Cheap flights from Singapore to San Francisco from $428

If you aren’t able to travel to San Francisco during the month of February, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $761.

The cheapest day to depart from Singapore to San Francisco is on a Tuesday when prices can be found for as low as $1,077. The most expensive day to fly to San Francisco is Saturday, with ticket prices averaging around $1,266.

Our data shows that the cheapest Singapore to San Francisco flights are usually those with departure times in the morning. Our users have found flights to San Francisco in the morning for as low as $1,109. Flights in the evening are often more expensive with an average ticket price of $1,209.

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

You are more likely to see cheaper flights to San Francisco from Singapore when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $842 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Singapore for as low as $737 on momondo.

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

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

As of February 2026, prices for Singapore to San Francisco flights are approximately 26% cheaper when compared to flights at the same time last year.

Singapore Airlines and United Airlines are the most popular carriers operating from Singapore Changi to San Francisco

United Airlines, Singapore Airlines and EVA Air are the top three most popular airlines that fly to San Francisco from Singapore according to our data. United Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 4 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Historically, on average around 19% of flights between Singapore and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 125 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Singapore Airlines have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

Incheon (ICN) was the most common stop: 28% of momondo users choosing 1-stop flights on this route connected there.

Flights via Taipei City (TPE) offer the lowest average round-trip price of $833.

Flights connecting via Tokyo (NRT) have the shortest average one-way travel time: 18h 40m.

Hong Kong (HKG) has the shortest average layover time for this route: 2h 12m.

The number of flights available between Singapore and San Francisco is 3 per day as of February 2026. The most frequent departure time is 9:00AM, with 51% of daily flights leaving in the evening.

The number of flights available between Singapore and San Francisco is 23 per week as of February 2026. The most frequent departure day is Thu, with 17% of weekly flights leaving on this day.