As part of its plan to stay competitive in reaction to the entry of Southwest Airlines into Denver, the company underwent a reorganization early in 2006. On April 3, 2006, Frontier created Frontier Airlines Holdings (FRNT), a holding company incorporated in Delaware to take advantage of favorable tax laws in that state. The corporate headquarters did not leave Colorado.[21]
Also in 2010, JetBlue entered into interline booking agreements with South African Airways[109] and American Airlines[110] to facilitate luggage transfers between airlines for passengers with connecting flights on a different carrier. The agreement with American included JetBlue's 18 destinations not served by American and American's 12 international flights out of New York–JFK and Boston Logan. In addition, American gave JetBlue 8 round trips slots out of Washington National in D.C. and 2 out of Westchester, New York. In return, JetBlue gave American 6 round trips out of New York–JFK. The agreement with American Airlines has since ended according to JetBlue's website.[111]
Frontier Airlines is an American ultra low-cost carrier headquartered in Denver, Colorado. The eighth-largest commercial airline in the US, Frontier Airlines operates flights to over 100 destinations throughout the United States and six international destinations, and employs more than 3,000 air-travel professionals.[15] The carrier is a subsidiary and operating brand of Indigo Partners, LLC, and maintains a hub at Denver International Airport with numerous focus cities across the US. In August 2018, Frontier began connecting passengers with Mexican low-cost carrier Volaris under a codeshare agreement.[16]
jetBlue's first major advertising campaign incorporated phrases like "Unbelievable" and "We like you, too". Full-page newspaper advertisements boasted low fares, new aircraft, leather seats, spacious legroom, and a customer-service-oriented staff committed to "bringing humanity back to air travel".[92] With a goal of raising the bar for in-flight experience, jetBlue became the first airline to offer all passengers personalized in-flight entertainment. In April 2000, flat-screen monitors installed in every seatback allow customers live access to over 20 DirecTV channels at no additional cost.[93]
Advanced Air Air Choice One Air Flamenco Air Sunshine Bering Air Boutique Air Everts Air Frontier Flying Service Gem Air Grand Canyon Airlines Grand Canyon Scenic Airlines Grant Aviation Griffing Flying Service Hageland Aviation Services Island Airways JetSuiteX Kenmore Air Key Lime Air Makani Kai Air Mokulele Airlines New England Airlines Penobscot Island Air Reliant Air Rectrix Aviation San Juan Airlines Scenic Airlines Seaborne Airlines Servant Air Southern Airways Express Star Marianas Air Surf Air Taquan Air Tradewind Aviation Tropic Ocean Airways Ultimate Air Shuttle Utah Airways Vieques Air Link Warbelow's Air Ventures Wright Air Service
^ For comparison, fleet ages as of 2018: Southwest, 10.7 years; JetBlue, 9.7 years; Spirit, 5.4 years; WestJet, 9.7 years; Volaris, 4.3 years, Allegiant, 17 years, VivaAerobús, 5.2 years; Sun Country, 14.4 years. Information from Airfleets.net: Southwest, JetBlue, Spirit, WestJet, Volaris, Allegiant, VivaAerobús, Sun Country. (listed airlines from List of largest airlines in North America)
After making a codeshare agreement with Lufthansa that went into effect in 2010, jetBlue transitioned to the Sabre reservation system used by Lufthansa,[107] enabling the airlines to sell tickets on each other's flights, transfer luggage and passengers between the two carriers, and combine frequent flyer programs,.[108] By making use of JetBlue's North America routes as a feeder network, the agreement put Lufthansa in a position to operate quasi-hubs in New York–JFK and Boston Logan.

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).[66] However, the service was short lived as Maverick encountered financial challenges and then ceased all flights.
In July 2016, jetBlue announced commercial flights from the United States to Cuba will commence in late August.[64][65] On August 31, 2016, JetBlue Flight 387 from Fort Lauderdale–Hollywood International Airport to Abel Santamaría Airport, in Santa Clara, became the first scheduled commercial flight between the United States and Cuba in 55 years.[66] Only charter flights were allowed under previous rules, which required that passengers had to arrive more than 4 hours before the scheduled departure and often endure long lines for documentation checks, late flight arrivals, and pay high baggage fees.[67]
Frontier was ranked in an airline quality rating report by Embry-Riddle Aeronautical University and Wichita State University in 2015 as one of the five worst airlines in the United States, especially due to its rate of customer complaints and bumped passengers.[88][51][89] The airline also had relatively poor on-time performance, and the waiting time for help when calling the airline on the phone was reported to have risen to two hours or more.[90]
Frontier Airlines is an American ultra low-cost carrier headquartered in Denver, Colorado. The eighth-largest commercial airline in the US, Frontier Airlines operates flights to over 100 destinations throughout the United States and six international destinations, and employs more than 3,000 air-travel professionals.[15] The carrier is a subsidiary and operating brand of Indigo Partners, LLC, and maintains a hub at Denver International Airport with numerous focus cities across the US. In August 2018, Frontier began connecting passengers with Mexican low-cost carrier Volaris under a codeshare agreement.[16]
Founded in 1997 as WestJet Express, the company was renamed as Allegiant Air and started operations under the new name in 1998. From there on, company went on to become one of the most favorite low-cost airlines of America with their unmatched reliability, customer care and best in-class deals. Owned by Allegiant Travel Co. Allegiant Air have their headquarters in Enterprise, Nevada near Las Vegas. Today it has more than 1300 employees and over a billion USD capitalizations.
jetBlue's first major advertising campaign incorporated phrases like "Unbelievable" and "We like you, too". Full-page newspaper advertisements boasted low fares, new aircraft, leather seats, spacious legroom, and a customer-service-oriented staff committed to "bringing humanity back to air travel".[92] With a goal of raising the bar for in-flight experience, jetBlue became the first airline to offer all passengers personalized in-flight entertainment. In April 2000, flat-screen monitors installed in every seatback allow customers live access to over 20 DirecTV channels at no additional cost.[93]
Air travel is undoubtedly the fastest and the safest way to travel which opens up a market for several companies to become your preferred airlines. In such a scenario, when the passenger is literally spoilt for choice and can easily acquire the best deals easily, it sometimes ironically becomes difficult for one to choose any one airline amongst so many. This is why an airline which can make permanent customers out of first time fliers is the one that can actually survive. One such airline is the Allegiant Air. 

