Philadelphia to Knoxville Flights on Allegiant from $39*
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Flights from Philadelphia to Knoxville
$
*Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply.
Deals from Philadelphia to Knoxville
$
From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| Philadelphia (PHL) | Knoxville (TYS) | One-way / Economy | Departing: August 16 2026 | From $39 Seen: 21 hrs ago |
| Philadelphia (PHL) | Knoxville (TYS) | One-way / Economy | Departing: August 13 2026 | From $39 Seen: 21 hrs ago |
| Philadelphia (PHL) | Knoxville (TYS) | One-way / Economy | Departing: July 5 2026 | From $47 Seen: 4 hrs ago |
| Philadelphia (PHL) | Knoxville (TYS) | One-way / Economy | Departing: July 23 2026 | From $55 Seen: 4 hrs ago |
| Philadelphia (PHL) | Knoxville (TYS) | One-way / Economy | Departing: September 28 2026 | From $62 Seen: 1 day ago |
| Philadelphia (PHL) | Knoxville (TYS) | One-way / Economy | Departing: June 25 2026 | From $62 Seen: 18 hrs ago |
*Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply.
To explore other Allegiant destinations, visit our route map. To earn 3X points on Allegiant purchases, learn more about our Allways Rewards Visa® card.
