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$361+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SIN
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap 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 July 29, 2025.

Round-trip from

$705
(FlightHub)

One-way from

$361
(FlightHub)

Popular in

December

Cheapest in

March

Average price

$1,335
From Ontario to Singapore Changi
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One-way flight from Ontario to Singapore Changi
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Highest demand for flights based on searches. 7% potential increase in price ($95 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 29, 2025.

This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:00 amONT - SIN
2 stops26h 40mKorean Air
Tue 9/21:10 amSIN - ONT
2 stops31h 01mKorean Air
Deal found 7/28$705
This lol.travel deal was found by Cheapflights users on 7/28. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/316:50 pmONT - SIN
1 stop20h 25mUnited Airlines
Sun 9/148:45 amSIN - ONT
1 stop23h 52mUnited Airlines
Deal found 7/28$719
This Delta deal was found by Cheapflights users on 7/27. 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.
Mon 9/86:05 amONT - SIN
2 stops26h 35mDelta
Tue 9/2310:30 pmSIN - ONT
2 stops39h 10mDelta
Deal found 7/27$735

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 July 29, 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 8/27

6:00 am-11:40 pm

2 stops26h 40m

Singapore Changi

Tue 9/2

1:10 am-5:11 pm

2 stops31h 01m

$705

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 8/31

6:50 pm-6:15 am

1 stop20h 25m

Singapore Changi

Sun 9/14

8:45 am-5:37 pm

1 stop23h 52m

$719

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 10/29

6:37 am-5:00 am

2 stops31h 23m

Singapore Changi

Tue 11/11

11:00 am-5:17 pm

2 stops22h 17m

$734

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 8/12

6:00 am-11:40 pm

2 stops26h 40m

$361

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 9/1

6:05 am-11:40 pm

2 stops26h 35m

$377

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 8/31

5:10 am-6:15 am

2 stops34h 05m

$410

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Fri 10/24

12:10 am-6:50 pm

2 stops51h 40m

$508

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 1/4

10:50 pm-12:40 am

1 stop33h 50m

$519

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 8/27

11:45 pm-12:40 pm

1 stop21h 55m

$522

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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, October is the cheapest month in which you can book a flight from Ontario to Singapore (average of $995). Flying from Ontario to Singapore in December is currently the most expensive (average of $1,679). 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 SIN?

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 July 29, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Singapore in the morning. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight at noon.

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 July 29, 2025.
Peruse reviews from past customers who have flown with STARLUX Airlines, Korean Air, and China 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
9.0
Wonderful
198 reviews

Overall

9.0

Food

8.8

Entertainment

9.0

Boarding

9.0

Crew

9.3

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.0
Wonderful
198 reviews
STARLUX Airlines
9.0
Wonderful
198 reviews

Overall

9.0

Food

8.8

Entertainment

9.0

Boarding

9.0

Crew

9.3

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,121 reviews
STARLUX Airlines
9.0
Wonderful
198 reviews

Overall

9.0

Food

8.8

Entertainment

9.0

Boarding

9.0

Crew

9.3

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
754 reviews
STARLUX Airlines
9.0
Wonderful
198 reviews

Overall

9.0

Food

8.8

Entertainment

9.0

Boarding

9.0

Crew

9.3

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Delta
8.0
Very good
7,979 reviews
STARLUX Airlines
9.0
Wonderful
198 reviews

Overall

9.0

Food

8.8

Entertainment

9.0

Boarding

9.0

Crew

9.3

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
United Airlines
7.4
Good
8,896 reviews
STARLUX Airlines
9.0
Wonderful
198 reviews

Overall

9.0

Food

8.8

Entertainment

9.0

Boarding

9.0

Crew

9.3

Comfort

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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

    According to our current data, Korean Air ($705), United Airlines ($719), and Delta ($734) offers the cheapest pricing from Ontario to Singapore. You may be able to fly from Ontario to Singapore for 38% less than the average price by searching for these airlines.

  • 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 $361 on Korean Air. Other airlines that offer cheap prices include Delta from $377 and United Airlines from $410 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, October is the cheapest month in which you can book a flight from Ontario to Singapore (average of $995). Flying from Ontario to Singapore in December is currently the most expensive (average of $1,679). 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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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$887Average$1,039FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$970Average$1,125FlexibilityNo cancel feeOn-time70%

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