August is the cheapest month to fly this route, with average fares around $1095 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $1288 | $1100 | Peak | |
| June 2026 | $1244 | $1034 | ||
| July 2026 | $1180 | $996 | ||
| August 2026 | $1095 | $1064 | Best |
Departing on Tuesday offers the lowest average fares at $1155. Wednesday departures are the most expensive at $1252, a difference of $97.
The best time to fly is August. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from San Francisco to Singapore is August, with average round-trip fares around $1095. The lowest fare found in August is $1064.
Tuesday departures are the cheapest, averaging $1155 round trip. The most expensive day is Wednesday at $1252.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $1288 compared to $1095 in the cheapest month. June is a solid middle-ground option at $1244.
Flying in August instead of May can save you approximately $193 per round trip. The cheapest month averages $1095 while the most expensive averages $1288.
Airlines, flight times, price calendar, and more for San Francisco to Singapore
View SFO → SIN Details