What is the cheapest airline that flies from Ontario to Singapore Changi?

Korean Air and United Airlines are the most popular carriers operating from Ontario to Singapore Changi

What airlines fly to Singapore?

Singapore Airlines, United Airlines and Cathay Pacific are the top three most popular airlines that fly to Singapore from Ontario according to our data. Singapore Airlines is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 16 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Singapore Changi Airport?

Prices for flights from Ontario Airport to Singapore Changi Airport are updated daily.

How many operators does momondo search for flights from Ontario Airport to Singapore Changi Airport?

The number of operators available for flights from Ontario Airport to Singapore Changi Airport is 3 as of October 2026.

How old do you have to be to fly from Ontario Airport to Singapore Changi Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Singapore Changi Airport.

What documentation or ID do you need to fly to Singapore Changi Airport?

The necessary travel and health documents for your Singapore Changi Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$354 Cheap Flights from Ontario to Singapore in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Singapore

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 12:15 amONT Ontario-SIN Singapore Changi

25h 15m2 stops Seattle/Tacoma Intl Incheon Intl

1:40 am - 10:43 pmSIN Singapore Changi-ONT Ontario

37h 03m2 stops Incheon Intl Seattle/Tacoma Intl

$731Korean Air

Wed, Jan 13 - Mon, Jan 25

7:00 am - 12:15 amONT Ontario-SIN Singapore Changi

25h 15m2 stops Seattle/Tacoma Intl Incheon Intl

10:30 pm - 1:57 pmSIN Singapore Changi-ONT Ontario

31h 27m2 stops Incheon Intl Seattle/Tacoma Intl

$754Korean Air

Thu, Jan 28 - Sun, Feb 14

3:30 pm - 8:25 pmONT Ontario-SIN Singapore Changi

36h 55m2 stops Seattle/Tacoma Intl Incheon Intl

10:30 pm - 1:57 pmSIN Singapore Changi-ONT Ontario

31h 27m2 stops Incheon Intl Seattle/Tacoma Intl

$754Korean Air

Wed, Jan 27 - Sun, Feb 14

6:00 am - 8:15 pmONT Ontario-SIN Singapore Changi

23h 15m1 stop San Francisco

10:10 am - 5:56 pmSIN Singapore Changi-ONT Ontario

23h 46m1 stop San Francisco

$873United Airlines

Wed, Oct 28 - Thu, Nov 5

6:00 am - 8:15 pmONT Ontario-SIN Singapore Changi

22h 15m1 stop San Francisco

10:10 am - 5:56 pmSIN Singapore Changi-ONT Ontario

23h 46m1 stop San Francisco

$873United Airlines

Sun, Nov 1 - Mon, Nov 9

6:00 am - 8:15 pmONT Ontario-SIN Singapore Changi

22h 15m1 stop San Francisco

10:10 am - 8:15 pmSIN Singapore Changi-ONT Ontario

26h 05m1 stop San Francisco

$873United Airlines

Tue, Nov 3 - Sat, Nov 7

10:50 pm - 1:05 pmONT Ontario-SIN Singapore Changi

22h 15m1 stop Taipei City Taiwan Taoyuan Intl

2:25 pm - 5:05 pmSIN Singapore Changi-ONT Ontario

18h 40m1 stop Taipei City Taiwan Taoyuan Intl

$969China Airlines

Tue, Feb 23 - Tue, Mar 2

10:50 pm - 12:40 amONT Ontario-SIN Singapore Changi

33h 50m1 stop Taipei City Taiwan Taoyuan Intl

2:00 am - 6:05 pmSIN Singapore Changi-ONT Ontario

31h 05m1 stop Taipei City Taiwan Taoyuan Intl

$990China Airlines

Sun, Jan 31 - Mon, Mar 22

9:45 pm - 1:25 pmONT Ontario-SIN Singapore Changi

23h 40m1 stop Taipei City Taiwan Taoyuan Intl

2:45 pm - 3:55 pmSIN Singapore Changi-ONT Ontario

17h 10m1 stop Taipei City Taiwan Taoyuan Intl

$1,080STARLUX Airlines

Fri, Jan 15 - Tue, Feb 16

9:45 pm - 1:25 pmONT Ontario-SIN Singapore Changi

23h 40m1 stop Taipei City Taiwan Taoyuan Intl

2:45 pm - 4:55 pmSIN Singapore Changi-ONT Ontario

17h 10m1 stop Taipei City Taiwan Taoyuan Intl

$1,091STARLUX Airlines

Mon, Feb 1 - Mon, Mar 15

Cheap last minute flights

Enter your travel dates to find the best prices.

