Changing Your Allegiant Airlines Booking Smoothly

Why Flexibility Matters

Plans change. Maybe your meeting got rescheduled, a family emergency came up, or you simply want to extend your trip. Whatever the reason, knowing how to update your airline reservation matters—especially when you're flying on a budget.

Allegiant Airlines keeps fares low by charging for extras. That includes changes. If you need to switch flights, this guide breaks down how to do it without getting hit with surprise fees.

What to Know About Allegiant's Flight Change Policy

Allegiant's low-cost model means changing your flight isn't always free. Here's what you should know:

• Changes must be made at least 7 days before departure.

• Most changes include a fee and a fare difference.

• If you added Trip Flex, you can change your flight without a fee.

• Cancelling usually results in travel credit, not a cash refund.

Understanding the rules helps you plan smarter.

How to Change Your Flight Online

The fastest way to change your Allegiant booking is online. Here’s how:

1. Go to AllegiantAir.com

2. Click "Manage Travel"

3. Enter your confirmation number and last name

4. Choose the flight to modify

5. Follow the steps to change your itinerary

If you bought Trip Flex, there’s no change fee. Otherwise, you’ll pay a fee and any fare difference.

What Is Trip Flex and Is It Worth It?

Trip Flex is an optional add-on that gives you breathing room:

• Make a one-time change or cancel without a fee

• Works for both flights and vacation packages

• Must be added when you first book

If your plans aren't set in stone, Trip Flex saves money and stress.

Same-Day Changes and Rebooking Tips

Allegiant doesn’t offer traditional same-day flight changes like other airlines. But here’s what you can do:

• Cancel your original flight (fees may apply)

• Use your travel credit to book a new same-day flight if there’s availability

Tip: If you used Trip Flex, this process is easier and cheaper.

How Much Are Flight Change Fees?

Without Trip Flex, here’s what you might pay:

• Change Fee: Up to $75 per person, per segment

• Fare Difference: You'll need to cover any increase in price

All changes must be made at least 7 days before departure.

Prefer to Call? Here’s the Support Info

If you’d rather speak with someone, Allegiant’s customer service can help.

• Phone: 702-505-8888

• Hours: Daily, 5 AM to 8 PM (PST)

Agents can help with:

• Name or date changes

• Cancelling and rebooking

• Clarifying travel credit rules

How Travel Credit Works

Cancel your flight? Allegiant usually gives travel credit instead of a refund.

• Credit lasts 12 months from the issue date

• Redeem it through the Allegiant website

• It’s non-transferable and tied to the original passenger

Use "My Trips" to Stay in Control

Allegiant’s "Manage Travel" tool lets you:

• View your trip details

• Change flights online

• Add seats, bags, or hotel bookings

It’s the easiest way to adjust your trip without calling support.

Final Tips for Smooth Changes

Changing your Allegiant flight doesn’t need to be a hassle. Here’s how to make it easy:

• Know the 7-day rule

• Use the "Manage Travel" portal

• Add Trip Flex when booking

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Whether you're rescheduling, canceling, or using travel credit, being prepared keeps you in control—and helps you avoid unnecessary fees.

Frequently Asked Questions