Key Highlights:
- Terminal 1: Serves major domestic airlines, including Southwest, American, Delta, and Allegiant.
- Terminal 3: Handles international airlines and several domestic carriers, including United, Alaska, JetBlue, Frontier, and Hawaiian.
- D Gates: A satellite concourse accessible by automated tram from both terminals.
- Terminal Transfers: A free airport shuttle connects Terminal 1 and Terminal 3, generally operating every 20–30 minutes.
- Before Departure: Check your airline’s terminal assignment and boarding pass before traveling to the airport.
Harry Reid International Airport (LAS) has two passenger terminals, Terminal 1 and Terminal 3, serving domestic and international flights. Southwest, American, Delta, and Allegiant use Terminal 1, while United, Alaska, JetBlue, and most international airlines operate from Terminal 3. The buildings have separate check-in counters, baggage claim areas, and parking facilities. Passengers departing from the D Gates can reach the concourse by airport tram from either terminal. Checking your airline’s assigned terminal before leaving your hotel can help prevent delays, unnecessary shuttle transfers, and confusion at the airport.
Las Vegas Airport Terminal 1 vs. Terminal 3
The airport uses two terminal buildings and several gate concourses.
| Terminal | Gates | Main Airlines |
|---|---|---|
| Terminal 1 | A, B, C & D | Southwest, American, Delta, Allegiant |
| Terminal 3 | D & E | United, Alaska, Frontier, JetBlue, international carriers |
| D Gates | D Concourse | Shared satellite concourse accessible by tram |
Note: D Gates are not a separate passenger terminal. Airlines can change gate assignments, so check your boarding pass before departure.
Terminal 1 Airlines at Las Vegas Airport
Terminal 1 serves several major domestic airlines and provides access to the A, B, C, and D gate concourses.
According to the airport’s airline directory, the following carriers are assigned to Terminal 1.
| Airline | Terminal |
|---|---|
| Advanced Air | Terminal 1 |
| Allegiant Air | Terminal 1 |
| American Airlines | Terminal 1 |
| Delta Air Lines | Terminal 1 |
| Southwest Airlines | Terminal 1 |
Airline service and terminal assignments are subject to change. Check the official airport directory before traveling.
Terminal 1 Gate Layout
Terminal 1 provides access to four gate areas.
The A, B, and C Gates are connected to the main terminal through pedestrian walkways and security areas.
The D Gates are in a separate satellite concourse. Passengers can reach them using the Blue Line automated tram after passing through security.
Southwest primarily operates from the B and C gate areas, while American and Delta frequently use D Gates.
However, gate assignments can change based on airport operations.
Terminal 1 Travel Tip
Terminal 1 can become particularly busy during major convention departures, holidays, and early morning travel periods.
If you’re flying Southwest or another airline with checked luggage, allow additional time for bag drop and security.
Terminal 3 Airlines at Las Vegas Airport
Terminal 3 serves international carriers and several domestic airlines.
It has its own check-in counters, security checkpoints, baggage claim facilities, and access to the D and E Gates.
The airport currently lists the following airlines at Terminal 3.
| Airline | Terminal |
|---|---|
| Aer Lingus | Terminal 3 |
| Aeroméxico | Terminal 3 |
| Air Canada | Terminal 3 |
| Air France | Terminal 3 |
| Alaska Airlines | Terminal 3 |
| Avianca | Terminal 3 |
| Breeze Airways | Terminal 3 |
| British Airways | Terminal 3 |
| Condor | Terminal 3 |
| Contour Airlines | Terminal 3 |
| Copa Airlines | Terminal 3 |
| Discover Airlines | Terminal 3 |
| Edelweiss Air | Terminal 3 |
| Flair Airlines | Terminal 3 |
| Frontier Airlines | Terminal 3 |
| Hawaiian Airlines | Terminal 3 |
| JetBlue Airways | Terminal 3 |
| KLM Royal Dutch Airlines | Terminal 3 |
| Korean Air | Terminal 3 |
| Porter Airlines | Terminal 3 |
| Sun Country Airlines | Terminal 3 |
| United Airlines | Terminal 3 |
| Virgin Atlantic | Terminal 3 |
| Viva Aerobus | Terminal 3 |
| Volaris | Terminal 3 |
| WestJet | Terminal 3 |
These assignments follow the official airport airline directory. Some routes operate seasonally, and airline availability can change.
