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Cheap flights from California to Singapore from $312

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to Singapore departing on 1/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:30 am - 12:10 am
ONT
-
SIN
24h 40m2 stops
Delta Logo
1:35 am - 10:44 pm
SIN
-
ONT
37h 09m2 stops
$633Delta
Mon, Jan 26 - Tue, Feb 3
Delta Logo
3:30 pm - 8:25 pm
ONT
-
SIN
60h 55m2 stops
Delta Logo
1:35 am - 10:44 pm
SIN
-
ONT
37h 09m2 stops
$639Delta
Thu, Jan 22 - Fri, Feb 6
Asiana Airlines Logo
11:50 pm - 9:55 pm
SFO
-
SIN
30h 05m1 stop
Asiana Airlines Logo
11:10 pm - 3:00 pm
SIN
-
SFO
30h 50m1 stop
$639Asiana Airlines
Mon, Mar 2 - Tue, Mar 24
United Airlines Logo
10:35 am - 8:15 pm
SFO
-
SIN
17h 40mnonstop
United Airlines Logo
10:10 am - 9:00 am
SIN
-
SFO
14h 50mnonstop
$641United Airlines
Wed, Jan 28 - Sun, Feb 8
United Airlines Logo
10:35 pm - 8:00 am
SFO
-
SIN
17h 25mnonstop
United Airlines Logo
10:10 am - 9:00 am
SIN
-
SFO
14h 50mnonstop
$642United Airlines
Sun, Jan 11 - Sat, Jan 24
Air India Logo
4:30 pm - 7:05 pm
SFO
-
SIN
34h 35m2 stops
Air India Logo
8:00 pm - 8:50 pm
SIN
-
SFO
40h 50m2 stops
$643Air India
Mon, Feb 9 - Tue, Feb 24
Singapore Airlines Logo
9:40 am - 7:05 pm
SFO
-
SIN
17h 25mnonstop
Singapore Airlines Logo
9:15 am - 7:50 am
SIN
-
SFO
14h 35mnonstop
$644Singapore Airlines
Tue, Feb 10 - Tue, Mar 3
Singapore Airlines Logo
9:40 am - 7:05 pm
SFO
-
SIN
17h 25mnonstop
Singapore Airlines Logo
9:15 am - 7:50 am
SIN
-
SFO
14h 35mnonstop
$646Singapore Airlines
Mon, Feb 9 - Tue, Feb 24
Asiana Airlines Logo
11:50 pm - 9:55 pm
SFO
-
SIN
30h 05m1 stop
Asiana Airlines Logo
11:10 pm - 2:00 pm
SIN
-
SFO
30h 50m1 stop
$647Asiana Airlines
Sun, Jan 11 - Sat, Jan 24
Air India Logo
4:30 pm - 6:30 pm
SFO
-
SIN
34h 00m2 stops
Air India Logo
8:00 pm - 2:30 pm
SIN
-
SFO
34h 30m2 stops
$649Air India
Wed, Jan 28 - Tue, Feb 10

Delta flights from California to Singapore

Our best Delta deals on California to Singapore flight tickets
Delta
Jan 26
ONT7:30 amOntario
24h 40m
2 stops
SIN12:10 amSingapore Changi
Feb 3
SIN1:35 amSingapore Changi
37h 09m
2 stops
ONT10:44 pmOntario
$633
Find similar
Delta
Jan 22
ONT3:30 pmOntario
60h 55m
2 stops
SIN8:25 pmSingapore Changi
Feb 6
SIN1:35 amSingapore Changi
37h 09m
2 stops
ONT10:44 pmOntario
$639
Find similar
Delta
Feb 16
ONT7:30 amOntario
24h 40m
2 stops
SIN12:10 amSingapore Changi
Feb 23
SIN10:40 amSingapore Changi
27h 57m
2 stops
ONT10:37 pmOntario
$648
Find similar

China Airlines flights from California to Singapore

Our best China Airlines deals on California to Singapore flight tickets
China Airlines
May 8
ONT12:10 amOntario
21h 25m
1 stop
SIN12:35 pmSingapore Changi
May 24
SIN1:45 pmSingapore Changi
19h 15m
1 stop
ONT6:00 pmOntario
$962
Find similar
China Airlines
Apr 5
ONT12:10 amOntario
21h 25m
1 stop
SIN12:35 pmSingapore Changi
Apr 25
SIN1:45 pmSingapore Changi
19h 15m
1 stop
ONT6:00 pmOntario
$994
Find similar
China Airlines
Apr 7
ONT12:10 amOntario
21h 25m
1 stop
SIN12:35 pmSingapore Changi
Apr 24
SIN1:45 pmSingapore Changi
19h 15m
1 stop
ONT6:00 pmOntario
$1,004
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from California to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from California to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 1/26

