In November 2016, Allegiant Airlines ferried 203,917 passengers to and from Las Vegas. But as impressive as that might sound, it doesn't even place Allegiant in the top five -- behind number-five carrier Spirit Airlines, at 277,439, by nearly 27%.
Tops for the market -- with no one even close -- was Southwest Airlines, carrying 1,620,893 air travelers. A distant second was American Airlines, carrying 390,692. Rounding out the top five were United Airlines (364,677), Delta (357,695), and Spirit.
Over the first 10 months of 2016 (McCarran International Airport, which provides the passenger numbers, has yet to aggregate the data from November and December), Allegiant has brought 1,988,943 souls into and out of Sin City, a year-to-date change increase of 11% over 2015.
For all of 2015, Allegiant flew 3,101,161 people to and from Las Vegas, a 15% upswing from 2014's 2,697,878 total. In 2015, Allegiant represented 1.4% of McCarran's 45.4 million passenger loads, so it's got a long way to grow.
Its low-cost base-price strategy leads to some unconventional policies. First, flights are sold exclusively on AllegiantAir.com and not via any online travel agents (Expedia, Travelocity, etc.), and there’s a $15 charge for phone-in reservations (along with a number of other upsells). Allegiant Air doesn’t have any sort of frequent-flyer program. The airline charges for carry-on bags (only one other, Spirit, does that) and gate-checked bags. Snacks are never offered on Allegiant Air flights, and seats on Allegiant Air aircraft don’t have a reclining mechanism. (seats come pre-reclined).
So, though you like it, Allegiant isn’t for everyone.