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

Delta, 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 September 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.

$411 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.

6:20 am - 5:00 amONT Ontario-SIN Singapore Changi

30h 40m2 stops Seattle/Tacoma Intl Incheon Intl

1:40 am - 4:24 pmSIN Singapore Changi-ONT Ontario

30h 44m2 stops Incheon Intl Salt Lake City

$768Delta

Sun, Nov 1 - Tue, Nov 10

6:00 am - 8:25 pmONT Ontario-SIN Singapore Changi

46h 25m2 stops Salt Lake City Incheon Intl

1:40 am - 5:17 pmSIN Singapore Changi-ONT Ontario

31h 37m2 stops Incheon Intl Seattle/Tacoma Intl

$768Delta

Sat, Feb 27 - Thu, Mar 11

6:00 am - 8:25 pmONT Ontario-SIN Singapore Changi

46h 25m2 stops Salt Lake City Incheon Intl

10:30 pm - 5:15 pmSIN Singapore Changi-ONT Ontario

34h 45m2 stops Incheon Intl Seattle/Tacoma Intl

$768Delta

Thu, Nov 26 - Sun, Dec 13

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

19h 32m1 stop San Francisco

10:10 am - 3:33 pmSIN Singapore Changi-ONT Ontario

20h 23m1 stop San Francisco

$864United Airlines

Wed, Oct 21 - Wed, Oct 28

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

19h 32m1 stop San Francisco

10:10 am - 3:33 pmSIN Singapore Changi-ONT Ontario

20h 23m1 stop San Francisco

$873United Airlines

Tue, Oct 13 - Tue, Oct 27

1:33 pm - 8:00 amONT Ontario-SIN Singapore Changi

26h 27m1 stop San Francisco

10:10 am - 3:27 pmSIN Singapore Changi-ONT Ontario

20h 17m1 stop San Francisco

$873United Airlines

Tue, Mar 9 - Tue, Mar 16

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

33h 50m1 stop Taipei City Taiwan Taoyuan Intl

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

18h 40m1 stop Taipei City Taiwan Taoyuan Intl

$954China Airlines

Mon, Jan 11 - Sun, Jan 24

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

33h 50m1 stop Taipei City Taiwan Taoyuan Intl

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

18h 40m1 stop Taipei City Taiwan Taoyuan Intl

$979China Airlines

Sat, Jan 30 - Sat, Feb 13

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

Wed, Feb 3 - Mon, Mar 15

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

23h 40m1 stop Taipei City Taiwan Taoyuan Intl

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

18h 05m1 stop Taipei City Taiwan Taoyuan Intl

$1,111STARLUX Airlines

Wed, Dec 2 - Wed, Apr 21

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

8:35 pm - 12:29 pmSIN Singapore Changi-ONT Ontario

30h 54m1 stop San Francisco

$879United Airlines

Mon, Oct 5 - Sat, Oct 24

9:25 am - 12:45 amONT Ontario-SIN Singapore Changi

24h 20m2 stops San Francisco Tokyo Narita

8:45 am - 8:31 pmSIN Singapore Changi-ONT Ontario

26h 46m1 stop San Francisco

$885United Airlines

Fri, Oct 2 - Wed, Oct 7

6:00 am - 12:45 amONT Ontario-SIN Singapore Changi

27h 45m2 stops San Francisco Tokyo Narita

8:45 am - 8:58 pmSIN Singapore Changi-ONT Ontario

27h 13m2 stops San Francisco Denver Intl

$890United Airlines

Fri, Oct 2 - Wed, Oct 7

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

21h 20m1 stop Taipei City Taiwan Taoyuan Intl

1:55 pm - 6:00 pmSIN Singapore Changi-ONT Ontario

19h 05m1 stop Taipei City Taiwan Taoyuan Intl

$1,062China Airlines

Sun, Oct 4 - Sat, Oct 10

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

21h 20m1 stop Taipei City Taiwan Taoyuan Intl

1:55 pm - 6:00 pmSIN Singapore Changi-ONT Ontario

19h 05m1 stop Taipei City Taiwan Taoyuan Intl

$1,079China Airlines

Sat, Oct 3 - Fri, Oct 9

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

33h 25m1 stop Taipei City Taiwan Taoyuan Intl

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

31h 00m1 stop Taipei City Taiwan Taoyuan Intl

$1,082China Airlines

Thu, Oct 1 - Tue, Oct 6

12:10 am - 11:35 pmONT Ontario-SIN Singapore Changi

32h 25m2 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

$1,127Multiple Airlines

Sun, Oct 4 - Sat, Oct 24

12:10 am - 9:20 pmONT Ontario-SIN Singapore Changi

30h 10m2 stops Taipei City Taiwan Taoyuan Intl Ho Chi Minh City

9:20 pm - 6:00 pmSIN Singapore Changi-ONT Ontario

35h 40m3 stops Kuala Lumpur Intl Ho Chi Minh City Taipei City Taiwan Taoyuan Intl

