Cheap flights from San Francisco to Cancún from $236

If you don’t want to visit Cancún in January, then you should wait until February to fly from San Francisco, when ticket prices are also cheap, with an average price of $558.

The cheapest day to depart from San Francisco to Cancún is on a Sunday when prices can be found for as low as $640. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $721. These prices are subject to change though, so be sure to set up a Price Alert for flights to Cancún.

Our most recent data shows that the best time of day to fly to Cancún is in the evening. Flights from San Francisco to Cancún during this time can be as low as $663. Flights to Cancún are more costly in the morning, with an average ticket price of $688. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from San Francisco to Cancun for the best San Francisco - Cancun flight prices

You are more likely to see cheaper flights to Cancún from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Cancún for around $645 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cancún from San Francisco for as low as $587 on momondo.

There are 4 cabin classes available to choose from on San Francisco to Cancún flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 29% on your flight if you consider stops on a San Francisco to Cancún flight.

As of November 2026, prices for San Francisco to Cancún flights are approximately 15% cheaper when compared to flights at the same time last year.

United Airlines and JetBlue are the most popular carriers operating from San Francisco to Cancun

United Airlines, Volaris and American Airlines are the top three most popular airlines that fly to Cancún from San Francisco according to our data. United Airlines is the first choice among our users, with 79% of people opting to fly with this airline when traveling to Cancún. Keep in mind that there are 11 different airlines that fly to Cancún on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% of flights between San Francisco and Cancún have experienced a delay on any given week. The average delay length over the past 12 months has been 131 minutes.

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

Thursday 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 16% of their flights experiencing any sort of delay.

Mexico City (MEX) was the most common stop: 32% of momondo users choosing 1-stop flights on this route connected there.

Flights via Guadalajara (GDL) offer the lowest average round-trip price of $249.

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 7h 13m.

Mexico City (MEX) has the shortest average layover time for this route: 1h 40m.

2 flights are operational daily from San Francisco to Cancún as of November 2026. The most popular departure time for this route is 8:00AM, with 60% of flights per day taking off at noon.

The number of flights available between San Francisco and Cancún is 14 per week as of November 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.