Allegiant

Q: What are Allegiant's airline codes?

Allegiant's IATA code is G4 , its ICAO code is AAY , and its callsign is ALLEGIANT .

G4 AAY

Allegiant is a US low-cost airline that links small and mid-size cities with leisure destinations such as Las Vegas and Florida. This guide covers its bases, network, fleet, seat options, baggage, check-in, Allways Rewards and airport transportation.

124
Aircraft: 124
Destinations: LAS
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The airline

About Allegiant

Schedules, aircraft assignments, terminals and fare rules can change. Confirm operational details directly with Allegiant before travel.

Official name: Allegiant Air, LLC
Callsign: ALLEGIANT
Country: United States
Founded: 1997
Parent company: Allegiant Travel Company
Head office: Las Vegas, Nevada, United States
Alliance: None
Frequent-flyer program: Allways Rewards
Official website: allegiantair.com

Allegiant is a US low-cost airline that flies leisure travelers between small and mid-size cities and vacation destinations, mostly on nonstop routes. Allegiant Air was founded in 1997 and is based in Las Vegas, Nevada. It is owned by Allegiant Travel Company, which has also owned Sun Country Airlines since May 2026; the two airlines keep separate brands for now. Allegiant is not a member of an airline alliance.

Las Vegas Harry Reid International Airport is its main base, alongside major bases in Orlando Sanford, St. Pete–Clearwater and Phoenix–Mesa Gateway. Aircraft are also based at airports such as Cincinnati, Fort Lauderdale, Indianapolis, Nashville, Pittsburgh and Punta Gorda. The network covers about 124 cities across the United States, with many routes to Florida, Las Vegas, Arizona and other leisure spots.

The fleet of about 124 aircraft is made up of Airbus A319 and A320 jets and Boeing 737 MAX 8-200s.

Network

Where Allegiant flies

Many Allegiant routes run only a few days a week, and some are seasonal. Check the days and dates on sale for your route before you plan your trip.

Florida

Flights to Orlando Sanford, St. Pete–Clearwater, Punta Gorda, Sarasota, Fort Lauderdale and Destin–Fort Walton Beach from cities across the Midwest, Northeast and South. Routes for fall 2026 include Fort Lauderdale to Boston, Kansas City, Omaha and Pittsburgh, and St. Pete–Clearwater to Philadelphia.

Las Vegas and the West

Flights to Las Vegas, Phoenix–Mesa and Provo, and from Western cities such as Bellingham, Boise and Eugene to leisure destinations.

Small and mid-size cities

Most routes start in smaller US cities, such as Appleton, Des Moines, Grand Rapids, Knoxville and La Crosse, and fly nonstop to vacation spots.

Larger city airports

Allegiant also flies from some larger airports, including Philadelphia, Chicago Midway, Houston Hobby, Newark and Orange County (John Wayne).

Aircraft

Allegiant fleet

The figure of about 124 aircraft is Allegiant's passenger fleet as reported for mid-2026, not counting Sun Country Airlines. The aircraft shown at booking is not guaranteed until departure.

Airbus A320

Most of the fleet, used across the network.

Airbus A319

A smaller Airbus model used on routes with lower demand.

Boeing 737 MAX 8-200

A newer high-density version of the 737 MAX 8 with 190 seats.

On board

Allegiant cabin classes

Allegiant has a single economy cabin. The base fare covers the seat and a personal item; other services are added as extras or in bundles when you book. Check the seat map and fare conditions before you buy.

Economy

One economy cabin on every aircraft. A seat is assigned at check-in if you do not choose one.

Allegiant Extra

Seats with extra legroom, sold as an upgrade on aircraft that have them.

Bundles

Bundles combine items such as bags, seat selection and flexibility. They can only be bought at the original booking and cannot be changed.

Trip Flex

An option bought at booking that allows one change to your date, flight or destination; any fare difference still applies.

Before you fly

Practical information

Baggage Cabin bags, checked bags, missing luggage

Allegiant baggage allowances depend on fare and the extras you add. Allowances are shown during booking.

Carry-on

Every fare includes one personal item up to 8 x 14 x 18 in (20 x 35 x 45 cm) that fits under the seat. A carry-on bag up to 10 x 16 x 22 in (25 x 40 x 55 cm) depends on fare.

Checked baggage

Checked bags depend on fare. Each bag can weigh up to 50 lb (22 kg) with combined dimensions up to 80 in (203 cm) before overweight or oversize rules apply.

Special items

Sports equipment, pets, oversized items and medical equipment follow separate rules. Check the official Allegiant site before you fly.

Check-in and boarding Steps before departure

Online and mobile check-in on allegiantair.com or the Allegiant app opens 24 hours before departure and closes 45 minutes before the scheduled flight time. Airport check-in also closes 45 minutes before departure.

1 Confirm
Confirm the airport and departure time. Allegiant often uses smaller airports in large metro areas.
2 Documents
Bring a valid government-issued photo ID for security screening.
3 Check in
Check in online or in the app as soon as it opens, 24 hours before departure.
4 Boarding pass
Use the mobile boarding pass in the app or print it. Every passenger must have a boarding pass before departure.
5 Arrive early
Allow time for bag drop and security, and finish check-in at least 45 minutes before departure.

Lounges

Allegiant does not operate airport lounges. Travelers can use the public areas and any independent lounges open to all passengers at their departure airport.

Loyalty program

Allways Rewards is Allegiant's loyalty program. Members earn points on Allegiant purchases, including flights, and with the Allways Rewards Visa card, and redeem them toward Allegiant travel. Sun Country Rewards stays a separate program for now. Program rules change, so check your account for the conditions that apply to your trip.

Flight status and customer service Official sources

For current operational information, use Allegiant's official services:

Allegiant website

allegiantair.com for booking, check-in, trip management and flight status

Allegiant app

Available for iOS and Android, with mobile boarding passes and trip updates

Where you land

Allegiant airports

Allegiant often flies from the smaller airport in a metro area. In Orlando it uses Orlando Sanford (SFB), in the Tampa Bay area St. Pete–Clearwater (PIE), and in Phoenix Phoenix–Mesa Gateway (AZA), not the main international airport in each area. Check the airport on your ticket before you book a transfer.

Harry Reid International Airport Hub

LAS · Las Vegas

Allegiant's main base, with nonstop flights to Las Vegas from cities across the United States. Allegiant uses Terminal 1.