$1,143Multiple Airlines

Sun, Oct 4 - Sat, Oct 10

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

22h 10m1 stop Taipei City Taiwan Taoyuan Intl

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

17h 10m1 stop Taipei City Taiwan Taoyuan Intl

$3,005STARLUX Airlines

Mon, Oct 5 - Mon, Oct 26

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

22h 10m1 stop Taipei City Taiwan Taoyuan Intl

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

18h 05m1 stop Taipei City Taiwan Taoyuan Intl

$17,344STARLUX Airlines

Fri, Oct 2 - Fri, Oct 16

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Korean Air flights from Ontario to Singapore

Our best Korean Air deals on Ontario to Singapore flight tickets

Korean Air

Nov 15

ONT7:00 amOntario

30h 00m

2 stops

SIN5:00 amSingapore Changi

Dec 8

SIN10:30 amSingapore Changi

28h 29m

2 stops

ONT10:59 pmOntario

$773

Korean Air

Feb 5

ONT7:00 amOntario

25h 15m

2 stops

SIN12:15 amSingapore Changi

Mar 14

SIN1:40 amSingapore Changi

30h 37m

2 stops

ONT5:17 pmOntario

$774

Korean Air

Jan 5

ONT3:30 pmOntario

36h 55m

2 stops

SIN8:25 pmSingapore Changi

Apr 30

SIN1:25 amSingapore Changi

30h 52m

2 stops

ONT5:17 pmOntario

$777

China Airlines flights from Ontario to Singapore

Our best China Airlines deals on Ontario to Singapore flight tickets

China Airlines

Jan 11

ONT10:50 pmOntario

33h 50m

1 stop

SIN12:40 amSingapore Changi

Jan 24

SIN2:25 pmSingapore Changi

18h 40m

1 stop

ONT5:05 pmOntario

$954

China Airlines

Jan 30

ONT10:50 pmOntario

33h 50m

1 stop

SIN12:40 amSingapore Changi

Feb 13

SIN2:25 pmSingapore Changi

18h 40m

1 stop

ONT5:05 pmOntario

$979

China Airlines

Jan 30

ONT10:50 pmOntario

33h 50m

1 stop

SIN12:40 amSingapore Changi

Feb 14

SIN2:25 pmSingapore Changi

18h 40m

1 stop

ONT5:05 pmOntario

$983

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Sun 11/1

6:20 am-5:00 am

2 stops30h 40m

Singapore Changi

Tue 11/10

1:40 am-4:24 pm

2 stops30h 44m

$768

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Sat 2/27

6:00 am-8:25 pm

2 stops46h 25m

Singapore Changi

Thu 3/11

1:40 am-5:17 pm

2 stops31h 37m

$768

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Thu 11/26

6:00 am-8:25 pm

2 stops46h 25m

Singapore Changi

Sun 12/13

10:30 pm-5:15 pm

2 stops34h 45m

$768

Quickest round-trip

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Wed 10/21

8:03 am-6:35 pm

1 stop19h 32m

Singapore Changi

Wed 10/28

10:10 am-3:33 pm

1 stop20h 23m

$864

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Tue 10/13

8:03 am-6:35 pm

1 stop19h 32m

Singapore Changi

Tue 10/27

10:10 am-3:33 pm

1 stop20h 23m

$873

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Tue 3/9

1:33 pm-8:00 am

1 stop26h 27m

Singapore Changi

Tue 3/16

10:10 am-3:27 pm

1 stop20h 17m

$873

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Mon 1/11

10:50 pm-12:40 am

1 stop33h 50m

Singapore Changi

Sun 1/24

2:25 pm-5:05 pm

1 stop18h 40m

$954

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Sat 1/30

10:50 pm-12:40 am

1 stop33h 50m

Singapore Changi

Sat 2/13

2:25 pm-5:05 pm

1 stop18h 40m

$979

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Wed 2/3

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

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Wed 12/2

9:45 pm-1:25 pm

1 stop23h 40m

Singapore Changi

Wed 4/21

2:00 pm-5:05 pm

1 stop18h 05m

$1,111

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 $1,651 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	$411
Fastest flight time	20h 15m
Direct flights	None

The best one-way flight to Singapore from Ontario in the past 72 hours is $411. The best round-trip flight deal from Ontario to Singapore found on momondo in the last 72 hours is $768.

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 September 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 (55% of total bookings). The next most popular airlines are United Airlines (30%) 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 10,256 reviews	Search United Airlines flights
China Airlines	PriceFrom $964	Free Cancellation	Rating 8.3 847 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $981	Free Cancellation	Rating 8.7 387 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.