7:30 am-12:10 am

2 stops24h 40m

Singapore Changi

Tue 2/3

1:35 am-10:44 pm

2 stops37h 09m

$633

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 1/22

3:30 pm-8:25 pm

2 stops60h 55m

Singapore Changi

Fri 2/6

1:35 am-10:44 pm

2 stops37h 09m

$639

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Mon 3/2

11:50 pm-9:55 pm

1 stop30h 05m

Singapore Changi

Tue 3/24

11:10 pm-3:00 pm

1 stop30h 50m

$639

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Wed 1/28

10:35 am-8:15 pm

Nonstop17h 40m

Singapore Changi

Sun 2/8

10:10 am-9:00 am

Nonstop14h 50m

$641

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sun 1/11

10:35 pm-8:00 am

Nonstop17h 25m

Singapore Changi

Sat 1/24

10:10 am-9:00 am

Nonstop14h 50m

$642

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Mon 2/9

4:30 pm-7:05 pm

2 stops34h 35m

Singapore Changi

Tue 2/24

8:00 pm-8:50 pm

2 stops40h 50m

$643

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Tue 2/10

9:40 am-7:05 pm

Nonstop17h 25m

Singapore Changi

Tue 3/3

9:15 am-7:50 am

Nonstop14h 35m

$644

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Mon 2/9

9:40 am-7:05 pm

Nonstop17h 25m

Singapore Changi

Tue 2/24

9:15 am-7:50 am

Nonstop14h 35m

$646

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sun 1/11

11:50 pm-9:55 pm

1 stop30h 05m

Singapore Changi

Sat 1/24

11:10 pm-2:00 pm

1 stop30h 50m

$647

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Wed 1/28

4:30 pm-6:30 pm

2 stops34h 00m

Singapore Changi

Tue 2/10

8:00 pm-2:30 pm

2 stops34h 30m

$649

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Singapore from

How to get the cheapest flight ticket from California 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

What is the cheapest month to fly to Singapore?

The month of September is, on average, the cheapest month to fly to Singapore from California, with most prices found around $747. If you aren’t able to travel to Singapore during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $751.

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

The cheapest day to depart from California to Singapore is on a Monday when prices can be found for as low as $845. The most expensive day to fly to Singapore is Saturday, with ticket prices averaging around $1,048.

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 California to Singapore when you can find flight prices for as low as $922. 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 $1,303 on average. Flights to Singapore from California in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest California to Singapore Changi flight route?

Fly from San Francisco to Singapore Changi for the best California - Singapore Changi flight prices

How far in advance should I book a flight to Singapore?

You are more likely to see cheaper flights to Singapore from California when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $927 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from California for as low as $811 on momondo.

What cabin class options are available on California to Singapore Changi flights?

There are 3 cabin classes available to choose from on California to Singapore Changi flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on California to Singapore flights?

No. A direct flight is the cheapest option for a flight between California to Singapore.

Cheap California to Singapore flight deals and tips

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

Best Price Found

$339

Fastest flight time

16h 25m

Direct flights

Every day

Airports in Singapore

1 airport
The best one-way flight to Singapore from California in the past 72 hours is $339. The best round-trip flight deal from California to Singapore found on momondo in the last 72 hours is $660.
The fastest flight from California to Singapore takes 16h 25m
Direct flights go from California to Singapore every day.
There is 1 airport in Singapore. From California there are direct flights to Singapore Changi (SIN).
Search flight deals

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

    Prices for flights from California to Singapore Changi Airport are refreshed on a daily basis.

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

  • How old do you have to be to fly from California 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 California to Singapore Changi Airport.

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

    The required travel and health documents for your Singapore Changi Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Singapore Changi Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from California to Singapore?

Best airlines flying from California to Singapore

Compare and see reviews for airlines that fly from California to Singapore with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $400Free CancellationRating
7.4
9,094 reviews
Search United Airlines flights
American AirlinesPriceFrom $490Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
Singapore AirlinesPriceFrom $573Free CancellationRating
8.1
1,412 reviews
Search Singapore Airlines flights
China EasternPriceFrom $582Free CancellationRating
7.2
178 reviews
Search China Eastern flights
Air IndiaPriceFrom $588Free CancellationRating
5.5
2,947 reviews
Search Air India flights
XiamenAirPriceFrom $598Free CancellationRating
6.6
41 reviews
Search XiamenAir flights
Philippine AirlinesPriceFrom $602Free CancellationRating
7.3
941 reviews
Search Philippine Airlines flights
Asiana AirlinesPriceFrom $654Free CancellationRating
8.2
492 reviews
Search Asiana Airlines flights
Air ChinaPriceFrom $656Free CancellationRating
7.2
127 reviews
Search Air China flights
ANAPriceFrom $660Free CancellationRating
8.4
1,021 reviews
Search ANA flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from California to Singapore for you.

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

Yes. momondo enables you to select and highlight flights to Singapore from California with this policy.

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

Once all potential California to Singapore flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of California to Singapore flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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