In December 2016, a winter weather event disrupted fleet operations, causing Frontier to delay or cancel up to 70% of their flights during the peak of the crisis, many without any advance notice. On the weekend of December 17, the storm caused major delays at Frontier's Denver hub, and the effects of the storm were felt throughout the fleet. Flights were delayed or canceled at airports across the country, as in some cases, planes were ready to depart, but there were no rested flight crews available to service the flight. The head of Frontier's pilot's union issued a statement criticizing the companies' handling of the event, comparing the airline to a "house of cards". Frontier received over 30,000 refund requests for canceled flights resulting from the event.
In April 2013, Frontier introduced a modified version of that livery, keeping the iconic animals on aircraft tails, but dropping its former slogan and replacing "FRONTIER" with "FLYFRONTIER.COM", the company's website, in support of new marketing that focused heavily on the airline's web presence. This livery was only painted on a few newly delivered aircraft. Aircraft in the older livery received "FLYFRONTIER.COM" titles on engine nacelles.
September 21, 2005: Flight 292 en route from Burbank, California, to New York City performed an emergency landing at Los Angeles International Airport (pictured on the right) following a failure of the front landing gear during retraction when it turned 90 degrees. The plane landed after holding for about three hours to burn fuel and therefore lighten the aircraft. The aircraft came to a stop without incident on runway 25L, the second-longest runway at LAX. The only apparent damage to the plane upon landing was the destruction of the front wheels, which were ground down to almost semicircles, and the tires; the front landing strut held. The passengers were unable to see themselves landing despite the DirecTV service in each seat, as they were instructed to brace.
A November 2016 analysis by the Tampa Bay Times noted that Allegiant's planes were four times more likely to have in-flight failures than other major US airlines. A 60 Minutes report by CBS News in 2018 continued to investigate the issues first raised by the Tampa Bay Times. Public records cited in the investigation found that the airline had more than 100 serious mechanical incidents between January 1, 2016 and October 31, 2017, including "mid-air engine failures, smoke and fumes in the cabin, rapid descents, flight control malfunctions, hydraulic leaks and aborted takeoffs." Other public records further revealed that Allegiant aircraft, on average, were nearly three and a half times more likely to have mid-air breakdowns than American, United, Delta, JetBlue and Spirit.
During the last few days of June and the first few days of July 2015, jetBlue began charging for bags in certain booking classes, leaving Southwest Airlines the only major U.S. carrier to not charge for bags. For the classes in which bag check fees are charged (generally the lowest class of fares offered; jetBlue offers 3 classes of fares), the cost is $20 for the first bag and $35 for the second, which is the lowest in the United States besides Frontier Airlines with similar prices.
The company had charter contracts with Caesars Entertainment to ferry customers to Caesars casino properties through Reno-Tahoe International Airport, Laughlin/Bullhead International Airport and Tunica Municipal Airport. These contracts ended in December 2012 when Caesars Entertainment signed a new contract with Republic Airways to provide the charter service to Caesars properties in Atlantic City, New Jersey, Tunica, Mississippi and Laughlin, Nevada.
In 1997, Maverick Airways was operating code share service for Frontier with de Havilland Canada DHC-7 Dash 7 STOL capable turboprops between Denver (DEN) and two destinations in Colorado: Grand Junction (GJT) and Steamboat Springs (SBS). However, the service was short lived as Maverick encountered financial challenges and then ceased all flights.
Allegiant already flies into many major airports, including McCarran International (Las Vegas) and Fort Lauderdale-Hollywood International Airport. In June 2013, Allegiant deviated from this strategy with plans to compete with Southwest Airlines by offering direct flights between Las Vegas and Austin, a medium hub served by 10 carriers with non-stop routes to over 40 destinations. The airline also flies less frequently compared to the major airlines, operating routes two or three times per week. That requires fewer crews and allows less time-pressured aircraft maintenance.
In an effort to focus on regional contract flights for major carriers, Republic Airways Holdings announced in January 2012 its intention to sell or spin off Frontier. On January 26, 2012, Republic Airways Holdings appointed former US Airways and Gate Gourmet CEO David Siegel as President and CEO of Frontier Airlines. Republic also added new senior officers for Frontier's finance and commercial team, among other changes in the executive leadership team. Siegel and other Frontier executives moved to Denver where Frontier is headquartered in order to facilitate management of all aspects of Frontier during its separation process from Republic and continue its transformation into an ultra-low-cost carrier.
I was booked for a trip out of Santa Barbara to Denver then to Chicago. I have a brain injury and had wheel chair assistant due to my injury. Our flight was delayed for 6 hours at Santa Barbara which is were my daughter lives. I was going to reschedule my flight but was given a phone number to the hotel. This with the airport assistant made me feel comfortable enough to continue my travel. At the Denver airport was when we were told there was going to be no hotel. Thank God one other person was in the same situation as I was. My assistant took me to McDonald’s for food then took me to our gate. So from 11:00 PM till our fight at 6:30Am I was left with a stranger. We slept on the floor for a few hours. I was afraid to leave for food the next morning. Needless to say I was dissatisfied with the lack of communication about no hotel. My safety wasn’t a concern of your airline. My back still hurts after two days. I hope after this review your company will take others with disabilities into consideration before making decisions that could put them in a potentially dangerous situation.
Allegiant Air has been closely monitored by the FAA due to many emergency landings and aborted takeoffs. ABC interviewed a former Allegiant mechanic, who said "Dedicated steps were not being performed with maintenance manuals or even with general practices, before an aircraft is released." Many of these incidents had involved Allegiant's aging MD-80 aircraft, which as of November 2018 have been replaced by newer Airbus A320 family aircraft. 46 of the 86 aircraft have made emergency landings, all of which were on MD-80s. The average age of Allegiant's MD-80 fleet was 29 years compared to less than 13 years for its Airbus fleet.
JetBlue's in-flight options consist of gate-to-gate Fly-Fi service, offering over one hundred channels of DIRECTV, Sirius XM Radio, and movies, and on the Airbus A321, a 15″ interactive video screen which is not available on the rest of the fleet. JetBlue's partnership with Amazon lets customers watch Amazon Prime videos by connecting to Wi-Fi and downloading the Amazon Video app on their mobile phone or tablet. The in-flight WiFi under the "Fly-Fi" network is complimentary on all flights, at speeds of 12–15 megabits per second.