Travel with Axel,
get the best price.

Route overview: Philadelphia to Knoxville (TYS) flight deals

Philadelphia → Knoxville

Jan 21, 2027 · return Jan 31, 2027

PHL → TYS1 adulteconomyRound trip

8 flight options · 4 airlines

Nonstop flights

Thu, Jan 21 – Sun, Jan 31

American Airlines
9:09 amPHL
2h 12m
Nonstop
11:21 amTYS
American Airlines
6:17 pmTYS
1h 53m
Nonstop
8:10 pmPHL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 31

American Airlines
1:21 pmPHL
2h 6m
Nonstop
3:27 pmTYS
American Airlines
6:17 pmTYS
1h 53m
Nonstop
8:10 pmPHL

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 – Sun, Jan 31

Southwest Airlines
2:55 pmPHL
4h 55m
BNA · 1h 45m
7:50 pmTYS
Southwest Airlines
5:15 pmTYS
4h 55m
BNA · 1h 50m
10:10 pmPHL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 31

United Airlines
3:05 pmPHL
4h 31m
IAD · 1h 27m
7:36 pmTYS
United Airlines
7:35 pmTYS
3h 55m
IAD · 1h
11:30 pmPHL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 31

Delta Air Lines
12:22 pmPHL
5h 27m
DTW · 1h 56m
5:49 pmTYS
Delta Air Lines
11:43 amTYS
4h 52m
DTW · 1h 29m
4:35 pmPHL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 31

Delta Air Lines
11:36 amPHL
4h 21m
ATL · 1h 9m
3:57 pmTYS
Delta Air Lines
11:43 amTYS
4h 52m
DTW · 1h 29m
4:35 pmPHL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 31

American Airlines
3:33 pmPHL
5h 52m
DCA · 2h 41m
9:25 pmTYS
American Airlines
6:17 pmTYS
1h 53m
Nonstop
8:10 pmPHL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 31

American Airlines
3:06 pmPHL
4h 25m
CLT · 1h 12m
7:31 pmTYS
American Airlines
6:17 pmTYS
1h 53m
Nonstop
8:10 pmPHL

Round-trip total · 1 adult · Taxes included

Make this trip yours

PHL ⇄ TYS

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, American Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Live price for these dates: opening any fare on this page checks it live and shows the current bookable total for 1 adult. Check live prices for Philadelphia (PHL) to Knoxville (TYS), Jan 21, 2027 · return Jan 31, 2027

Route overview: Philadelphia to Knoxville (TYS) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-01-21 → 2027-01-31American AirlinesAA5168 / AA5609$323.002026-10-29T01:56:05Z
2027-01-21 → 2027-01-31Southwest AirlinesWN2080 + WN31 / WN463 + WN2825$275.502026-10-29T01:56:05Z
2027-01-21 → 2027-01-31United AirlinesUA4575 + UA4914 / UA4040 + UA4558$294.502026-10-29T01:56:05Z
2027-01-21 → 2027-01-31Delta Air LinesDL2331 + DL4989 / DL5091 + DL1391$304.002026-10-29T01:56:05Z
2027-01-21 → 2027-01-31American AirlinesAA6014 / AA5609$323.002026-10-29T01:56:05Z
2027-01-21 → 2027-01-31Delta Air LinesDL2270 + DL4931 / DL5091 + DL1391$304.002026-10-29T01:56:05Z
2027-01-21 → 2027-01-31American AirlinesAA5437 + AA5484 / AA5609$304.002026-10-29T01:56:05Z
2027-01-21 → 2027-01-31American AirlinesAA567 + AA5301 / AA5609$304.002026-10-29T01:56:05Z

2027-01-21 → 2027-01-31 · $323.00

  • American Airlines AA5168: PHL 2027-01-21 09:09:00 → TYS 2027-01-21 11:21:00; nonstop; 132 minutes. Local airport times.
  • American Airlines AA5609: TYS 2027-01-31 18:17:00 → PHL 2027-01-31 20:10:00; nonstop; 113 minutes. Local airport times.

2027-01-21 → 2027-01-31 · $275.50

  • Southwest Airlines WN2080 / WN31: PHL 2027-01-21 14:55:00 → TYS 2027-01-21 19:50:00; 1 stop(s) via BNA; 295 minutes. Local airport times.
    • WN2080: PHL 2027-01-21 14:55:00 → BNA 2027-01-21 16:10:00; layover at BNA: 105 minutes.
    • WN31: BNA 2027-01-21 17:55:00 → TYS 2027-01-21 19:50:00.
  • Southwest Airlines WN463 / WN2825: TYS 2027-01-31 17:15:00 → PHL 2027-01-31 22:10:00; 1 stop(s) via BNA; 295 minutes. Local airport times.
    • WN463: TYS 2027-01-31 17:15:00 → BNA 2027-01-31 17:15:00; layover at BNA: 110 minutes.
    • WN2825: BNA 2027-01-31 19:05:00 → PHL 2027-01-31 22:10:00.

