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S$ 73+ 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 16-7. 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
23 Jun — 30 Jun1
1 adult

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 June 2025.

Good round-trip deal

S$ 352 or less

Good one-way deal

S$ 738 or less
Price to beat on a round-trip flight from Ontario.
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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 June 2025.

Thu 7-806:25ONT - SIN
2 stops26h 15mKorean Air
Wed 20-807:30SIN - ONT
2 stops30h 12mKorean Air
Deal found 17-6S$ 870
Thu 7-818:39ONT - SIN
1 stop20h 36mUnited Airlines
Wed 20-808:45SIN - ONT
1 stop18h 28mUnited Airlines
Deal found 16-6S$ 930
Mon 4-806:25ONT - SIN
2 stops26h 15mDelta
Mon 11-807:30SIN - ONT
2 stops30h 12mDelta
Deal found 17-6S$ 942
Tue 11-1106:00ONT - SIN
2 stops26h 55mMultiple Airlines
Wed 19-1106:35SIN - ONT
2 stops22h 02mMultiple Airlines
Deal found 17-6S$ 1,082
Wed 27-823:45ONT - SIN
1 stop21h 55mSTARLUX Airlines
Mon 22-914:00SIN - ONT
1 stop18h 05mSTARLUX Airlines
Deal found 18-6S$ 1,193
Tue 30-900:10ONT - SIN
1 stop21h 25mChina Airlines
Wed 15-1013:45SIN - ONT
1 stop19h 15mChina Airlines
Deal found 15-6S$ 1,252

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 June 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

Thu 7-8

06:25-23:40

2 stops26h 15m

Singapore Changi

Wed 20-8

07:30-22:42

2 stops30h 12m

S$ 870

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 7-8

18:39-06:15

1 stop20h 36m

Singapore Changi

Wed 20-8

08:45-12:13

1 stop18h 28m

S$ 930

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 4-8

06:25-23:40

2 stops26h 15m

Singapore Changi

Mon 11-8

07:30-22:42

2 stops30h 12m

S$ 942

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 11-11

06:00-00:55

2 stops26h 55m

Singapore Changi

Wed 19-11

06:35-12:37

2 stops22h 02m

S$ 1,082

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 27-8

23:45-12:40

1 stop21h 55m

Singapore Changi

Mon 22-9

14:00-17:05

1 stop18h 05m

S$ 1,193

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 30-9

00:10-12:35

1 stop21h 25m

Singapore Changi

Wed 15-10

13:45-18:00

1 stop19h 15m

S$ 1,252

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 21-7

06:25-23:40

2 stops26h 15m

S$ 463

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 20-7

13:19-06:15

1 stop25h 56m

S$ 526

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 16-9

06:00-00:20

2 stops27h 20m

S$ 608

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 12-8

16:00-03:10

3 stops44h 10m

S$ 632

Flights are sorted by cheapest return flights first.

Deals found on 17-6

Showing 1-10 of 13 results
1
2

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$ 747). Flying from Ontario in January will prove the most costly (average of S$ 1,008). 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 (152 flights per day), Dallas (137 flights per day) and Atlanta (82 flights per day).

Denver Intl
Denver Intl
From S$ 274

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$ 352. Explore other affordable destinations below.

Denver Intl
Denver Intl
From S$ 274

Airline reviews for flights from Ontario

Get insights into the airlines that provide service from Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from Ontario. In the last 7 days, Cheapflights users made a total of 200,618 searches.
STARLUX Airlines
9.1
Wonderful
Check prices

Crew

9.3

Comfort

9.0

Entertainment

9.0

Food

8.9

Overall

9.1

Boarding

9.0

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
9.1
Wonderful
STARLUX Airlines
9.1
Wonderful
Check prices

Crew

9.3

Comfort

9.0

Entertainment

9.0

Food

8.9

Overall

9.1

Boarding

9.0

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
1,090 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Crew

9.3

Comfort

9.0

Entertainment

9.0

Food

8.9

Overall

9.1

Boarding

9.0

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.
Japan Airlines
8.3
Very Good
1,494 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Crew

9.3

Comfort

9.0

Entertainment

9.0

Food

8.9

Overall

9.1

Boarding

9.0

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
742 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Crew

9.3

Comfort

9.0

Entertainment

9.0

Food

8.9

Overall

9.1

Boarding

9.0

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
7,964 reviews
STARLUX Airlines
9.1
Wonderful
Check prices

Crew

9.3

Comfort

9.0

Entertainment

9.0

Food

8.9

Overall

9.1

Boarding

9.0

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.

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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 June 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, 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$ 352 to Denver (prices may vary depending on the airline and departure time). On average, users have booked flights for S$ 545 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 January. 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$ 870 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.

See more FAQs

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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