Frontier Miles is the frequent-flyer program for Frontier Airlines, replacing the EarlyReturns program, which existed from 2003 to 2018.[70] Frontier Miles can be earned by flying Frontier Airlines, using the Frontier Airlines World MasterCard, or by spending at partner hotels, car rental chains, cruises, and merchants.[71] Frontier Miles can be redeemed for flights, magazine subscriptions, and car rentals.[72] Since February 2019, hotel stays are also part of the redemption options.[73]

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 February 2002, the airline launched its first regional product, Frontier JetExpress, initially operated by Mesa Airlines using CRJ-200 regional jets. Similar to "express" operations of other carriers, Frontier JetExpress was targeted for markets to and from Denver that do not generate traffic sufficient to support Frontier's smallest mainline jet, the Airbus A318, but could still offer lucrative business with a smaller jet.

In July 2012, Allegiant announced the future addition of the Airbus A319-100 aircraft to its fleet. The aircraft are used and formerly belonged to easyJet and Cebu Pacific. All of them are high-density A319s, fitted with four overwing exits, allowing 156 seats. Two former easyJet aircraft entered service in 2013, with another in 2014 and an additional six in 2015.[75] In December 2012, Allegiant cancelled the agreement with Cebu Pacific citing an inability to agree on economic provisions.[76] On May 1, 2013, Allegiant purchased another A319 aircraft previously operated by easyJet that would enter service in the third quarter of 2013.[77] On February 23, 2015, Allegiant purchased six more A319s from Cebu Pacific.[78]
I was a frontier fly club member for a whole year and found that their website was way to confusing to use. They would advertise a promotion but then when I clicked it and would attempt to purchase the travel itinerary it would always go up. It was disappointing. Specially because I paid a membership fee and wanted to travel. Customer service over the phone was no help. Wouldn’t do it again. Stopped flying with them over all.

Frontier offers great services and even better prices! They have a point system when you book with them, meaning eventually you can earn enough points to earn some discounted or free flights. They offer inflight entertainment and usually offer the lowest price. You get great service from the friendly staff and the aircrafts are fairly new and comfortable.
On July 1, 2010 Allegiant returned to Long Beach Airport (LGB) in Long Beach, California having previously served LGB with DC-9 jets with nonstop flights to Las Vegas (LAS) and Lake Tahoe (TVL) in 2000.[22][23] The airline also intended to fly from Bellingham International Airport and Stockton several times a week; however, there is no service at present flown between these two cities although Allegiant continues to serve Stockton with flights to Las Vegas, Phoenix/Mesa and San Diego.[24] In November 2011, Allegiant closed its Long Beach facility and consolidated all Los Angeles area flights at Los Angeles International (LAX).
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.
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