Cheap flights from San Diego to Las Vegas from $37

The month of August is, on average, the cheapest month to fly to Las Vegas from San Diego, with most prices found around $94. The month of May is another great option to travel to Las Vegas, with average flight prices from San Diego averaging around $97.

Our data shows that Sunday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $129. Flights from San Diego to Las Vegas on a Wednesday will generally be more expensive and average around $167. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

The cheapest time of day to fly to Las Vegas is at noon when flights can be purchased for as low as $142. Flights to Las Vegas are more costly in the evening, with an average ticket price of $177. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Las Vegas from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $118 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from San Diego for as low as $92 on momondo.

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

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

Frontier, Spirit Airlines and Southwest are the top three most popular airlines that fly to Las Vegas from San Diego according to our data. Frontier is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Las Vegas. Keep in mind that there are 11 different airlines that fly to Las Vegas on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% of flights between San Diego and Las Vegas have experienced a delay on any given week. The average delay length over the past 12 months has been 115 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.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday 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 11% of their flights experiencing any sort of delay.

The number of flights available between San Diego and Las Vegas is 15 per day as of March 2026. The most frequent departure time is 7:00AM, with 42% of daily flights leaving in the afternoon.

As of March 2026, 111 flights take off from San Diego and land in Las Vegas each week. The most common flight departure day for this route is Fri, with 22% of weekly flights taking off on this day.