Travel with Axel,
get the best price.

Philadelphia → Knoxville

Dec 2, 2026 · return Dec 16, 2026

PHL → TYS1 adulteconomyRound trip

6 flight options · 4 airlines

One-stop flights

Wed, Dec 2 – Wed, Dec 16

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

Wed, Dec 2 – Wed, Dec 16

American Airlines
3:06 pmPHL
4h 25m
CLT · 1h 12m
7:31 pmTYS
American Airlines
11:36 amTYS
6h 19m
DCA · 3h 29m
5:55 pmPHL

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Wed, Dec 16

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

Wed, Dec 2 – Wed, Dec 16

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

Wed, Dec 2 – Wed, Dec 16

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

Wed, Dec 2 – Wed, Dec 16

American Airlines
1:21 pmPHL
2h 6m
Nonstop
3:27 pmTYS
American Airlines
11:36 amTYS
6h 19m
DCA · 3h 29m
5:55 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, Southwest 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

More dates

All dates for this routeOct 30, 2026 → Nov 2, 2026Oct 31, 2026 → Nov 7, 2026Nov 13, 2026 → Nov 16, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Nov 27, 2026 → Nov 30, 2026Nov 28, 2026 → Dec 5, 2026Dec 11, 2026 → Dec 14, 2026Dec 12, 2026 → Dec 19, 2026Dec 22, 2026 → Dec 27, 2026Dec 25, 2026 → Dec 28, 2026Dec 26, 2026 → Jan 2, 2027Dec 30, 2026 → Jan 2, 2027Jan 8, 2027 → Jan 11, 2027Jan 9, 2027 → Jan 16, 2027Jan 15, 2027 → Jan 18, 2027Jan 22, 2027 → Jan 25, 2027Jan 23, 2027 → Jan 30, 2027Feb 5, 2027 → Feb 8, 2027Feb 6, 2027 → Feb 13, 2027Feb 12, 2027 → Feb 15, 2027Mar 5, 2027 → Mar 8, 2027Mar 6, 2027 → Mar 13, 2027Mar 25, 2027 → Mar 29, 2027Apr 2, 2027 → Apr 5, 2027Apr 3, 2027 → Apr 10, 2027Apr 30, 2027 → May 3, 2027May 1, 2027 → May 8, 2027May 28, 2027 → May 31, 2027May 29, 2027 → Jun 5, 2027Jun 25, 2027 → Jun 28, 2027Jun 26, 2027 → Jul 3, 2027Jul 2, 2027 → Jul 6, 2027Jul 23, 2027 → Jul 26, 2027Jul 24, 2027 → Jul 31, 2027Aug 20, 2027 → Aug 23, 2027Aug 21, 2027 → Aug 28, 2027Sep 3, 2027 → Sep 6, 2027Sep 17, 2027 → Sep 20, 2027Oct 30, 2026 · One way
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.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-02 → 2026-12-16Southwest AirlinesWN2080 + WN31 / WN463 + WN2825$290.002026-10-29T01:56:05Z
2026-12-02 → 2026-12-16American AirlinesAA567 + AA5301 / AA5301 + AA5432$300.002026-10-29T01:56:05Z
2026-12-02 → 2026-12-16United AirlinesUA4575 + UA4914 / UA4040 + UA4558$310.002026-10-29T01:56:05Z
2026-12-02 → 2026-12-16Delta Air LinesDL2331 + DL4989 / DL5091 + DL1391$320.002026-10-29T01:56:05Z
2026-12-02 → 2026-12-16Delta Air LinesDL2270 + DL4931 / DL5091 + DL1391$320.002026-10-29T01:56:05Z
2026-12-02 → 2026-12-16American AirlinesAA6014 / AA5301 + AA5432$320.002026-10-29T01:56:05Z

2026-12-02 → 2026-12-16 · $290.00

  • Southwest Airlines WN2080 / WN31: PHL 2026-12-02 14:55:00 → TYS 2026-12-02 19:50:00; 1 stop(s) via BNA; 295 minutes. Local airport times.
    • WN2080: PHL 2026-12-02 14:55:00 → BNA 2026-12-02 16:10:00; layover at BNA: 105 minutes.
    • WN31: BNA 2026-12-02 17:55:00 → TYS 2026-12-02 19:50:00.
  • Southwest Airlines WN463 / WN2825: TYS 2026-12-16 17:15:00 → PHL 2026-12-16 22:10:00; 1 stop(s) via BNA; 295 minutes. Local airport times.
    • WN463: TYS 2026-12-16 17:15:00 → BNA 2026-12-16 17:15:00; layover at BNA: 110 minutes.
    • WN2825: BNA 2026-12-16 19:05:00 → PHL 2026-12-16 22:10:00.

