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 65% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 15 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.

$413 Cheap Flights from Ontario to Singapore in 2026

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

10:30 pm - 10:48 pmSIN Singapore Changi-ONT Ontario

40h 18m2 stops Incheon Intl Salt Lake City

$836Delta

Tue, Feb 2 - Sat, Feb 13

7:00 am - 8:25 pmONT Ontario-SIN Singapore Changi

45h 25m2 stops Seattle/Tacoma Intl Incheon Intl

1:35 am - 10:43 pmSIN Singapore Changi-ONT Ontario

37h 08m2 stops Incheon Intl Seattle/Tacoma Intl

$836Delta

Fri, Jan 29 - Sun, Feb 14

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

30h 00m2 stops Seattle/Tacoma Intl Incheon Intl

1:35 am - 10:43 pmSIN Singapore Changi-ONT Ontario

37h 08m2 stops Incheon Intl Seattle/Tacoma Intl

$836Delta

Tue, Feb 2 - Mon, Feb 15

1:18 pm - 6:35 pmONT Ontario-SIN Singapore Changi

38h 17m2 stops Denver Intl San Francisco

8:35 pm - 8:01 pmSIN Singapore Changi-ONT Ontario

38h 26m1 stop San Francisco

$865United Airlines

Sat, Sep 19 - Tue, Sep 22

1:56 pm - 6:35 pmONT Ontario-SIN Singapore Changi

37h 39m1 stop San Francisco

8:35 pm - 8:01 pmSIN Singapore Changi-ONT Ontario

38h 26m1 stop San Francisco

$865United Airlines

Sat, Sep 19 - Tue, Sep 22

10:50 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

$952China Airlines

Wed, Jan 20 - Mon, Jan 25

10:50 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

$961China Airlines

Mon, Feb 8 - Wed, Feb 10

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

$966China Airlines

Mon, Jan 11 - Mon, Jan 18

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

$1,237STARLUX Airlines

Fri, Nov 13 - Wed, Dec 16

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

$1,290STARLUX Airlines

Fri, Jan 1 - Mon, Feb 1

Cheap last minute flights

Enter your travel dates to find the best prices.

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

32h 00m2 stops Seattle/Tacoma Intl Incheon Intl

1:35 am - 11:48 pmSIN Singapore Changi-ONT Ontario

38h 13m2 stops Incheon Intl Salt Lake City

$836Delta

Sun, Sep 13 - Mon, Mar 1

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

32h 00m2 stops Salt Lake City Incheon Intl

10:00 pm - 11:55 pmSIN Singapore Changi-ONT Ontario

40h 55m2 stops Incheon Intl Salt Lake City

$836Delta

Sun, Sep 13 - Sun, Oct 18

6:00 am - 11:55 pmONT Ontario-SIN Singapore Changi

26h 55m2 stops Seattle/Tacoma Intl Incheon Intl

10:00 pm - 11:55 pmSIN Singapore Changi-ONT Ontario

40h 55m2 stops Incheon Intl Salt Lake City

$836Delta

Wed, Sep 9 - Sun, Oct 18

1:56 pm - 6:15 amONT Ontario-SIN Singapore Changi

25h 19m1 stop San Francisco

8:45 am - 12:12 pmSIN Singapore Changi-ONT Ontario

18h 27m1 stop San Francisco

$874United Airlines

Tue, Sep 8 - Wed, Sep 16

6:08 am - 6:35 pmONT Ontario-SIN Singapore Changi

21h 27m1 stop San Francisco

8:45 am - 5:46 pmSIN Singapore Changi-ONT Ontario

24h 01m1 stop San Francisco

$874United Airlines

Fri, Sep 11 - Sat, Oct 17

6:08 am - 6:35 pmONT Ontario-SIN Singapore Changi

21h 27m1 stop San Francisco

8:45 am - 5:46 pmSIN Singapore Changi-ONT Ontario

24h 01m1 stop San Francisco

$874United Airlines

Sat, Sep 12 - Sat, Oct 17

12:45 am - 12:30 pmONT Ontario-SIN Singapore Changi

20h 45m1 stop Taipei City Taiwan Taoyuan Intl

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

19h 05m1 stop Taipei City Taiwan Taoyuan Intl

$1,043China Airlines

Thu, Sep 10 - Sat, Oct 17

12:45 am - 12:30 pmONT Ontario-SIN Singapore Changi

20h 45m1 stop Taipei City Taiwan Taoyuan Intl

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

19h 05m1 stop Taipei City Taiwan Taoyuan Intl

$1,043China Airlines

Mon, Sep 7 - Wed, Sep 30

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

$2,366STARLUX Airlines

Sat, Sep 12 - Sat, Oct 17

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

$3,042STARLUX Airlines

Fri, Sep 11 - Sat, Oct 17

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United Airlines flights from Ontario to Singapore

