Cheap flights from San Diego to Las Vegas from £31

In general, August is the cheapest month to fly from San Diego to Las Vegas. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £71. If you’re not able to fly to Las Vegas in August, then May is your next best option. Flight prices from San Diego to Las Vegas during May average around £73.

The cheapest day to depart on your flight to Las Vegas is on a Friday when prices can be found for as low as £73. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday is the most expensive day to depart from San Diego because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £277.

Our data shows that the cheapest San Diego to Las Vegas flights are usually those with departure times in the afternoon. Our users have found flights to Las Vegas in the afternoon for as low as £76. Flights to Las Vegas are more costly in the morning, with an average ticket price of £141. Departure times in the morning 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 £91 when searching weeks before you fly. 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 £70 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.

You could potentially save up to 6% on your flight if you consider stops on a San Diego to Las Vegas flight.

As of March 2026, prices for San Diego to Las Vegas flights are approximately 50% more expensive when compared to flights at the same time last year.

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 departing at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest 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 fewest delays on this route over the last 12 months, with about 12% of their flights experiencing any sort of delay.

As of March 2026, there are 15 flights per day flying from San Diego to Las Vegas. The most common time of day flights depart is 07:00, with 42% of flights taking off in the afternoon.

As of March 2026, 105 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 26% of weekly flights taking off on this day.