HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Singapore

$375+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SIN
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Singapore with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$783
(Korean Air)

One-way from

$456
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$976
Provider with most accurate pricing for Los Angeles-Singapore Changi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Singapore Changi flights.
Search Deals
From Ontario to Singapore
Search Deals
One-way flight from Ontario to Singapore
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 April 15, 2025.

This ScholarTrip deal was found by Cheapflights users on 4/15. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/257:00 amONT - SIN
2 stops31h 00mKorean Air
Sun 11/21:30 amSIN - ONT
2 stops27h 48mKorean Air
Deal found 4/15$782
This United Airlines deal was found by Cheapflights users on 4/14. 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.
Mon 5/196:00 amONT - SIN
1 stop21h 25mUnited Airlines
Tue 6/38:45 amSIN - ONT
1 stop18h 29mUnited Airlines
Deal found 4/14$888
This oojo deal was found by Cheapflights users on 4/14. 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 8/1112:45 amONT - SIN
1 stop20h 50mChina Airlines
Mon 8/252:00 amSIN - ONT
1 stop31h 40mChina Airlines
Deal found 4/14$908
This ScholarTrip deal was found by Cheapflights users on 4/14. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/111:10 pmONT - SIN
1 stop22h 30mSTARLUX Airlines
Fri 9/122:00 pmSIN - ONT
1 stop18h 05mSTARLUX Airlines
Deal found 4/14$1,042
This Mytrip deal was found by Cheapflights users on 4/14. 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 stops30h 05mMultiple Airlines
Thu 5/227:05 amSIN - ONT
2 stops25h 55mMultiple Airlines
Deal found 4/14$1,092
This Delta deal was found by Cheapflights users on 4/14. 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 5/55:45 amONT - SIN
2 stops26h 55mDelta
Thu 5/157:30 amSIN - ONT
2 stops25h 50mDelta
Deal found 4/14$1,157

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 15, 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

Mon 9/1

7:00 am-11:40 pm

2 stops25h 40m

Singapore Changi

Fri 9/12

7:30 am-5:17 pm

2 stops24h 47m

$783

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 5/19

6:00 am-6:25 pm

1 stop21h 25m

Singapore Changi

Tue 6/3

8:45 am-12:14 pm

1 stop18h 29m

$888

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 8/11

12:45 am-12:35 am

1 stop32h 50m

Singapore Changi

Tue 8/26

1:45 pm-6:40 pm

1 stop19h 55m

$908

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 9/1

11:10 pm-12:40 pm

1 stop22h 30m

Singapore Changi

Mon 9/8

2:00 pm-5:05 pm

1 stop18h 05m

$1,042

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 5/4

12:10 am-9:15 pm

2 stops30h 05m

Singapore Changi

Thu 5/22

7:05 am-6:00 pm

2 stops25h 55m

$1,092

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 5/5

5:45 am-11:40 pm

2 stops26h 55m

Singapore Changi

Thu 5/15

7:30 am-6:20 pm

2 stops25h 50m

$1,157

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 5/4

10:40 pm-9:40 am

2 stops44h 00m

Singapore Changi

Tue 5/20

9:10 pm-9:11 pm

2 stops39h 01m

$1,238

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 9/7

6:00 am-9:00 am

2 stops36h 00m

Singapore Changi

Sat 9/13

3:10 am-11:59 pm

2 stops35h 49m

$1,253

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 8/20

7:00 am-11:40 pm

2 stops25h 40m

$375

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 4/20

8:15 am-12:50 am

2 stops25h 35m

$456

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

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 April 15, 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 April 15, 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
154 reviews

Overall

9.1

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

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
154 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Overall

9.1

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

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.
EVA Air
8.4
Very good
1,176 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Overall

9.1

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

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.
Korean Air
8.4
Very good
1,063 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Overall

9.1

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

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
729 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Overall

9.1

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

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
7,918 reviews
STARLUX Airlines
9.1
Wonderful
154 reviews

Overall

9.1

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

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 $460 on Korean Air. Other airlines that offer cheap prices include United Airlines from $491 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Haneda flights
Los Angeles to Narita flights
San Francisco to Haneda flights
San Francisco to Narita flights
Los Angeles to Manila flights
San Francisco to Manila flights
Los Angeles to Incheon Intl flights
Los Angeles to Suvarnabhumi flights
Ontario to Narita flights
Los Angeles to Ho Chi Minh City flights
San Francisco to Taiwan Taoyuan Intl flights
San Francisco to New Delhi flights
Ontario to Haneda flights
San Diego to Narita flights
San Francisco to Hong Kong flights
Los Angeles to Taiwan Taoyuan Intl flights
San Francisco to Hongqiao Intl flights
San Francisco to Incheon Intl flights
San Francisco to Suvarnabhumi flights
Burbank to Narita flights
San Francisco to Pu Dong flights
Los Angeles to Kansai Intl flights
San Francisco to Mumbai flights
San Francisco to Ho Chi Minh City flights
Los Angeles to Hongqiao Intl flights
Los Angeles to Hong Kong flights
Los Angeles to Singapore flights
Ontario to Manila flights
Los Angeles to Pu Dong flights
Los Angeles to Gimpo Intl flights
San Francisco to Kansai Intl flights
Santa Ana to Narita flights
Burbank to Manila flights
San Diego to Haneda flights
San Francisco to Singapore flights
Santa Ana to Manila flights
San Francisco to Capital flights
San Francisco to Gimpo Intl flights
Los Angeles to Denpasar flights
San Francisco to Hyderabad flights
San Jose to Haneda flights
San Jose to New Delhi flights
Las Vegas to Narita flights
Los Angeles to Sung Shan flights
Ontario to Ho Chi Minh City flights
Ontario to Suvarnabhumi flights
Oakland to Narita flights
San Francisco to Bangalore flights
San Francisco to Denpasar flights
San Jose to Manila flights

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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$887Average$1,336FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$966Average$1,082FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.