Cheap flights from San Francisco to Cancún from $140

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 $535.

The cheapest day to depart from San Francisco to Cancún is on a Monday when prices can be found for as low as $623. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $694. 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 $653. Flights to Cancún are more costly in the morning, with an average ticket price of $662. 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 $619 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 $565 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.

No. A direct flight is the cheapest option for a flight between San Francisco to Cancún.

As of May 2026, prices for San Francisco to Cancún flights are approximately 49% more expensive when compared to flights at the same time last year.

Historically, on average around 15% 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 151 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 14% of their flights experiencing any sort of delay.

Denver (DEN) was the most common stop: 34% 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 Salt Lake City (SLC) have the shortest average one-way travel time: 7h 20m.

Minneapolis (MSP) has the shortest average layover time for this route: 1h 16m.

2 flights are operational daily from San Francisco to Cancún as of May 2026. The most popular departure time for this route is 8:00AM, with 50% of flights per day taking off at noon.

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