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 69% 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.

$379 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 - 5:00 amONT Ontario-SIN Singapore Changi

30h 00m2 stops Seattle/Tacoma Intl Incheon Intl

1:40 am - 4:12 pmSIN Singapore Changi-ONT Ontario

30h 32m2 stops Incheon Intl Salt Lake City

$799Delta

Thu, Feb 18 - Mon, Mar 1

7:00 am - 5:00 amONT Ontario-SIN Singapore Changi

30h 00m2 stops Seattle/Tacoma Intl Incheon Intl

1:40 am - 4:12 pmSIN Singapore Changi-ONT Ontario

30h 32m2 stops Incheon Intl Salt Lake City

$799Delta

Wed, Feb 17 - Mon, Mar 1

6:00 am - 12:15 amONT Ontario-SIN Singapore Changi

26h 15m2 stops Salt Lake City Incheon Intl

1:40 am - 4:12 pmSIN Singapore Changi-ONT Ontario

30h 32m2 stops Incheon Intl Salt Lake City

$799Delta

Thu, Jan 21 - Mon, Mar 1

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

22h 15m1 stop San Francisco

10:10 am - 5:46 pmSIN Singapore Changi-ONT Ontario

23h 36m1 stop San Francisco

$924United Airlines

Wed, Dec 2 - Mon, Dec 21

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

22h 15m1 stop San Francisco

10:10 am - 3:35 pmSIN Singapore Changi-ONT Ontario

21h 25m1 stop San Francisco

$924United Airlines

Wed, Nov 25 - Tue, Dec 8

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

22h 15m1 stop San Francisco

10:10 am - 3:35 pmSIN Singapore Changi-ONT Ontario

21h 25m1 stop San Francisco

$924United Airlines

Tue, Nov 24 - Tue, Dec 8

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

$1,129China Airlines

Mon, Feb 22 - Sun, Feb 28

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

$1,143China Airlines

Tue, Jan 12 - Fri, Jan 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

$1,182STARLUX Airlines

Wed, Jan 20 - Wed, Feb 10

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

$1,182STARLUX Airlines

Fri, Mar 12 - Sat, Mar 20

Cheap last minute flights

Enter your travel dates to find the best prices.

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

$924United Airlines

Mon, Nov 2 - Mon, Nov 9

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

22h 15m1 stop San Francisco

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

21h 23m1 stop San Francisco

$924United Airlines

Sun, Nov 1 - Thu, Nov 12

5:00 am - 12:45 amONT Ontario-SIN Singapore Changi

27h 45m2 stops Denver Intl Tokyo Narita

10:10 am - 12:29 pmSIN Singapore Changi-ONT Ontario

18h 19m1 stop San Francisco

$936United Airlines

Mon, Nov 2 - Mon, Nov 9

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

22h 15m1 stop San Francisco

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

21h 23m1 stop San Francisco

$938Lufthansa

Mon, Nov 2 - Mon, Nov 9

10:45 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

$1,194STARLUX Airlines

Sat, Oct 31 - Fri, Nov 6

11:50 pm - 1:05 pmONT Ontario-SIN Singapore Changi

22h 15m1 stop Taipei City Taiwan Taoyuan Intl

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

31h 05m1 stop Taipei City Taiwan Taoyuan Intl

$1,197China Airlines

Fri, Oct 30 - Tue, Nov 3

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

$1,208China Airlines

Sun, Nov 1 - Thu, Nov 12

12:01 pm - 10:25 amONT Ontario-SIN Singapore Changi

30h 24m2 stops San Francisco Manila Ninoy Aquino Intl

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

18h 40m1 stop Taipei City Taiwan Taoyuan Intl

$1,228Multiple Airlines

Sun, Nov 1 - Thu, Nov 12

4:09 pm - 12:50 amONT Ontario-SIN Singapore Changi

40h 41m2 stops Seattle/Tacoma Intl Tokyo Narita

8:15 am - 6:17 pmSIN Singapore Changi-ONT Ontario

26h 02m2 stops Tokyo Narita Seattle/Tacoma Intl

$1,527Alaska Airlines

Mon, Nov 2 - Mon, Nov 9

10:45 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

$3,107STARLUX Airlines

Fri, Oct 30 - Wed, Nov 4

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Delta flights from Ontario to Singapore

