Cheap flights from San Francisco to San José from $147

In general, September is the cheapest month to fly from San Francisco to San José. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $518. If you don’t want to visit San José in September, then you should wait until August to fly from San Francisco, when ticket prices are also cheap, with an average price of $566.

On average, the least expensive day to fly to San José from San Francisco is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $747. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from San Francisco to San José on a Saturday will generally be more expensive and average around $910. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Fly from San Francisco to San José Juan Santamaria Intl for the best San Francisco - San José Juan Santamaria Intl flight prices

You are more likely to see cheaper flights to San José from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to San José for around $646 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San José from San Francisco for as low as $595 on momondo.

As of May 2026, prices for San Francisco to San José flights are approximately 26% more expensive when compared to flights at the same time last year.

Alaska Airlines, Avianca, and JetBlue are the most popular carriers operating from San Francisco to San José Juan Santamaria Intl

Avianca, United Airlines and Alaska Airlines are the top three most popular airlines that fly to San José from San Francisco according to our data. Avianca is the first choice among our users, with 51% of people opting to fly with this airline when traveling to San José. Keep in mind that there are 9 different airlines that fly to San José on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% of flights between San Francisco and San José have experienced a delay on any given week. The average delay length over the past 12 months has been 98 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

San Salvador (SAL) was the most common stop: 83% of momondo users choosing 1-stop flights on this route connected there.

Flights via Fort Lauderdale (FLL) offer the lowest average round-trip price of $508.

Flights connecting via San Salvador (SAL) have the shortest average one-way travel time: 8h 22m.

San Salvador (SAL) has the shortest average layover time for this route: 1h 46m.

The number of flights available between San Francisco and San José is 1 per day as of May 2026. The most frequent departure time is 11:00PM, with 100% of daily flights leaving in the evening.

As of May 2026, 7 flights take off from San Francisco and land in San José each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.