The gateway to Las Vegas is Harry Reid International Airport (formerly McCarran International Airport).

The airport's name was changed in 2021 to honor Harry Reid, a senator from Nevada. This airport is located just about 5 km from the Las Vegas Strip, making it one of the most accessible airports to downtown among major city airports in the U.S. The airport code is LAS, and it is one of the hub airports representing the western United States.

Harry Reid International Airport consists of Terminal 1 and Terminal 3. Terminal 1 is primarily used by Alaska Airlines and Southwest Airlines, while Terminal 3 is served by United Airlines, American Airlines, Delta Airlines, and international flights. There is an airport shuttle bus operating between the two terminals, with a travel time of about 10 to 15 minutes. Inside the airport, there are casinos, slot machines, various restaurants, and shopping stores, making it a great place to spend waiting time before your flight. The presence of slot machines in the airport's immigration area is a unique feature of Las Vegas airports.

There are several ways to get from the airport to the Strip and downtown. The most convenient options are Uber or Lyft, with a designated rideshare pick-up zone available. It takes about 15 to 25 minutes to reach the center of the Strip, and the fare is around $15 to $25, but prices can increase significantly during major events or peak times. Taxis can be boarded outside the airport's first-floor exit, with fares to the Strip ranging from $20 to $35. RTC public buses (Route 108, WAX, etc.) also connect the airport to the Strip and downtown, but they may take longer and can be inconvenient for handling large luggage.

If you are using a rental car, there is a separate Rental Car Center located near the airport. A free shuttle bus can take you from the terminal to the rental car center, with a travel time of about 10 minutes. Las Vegas is a car-centric city, so renting a car is convenient if you plan to stay for more than a week or visit the outskirts. Rental car rates at Las Vegas airport can vary significantly between peak and off-peak seasons, so it is advisable to book in advance to secure lower rates.

Regarding trains, currently, Amtrak does not operate direct train service to Las Vegas. There used to be train service to Las Vegas, but it has been discontinued, and the nearest Amtrak stations are located about 4 hours away in Needles, California, or about 5 hours away in Kingman, AZ. If you want to travel by train from Los Angeles to Las Vegas, you can connect using Amtrak's Thruway Bus service for some segments.

However, it is worth noting that plans for high-speed rail development are underway. Brightline West is a high-speed rail project connecting Las Vegas and Rancho Cucamonga, California, with construction ongoing and a goal to open before the 2028 Los Angeles Olympics. Once completed, the travel time between Las Vegas and Los Angeles is expected to be reduced to about 2 hours and 10 minutes. It is reported that a train station site is planned in downtown Las Vegas, which is expected to significantly improve transportation accessibility in Las Vegas upon completion.

In terms of bus routes, Las Vegas is connected to major cities like Los Angeles, Phoenix, and Salt Lake City via long-distance buses such as Greyhound and FlixBus. The journey from Los Angeles to Las Vegas takes about 4 to 5 hours, with fares ranging from $15 to $60 depending on the booking time and route. Additionally, several local bus routes can be accessed through the Downtown Transportation Center in downtown Las Vegas. Overall, Las Vegas has excellent air accessibility, but train access is currently limited, and the completion of the Brightline high-speed rail is expected to greatly improve this situation.