About G4
Allegiant Air (IATA: G4) is a US ultra-low-cost carrier that's built its entire business around one idea: fly leisure travelers from smaller cities directly to vacation spots, skip the hub-and-spoke madness, and keep fares low enough that flying beats driving. Their network is almost entirely domestic — all 1,078 routes touch US soil — and they don't partner with legacy carriers or chase business travelers. Orlando Sanford (SFB) anchors the operation with 66 routes, which tells you everything about who they're courting. This is a sun-and-fun airline, full stop.
Why fly G4?
The honest answer is price. Allegiant consistently undercuts legacy carriers on leisure routes, especially into secondary Florida airports like SFB and PGD that bigger airlines ignore. If you're flying into the Orlando or Fort Myers area, G4 often serves airports that are actually closer to theme parks or beaches than their "major airport" competitors. The network spans 1,597,742 km across 126 airports, which sounds huge until you realize it's laser-focused on point-to-point vacation routes — meaning fewer connections and less chance your bag ends up in Cleveland. They also run Allegiant World Mastercard deals worth stacking with base fares. No lounges, no frills, no apologies.
G4 hub airports
- SFB Orlando — 66 G4 routes from USA
- PIE Saint Petersburg — 61 G4 routes from USA
- LAS Las Vegas — 53 G4 routes from USA
- PGD Punta Gorda — 47 G4 routes from USA
- AZA Mesa — 42 G4 routes from USA
Top destination countries on G4
- USA — 1,078 G4 routes
Tips for booking G4
Book directly on Allegiant's site — third-party platforms often miss their promotional fares. Budget for add-ons immediately: bags, seat selection, and priority boarding all cost extra and add up fast. Their strongest play is routes into SFB, PIE, LAS, and PGD, where they're frequently the only non-stop option from mid-size cities. That monopoly cuts both ways — great for availability, occasionally rough on flexibility when things go sideways. Flights between LAS and SFB cover 3,266 km, making it their longest haul, so grab a seat with extra legroom on that one. No alliance membership means zero elite reciprocal benefits.
Frequently asked questions about G4
Where does G4 fly?
G4 operates an extensive network of 1,078 routes primarily throughout the United States, connecting major cities and regional destinations across the country.
What is G4's main hub airport?
G4's primary hub is Orlando International Airport (SFB), which serves as the airline's main operational base for flights across its network.
Is G4 a legacy carrier, low-cost carrier, or regional airline?
Based on its extensive domestic route network and hub structure, G4 operates as a low-cost carrier focused on providing affordable air travel options throughout the United States.
When should I book a flight with G4, and what fare classes are available?
For the best fares, book G4 flights in advance, typically 2-4 weeks ahead of your travel date. G4 typically offers basic economy and premium fare options to suit different passenger needs and budgets.
What are G4's baggage and check-in policies?
G4 allows standard carry-on baggage for all passengers; checked baggage allowances and fees vary by fare type, so review your specific booking details. Check-in is available online 24 hours before departure and at the airport for added convenience.