Our best Delta deals on Ontario to Singapore flight tickets

Delta

Jan 21

ONT6:00 amOntario

26h 15m

2 stops

SIN12:15 amSingapore Changi

Mar 1

SIN1:40 amSingapore Changi

30h 32m

2 stops

ONT4:12 pmOntario

$799

Delta

Jan 21

ONT6:00 amOntario

26h 15m

2 stops

SIN12:15 amSingapore Changi

Feb 25

SIN1:40 amSingapore Changi

30h 32m

2 stops

ONT4:12 pmOntario

$804

Delta

Nov 22

ONT6:00 amOntario

31h 00m

2 stops

SIN5:00 amSingapore Changi

Dec 8

SIN10:30 pmSingapore Changi

40h 29m

2 stops

ONT10:59 pmOntario

$807

China Airlines flights from Ontario to Singapore

Our best China Airlines deals on Ontario to Singapore flight tickets

China Airlines

Feb 17

ONT10:50 pmOntario

22h 15m

1 stop

SIN1:05 pmSingapore Changi

Feb 28

SIN2:00 amSingapore Changi

31h 05m

1 stop

ONT5:05 pmOntario

$1,132

China Airlines

Jan 12

ONT10:50 pmOntario

22h 15m

1 stop

SIN1:05 pmSingapore Changi

Jan 22

SIN2:25 pmSingapore Changi

18h 40m

1 stop

ONT5:05 pmOntario

$1,143

China Airlines

Jan 31

ONT10:50 pmOntario

33h 50m

1 stop

SIN12:40 amSingapore Changi

Mar 29

SIN2:00 amSingapore Changi

31h 00m

1 stop

ONT6:00 pmOntario

$1,146

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Thu 2/18

7:00 am-5:00 am

2 stops30h 00m

Singapore Changi

Mon 3/1

1:40 am-4:12 pm

2 stops30h 32m

$799

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Wed 2/17

7:00 am-5:00 am

2 stops30h 00m

Singapore Changi

Mon 3/1

1:40 am-4:12 pm

2 stops30h 32m

$799

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Thu 1/21

6:00 am-12:15 am

2 stops26h 15m

Singapore Changi

Mon 3/1

1:40 am-4:12 pm

2 stops30h 32m

$799

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Wed 12/2

6:00 am-8:15 pm

1 stop22h 15m

Singapore Changi

Mon 12/21

10:10 am-5:46 pm

1 stop23h 36m

$924

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Wed 11/25

6:00 am-8:15 pm

1 stop22h 15m

Singapore Changi

Tue 12/8

10:10 am-3:35 pm

1 stop21h 25m

$924

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Tue 11/24

6:00 am-8:15 pm

1 stop22h 15m

Singapore Changi

Tue 12/8

10:10 am-3:35 pm

1 stop21h 25m

$924

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Mon 2/22

10:50 pm-1:05 pm

1 stop22h 15m

Singapore Changi

Sun 2/28

2:25 pm-5:05 pm

1 stop18h 40m

$1,129

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Tue 1/12

10:50 pm-1:05 pm

1 stop22h 15m

Singapore Changi

Fri 1/22

2:25 pm-5:05 pm

1 stop18h 40m

$1,143

Quickest round-trip

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Wed 1/20

9:45 pm-1:25 pm

1 stop23h 40m

Singapore Changi

Wed 2/10

2:45 pm-3:55 pm

1 stop17h 10m

$1,182

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Fri 3/12

9:45 pm-1:25 pm

1 stop23h 40m

Singapore Changi

Sat 3/20

2:45 pm-4:55 pm

1 stop17h 10m

$1,182

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 typical price of a round-trip flight between Ontario and Singapore?

Prices are currently low for flights on this route.

Typical prices usually range from $967 to $993.
The lowest price recently found on this route was $799.

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 $828. The most expensive day to fly to Singapore is Friday, with ticket prices averaging around $935.

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 $867. 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 3% 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	$379
Fastest flight time	20h 52m
Direct flights	None

The best one-way flight to Singapore from Ontario in the past 72 hours is $379. The best round-trip flight deal from Ontario to Singapore found on momondo in the last 72 hours is $799.

The fastest flight from Ontario to Singapore takes 20h 52m

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 52m 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 (49% of total bookings). The next most popular airlines are United Airlines (37%) 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 7.3 10,443 reviews	Search United Airlines flights
China Airlines	PriceFrom $964	Free Cancellation	Rating 8.3 853 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $981	Free Cancellation	Rating 8.7 403 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.