Terminal 3 Gate Layout
Terminal 3 provides access to two main gate areas.
E Gates: Located within Terminal 3 and commonly used for international departures and arrivals.
D Gates: Accessible from Terminal 3 using the Red Line automated tram after security.
Passengers departing from D Gates should follow the overhead signs rather than assuming their boarding gate is inside the main Terminal 3 building.
How to Reach the D Gates at Las Vegas Airport
The D Gates are in a satellite concourse between Terminal 1 and Terminal 3.
They do not have a separate public entrance or check-in lobby.
Passengers reach D Gates through the airport’s automated tram system.
- From Terminal 1: Clear security and follow signs to the Blue Line Tram.
- From Terminal 3: Clear security and take the Red Line Tram to D Gates.
- Connecting between terminals: Follow the appropriate tram signs after reaching the D Gates connection area.
Passengers traveling without checked bags may be able to use either terminal’s security checkpoint when their boarding pass provides access to the connected gate system.
However, anyone checking luggage should use their airline’s assigned check-in terminal.
How to Transfer Between Terminal 1 and Terminal 3
Terminal 1 and Terminal 3 are separate buildings without a public pedestrian connection outside security.
If you arrive at the wrong terminal, the airport provides a free inter-terminal courtesy shuttle.
From Terminal 1 to Terminal 3
- Go to Level 0 of the Terminal 1 parking garage.
- Follow the signs for the inter-terminal shuttle.
- Board the free shuttle to Terminal 3.
- Proceed to your airline’s check-in area.
From Terminal 3 to Terminal 1
- Head to Level 0 at Terminal 3.
- Exit toward the west end of the terminal.
- Follow the Ground Transportation signs.
- Board the complimentary shuttle to Terminal 1.
The airport advises that shuttles generally operate every 20–30 minutes, with a journey of approximately 10 minutes.
Allow additional time for waiting, luggage handling, and reaching your correct check-in counter.
How Early Should You Arrive at Las Vegas Airport?
A practical planning target is to arrive approximately two hours before a domestic flight and three hours before an international flight.
During major conventions, holidays, or busy weekends, extra time may be helpful.
Passengers checking luggage should also consider their airline’s bag-drop deadline.
For updated airline assignments, live departures, and terminal information, visit the Harry Reid International Airport Official Website.
Conclusion
Knowing which airlines use Terminal 1 and Terminal 3 at Las Vegas Airport can make departure day much easier. Terminal 1 serves Southwest, American, Delta, and Allegiant, while Terminal 3 handles United, Alaska, Frontier, JetBlue, and international carriers. The D Gates are accessible from both terminals by tram, and a free shuttle connects the separate buildings. Always confirm your terminal before leaving for the airport, especially if you have checked luggage.
Frequently Asked Questions
Which terminal is Southwest Airlines at Las Vegas Airport?
Southwest Airlines uses Terminal 1 at Harry Reid International Airport. Its flights commonly depart from the B and C Gates.
Is Delta at Terminal 1 or Terminal 3 in Las Vegas?
Delta Air Lines uses Terminal 1 for passenger check-in. Many Delta flights depart from the D Gates, which are accessible by the Blue Line Tram.
Which terminal does United Airlines use at Las Vegas Airport?
United Airlines uses Terminal 3. Passengers should check their boarding passes for the assigned gate and follow signs to either the D or E gate area.
Can I walk between Terminal 1 and Terminal 3 at LAS?
No. The terminals do not have a public landside pedestrian connection. Passengers can use the free inter-terminal shuttle or the post-security tram connections when eligible.
Which terminal handles international flights in Las Vegas?
Terminal 3 handles international airline operations and has U.S. Customs and Border Protection facilities. Some international travelers may undergo U.S. immigration preclearance before departing their origin airport.
Are the D Gates in Terminal 1 or Terminal 3?
D Gates are located in a separate satellite concourse accessible from both terminals. Terminal 1 connects through the Blue Line Tram, while Terminal 3 connects through the Red Line Tram.
What happens if I go to the wrong terminal at Las Vegas Airport?
Use the free inter-terminal shuttle connecting Terminal 1 and Terminal 3. The shuttle generally runs every 20–30 minutes, so allow additional time before your flight.
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