British Airways operates from Terminal 3, Concourse E at Harry Reid International Airport (LAS) in Las Vegas. BA’s Las Vegas route connects directly to London Heathrow (LHR) — one of the most popular transatlantic leisure routes and a significant draw for both U.S. and UK travelers. Service is typically seasonal; verify current availability at ba.com.

Breeze Airways operates from Terminal 3, Concourse D at Harry Reid International Airport (LAS). This is an important detail: Concourse D is a satellite concourse — it is not directly walkable from the Terminal 3 check-in hall. After clearing TSA security in Terminal 3, passengers take the Automated Transit System (ATS) tram to reach Concourse

Avianca operates from Terminal 3, Concourse E at Harry Reid International Airport (LAS). Avianca is Central America’s largest carrier, connecting Las Vegas to its San Salvador (SAL) hub and providing onward access to destinations across Central and South America. International arrivals clear U.S. Customs at LAS. Avianca — Terminal & Gate Quick Reference Airline: AviancaTerminal:

Alaska Airlines operates from Terminal 3, Concourse E at Harry Reid International Airport (LAS) in Las Vegas. Alaska Airlines is a Oneworld alliance member with a strong West Coast network — it is the dominant carrier on Las Vegas routes to Seattle, Portland, and Alaska, and offers extensive connections via its hub system. Alaska Airlines

Air Canada operates from Terminal 3, Concourse E at Harry Reid International Airport (LAS) in Las Vegas. Air Canada connects Canada’s major cities to Las Vegas year-round, with seasonal frequency increases in winter when Las Vegas is a top leisure destination for Canadians. As an international arrival, Canadian passengers clear U.S. Customs and Border Protection

AeroMexico operates from Terminal 3, Concourse E at Harry Reid International Airport (LAS) in Las Vegas. AeroMexico is Mexico’s flag carrier and a SkyTeam alliance member. Flights between Las Vegas and Mexico are international — arriving passengers must clear U.S. Customs and Border Protection (CBP) before collecting bags and exiting the terminal. AeroMexico — Terminal

Sun Country Airlines operates from Terminal 1, Concourse B at Harry Reid International Airport (LAS) in Las Vegas. Sun Country is a Minneapolis-based hybrid airline — it operates scheduled routes and charter flights, with Las Vegas being one of its highest-frequency leisure destinations year-round. Sun Country Airlines — Terminal & Gate Quick Reference Airline: Sun

Spirit Airlines operates from Terminal 1, Concourse B at Harry Reid International Airport (LAS) in Las Vegas. Spirit is one of the high-volume carriers at LAS — its yellow aircraft are a common sight on the tarmac. Like all ultra-low-cost carriers, Spirit’s base fares are headline-low but come with significant add-on fees; knowing the system

Frontier Airlines operates from Terminal 1, Concourse B at Harry Reid International Airport (LAS) in Las Vegas. All Frontier flights — arrivals and departures — use Terminal 1. As an ultra-low-cost carrier, Frontier uses a bare-bones fare structure with significant add-on fees; knowing what to expect before you arrive at the airport will save you

Delta Air Lines operates from Terminal 1, Concourses A and B at Harry Reid International Airport (LAS) in Las Vegas. Despite being one of the world’s largest full-service airlines, Delta operates from Terminal 1 — not Terminal 3 — a detail that surprises many travelers who expect Delta alongside United and Alaska in the international

Contour Aviation operates from Terminal 1, Concourse A at Harry Reid International Airport (LAS) in Las Vegas. Contour is a regional carrier serving smaller markets, and Concourse A is the quietest, most manageable concourse at Terminal 1 — a significantly less hectic experience than the busy B and C concourses. Contour Aviation — Terminal &

American Airlines operates from Terminal 1, Concourses B and C at Harry Reid International Airport (LAS) in Las Vegas. All American Airlines flights — arrivals and departures — use Terminal 1. Despite being one of the world’s largest airlines, American operates from Terminal 1 alongside budget carriers rather than Terminal 3. American Airlines — Terminal

Allegiant Air operates from Terminal 1, Concourse B at Harry Reid International Airport (LAS) in Las Vegas. Allegiant is headquartered in Las Vegas and is one of the airport’s largest carriers — all Allegiant flights, arrivals and departures, use Terminal 1. Allegiant Air — Terminal & Gate Quick Reference Airline: Allegiant Air Terminal: Terminal 1

Advanced Air operates from Terminal 1, Concourse A at Harry Reid International Airport (LAS) in Las Vegas. All Advanced Air scheduled and charter passenger flights — arrivals and departures — use Terminal 1. Concourse A is the smallest of Terminal 1’s three concourses, primarily serving regional carriers and smaller aircraft operators. Advanced Air — Terminal

Harry Reid International Airport (LAS) handled nearly 55 million passengers in 2025, making it one of the 10 busiest airports in the United States. It operates across two separate terminal buildings, five concourses, and more than 110 gates serving 30+ domestic and international carriers. This guide covers every airline, every terminal assignment, every concourse, and