2026-12-02 → 2026-12-16 · $300.00

  • American Airlines AA567 / AA5301: PHL 2026-12-02 15:06:00 → TYS 2026-12-02 19:31:00; 1 stop(s) via CLT; 265 minutes. Local airport times.
    • AA567: PHL 2026-12-02 15:06:00 → CLT 2026-12-02 17:04:00; layover at CLT: 72 minutes.
    • AA5301: CLT 2026-12-02 18:16:00 → TYS 2026-12-02 19:31:00.
  • American Airlines AA5301 / AA5432: TYS 2026-12-16 11:36:00 → PHL 2026-12-16 17:55:00; 1 stop(s) via DCA; 379 minutes. Local airport times.
    • AA5301: TYS 2026-12-16 11:36:00 → DCA 2026-12-16 13:17:00; layover at DCA: 209 minutes.
    • AA5432: DCA 2026-12-16 16:46:00 → PHL 2026-12-16 17:55:00.

2026-12-02 → 2026-12-16 · $310.00

  • United Airlines UA4575 / UA4914: PHL 2026-12-02 15:05:00 → TYS 2026-12-02 19:36:00; 1 stop(s) via IAD; 271 minutes. Local airport times.
    • UA4575: PHL 2026-12-02 15:05:00 → IAD 2026-12-02 16:18:00; layover at IAD: 87 minutes.
    • UA4914: IAD 2026-12-02 17:45:00 → TYS 2026-12-02 19:36:00.
  • United Airlines UA4040 / UA4558: TYS 2026-12-16 19:35:00 → PHL 2026-12-16 23:30:00; 1 stop(s) via IAD; 235 minutes. Local airport times.
    • UA4040: TYS 2026-12-16 19:35:00 → IAD 2026-12-16 21:15:00; layover at IAD: 60 minutes.
    • UA4558: IAD 2026-12-16 22:15:00 → PHL 2026-12-16 23:30:00.

2026-12-02 → 2026-12-16 · $320.00

  • Delta Air Lines DL2331 / DL4989: PHL 2026-12-02 12:22:00 → TYS 2026-12-02 17:49:00; 1 stop(s) via DTW; 327 minutes. Local airport times.
    • DL2331: PHL 2026-12-02 12:22:00 → DTW 2026-12-02 14:14:00; layover at DTW: 116 minutes.
    • DL4989: DTW 2026-12-02 16:10:00 → TYS 2026-12-02 17:49:00.
  • Delta Air Lines DL5091 / DL1391: TYS 2026-12-16 11:43:00 → PHL 2026-12-16 16:35:00; 1 stop(s) via DTW; 292 minutes. Local airport times.
    • DL5091: TYS 2026-12-16 11:43:00 → DTW 2026-12-16 13:30:00; layover at DTW: 89 minutes.
    • DL1391: DTW 2026-12-16 14:59:00 → PHL 2026-12-16 16:35:00.

2026-12-02 → 2026-12-16 · $320.00

  • Delta Air Lines DL2270 / DL4931: PHL 2026-12-02 11:36:00 → TYS 2026-12-02 15:57:00; 1 stop(s) via ATL; 261 minutes. Local airport times.
    • DL2270: PHL 2026-12-02 11:36:00 → ATL 2026-12-02 13:46:00; layover at ATL: 69 minutes.
    • DL4931: ATL 2026-12-02 14:55:00 → TYS 2026-12-02 15:57:00.
  • Delta Air Lines DL5091 / DL1391: TYS 2026-12-16 11:43:00 → PHL 2026-12-16 16:35:00; 1 stop(s) via DTW; 292 minutes. Local airport times.
    • DL5091: TYS 2026-12-16 11:43:00 → DTW 2026-12-16 13:30:00; layover at DTW: 89 minutes.
    • DL1391: DTW 2026-12-16 14:59:00 → PHL 2026-12-16 16:35:00.

2026-12-02 → 2026-12-16 · $320.00

  • American Airlines AA6014: PHL 2026-12-02 13:21:00 → TYS 2026-12-02 15:27:00; nonstop; 126 minutes. Local airport times.
  • American Airlines AA5301 / AA5432: TYS 2026-12-16 11:36:00 → PHL 2026-12-16 17:55:00; 1 stop(s) via DCA; 379 minutes. Local airport times.
    • AA5301: TYS 2026-12-16 11:36:00 → DCA 2026-12-16 13:17:00; layover at DCA: 209 minutes.
    • AA5432: DCA 2026-12-16 16:46:00 → PHL 2026-12-16 17:55:00.

More dates for this route