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TYS route changes · 2025 to 2027

New routes at Knoxville: every launch and exit.

A new airline, a returning one, a departing one and a run of Allegiant additions. Here is every TYS route change from 2025 to 2027, dated and sourced, filterable by airline and year.

Photo: Pexels

Short answer

Since 2025 Knoxville gained Southwest (from March 5, 2026: Nashville, Baltimore, Dallas Love, Orlando, then Denver, Tampa and Austin), United to Newark (Sept 24, 2026) and Allegiant routes to Sarasota, Gulf Shores, Dulles, Memphis, Key West and Philadelphia. Frontier left after August 17, 2026. Southwest Las Vegas is announced for March 2027.

Net growth

The changes in numbers

10launches on the timeline, 2025 to 2026.
14destinations that gained a new airline or a new nonstop.
1airline exit: Frontier, August 2026.
36nonstop destinations reached in 2025, an airport record.

Timeline

Every change, in order.

Filter by type, airline or year. Every entry links to its source.

2025 to 2027 at TYS16 events

  1. Sarasota/Bradenton

    LaunchAllegiant SRQ

    Allegiant starts Knoxville to Sarasota/Bradenton, up to twice a week.

    Source: McGhee Tyson Airport

  2. Gulf Shores/Orange Beach

    LaunchAllegiant GUF

    Allegiant starts seasonal summer service to Gulf Shores, Alabama.

    Source: McGhee Tyson Airport

  3. Washington Dulles

    LaunchAllegiant IAD

    Allegiant adds Dulles, joining United on the route.

    Source: McGhee Tyson Airport

  4. Southwest is coming

    AnnouncementSouthwest BNA BWI DAL MCO

    Southwest announces Knoxville service from March 5, 2026: five daily round trips to Nashville, Baltimore, Dallas Love Field and Orlando.

    Source: McGhee Tyson Airport

  5. Memphis

    LaunchAllegiant MEM

    Allegiant starts seasonal Knoxville to Memphis, twice a week. The airport's nonstop page no longer lists it, but Allegiant still sells it.

    Source: McGhee Tyson Airport, Allegiant

  6. Key West

    LaunchAllegiant EYW

    Allegiant's first Knoxville to Key West flight. Treated as seasonal (winter and spring).

    Source: McGhee Tyson Airport

  7. Philadelphia announced

    AnnouncementAllegiant PHL

    Allegiant announces twice-weekly Philadelphia service for May 2026.

    Source: WVLT

  8. Southwest arrives

    LaunchSouthwest BNA BWI DAL MCO

    Southwest's first Knoxville flight, "Tennessee One" from Nashville, gets a water-cannon salute. Nashville twice daily; Baltimore, Dallas Love Field and Orlando daily.

    Source: McGhee Tyson Airport, AirlineGeeks, WSMV

  9. Philadelphia

    LaunchAllegiant PHL

    Allegiant starts twice-weekly Philadelphia, alongside American.

    Source: WVLT, Philadelphia International Airport

  10. Denver and Tampa

    LaunchSouthwest DEN TPA

    Southwest adds seasonal weekend flights to Denver and Tampa. WVLT reported a June start; AirlineGeeks said spring.

    Source: WVLT, AirlineGeeks

  11. United returns to Newark

    AnnouncementUnited EWR

    United announces twice-daily Knoxville to Newark from September 24.

    Source: WVLT

  12. Las Vegas announced

    AnnouncementSouthwest LAS

    Southwest announces Las Vegas to Knoxville for March 2027, without an exact start date.

    Source: The Points Guy, AirlineGeeks

  13. Frontier leaves

    ExitFrontier DEN

    Frontier's last scheduled Knoxville to Denver flight, its only TYS route. The airport said Frontier indicated plans to come back with seasonal flying.

    Source: Hoodline

  14. Newark, twice daily

    LaunchUnited EWR

    United Express starts twice-daily Newark, joining Allegiant's 2 to 3 weekly flights.

