July is the cheapest month to fly this route, with average fares around $94 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $119 | $56 | Peak | |
| June 2026 | $98 | $56 | ||
| July 2026 | $94 | $56 | Best | |
| August 2026 | $103 | $56 |
Departing on Wednesday offers the lowest average fares at $73. Sunday departures are the most expensive at $135, a difference of $62.
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 San Diego to San Francisco is July, with average round-trip fares around $94. The lowest fare found in July is $56.
Wednesday departures are the cheapest, averaging $73 round trip. The most expensive day is Sunday at $135.
Based on current pricing trends, booking for July travel offers the best value. Avoid May if possible, as fares average $119 compared to $94 in the cheapest month. August is a solid middle-ground option at $103.
Flying in July instead of May can save you approximately $25 per round trip. The cheapest month averages $94 while the most expensive averages $119.
Airlines, flight times, price calendar, and more for San Diego to San Francisco
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