - SIN
2 stops30h 00mDelta
Mon 11/1711:00 amSIN - ONT
2 stops27h 42mDelta
Deal found 5/11$803
This United Airlines deal was found by Cheapflights users on 5/11. 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 7/316:39 pmONT - SIN
2 stops45h 01mUnited Airlines
Thu 10/168:45 amSIN - ONT
1 stop23h 47mUnited Airlines
Deal found 5/11$921
This oojo deal was found by Cheapflights users on 5/12. 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 8/811:45 pmONT - SIN
1 stop21h 55mSTARLUX Airlines
Mon 9/12:00 pmSIN - ONT
1 stop18h 05mSTARLUX Airlines
Deal found 5/12$982
This oojo deal was found by Cheapflights users on 5/11. 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.
Mon 9/2212:10 amONT - SIN
1 stop21h 25mChina Airlines
Thu 10/161:45 pmSIN - ONT
1 stop19h 15mChina Airlines
Deal found 5/11$1,026
This Gurufare deal was found by Cheapflights users on 5/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/316:30 amONT - SIN
2 stops26h 10mMultiple Airlines
Wed 10/152:00 amSIN - ONT
1 stop31h 00mMultiple Airlines
Deal found 5/11$1,134
This oojo deal was found by Cheapflights users on 5/11. 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.
Wed 10/16:00 amONT - SIN
2 stops36h 00mQatar Airways
Tue 10/76:45 pmSIN - ONT
2 stops44h 14mQatar Airways
Deal found 5/11$1,260
This Etihad Airways deal was found by Cheapflights users on 5/11. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1511:00 pmONT - SIN
2 stops43h 40mEtihad Airways
Mon 9/299:10 pmSIN - ONT
2 stops39h 31mEtihad Airways
Deal found 5/11$1,302

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 May 12, 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

Wed 7/23

6:30 am-11:40 pm

2 stops26h 10m

Singapore Changi

Thu 8/7

7:30 am-10:47 pm

2 stops30h 17m

$712

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 9/28

6:00 am-11:40 pm

2 stops26h 40m

Singapore Changi

Tue 10/14

10:30 pm-5:17 pm

2 stops33h 47m

$814

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 7/31

6:39 pm-6:40 am

2 stops45h 01m

Singapore Changi

Thu 10/16

8:45 am-5:32 pm

1 stop23h 47m

$921

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Fri 8/8

11:45 pm-12:40 pm

1 stop21h 55m

Singapore Changi

Mon 9/1

2:00 pm-5:05 pm

1 stop18h 05m

$982

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 9/22

12:10 am-12:35 pm

1 stop21h 25m

Singapore Changi

Thu 10/16

1:45 pm-6:00 pm

1 stop19h 15m

$1,026

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 7/31

6:30 am-11:40 pm

2 stops26h 10m

Singapore Changi

Wed 10/15

2:00 am-6:00 pm

1 stop31h 00m

$1,134

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 10/1

6:00 am-3:45 pm

2 stops42h 45m

Singapore Changi

Mon 10/6

3:10 am-11:59 pm

2 stops35h 49m

$1,260

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 9/15

11:00 pm-9:40 am

2 stops43h 40m

Singapore Changi

Mon 9/29

9:10 pm-9:41 pm

2 stops39h 31m

$1,302

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 7/17

6:30 am-11:40 pm

2 stops26h 10m

$363

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 8/3

6:00 am-5:00 am

2 stops32h 00m

$458

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 16 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 May 12, 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 May 12, 2025.
Read reviews from past customers who have flown STARLUX Airlines, EVA Air and Korean Air 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
168 reviews

Boarding

9.1

Entertainment

9.0

Crew

9.3

Food

8.9

Overall

9.1

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
168 reviews
STARLUX Airlines
9.1
Wonderful
168 reviews

Boarding

9.1

Entertainment

9.0

Crew

9.3

Food

8.9

Overall

9.1

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,192 reviews
STARLUX Airlines
9.1
Wonderful
168 reviews

Boarding

9.1

Entertainment

9.0

Crew

9.3

Food

8.9

Overall

9.1

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,072 reviews
STARLUX Airlines
9.1
Wonderful
168 reviews

Boarding

9.1

Entertainment

9.0

Crew

9.3

Food

8.9

Overall

9.1

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very good
1,472 reviews
STARLUX Airlines
9.1
Wonderful
168 reviews

Boarding

9.1

Entertainment

9.0

Crew

9.3

Food

8.9

Overall

9.1

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
168 reviews

Boarding

9.1

Entertainment

9.0

Crew

9.3

Food

8.9

Overall

9.1

Comfort

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

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 $363 on Korean Air. Other airlines that offer cheap prices include Delta from $458 and United Airlines from $491 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 May 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$887Average$1,335FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$966Average$1,070FlexibilityNo cancel feeOn-time70%

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