S$ 166+ 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 11-12. 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
16 Dec — 23 Dec1
1 adult
1 adult, Economy, 0 bags

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 16 November 2025.

Cheapest one-way flight

S$ 166

Cheapest airline

Singapore Airlines

Most popular destination

Mexico City Felipe Ángeles Intl (NLU)

Good one-way deal

S$ 131 or less
The cheapest one-way flight from Ontario is currently to Mexico City Felipe Ángeles Intl.
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On average, Singapore Airlines currently has the cheapest one-way flight from Ontario (avg. price of S$ 1,545).
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Mexico City Felipe Ángeles Intl (NLU) is currently the most popular flight destination from Ontario (average return price of S$ 194).
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Price to beat on a one-way flight from Ontario.
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Find flights from Ontario

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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 16 November 2025.

Sun 1-307:30ONT - SIN
2 stops29h 30mDelta
Mon 9-310:40SIN - ONT
2 stops26h 58mDelta
Deal found 15-11S$ 951
Sun 12-406:45ONT - SIN
2 stops31h 15mKorean Air
Tue 14-401:10SIN - ONT
2 stops36h 30mKorean Air
Deal found 16-11S$ 957
Fri 6-315:30ONT - SIN
2 stops45h 30mDelta
Tue 10-310:40SIN - ONT
2 stops26h 58mDelta
Deal found 15-11S$ 958
Wed 26-1106:45ONT - SIN
2 stops25h 25mKorean Air
Wed 3-1201:35SIN - ONT
2 stops31h 33mKorean Air
Deal found 16-11S$ 969
Thu 27-1106:45ONT - SIN
2 stops30h 15mKorean Air
Wed 3-1201:35SIN - ONT
2 stops31h 33mKorean Air
Deal found 16-11S$ 980
Sun 1-318:37ONT - SIN
1 stop21h 23mUnited Airlines
Sun 8-310:10SIN - ONT
1 stop22h 31mUnited Airlines
Deal found 15-11S$ 1,015
Sun 11-118:39ONT - SIN
1 stop21h 21mUnited Airlines
Thu 12-310:10SIN - ONT
2 stops25h 40mUnited Airlines
Deal found 15-11S$ 1,022
Wed 26-1106:00ONT - SIN
1 stop22h 15mUnited Airlines
Sat 6-1222:20SIN - ONT
1 stop29h 58mUnited Airlines
Deal found 16-11S$ 1,023
Wed 26-1106:00ONT - SIN
2 stops32h 55mUnited Airlines
Thu 4-1210:10SIN - ONT
1 stop18h 08mUnited Airlines
Deal found 16-11S$ 1,028
Wed 26-1105:05ONT - SIN
2 stops34h 55mUnited Airlines
Sat 29-1110:10SIN - ONT
1 stop28h 41mUnited Airlines
Deal found 16-11S$ 1,030
Sat 7-318:37ONT - SIN
1 stop33h 38mUnited Airlines
Thu 12-322:20SIN - ONT
1 stop28h 58mUnited Airlines
Deal found 15-11S$ 1,031
Sun 12-405:10ONT - SIN
2 stops28h 35mUnited Airlines
Wed 15-409:00SIN - ONT
1 stop23h 47mUnited Airlines
Deal found 16-11S$ 1,032

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 16 November 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

Mon 2-3

07:30-00:10

2 stops24h 40m

Singapore Changi

Tue 10-3

10:40-22:38

2 stops26h 58m

S$ 951

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 12-4

06:45-05:00

2 stops31h 15m

Singapore Changi

Wed 15-4

07:30-22:40

2 stops30h 10m

S$ 957

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sat 24-1

06:00-20:15

1 stop22h 15m

Singapore Changi

Sun 1-2

10:10-17:43

1 stop23h 33m

S$ 1,015

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 22-2

18:37-08:00

1 stop21h 23m

Singapore Changi

Mon 16-3

10:10-17:41

1 stop22h 31m

S$ 1,015

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 12-2

06:00-20:15

1 stop22h 15m

Singapore Changi

Tue 24-3

10:10-17:41

1 stop22h 31m

S$ 1,015

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 2-3

18:37-08:00

1 stop21h 23m

Singapore Changi

Sun 8-3

10:10-16:41

1 stop22h 31m

S$ 1,015

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 27-11

06:00-20:15

1 stop22h 15m

Singapore Changi

Wed 3-12

10:10-12:17

1 stop18h 07m

S$ 1,015

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 2-3

18:37-08:00

1 stop21h 23m

Singapore Changi

Wed 11-3

10:10-17:41

1 stop22h 31m

S$ 1,015

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 16-2

18:37-08:00

1 stop21h 23m

Singapore Changi

Tue 24-3

10:10-20:50

2 stops25h 40m

S$ 1,022

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 11-1

18:39-08:00

1 stop21h 21m

Singapore Changi

Thu 12-3

10:10-20:50

2 stops25h 40m

S$ 1,022

Flights are sorted by cheapest return flights first.

Deals found on 16-11

Showing 1-10 of 21 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$ 755). Flying from Ontario in December will prove the most costly (average of S$ 1,025). 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: Dallas (117 flights per day), Seattle (99 flights per day) and Atlanta (79 flights per day).

Denver Intl
Denver Intl
From S$ 123

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$ 123. Explore other affordable destinations below.

Denver Intl
Denver Intl
From S$ 123

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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 16 November 2025.

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

    This month, the top selected destinations from Ontario are Dallas/Fort Worth Airport, Denver, Guadalajara. 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$ 123 to Denver (prices may vary depending on the airline and departure time). On average, users have booked flights for S$ 195 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 December. 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$ 957 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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