There are a few potential reasons why the Allegiant Air phone numbers
+1 860 374 7617 or
+1 (702) 505-8888 could be continually busy:
High call volume: Airlines often experience periods of exceptionally high call volume following flight delays/cancellations, reservation issues, or other operational disruptions. If Allegiant has recently had issues that are impacting a lot of customers, their call centers could simply be overwhelmed.
Understaffing: Sometimes airlines do not adequately staff call centers to handle peaks in demand. If Allegiant has cut back on call center staffing, hold times can increase.
Technical issues: Problems with the phone system itself could also cause all lines to appear busy. Things like hardware failures or software glitches could make it impossible for calls to get through properly.
Blocked calls: Some airlines will temporarily stop accepting calls if the queues get too long. This prevents excessively long hold times even though the phones still ring as busy.
Flight Disruptions: Instances of flight disruptions, like weather-related cancellations or delays, can lead to an influx of calls as passengers seek assistance with rebooking or refunds
In any case, if the lines remain continually busy it's usually a temporary situation for Allegiant. Options would be to keep trying at off-peak hours, use the website/app for self-service, or reach out over social media if support is urgently needed on a flight disruption issue. But ongoing busy signals point to some type of larger customer service breakdown for Allegiant.