2027-01-21 → 2027-01-31 · $294.50

  • United Airlines UA4575 / UA4914: PHL 2027-01-21 15:05:00 → TYS 2027-01-21 19:36:00; 1 stop(s) via IAD; 271 minutes. Local airport times.
    • UA4575: PHL 2027-01-21 15:05:00 → IAD 2027-01-21 16:18:00; layover at IAD: 87 minutes.
    • UA4914: IAD 2027-01-21 17:45:00 → TYS 2027-01-21 19:36:00.
  • United Airlines UA4040 / UA4558: TYS 2027-01-31 19:35:00 → PHL 2027-01-31 23:30:00; 1 stop(s) via IAD; 235 minutes. Local airport times.
    • UA4040: TYS 2027-01-31 19:35:00 → IAD 2027-01-31 21:15:00; layover at IAD: 60 minutes.
    • UA4558: IAD 2027-01-31 22:15:00 → PHL 2027-01-31 23:30:00.

2027-01-21 → 2027-01-31 · $304.00

  • Delta Air Lines DL2331 / DL4989: PHL 2027-01-21 12:22:00 → TYS 2027-01-21 17:49:00; 1 stop(s) via DTW; 327 minutes. Local airport times.
    • DL2331: PHL 2027-01-21 12:22:00 → DTW 2027-01-21 14:14:00; layover at DTW: 116 minutes.
    • DL4989: DTW 2027-01-21 16:10:00 → TYS 2027-01-21 17:49:00.
  • Delta Air Lines DL5091 / DL1391: TYS 2027-01-31 11:43:00 → PHL 2027-01-31 16:35:00; 1 stop(s) via DTW; 292 minutes. Local airport times.
    • DL5091: TYS 2027-01-31 11:43:00 → DTW 2027-01-31 13:30:00; layover at DTW: 89 minutes.
    • DL1391: DTW 2027-01-31 14:59:00 → PHL 2027-01-31 16:35:00.

2027-01-21 → 2027-01-31 · $323.00

  • American Airlines AA6014: PHL 2027-01-21 13:21:00 → TYS 2027-01-21 15:27:00; nonstop; 126 minutes. Local airport times.
  • American Airlines AA5609: TYS 2027-01-31 18:17:00 → PHL 2027-01-31 20:10:00; nonstop; 113 minutes. Local airport times.

2027-01-21 → 2027-01-31 · $304.00

  • Delta Air Lines DL2270 / DL4931: PHL 2027-01-21 11:36:00 → TYS 2027-01-21 15:57:00; 1 stop(s) via ATL; 261 minutes. Local airport times.
    • DL2270: PHL 2027-01-21 11:36:00 → ATL 2027-01-21 13:46:00; layover at ATL: 69 minutes.
    • DL4931: ATL 2027-01-21 14:55:00 → TYS 2027-01-21 15:57:00.
  • Delta Air Lines DL5091 / DL1391: TYS 2027-01-31 11:43:00 → PHL 2027-01-31 16:35:00; 1 stop(s) via DTW; 292 minutes. Local airport times.
    • DL5091: TYS 2027-01-31 11:43:00 → DTW 2027-01-31 13:30:00; layover at DTW: 89 minutes.
    • DL1391: DTW 2027-01-31 14:59:00 → PHL 2027-01-31 16:35:00.

2027-01-21 → 2027-01-31 · $304.00

  • American Airlines AA5437 / AA5484: PHL 2027-01-21 15:33:00 → TYS 2027-01-21 21:25:00; 1 stop(s) via DCA; 352 minutes. Local airport times.
    • AA5437: PHL 2027-01-21 15:33:00 → DCA 2027-01-21 16:57:00; layover at DCA: 161 minutes.
    • AA5484: DCA 2027-01-21 19:38:00 → TYS 2027-01-21 21:25:00.
  • American Airlines AA5609: TYS 2027-01-31 18:17:00 → PHL 2027-01-31 20:10:00; nonstop; 113 minutes. Local airport times.

2027-01-21 → 2027-01-31 · $304.00

  • American Airlines AA567 / AA5301: PHL 2027-01-21 15:06:00 → TYS 2027-01-21 19:31:00; 1 stop(s) via CLT; 265 minutes. Local airport times.
    • AA567: PHL 2027-01-21 15:06:00 → CLT 2027-01-21 17:04:00; layover at CLT: 72 minutes.
    • AA5301: CLT 2027-01-21 18:16:00 → TYS 2027-01-21 19:31:00.
  • American Airlines AA5609: TYS 2027-01-31 18:17:00 → PHL 2027-01-31 20:10:00; nonstop; 113 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Philadelphia (PHL) to Knoxville (TYS) · Jan 21, 2027 · return Jan 31, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match this page, share this page's complete link unchanged: Philadelphia (PHL) to Knoxville (TYS), Jan 21, 2027 · return Jan 31, 2027. Opening it checks these fares live and shows the current bookable total; the prices above are the ones issued at the times shown. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Philadelphia to Knoxville (TYS) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.