Travelers have found that booking a Tuesday departure is the best way to save up to 150% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.
To save up to 7% on this flight, we recommend booking at least 35 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Harlingen to San Francisco from $99 1-2 weeks out and tickets from $105 for flights departing within the next 72 hours.
Our data shows that August tends to be the cheapest month to fly to San Francisco from Harlingen. Users have commonly found prices around $108 for the month, but tickets can be as low as $48. Due to multiple factors, prepare for potentially higher prices in June.
When flying from Harlingen to San Francisco, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 10% versus a flight in the morning.