S$ 98+ Cheap flights from Ontario

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11-10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — SIN
18 Oct — 25 Oct1
1 adult
1 adult, Economy

What to know about flights from Ontario

Discover essential information about flights departing from Ontario, including flight schedules, destinations, airlines operating at the Ontario airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 18 September 2025.

Cheapest airline

Turkish Airlines

Good one-way deal

S$ 128 or less
On average, Turkish Airlines currently has the cheapest one-way flight from Ontario (avg. price of S$ 1,367).
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Price to beat on a one-way flight from Ontario.
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Find flights from Ontario

Cheapest flights from Ontario
Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 18 September 2025.

Sun 9-1106:45ONT - SIN
2 stops25h 25mKorean Air
Mon 24-1101:35SIN - ONT
2 stops31h 34mKorean Air
Deal found 16-9S$ 870
Sun 9-1118:38ONT - SIN
1 stop21h 22mUnited Airlines
Tue 25-1110:10SIN - ONT
1 stop18h 27mUnited Airlines
Deal found 17-9S$ 932
Thu 4-1206:40ONT - SIN
2 stops25h 30mDelta
Wed 24-1222:30SIN - ONT
2 stops34h 38mDelta
Deal found 17-9S$ 937
Fri 3-1006:00ONT - SIN
2 stops46h 55mKorean Air
Wed 29-1001:35SIN - ONT
2 stops30h 35mKorean Air
Deal found 17-9S$ 944
Sun 5-1006:00ONT - SIN
2 stops32h 00mDelta
Thu 6-1110:40SIN - ONT
2 stops22h 30mDelta
Deal found 17-9S$ 948
Tue 30-906:00ONT - SIN
2 stops26h 40mKorean Air
Tue 7-1007:30SIN - ONT
2 stops24h 40mKorean Air
Deal found 17-9S$ 956
Sun 5-1006:00ONT - SIN
2 stops32h 00mDelta
Mon 3-1122:30SIN - ONT
2 stops38h 50mDelta
Deal found 17-9S$ 960
Thu 30-1007:35ONT - SIN
2 stops30h 25mKorean Air
Wed 5-1101:35SIN - ONT
2 stops31h 35mKorean Air
Deal found 14-9S$ 965
Fri 3-1006:00ONT - SIN
2 stops46h 55mKorean Air
Sun 2-1122:30SIN - ONT
2 stops34h 40mKorean Air
Deal found 17-9S$ 967
Mon 10-1106:45ONT - SIN
2 stops30h 15mDelta
Wed 19-1110:40SIN - ONT
2 stops28h 15mDelta
Deal found 15-9S$ 971

Find flights from Ontario within your budget

 
Find flights departing from Ontario that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 18 September 2025. In the last 7 days, Cheapflights users made a total of 200,618 searches

Fly to

Singapore

Route

Depart

Return

Price

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 30-11

06:45-05:00

2 stops30h 15m

Singapore Changi

Wed 17-12

01:35-22:47

2 stops37h 12m

S$ 937

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 4-12

06:40-05:00

2 stops30h 20m

Singapore Changi

Thu 25-12

10:40-17:08

2 stops22h 28m

S$ 937

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 29-10

07:35-00:10

2 stops25h 35m

Singapore Changi

Thu 27-11

10:40-18:18

2 stops23h 38m

S$ 937

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 1-12

06:45-05:00

2 stops30h 15m

Singapore Changi

Wed 17-12

01:35-22:47

2 stops37h 12m

S$ 937

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 6-10

07:35-05:00

2 stops30h 25m

Singapore Changi

Fri 31-10

10:40-22:41

2 stops51h 01m

S$ 944

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 29-10

07:35-00:10

2 stops25h 35m

Singapore Changi

Wed 26-11

22:30-18:18

2 stops35h 48m

S$ 948

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 30-9

06:00-23:40

2 stops26h 40m

Singapore Changi

Mon 6-10

01:10-17:10

2 stops31h 00m

S$ 956

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sat 29-11

18:38-08:00

1 stop21h 22m

Singapore Changi

Wed 17-12

10:10-12:17

1 stop18h 07m

S$ 1,001

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 19-10

20:16-06:15

1 stop18h 59m

Singapore Changi

Thu 23-10

08:45-17:40

1 stop23h 55m

S$ 1,001

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 30-11

06:00-20:15

1 stop22h 15m

Singapore Changi

Sun 14-12

10:10-12:18

1 stop18h 08m

S$ 1,001

Flights are sorted by cheapest return flights first.

Deals found on 16-9

Showing 1-10 of 22 results
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Best time to book a flight from Ontario

Have a flexible travel schedule? Discover the best time to fly from Ontario with our price prediction graph.
Estimated return 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.

Travel insights for flights from Ontario

Get recent, data-driven insights about flights from Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ontario?

Currently, February is the cheapest month in which you can book a flight from Ontario (average of S$ 743). Flying from Ontario in June will prove the most costly (average of S$ 985). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

What are popular destinations to fly to from Ontario?

From Ontario you can expect to find greater availability for the following destinations: Seattle (116 flights per day), Atlanta (88 flights per day) and Dallas (86 flights per day).

Denver Intl
Denver Intl
From S$ 95

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Denver Intl, with prices starting at S$ 121. Explore other affordable destinations below.

Denver Intl
Denver Intl
From S$ 95

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Related info for your journey

Access useful and relevant information related to your journey from Ontario. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 18 September 2025.

  • What are the most popular destinations to fly to from Ontario?

    This month, the top selected destinations from Ontario are Denver, Dallas/Fort Worth Airport, Honolulu. Throughout the year, Dallas/Fort Worth Airport, Denver, Guadalajara are some of the top choices made by users flying from Ontario.

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as S$ 121 to Denver (prices may vary depending on the airline and departure time). On average, users have booked flights for S$ 463 to fly from Ontario.

  • What is the cheapest month to fly from Ontario?

    Currently, the cheapest month for flights from Ontario is February. The most expensive month for flights is June. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • Where are the cheapest places to fly to from Ontario?

    View the cheapest flight destinations from Ontario:
    Fly from Ontario to Singapore from S$ 933 round trip

  • How does Cheapflights help users find flights from Ontario?

    900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight from Ontario today with Cheapflights!

  • Why should you use Cheapflights to find cheap flight tickets from Ontario?

    Cheapflights helps you find that perfect flight from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

  • Can Cheapflights find flights from Ontario with no change fees?

    Need flexible booking options for your flight from Ontario ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

  • Can Cheapflights notify me if prices for flights from Ontario become cheaper?

    Yes! Start tracking prices for flights from Ontario today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive the alerts.

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight from Ontario today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ontario?

Cheapflights helps you find that perfect flight from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ontario with no change fees?

Need flexible booking options for your flight from Ontario ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ontario become cheaper?

Yes! Start tracking prices for flights from Ontario today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive the alerts.

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