6:07 am - 6:35 pmONT Ontario-SIN Singapore Changi

21h 28m1 stop San Francisco

10:10 am - 5:56 pmSIN Singapore Changi-ONT Ontario

23h 46m1 stop San Francisco

$873United Airlines

Sun, Oct 11 - Mon, Nov 16

8:03 am - 6:35 pmONT Ontario-SIN Singapore Changi

19h 32m1 stop San Francisco

8:45 am - 3:22 pmSIN Singapore Changi-ONT Ontario

21h 37m1 stop San Francisco

$873United Airlines

Tue, Oct 6 - Wed, Oct 14

8:03 am - 6:35 pmONT Ontario-SIN Singapore Changi

19h 32m1 stop San Francisco

8:45 am - 3:22 pmSIN Singapore Changi-ONT Ontario

21h 37m1 stop San Francisco

$873United Airlines

Wed, Oct 7 - Wed, Oct 14

12:10 am - 12:30 pmONT Ontario-SIN Singapore Changi

21h 20m1 stop Taipei City Taiwan Taoyuan Intl

2:00 am - 5:05 pmSIN Singapore Changi-ONT Ontario

31h 05m1 stop Taipei City Taiwan Taoyuan Intl

$1,084China Airlines

Sat, Oct 10 - Sun, Nov 15

12:10 am - 12:35 amONT Ontario-SIN Singapore Changi

33h 25m1 stop Taipei City Taiwan Taoyuan Intl

2:00 am - 5:05 pmSIN Singapore Changi-ONT Ontario

31h 05m1 stop Taipei City Taiwan Taoyuan Intl

$1,108China Airlines

Wed, Oct 7 - Sun, Nov 15

12:10 am - 12:35 amONT Ontario-SIN Singapore Changi

33h 25m1 stop Taipei City Taiwan Taoyuan Intl

2:00 am - 5:05 pmSIN Singapore Changi-ONT Ontario

31h 05m1 stop Taipei City Taiwan Taoyuan Intl

$1,108China Airlines

Wed, Oct 7 - Mon, Nov 16

12:10 am - 11:25 pmONT Ontario-SIN Singapore Changi

32h 15m2 stops Taipei City Taiwan Taoyuan Intl Manila Ninoy Aquino Intl

10:05 am - 6:00 pmSIN Singapore Changi-ONT Ontario

22h 55m2 stops Manila Ninoy Aquino Intl Taipei City Taiwan Taoyuan Intl

$1,134Multiple Airlines

Mon, Oct 5 - Thu, Oct 15

12:10 am - 11:25 pmONT Ontario-SIN Singapore Changi

32h 15m2 stops Taipei City Taiwan Taoyuan Intl Manila Ninoy Aquino Intl

12:35 am - 6:00 pmSIN Singapore Changi-ONT Ontario

32h 25m2 stops Manila Ninoy Aquino Intl Taipei City Taiwan Taoyuan Intl

$1,136Multiple Airlines

Mon, Oct 5 - Tue, Oct 13

11:30 pm - 12:40 pmONT Ontario-SIN Singapore Changi

22h 10m1 stop Taipei City Taiwan Taoyuan Intl

2:45 pm - 3:55 pmSIN Singapore Changi-ONT Ontario

17h 10m1 stop Taipei City Taiwan Taoyuan Intl

$1,146STARLUX Airlines

Sat, Oct 10 - Wed, Nov 18

11:30 pm - 12:40 pmONT Ontario-SIN Singapore Changi

22h 10m1 stop Taipei City Taiwan Taoyuan Intl

2:10 pm - 5:05 pmSIN Singapore Changi-ONT Ontario

17h 55m1 stop Taipei City Taiwan Taoyuan Intl

$1,192STARLUX Airlines

Sat, Oct 10 - Sat, Oct 17

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Delta flights from Ontario to Singapore

