May is the cheapest month to fly this route, with average fares around $398 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $398 | $332 | Best | |
| June 2026 | $458 | $400 | Peak | |
| July 2026 | $434 | $399 | ||
| August 2026 | $417 | $399 |
Departing on Wednesday offers the lowest average fares at $414. Saturday departures are the most expensive at $470, a difference of $56.
The best time to fly is May. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from San Francisco to Honolulu is May, with average round-trip fares around $398. The lowest fare found in May is $332.
Wednesday departures are the cheapest, averaging $414 round trip. The most expensive day is Saturday at $470.
Based on current pricing trends, booking for May travel offers the best value. Avoid June if possible, as fares average $458 compared to $398 in the cheapest month. July is a solid middle-ground option at $434.
Flying in May instead of June can save you approximately $60 per round trip. The cheapest month averages $398 while the most expensive averages $458.
Airlines, flight times, price calendar, and more for San Francisco to Honolulu
View SFO → HNL Details