Allegiant wants you to book online — the fares are lowest there and the site is built to keep calls out of the call centre. But if you need the phone, the number is (702) 505-8888, 24 hours a day, and expect a 30-minute wait on most days (Allegiant posts that hold estimate right on its own contact page). That single 702 line covers reservations, customer care, changes, and general questions. There’s a text line at +1 (866) 432-6165 and a virtual assistant called AVA on the site, but neither will book a new flight for you from scratch — those still route to a human on 702 if the query gets complex. Numbers verified April 2026 on allegiantair.com.
In This Article
The numbers — and why there are so few of them
Reservations Center / Customer Care: (702) 505-8888. That’s it. Unlike American or Delta, Allegiant doesn’t split the line into booking, elite, and customer-service queues. Everyone gets the same 702 number, and the menu routes you internally. The upside is simplicity. The downside is that reservation waits and post-flight complaint waits share the same queue, so you might hold 40 minutes just to ask about a fare quote.
Other useful numbers — not for reservations, but worth knowing: Baggage Service Office (866) 719-3910, Lost and Found (866) 719-3910 (same line), TTY (702) 430-3283, and the text-us line +1 (866) 432-6165 for simpler post-booking questions. Baggage and Lost-and-Found get their own number for a reason — don’t call 702 to chase a delayed bag, you’ll be transferred.
When to call — and the fee nobody mentions
Here’s the catch: Allegiant charges a booking fee — $18 per person, per segment at time of writing — when you book through the call centre instead of online. That’s not a scam, it’s in the airline’s Customer Service Plan. The $18 fee sits on top of the fare. Book the same flight yourself on allegiantair.com and you avoid it. The only reasons to accept the fee: you need a special-assistance booking the site won’t price, you’re using a voucher or credit the site can’t apply automatically, or a group of 10+ passengers where the site kicks you to Group Reservations anyway.
Best times to call: Tuesday through Thursday, mid-morning Pacific (Allegiant’s call centre is in Las Vegas). Avoid Mondays entirely — the queue is always 45+ minutes then. Avoid calling the first day a weather event affects the system; wait 24 hours and half the rebooked passengers will have cleared.
My take: don’t waste the phone call on a simple seat or bag add. AVA (the chat bot on the website) actually handles those well, and you skip the hold and the fee. Save the call for anything the site refuses — refund escalations, complex vouchers, inter-segment rebooking when Allegiant cancels a leg.
What Allegiant calls aren’t like other airlines
Allegiant doesn’t fly daily between most city pairs. A route like Belleville, IL to Punta Gorda, FL might run Monday and Friday only. That matters for phone calls because if your flight is cancelled, there may not be a same-day rebook. The agent will offer you the next departure in that city pair, which could be three days later, plus a full refund if you don’t want to wait. It’s not bad service — it’s the structure of Allegiant’s schedule. Know this before you dial so you don’t argue with a rep who genuinely cannot put you on a nonexistent flight.
Also: Allegiant doesn’t interline. If your flight is cancelled, the airline cannot put you on Southwest, American, or anyone else. Your options are refund or next Allegiant flight on that route, full stop. That’s why having a backup plan on a one-shot-a-week route matters — Allegiant’s cheap fare won’t save your trip if the plane doesn’t fly and you’re 200 miles from the nearest airport another airline serves.
Booking online — the path Allegiant wants you to take
Start at allegiantair.com. The home page surfaces the low fare calendar — always check that before committing to a date, because Allegiant’s single-direction pricing swings by $40-60 across a week. Bundle deals (flight + hotel + car) often come out cheaper than booking the flight alone, even if you don’t use the hotel — weird but true, check both paths before paying.
Seat selection, carry-on, priority boarding, and baggage are all à la carte. The unbundled fare is the lowest; adding anything is $20-60 per item depending on the route. My opinion, take it or leave it: skip the seat assignment on a 2-hour Allegiant flight unless you absolutely need to sit with someone. Their auto-assign isn’t punishing, and you’ll save $20. Do pay for the carry-on if you can’t fit everything in a personal-item-sized bag, because the gate fee is roughly double what you’d pay in advance.
For Trips Manager: log into “My Allegiant” to change, cancel (within 24 hours of purchase for a full refund, per DOT rules), or modify your itinerary. Changes outside the 24-hour window incur a per-segment change fee that varies by route and timing — the site quotes it before you commit. Want Allegiant’s own page? Bookmark allegiantair.com/reservations-ticketing for the booking FAQ.
The short version
Dial (702) 505-8888 for any Allegiant reservation help, 24/7, but expect 30+ minute holds and an $18-per-person fee if you book through the agent instead of online. Use allegiantair.com or the app for fare search, seat, bag, and 24-hour cancellations — it’s faster and free. Allegiant doesn’t interline and doesn’t fly daily on most routes, so if your flight cancels, your only options are the next Allegiant departure (could be days out) or a refund. If you’re weighing Allegiant against another budget-leaning US carrier, our Sun Country reservations guide covers a similar niche with a different trade-off, and our Frontier and Spirit pages cover the other two big US ultra-low-cost carriers.
.jpg){kind=link}