Finding cheap flights from San Francisco International Airport (SFO) to John F. Kennedy International Airport (JFK) in March requires flexibility and strategic searching. Primary tactics include searching midweek departures (Tue–Thu), using flexible-date tools, setting fare alerts, and considering redeye nonstops which are often cheaper. Compare alternate airports—Oakland (OAK) and San Jose (SJC) for departures, and LaGuardia (LGA) or Newark (EWR) for arrivals—to uncover lower fares. Use meta-search engines, subscribe to airline newsletters, and book 3–6 weeks in advance for the best March deals. For maximum savings, be open to one-stop itineraries via hubs like Denver, Chicago, or Dallas but weigh the total travel time against savings.