Cheap flights from Las Vegas to San Diego from $43

If you are unable to visit San Diego during the month of August, then departing from Las Vegas during the month September is also very affordable. Most momondo users find prices during this month for around $91.

The cheapest day to depart from Las Vegas to San Diego is on a Saturday. Travelers who choose to depart for San Diego on a Saturday will often find tickets for as low as $103. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $166. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

The cheapest time of day to fly to San Diego is in the afternoon when flights can be purchased for as low as $99. Flights at noon are often more expensive with an average ticket price of $161.

Fly from Las Vegas Harry Reid Intl to San Diego for the best Las Vegas Harry Reid Intl - San Diego flight prices

You are more likely to see cheaper flights to San Diego from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $113 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Las Vegas for as low as $69 on momondo.

Southwest, Delta, and United Airlines are the most popular carriers operating from Las Vegas Harry Reid Intl to San Diego

Frontier, Spirit Airlines and Southwest are the top three most popular airlines that fly to San Diego from Las Vegas according to our data. Frontier is the first choice among our users, with 42% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 8 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% of flights between Las Vegas and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 109 minutes.

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

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

According to our data, Spirit Airlines have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

As of May 2026, there are 14 flights per day flying from Las Vegas to San Diego. The most common time of day flights depart is 12:00PM, with 42% of flights taking off in the afternoon.

As of May 2026, there are 102 flights per week flying from Las Vegas to San Diego. The most common day of the week flights depart is Sun, with 22% of flights taking off on this day.