Cheap flights from San Francisco to Singapore from $339

The month of September is, on average, the cheapest month to fly to Singapore from San Francisco, with most prices found around $669. If you aren’t able to travel to Singapore during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $736.

The cheapest day to depart from San Francisco to Singapore is on a Monday when prices can be found for as low as $798. The most expensive day to fly to Singapore is Saturday, with ticket prices averaging around $1,002.

In the morning is the cheapest time of day to fly from San Francisco to Singapore when you can find flight prices for as low as $837. Flying to Singapore in the morning 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 evening when prices are $1,196 on average. Flights to Singapore from San Francisco in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Singapore from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $882 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from San Francisco for as low as $768 on momondo.

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

United Airlines, Asiana Airlines, and Cathay Pacific are the most popular carriers operating from San Francisco to Singapore

Singapore Airlines, United Airlines and Air Canada are the top three most popular airlines that fly to Singapore from San Francisco according to our data. Singapore Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 13 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% of flights between San Francisco and Singapore have experienced a delay on any given week. The average delay length over the past 12 months has been 116 minutes.

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

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday 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 12% of their flights experiencing any sort of delay.

The number of flights available between San Francisco and Singapore is 4 per day as of February 2026. The most frequent departure time is 9:00AM, with 50% of daily flights leaving at noon.

As of February 2026, 28 flights take off from San Francisco and land in Singapore each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.