    Source: WVLT

  15. Austin

    LaunchSouthwest AUS

    Southwest begins seasonal Austin service, per a July trade report; WVLT had reported an October start. Allegiant also flies Austin seasonally.

    Source: Bolt Flight, WVLT

  16. Southwest Las Vegas begins

    AnnouncementSouthwest LAS

    Announced start month for Southwest's Las Vegas flights, joining Allegiant on the route.

    Source: The Points Guy, AirlineGeeks

Airlines today

New airline, new reach

How the six airlines' Knoxville networks look now, by number of destinations.

  1. Allegiant21
  2. Southwest7
  3. American6
  4. United5
  5. Delta4
  6. Avelo1
Explore each airline's network →
Nashville's skyline across the Cumberland River, with the twin-spired AT&T Building above the riverfront's historic brick buildings
Southwest, March 2026Nashville"Tennessee One," the first Southwest flight.
The Southernmost Point buoy in Key West, Florida, painted "90 Miles to Cuba", beside the open sea
Allegiant, October 2025Key WestSeasonal.
The Brooklyn Bridge and the Lower Manhattan skyline with One World Trade Center at golden hour, seen from the East River
United, September 2026NewarkTwice daily.
The Las Vegas Strip at dusk with the Bellagio fountains, Caesars Palace and the Paris Las Vegas Eiffel Tower
Southwest, March 2027Las VegasAnnounced.

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Related

Questions

What new flights does Knoxville have?
Since 2025: Allegiant added Sarasota, Gulf Shores, Dulles, Memphis, Key West and Philadelphia; Southwest arrived on March 5, 2026 with Nashville, Baltimore, Dallas Love Field and Orlando, then Denver, Tampa and Austin; United returned to Newark on September 24, 2026.
When did Southwest start flying from Knoxville?
March 5, 2026. The first flight, nicknamed "Tennessee One", came from Nashville.
Is Frontier still at Knoxville?
No. Frontier's last scheduled flight, to Denver, was August 17, 2026. The airport said Frontier indicated plans to return with seasonal flying; nothing was scheduled at our check.
What routes are coming to Knoxville in 2027?
Southwest has announced Las Vegas service starting in March 2027. Allegiant already flies Las Vegas.
How many nonstops does Knoxville have now?
36 destinations as of October 19, 2026. The airport said it reached 36 in 2025, the most in its history.

Sources

  1. McGhee Tyson Airport: Allegiant Sarasota service
  2. McGhee Tyson Airport: Allegiant begins nonstop service to Gulf Shores, AL
  3. McGhee Tyson Airport: Allegiant announces new routes to Florida, Alabama and D.C.
  4. McGhee Tyson Airport: Southwest Airlines starting service to TYS March 2026 (Aug 14, 2025)
  5. McGhee Tyson Airport: Allegiant begins nonstop service to Memphis, TN
  6. Allegiant: flights from Knoxville
  7. McGhee Tyson Airport: Allegiant begins nonstop service to Key West, FL
  8. WVLT: Allegiant to add new nonstop destination from Knoxville (Nov 18, 2025)
  9. AirlineGeeks: Southwest starts service at new airport (Mar 10, 2026)
  10. WSMV: Southwest flights between Knoxville and Nashville begin this week (Mar 3, 2026)
  11. Philadelphia International Airport: Allegiant launch
  12. WVLT: Southwest Airlines adding new seasonal flight from Knoxville (Feb 14, 2026)
  13. WVLT: United adds flight from McGhee Tyson to one of the nation's largest airports (Jul 16, 2026)
  14. The Points Guy: Southwest March 2027 expansion (Jul 17, 2026)
  15. AirlineGeeks: Southwest adds 19 new routes for spring 2027 (Jul 16, 2026)
  16. Hoodline: Frontier bails on Knoxville, hints at seasonal comeback (Jul 21, 2026)
  17. Bolt Flight: Southwest to launch 23 new nonstop routes through early 2027 (Jul 1, 2026)
  18. McGhee Tyson Airport: a record year for air service (36 nonstops in 2025)
  19. McGhee Tyson Airport: nonstop flights (airport page, 35 cities)