Singapore

$339+ Cheap flights from San Francisco (SFO) to Singapore (SIN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SIN
Jan 11 — Jan 181
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco to Singapore with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from San Francisco to Singapore Changi are usually found in September or October, booked 86 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap flight deals from San Francisco to Singapore

Cheapest flights from San Francisco to Singapore
Explore the most affordable flight options available from San Francisco to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This IEagle deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:25 pmSFO - SIN
2 stops36h 30mAir India
Mon 1/127:40 pmSIN - SFO
2 stops34h 50mAir India
Deal found 12/11$758
This Justfly.com deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:25 pmSFO - SIN
2 stops36h 30mAir India
Tue 1/138:00 pmSIN - SFO
2 stops34h 30mAir India
Deal found 12/11$767
This oojo deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/284:30 pmSFO - SIN
2 stops34h 00mAir India
Sun 2/88:00 pmSIN - SFO
1 stop32h 25mAir India
Deal found 12/11$768
This Justfly.com deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/299:40 amSFO - SIN
Nonstop17h 25mSingapore Airlines
Wed 2/49:15 amSIN - SFO
Nonstop14h 35mSingapore Airlines
Deal found 12/9$773
This United Airlines deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:35 amSFO - SIN
Nonstop17h 40mUnited Airlines
Wed 2/410:45 amSIN - SFO
1 stop20h 35mUnited Airlines
Deal found 12/9$785
This FlightHub deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2912:00 pmSFO - SIN
2 stops31h 40mChina Eastern
Wed 2/412:40 pmSIN - SFO
2 stops36h 20mChina Eastern
Deal found 12/9$798
This Justfly.com deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:25 pmSFO - SIN
2 stops36h 30mAir India
Tue 1/138:00 pmSIN - SFO
2 stops34h 30mAir India
Deal found 12/11$807
This Justfly.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/284:30 pmSFO - SIN
2 stops48h 45mAir India
Mon 1/127:40 pmSIN - SFO
2 stops34h 50mAir India
Deal found 12/10$812
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1110:50 amSFO - SIN
Nonstop17h 25mUnited Airlines
Wed 12/2410:20 pmSIN - SFO
Nonstop14h 55mUnited Airlines
Deal found 12/10$846
This Justfly.com deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:25 pmSFO - SIN
2 stops36h 30mAir India
Mon 1/1210:30 amSIN - SFO
2 stops44h 00mAir India
Deal found 12/11$853

Find flight deals from San Francisco to Singapore

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$639
(FlightHub)

One-way from

$339
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$1,460

Good round-trip deal

$660 or less

Good one-way deal

$339 or less
Provider with most accurate pricing for San Francisco-Singapore Changi flight deals.
Provider most trusted by Cheapflights users for San Francisco-Singapore Changi flights.
From San Francisco to Singapore Changi
One-way flight from San Francisco to Singapore Changi
Highest demand for flights based on searches. 13% potential increase in price ($137 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($50 potential savings vs. average RT price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from San Francisco to Singapore Changi.
Price to beat on a one-way flight from San Francisco to Singapore Changi.

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco 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, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from San Francisco to Singapore that are best for you.