Our best United Airlines deals on Ontario to Singapore flight tickets

United Airlines

Sep 19

ONT1:18 pmOntario

38h 17m

2 stops

SIN6:35 pmSingapore Changi

Sep 22

SIN8:45 amSingapore Changi

27h 08m

2 stops

ONT8:53 pmOntario

$865

United Airlines

Feb 5

ONT6:00 amOntario

22h 15m

1 stop

SIN8:15 pmSingapore Changi

Feb 26

SIN10:10 amSingapore Changi

23h 37m

1 stop

ONT5:47 pmOntario

$874

United Airlines

Sep 8

ONT5:00 amOntario

34h 15m

2 stops

SIN6:15 amSingapore Changi

Sep 16

SIN8:45 amSingapore Changi

26h 16m

1 stop

ONT8:01 pmOntario

$878

China Airlines flights from Ontario to Singapore

Our best China Airlines deals on Ontario to Singapore flight tickets

China Airlines

Jan 20

ONT10:50 pmOntario

22h 15m

1 stop

SIN1:05 pmSingapore Changi

Jan 25

SIN2:00 amSingapore Changi

31h 05m

1 stop

ONT5:05 pmOntario

$952

China Airlines

Oct 16

ONT12:10 amOntario

21h 20m

1 stop

SIN12:30 pmSingapore Changi

Oct 24

SIN1:55 pmSingapore Changi

19h 05m

1 stop

ONT6:00 pmOntario

$959

China Airlines

Feb 8

ONT10:50 pmOntario

22h 15m

1 stop

SIN1:05 pmSingapore Changi

Feb 10

SIN2:00 amSingapore Changi

31h 05m

1 stop

ONT5:05 pmOntario

$961

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Tue 2/2

7:00 am-5:00 am

2 stops30h 00m

Singapore Changi

Sat 2/13

10:30 pm-10:48 pm

2 stops40h 18m

$836

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Fri 1/29

7:00 am-8:25 pm

2 stops45h 25m

Singapore Changi

Sun 2/14

1:35 am-10:43 pm

2 stops37h 08m

$836

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Tue 2/2

7:00 am-5:00 am

2 stops30h 00m

Singapore Changi

Mon 2/15

1:35 am-10:43 pm

2 stops37h 08m

$836

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Sat 9/19

1:18 pm-6:35 pm

2 stops38h 17m

Singapore Changi

Tue 9/22

8:35 pm-8:01 pm

1 stop38h 26m

$865

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Sat 9/19

1:56 pm-6:35 pm

1 stop37h 39m

Singapore Changi

Tue 9/22

8:35 pm-8:01 pm

1 stop38h 26m

$865

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Wed 1/20

10:50 pm-1:05 pm

1 stop22h 15m

Singapore Changi

Mon 1/25

2:00 am-5:05 pm

1 stop31h 05m

$952

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Mon 2/8

10:50 pm-1:05 pm

1 stop22h 15m

Singapore Changi

Wed 2/10

2:00 am-5:05 pm

1 stop31h 05m

$961

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Mon 1/11

10:50 pm-1:05 pm

1 stop22h 15m

Singapore Changi

Mon 1/18

2:25 pm-5:05 pm

1 stop18h 40m

$966

Quickest round-trip

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Fri 11/13

9:45 pm-1:25 pm

1 stop23h 40m

Singapore Changi

Wed 12/16

2:45 pm-3:55 pm

1 stop17h 10m

$1,237

OntarioSingapore

ONT Ontario - SIN Singapore Changi

ONTSIN

Ontario

Fri 1/1

9:45 pm-1:25 pm

1 stop23h 40m

Singapore Changi

Mon 2/1

2:45 pm-3:55 pm

1 stop17h 10m

$1,290

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 October is, on average, the cheapest month to fly to Singapore from Ontario, with most prices found around $887. If you aren’t able to travel to Singapore during the month of October, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $968.

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 $827. The most expensive day to fly to Singapore is Friday, with ticket prices averaging around $932.

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 $870. 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 8% 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	$413
Fastest flight time	22h 15m
Direct flights	None

The best one-way flight to Singapore from Ontario in the past 72 hours is $413. The best round-trip flight deal from Ontario to Singapore found on momondo in the last 72 hours is $836.

The fastest flight from Ontario to Singapore takes 22h 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 22h 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 (27%) and STARLUX Airlines (18%).

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 10,181 reviews	Search United Airlines flights
STARLUX Airlines	PriceFrom $887	Free Cancellation	Rating 8.7 376 reviews	Search STARLUX Airlines flights
China Airlines	PriceFrom $964	Free Cancellation	Rating 8.3 844 reviews	Search China 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.