July is the cheapest month to fly this route, with average fares around $176 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $209 | $183 | Peak | |
| June 2026 | $186 | $173 | ||
| July 2026 | $176 | $171 | Best | |
| August 2026 | $182 | $171 |
Departing on Wednesday offers the lowest average fares at $178. Sunday departures are the most expensive at $196, a difference of $18.
The best time to fly is July. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Austin to San Francisco is July, with average round-trip fares around $176. The lowest fare found in July is $171.
Wednesday departures are the cheapest, averaging $178 round trip. The most expensive day is Sunday at $196.
Based on current pricing trends, booking for July travel offers the best value. Avoid May if possible, as fares average $209 compared to $176 in the cheapest month. June is a solid middle-ground option at $186.
Flying in July instead of May can save you approximately $33 per round trip. The cheapest month averages $176 while the most expensive averages $209.
Airlines, flight times, price calendar, and more for Austin to San Francisco
View AUS → SFO Details