Fly from

San Francisco

Fly to

Singapore

Route

Depart

Return

Price

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Mon 1/26

10:35 pm-8:00 am

Nonstop17h 25m

Singapore Changi

Mon 2/2

10:20 pm-9:15 pm

Nonstop14h 55m

$641

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Thu 1/22

10:35 pm-8:00 am

Nonstop17h 25m

Singapore Changi

Thu 2/5

10:20 pm-9:15 pm

Nonstop14h 55m

$641

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Tue 1/27

10:35 am-8:15 pm

Nonstop17h 40m

Singapore Changi

Wed 2/4

10:10 am-9:00 am

Nonstop14h 50m

$641

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sat 1/17

12:20 am-6:55 am

1 stop38h 35m

Singapore Changi

Sun 2/1

10:00 am-8:50 am

Nonstop14h 50m

$650

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sat 1/31

10:35 am-8:15 pm

Nonstop17h 40m

Singapore Changi

Thu 2/5

10:45 am-3:20 pm

1 stop20h 35m

$650

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sat 4/11

12:40 pm-11:40 pm

1 stop20h 00m

Singapore Changi

Sat 4/18

1:10 am-10:40 am

1 stop24h 30m

$658

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Mon 4/6

12:40 pm-11:40 pm

1 stop20h 00m

Singapore Changi

Tue 4/14

7:30 am-10:40 am

1 stop18h 10m

$658

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Fri 4/10

12:40 pm-11:40 pm

1 stop20h 00m

Singapore Changi

Mon 4/20

7:30 am-10:40 am

1 stop18h 10m

$658

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sun 2/1

11:40 am-8:25 pm

1 stop40h 45m

Singapore Changi

Tue 3/31

10:30 pm-10:40 am

1 stop27h 10m

$658

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Mon 4/6

12:40 pm-11:40 pm

1 stop20h 00m

Singapore Changi

Wed 4/15

7:30 am-10:40 am

1 stop18h 10m

$658

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from San Francisco to Singapore

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Singapore in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Singapore flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on San Francisco-Singapore flight deals on Cheapflights vs. Justfly.com >95% of the time. Price accuracy is based on data collected from San Francisco-Singapore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Singapore flights, Cheapflights users trust Justfly.com the most. Justfly.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Singapore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Francisco to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Singapore

How far ahead should I book a flight from San Francisco to Singapore?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Singapore. Price data was last updated on December 5, 2025.

The best time to book flights from San Francisco to Singapore is 86 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Francisco to Singapore?

Currently, February is the cheapest month in which you can book a flight from San Francisco to Singapore (average of $390). Flying from San Francisco to Singapore in June is currently the most expensive (average of $768). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to SIN?

Find hourly flight availability from San Francisco to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Singapore in the morning. If you’re flexible enough to do this you can expect to save up to 34% on your trip compared to booking a flight in the afternoon.

The best insider tips for San Francisco to Singapore flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Singapore trip
Airports
SFO

For a stress-free departure, use SFO's AirTrain to quickly navigate between terminals and reach your gate efficiently.

SIN

Upon arrival at SIN, use the Grab rideshare app for a quick 25-minute ride to the city center.

Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on SIN

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more
Harriet Baskas

Harriet Baskas

Expert on SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Reviews of airlines servicing Singapore

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated December 12, 2025.
See what other customers who have flown with Asiana Airlines, Singapore Airlines, and Cathay Pacific from San Francisco to Singapore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.4

Entertainment

7.7

Comfort

8.1

Crew

8.6

Overall

8.2

Food

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.

Boarding

8.4

Entertainment

7.7

Comfort

8.1

Crew

8.6

Overall

8.2

Food

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.

Boarding

8.4

Entertainment

7.7

Comfort

8.1

Crew

8.6

Overall

8.2

Food

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.

Boarding

8.4

Entertainment

7.7

Comfort

8.1

Crew

8.6

Overall

8.2

Food

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.

Boarding

8.4

Entertainment

7.7

Comfort

8.1

Crew

8.6

Overall

8.2

Food

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.

Boarding

8.4

Entertainment

7.7

Comfort

8.1

Crew

8.6

Overall

8.2

Food

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

BKK - ICN

We wished that Asiana Airlines website should perform better by itself. Thanks to "Genfly" by Kayak that helped us get the tickets for us. Genfly also follow up with update flights schedule all the way. We gave Asiana Airlines "GOOD", and "Genfly" by Kayak "EXCELLENT" **** BTW...we will do it again nest time. Real passengers.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airports do I use to fly from San Francisco to Singapore?

    To fly from San Francisco to Singapore, you need to book a flight from San Francisco (SFO) to Changi (SIN). Nonstop flights to Singapore Changi from San Francisco take 16h 25m on average. When it comes time to book airfare, you have a few options: there are 4 outbound flights from San Francisco to Changi offered by 14 different airlines.

