G4 · United States
Allegiant Air Flights — Book, Change & Cancel
Allegiant focuses on low-cost nonstop leisure routes between smaller U.S. cities and popular vacation destinations. Whatever you need — a new booking, a date change, a cancellation, a refund or a seat upgrade — our experts handle it by phone, 24/7.
💸 fares from $69 🔁 Changes & cancellations
⬆️ Seat upgrades
⏱️ 24/7 agents
📞
Call for Allegiant Air help+1 (855) 302-0422
Popular Allegiant Air routes
Tap a route for details and fares, or call +1 (855) 302-0422 to book any Allegiant Air flight.
Las Vegas → Orlando
from $269
Las Vegas → Los Angeles
from $69
Las Vegas → Phoenix
from $69
Orlando → Los Angeles
from $279
Orlando → Phoenix
from $269
Phoenix → Los Angeles
from $99
How to change a Allegiant Air flight
As a low-cost carrier, Allegiant Air typically charges a change or cancellation fee that gets smaller the earlier you act — and is often waived when you change far enough in advance. Fares are usually non-refundable unless you add a flexibility option. Allegiant fares are usually non-refundable; adding Trip Flex at booking lets you make one change without the standard fee.
Fastest way to change: Call +1 (855) 302-0422 with your confirmation code.
Our agents will check your fare rules, find the best new flight, and rebook you in minutes — 24/7.
Cancelling a Allegiant Air flight & getting a refund
Under U.S. Department of Transportation rules, you can cancel within 24 hours of booking for a full refund if you booked at least 7 days before departure. If Allegiant Air cancels your flight or makes a major schedule change, you're entitled to a cash refund — not just a credit. Voluntary cancellations of non-refundable fares are typically returned as credit, minus any applicable fee.
For the full breakdown, see our guides on cancelling a flight and getting a refund and the 24-hour cancellation rule — or just call and we'll handle it.
Allegiant Air seat selection & upgrades
Allegiant Air charges separately for seat selection, including bigger up-front seats. There's no traditional first class, but you can buy extra legroom, priority boarding and carry-on/checked bags.
Allegiant Air help & guides
Allegiant Air Change & Cancellation Policy
Allegiant Air Check-In & Boarding Guide
Allegiant Seat Selection Guide
Allegiant Baggage Fees Explained
Allegiant Carry-On Rules & Size Guide
Frequently asked questions
How do I change my Allegiant Air flight?
You can change a Allegiant Air flight online, at the airport, or fastest of all by calling our agents at +1 (855) 302-0422. As a low-cost carrier, Allegiant Air typically charges a change or cancellation fee that gets smaller the earlier you act — and is often waived when you change far enough in advance. Fares are usually non-refundable unless you add a flexibility option. Allegiant fares are usually non-refundable; adding Trip Flex at booking lets you make one change without the standard fee. Rules vary by fare and change often — call to confirm yours.
Can I cancel my Allegiant Air flight and get a refund?
Under U.S. Department of Transportation rules, you can cancel within 24 hours of booking for a full refund if you booked at least 7 days before departure. If Allegiant Air cancels your flight or makes a major schedule change, you're entitled to a cash refund — not just a credit. Voluntary cancellations of non-refundable fares are typically returned as credit, minus any applicable fee. Not sure which applies to your ticket? Call +1 (855) 302-0422 and we'll check in minutes.
How much does it cost to change a Allegiant Air flight?
It depends on your fare type and route, and prices change constantly, so we don't quote a flat figure. Expect a tiered fee that shrinks the earlier you change. Call +1 (855) 302-0422 for your exact cost.
Can I upgrade my seat on Allegiant Air?
Allegiant Air charges separately for seat selection, including bigger up-front seats. There's no traditional first class, but you can buy extra legroom, priority boarding and carry-on/checked bags. Call +1 (855) 302-0422 and we'll find the best upgrade option for your trip.
FareDeal Expert is an independent travel agency and is not affiliated with, endorsed by, or sponsored by Allegiant Air. All airline names and trademarks belong to their respective owners. Fares shown are estimates; final pricing and policies are confirmed at booking.