Revived from the defunct 1950s-era Frontier in 1994 by former United Airlines pilot Rick Brown with his wife and business partner, Denver-based low-cost carrier Frontier Airlines quickly found a market flying to smaller cities overlooked by mainstream airlines and offering a rock-bottom base fare that it then compensated for by charging for baggage and seat selection.
While this low-cost model initially saw rapid success in the 2000s and early 2010s, it started running into challenges amid very slim profit margins and differentiation with the basic economy class that mainstream airlines eventually launched.
Frontier Airlines cancels Knoxville flight, calls market exit temporary
When the Iran war sent jet fuel prices skyrocketing to heights unseen in a decade at the start of 2026, carriers like Spirit Airlines were dealt the final blow while almost every airline in the world had to significantly adjust its network to optimize for only the most high-traffic routes.
Following the cuts of more than 20 underperforming routes and permanent market exits from Spokane and Sarasota at the start of the summer, Frontier Airlines just confirmed that it is canceling its only flight out of one more airport in what it hopes will be a temporary departure: the route that the airline flies between Denver International (DEN) and McGhee Tyson Airport (TYS) in Knoxville will be discontinued on Aug. 17.
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“We have instituted a planned, seasonal pause in our service at TYS, and are currently in the process of reviewing and finalizing our future schedule plans across our network,” Frontier Airlines said in its statement. “We plan to share more information publicly in the coming months.”
Serving eastern Tennessee and the Great Appalachian Valley, Knoxville’s airport has over the last year seen a period of rapid passenger growth with 3.6 million travelers recorded in 2025. Southwest Airlines also entered the airport in March 2026 and just announced a new flight between Knoxville and Las Vegas for 2027.
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“Seasonal departure according to Frontier”: McGhee Tyson on Knoxville exit
Allegiant and United Airlines also currently offer service between Denver and Knoxville. Frontier has been serving Knoxville since 2011.
McGhee Tyson also provided a statement on Frontier’s exit saying that “service will return in the future” and classifying it as a “seasonal departure according to Frontier.” Those with travel to Knoxville booked beyond the route phase-out date would be entitled to a refund to the original method of payment, according to the airline’s policy.
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Exact details on when the flight will return or what it is evaluating prior to the relaunch have not been released by the airline.
Earlier in 2026, Frontier also made significant reductions out of Orlando International (MSO) and Denver International (DEN) by scheduling cancelations of routes to St. Maarten, Salt Lake City, and San Francisco by August alongside other flight cuts from cities like Atlanta, Cleveland, Philadelphia, and Tampa.
“We periodically review and update routes based on market demand, seasonality, costs associated with operating from a particular airport, and other factors,” the airline said in past statements on flight cancelations.
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