  • How popular is this San Francisco to Singapore flight route?

  • How long is the flight from San Francisco to Singapore?

    United Airlines can get you from San Francisco to Singapore in just under 17h 25m. Your travel time will be generally consistent. There are 8433 mi between San Francisco and Singapore. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from San Francisco to Singapore round-trip?

    Our cheapest airline available from San Francisco to Singapore is China Airlines. Our recent data shows that you can find tickets from as low as $507 on this airline. Additional options worth looking into are Singapore Airlines and Air India, starting at $572 and $588 round-trip. China Airlines is priced at 44% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from San Francisco to Singapore one-way?

    The cheapest airline one-way is Singapore Airlines, with whom users have recently found tickets for as low as $278. However, be on the lookout for offers from Philippine Airlines and Asiana Airlines, as they are both options that can get you from San Francisco to Singapore for a low price.

  • What are the cheapest flights from San Francisco to Singapore?

    While on average a flight from San Francisco to Singapore is generally $1,400, our data shows the cheapest flight currently is $277. When looking at the most popular route, (San Francisco - Singapore Changi), you can expect to pay $558 for that flight.

  • Where are the most common layover locations when flying from San Francisco to Singapore?

  • What are some popular things to do or see while on a layover in Tokyo?

    Akihabara Electric Town, Tsukiji Outer Market, and Tokyo Tower are currently the most popular points of interest in Tokyo at the moment. Akihabara Electric Town, Tsukiji Outer Market and Tokyo Tower are located about 34.6 mi, 35.3 mi, and 36.7 mi, respectively from Tokyo Narita if you are interested in checking them out. Travelers in need of a car in Tokyo can rent one for about $58 per day.

  • What are some popular points of interest to see during a layover in Hong Kong?

    If you're on a layover in Hong Kong and looking for things to do, consider visiting Hong Kong Disneyland, Shatin Baptist Church, or Fa Yeun Street Market. Travelers on a layover in Hong Kong can visit Hong Kong Disneyland, Shatin Baptist Church, and Fa Yeun Street Market, by traveling 7.8 mi, 18.3 mi, and 16.2 mi, respectively after landing at Hong Kong Intl.

  • What are points of interest worth seeing during a layover in Taipei City?

    The majority of Taipei City visitors spend their time at Taipei 101, Shilin Night Market, and Raohe Street Night Market. Travelers on a layover in Taipei City can visit Taipei 101, Shilin Night Market, and Raohe Street Night Market, by traveling 21.0 mi, 18.3 mi, and 21.6 mi, respectively after landing at Taipei City Taiwan Taoyuan Intl. Travelers can book a car rental at Taipei City Taiwan Taoyuan Intl for about $70 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for San Francisco to Singapore flights?

  • Can I find deals for flights from San Francisco to Singapore that include hotel bookings?

    Yes. In addition to deals on San Francisco to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Singapore.

  • Can I find deals for business class flights from San Francisco to Singapore?

    Yes. Cheapflights offers flight deals from San Francisco to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Francisco to Singapore?

    Currently, February is the cheapest month in which you can book a flight from San Francisco to Singapore (average of $390). Flying from San Francisco to Singapore in June is currently the most expensive (average of $768). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from San Francisco to Singapore

Discover the top 10 airlines that operate flights from San Francisco to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$573Average$805FlexibilityNo cancel feeOn-time81%
Air IndiaCheapest$588Average$671FlexibilityNo cancel feeOn-timeN/A
Philippine AirlinesCheapest$602Average$672FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$643Average$993FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$655Average$743FlexibilityNo cancel feeOn-time76%
ANACheapest$660Average$1,084FlexibilityNo cancel feeOn-time80%
China EasternCheapest$664Average$730FlexibilityNo cancel feeOn-time62%
Korean AirCheapest$680Average$770FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$710Average$2,216FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$727Average$883FlexibilityNo cancel feeOn-time67%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.