On October 22, 2008, jetBlue opened its new primary hub at John F. Kennedy International Airport (JFK), Terminal 5, or simply T5. The mostly new terminal, costing approximately $800 million,[41] partially encircles the historic TWA Flight Center, the former Trans World Airlines terminal designed by Eero Saarinen, which remains closed. According to the plan, passengers will eventually be able to check in for flights in the landmark building, then transfer to the new structure via the original passenger departing-arrival tubes from Saarinen's original terminal and its 1969 addition by Roche-Dinkeloo.[42] 

As jetBlue gained market share, they found a unique positioning where they competed with other low-cost carriers (e.g. Southwest, and Frontier), as well as major carriers (e.g. American, United, and Delta). Amenities such as their live in-flight television, free and unlimited snack offerings, comfortable legroom, and unique promotions fostered an image of impeccable customer service that rivaled the major airlines, while competitive low fares made them a threat to low-cost no-frills carriers as well.[94]
On August 4, 2008, the Associated Press reported that jetBlue would replace their recycled pillows and blankets with an "eco-friendly" pillow and blanket package that passengers would have to purchase for use. Each package will cost $7 and will include a $5 coupon from retailer Bed, Bath and Beyond. This decision is the latest in a series of moves designed to increase revenue. jetBlue told the Associated Press that it expects to collect $40 million from passengers selecting seats with extra legroom and $20 million from passengers paying $15 to check a second bag. As of September 8, 2008 JetBlue charges passengers $10–30 for an extended-leg-room seat depending on the length of the flight.[37]

Advanced Air Air Choice One Air Flamenco Air Sunshine Bering Air Boutique Air Everts Air Frontier Flying Service Gem Air Grand Canyon Airlines Grand Canyon Scenic Airlines Grant Aviation Griffing Flying Service Hageland Aviation Services Island Airways JetSuiteX Kenmore Air Key Lime Air Makani Kai Air Mokulele Airlines New England Airlines Penobscot Island Air Reliant Air Rectrix Aviation San Juan Airlines Scenic Airlines Seaborne Airlines Servant Air Southern Airways Express Star Marianas Air Surf Air Taquan Air Tradewind Aviation Tropic Ocean Airways Ultimate Air Shuttle Utah Airways Vieques Air Link Warbelow's Air Ventures Wright Air Service
JetBlue Technology Ventures (JTV) [137] is a wholly owned subsidiary of JetBlue that was established in February 2016.[138] JTV is the venture capital arm of JetBlue that invests in and partners with early-stage startups in the travel, hospitality, and transportation space. Its mission is to improve the end-to-end experience of travelers everywhere. As of November 2018, JTV has invested in 21 startups, including hybrid planes,[139] machine learning algorithms,[140] and ground transportation.[141] Investments range in size from $250,000 to $1 million.[142]
jetBlue's first major advertising campaign incorporated phrases like "Unbelievable" and "We like you, too". Full-page newspaper advertisements boasted low fares, new aircraft, leather seats, spacious legroom, and a customer-service-oriented staff committed to "bringing humanity back to air travel".[92] With a goal of raising the bar for in-flight experience, jetBlue became the first airline to offer all passengers personalized in-flight entertainment. In April 2000, flat-screen monitors installed in every seatback allow customers live access to over 20 DirecTV channels at no additional cost.[93]
On September 9, 2014, Frontier introduced an updated livery,[86] as part of a rebranding that saw the spokesanimals' roles increase. The new livery reintroduced a green "FRONTIER" typeface to the fuselage, featuring the stylized "F" designed by Saul Bass for the original Frontier in 1978. Each aircraft features the name of the animal featured on its tail near the nose of the aircraft for easier identification. Currently about twenty five aircraft in the Frontier fleet feature the new livery.
In 2009, jetBlue announced that it was looking for a new headquarters location, and was considering moving either within the New York City metropolitan area or to the Orlando, Florida area.[83] In April 2009, Helen Marshall, the president of the Borough of Queens, said that the City of New York was trying to keep JetBlue in the city;[84] in January 2010, the CEO of JetBlue, Dave Barger, and Governor of Florida Charlie Crist met in Tallahassee, Florida to discuss a possible move to Orlando.[85] A decision was expected by March 2010,[86] although a move would not happen until 2012, when its lease in the Forest Hills Tower expired.[87] 
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