Our best Delta deals on Ontario to Singapore flight tickets

Delta

Oct 28

ONT6:20 amOntario

31h 40m

2 stops

SIN5:00 amSingapore Changi

Nov 10

SIN1:40 amSingapore Changi

30h 44m

2 stops

ONT4:24 pmOntario

$756

Delta

Oct 13

ONT1:35 pmOntario

43h 20m

2 stops

SIN11:55 pmSingapore Changi

Nov 9

SIN1:40 amSingapore Changi

30h 44m

2 stops

ONT4:24 pmOntario

$761

Delta

Oct 13

ONT6:00 amOntario

32h 00m

2 stops

SIN5:00 amSingapore Changi

Nov 12

SIN1:40 amSingapore Changi

38h 09m

2 stops

ONT11:49 pmOntario

$762

United Airlines flights from Ontario to Singapore

Our best United Airlines deals on Ontario to Singapore flight tickets

United Airlines

Oct 31

ONT6:00 amOntario

23h 15m

1 stop

SIN8:15 pmSingapore Changi

Nov 3

SIN10:10 amSingapore Changi

18h 19m

1 stop

ONT12:29 pmOntario

$873

United Airlines

Oct 22

ONT6:07 amOntario

21h 28m

1 stop

SIN6:35 pmSingapore Changi

Oct 27

SIN10:10 amSingapore Changi

20h 23m

1 stop

ONT3:33 pmOntario

$874

United Airlines

Oct 31

ONT1:29 pmOntario

26h 31m

2 stops

SIN7:00 amSingapore Changi

Nov 3

SIN10:10 amSingapore Changi

21h 23m

1 stop

ONT3:33 pmOntario

$878

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Wed 1/13

7:00 am-12:15 am

2 stops25h 15m

Singapore Changi

Mon 1/25

1:40 am-10:43 pm

2 stops37h 03m

$731

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Thu 1/28

7:00 am-12:15 am

2 stops25h 15m

Singapore Changi

Sun 2/14

10:30 pm-1:57 pm

2 stops31h 27m

$754

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Wed 1/27

3:30 pm-8:25 pm

2 stops36h 55m

Singapore Changi

Sun 2/14

10:30 pm-1:57 pm

2 stops31h 27m

$754

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Wed 10/28

6:00 am-8:15 pm

1 stop23h 15m

Singapore Changi

Thu 11/5

10:10 am-5:56 pm

1 stop23h 46m

$873

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Sun 11/1

6:00 am-8:15 pm

1 stop22h 15m

Singapore Changi

Mon 11/9

10:10 am-5:56 pm

1 stop23h 46m

$873

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Tue 11/3

6:00 am-8:15 pm

1 stop22h 15m

Singapore Changi

Sat 11/7

10:10 am-8:15 pm

1 stop26h 05m

$873

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Tue 2/23

10:50 pm-1:05 pm

1 stop22h 15m

Singapore Changi

Tue 3/2

2:25 pm-5:05 pm

1 stop18h 40m

$969

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Sun 1/31

10:50 pm-12:40 am

1 stop33h 50m

Singapore Changi

Mon 3/22

2:00 am-6:05 pm

1 stop31h 05m

$990

Quickest round-trip

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Fri 1/15

9:45 pm-1:25 pm

1 stop23h 40m

Singapore Changi

Tue 2/16

2:45 pm-3:55 pm

1 stop17h 10m

$1,080

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Mon 2/1

9:45 pm-1:25 pm

1 stop23h 40m

Singapore Changi

Mon 3/15

2:45 pm-4:55 pm

1 stop17h 10m

$1,091

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Singapore

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Singapore?

The month of September is, on average, the cheapest month to fly to Singapore from Ontario, with most prices found around $0. If you aren’t able to travel to Singapore during the month of September, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $0.

What is the cheapest day to depart on your flight to Singapore?

The cheapest day to depart from Ontario to Singapore is on a Sunday when prices can be found for as low as $831. The most expensive day to fly to Singapore is Friday, with ticket prices averaging around $938.

What is the cheapest time of day to depart on your flight to Singapore?

In the evening is the cheapest time of day to fly from Ontario to Singapore when you can find flight prices for as low as $873. Flying to Singapore in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,483 on average. Flights to Singapore from Ontario in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Ontario to Singapore flights?

You could potentially save up to 14% on your flight if you consider stops on a Ontario to Singapore flight.

When to book flights from Ontario to Singapore

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Singapore according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Singapore (ONT to SIN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Singapore

Best Price Found	$354
Fastest flight time	20h 15m
Direct flights	None

The best one-way flight to Singapore from Ontario in the past 72 hours is $354. The best round-trip flight deal from Ontario to Singapore found on momondo in the last 72 hours is $731.

The fastest flight from Ontario to Singapore takes 20h 15m

There are no direct flights from Ontario to Singapore. There are no popular flight routes from Ontario to Singapore.

Search flight deals

Frequently asked questions about flying from Ontario to Singapore

How far is Ontario to Singapore Changi by plane?
The straight-line distance from Ontario to Singapore Changi is 8797.3 mi. Typically, this will take 20h 15m by plane in normal conditions.
When did momondo last update prices for flights from Ontario Airport to Singapore Changi Airport?
Prices for flights from Ontario Airport to Singapore Changi Airport are updated daily.
How many operators does momondo search for flights from Ontario Airport to Singapore Changi Airport?
The number of operators available for flights from Ontario Airport to Singapore Changi Airport is 3 as of October 2026.
How old do you have to be to fly from Ontario Airport to Singapore Changi Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Singapore Changi Airport.
What documentation or ID do you need to fly to Singapore Changi Airport?
The necessary travel and health documents for your Singapore Changi Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Singapore?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ontario to Singapore is China Airlines (53% of total bookings). The next most popular airlines are United Airlines (32%) and STARLUX Airlines (15%).

Best airlines flying from Ontario to Singapore

Compare and see reviews for airlines that fly from Ontario to Singapore with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $783	Free Cancellation	Rating 7.4 10,289 reviews	Search United Airlines flights
China Airlines	PriceFrom $958	Free Cancellation	Rating 8.2 848 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $981	Free Cancellation	Rating 8.8 393 reviews	Search STARLUX Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Singapore?

It is quick and easy to find Ontario to Singapore flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Singapore that suits you.

Can I find flights from Ontario to Singapore with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Singapore flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Singapore?

momondo provides multiple filters to help you find the best flight to Singapore from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Singapore right now. Can momondo alert me if prices change?

Price alerts on flights to Singapore from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.