ALLEGIANT LAUNCHES SERVICE TO SARASOTA AND CHARLESTON WITH FARES AS LOW AS $66*

ALLEGIANT LAUNCHES SERVICE TO SARASOTA AND CHARLESTON WITH FARES AS LOW AS $66*

PITTSBURGH April 4, 2018 — Allegiant (NASDAQ: ALGT) launches new nonstop service from Pittsburgh to Charleston, South Carolina and Sarasota / Bradenton, Florida. The company, known for its exceptional travel deals, is offering one-way fares on the new route for as low as $66.*

"We’re thrilled to launch nonstop, ultra-low-cost service from Pittsburgh to Charleston and Sarasota," said Lukas Johnson, Allegiant senior vice president of commercial. "Pittsburgh passengers have enjoyed our brand of convenient, affordable service for over three years, and we’re excited to offer flights to the historic cobblestone streets of Charleston and beautiful Sarasota beaches."

The new seasonal route from Pittsburgh International Airport (PIT):
1. Charleston, South Carolina via Charleston International Airport (CHS) – beginning April 4, 2018 with fares as low as $66.*
The new year-round route from Pittsburgh International Airport (PIT):
1. Sarasota / Bradenton, Florida via Sarasota-Bradenton International Airport (SRQ) – beginning April 11, 2018 with fares as low as $92.*

"Since starting service at Pittsburgh International Airport three years ago, Allegiant has continued to expand nonstop flights and affordable options to top leisure destinations for Pittsburgh travelers," said Allegheny County Executive Rich Fitzgerald."Our community has responded favorably to this service, and we’re delighted that Allegiant continues to grow in Pittsburgh."

"Allegiant has been a big driver of passenger growth, increased satisfaction and more affordable fares as we have increased nonstop flights and diversified the number of carriers serving Pittsburgh over the past three years," said Allegheny County Airport Authority CEO Christina Cassotis. "Allegiant has been a great partner for our region, and we look forward to more success in the future."

Allegiant offers a unique option to Pittsburgh-area travelers with low base fares and savings on rental cars and hotels. Travelers can book their entire vacation with Allegiant for less. Flight days, times and the lowest fares can be found only at Allegiant.com.

*About the introductory one-way fares: Seats are limited. Price includes taxes and fees. Fares are one way and not available on all flights. Flights between PIT and CHS must be purchased by April 6, 2018 for travel by June 10, 2018. Flights between PIT and SRQ must be purchased by April 13, 2018 for travel between April 14, 2018 and May 31, 2018. For more details, optional services and baggage fees, please visit Allegiant.com. Additional restrictions may apply.

Allegiant®
Las Vegas-based Allegiant (NASDAQ: ALGT) is focused on linking travelers to world-class leisure destinations. The airline offers industry-low fares on an all-jet fleet while also offering other travel-related products such as hotel rooms and rental cars. All can be purchased only through the company website, Allegiant.com. Beginning with one aircraft and one route in 1999, the company has grown to over 80 aircraft and more than 300 routes across the country with base airfares less than half the cost of the average domestic round-trip ticket. For downloadable press kit, including photos, visit: http://gofly.us/ToZT30iauev.

### Allegiant Public Relations Phone: 725-221-9937 Email: communications@allegiantair.com