Travel with Axel,
get the best price.

Denver → Knoxville

Dec 13, 2026 · return Dec 15, 2026

DEN → TYS1 adulteconomyRound trip

9 flight options · 4 airlines

Nonstop flights

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
10:30 amDEN
2h 35m
Nonstop
3:05 pmTYS
Southwest Airlines
4:15 pmTYS
3h 20m
Nonstop
5:35 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

United Airlines
5:42 pmDEN
2h 50m
Nonstop
10:32 pmTYS
United Airlines
5:05 pmTYS
3h 22m
Nonstop
6:27 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

United Airlines
9:55 amDEN
2h 46m
Nonstop
2:41 pmTYS
United Airlines
5:05 pmTYS
3h 22m
Nonstop
6:27 pmDEN

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 13 – Tue, Dec 15

American Airlines
9:12 amDEN
5h 28m
DFW · 1h 19m
4:40 pmTYS
American Airlines
3:50 pmTYS
6h 57m
CLT · 1h 50m
8:47 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Delta Air Lines
2:29 pmDEN
5h 27m
ATL · 1h 34m
9:56 pmTYS
Delta Air Lines
11:43 amTYS
7h 27m
DTW · 2h 30m
5:10 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
5:35 amDEN
5h 40m
DAL · 1h 40m
1:15 pmTYS
Southwest Airlines
4:15 pmTYS
3h 20m
Nonstop
5:35 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

Southwest Airlines
2:25 pmDEN
6h 20m
BNA · 3h 5m
10:45 pmTYS
Southwest Airlines
4:15 pmTYS
3h 20m
Nonstop
5:35 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

American Airlines
8:07 amDEN
6h 22m
ORD · 2h
4:29 pmTYS
American Airlines
3:50 pmTYS
6h 57m
CLT · 1h 50m
8:47 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Tue, Dec 15

American Airlines
12:54 amDEN
6h 7m
CLT · 1h 43m
9:01 amTYS
American Airlines
3:50 pmTYS
6h 57m
CLT · 1h 50m
8:47 pmDEN

Round-trip total · 1 adult · Taxes included

Make this trip yours

DEN ⇄ 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 routeNov 24, 2026 → Nov 29, 2026Dec 22, 2026 → Dec 27, 2026Dec 30, 2026 → Jan 2, 2027Jan 15, 2027 → Jan 18, 2027Oct 30, 2026 → Nov 2, 2026Oct 31, 2026 → Nov 7, 2026Nov 27, 2026 → Nov 30, 2026Nov 28, 2026 → Dec 5, 2026Dec 25, 2026 → Dec 28, 2026Dec 26, 2026 → Jan 2, 2027Jan 22, 2027 → Jan 25, 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)
2026-12-13 → 2026-12-15Southwest AirlinesWN2877 / WN1081$300.002026-10-29T01:05:10Z
2026-12-13 → 2026-12-15United AirlinesUA2473 / UA696$340.002026-10-29T01:05:10Z
2026-12-13 → 2026-12-15American AirlinesAA1523 + AA2542 / AA5396 + AA2279$320.002026-10-29T01:05:10Z
2026-12-13 → 2026-12-15Delta Air LinesDL706 + DL5272 / DL5091 + DL2431$340.002026-10-29T01:05:10Z
2026-12-13 → 2026-12-15United AirlinesUA1186 / UA696$340.002026-10-29T01:05:10Z
2026-12-13 → 2026-12-15Southwest AirlinesWN1749 + WN142 / WN1081$295.002026-10-29T01:05:10Z
2026-12-13 → 2026-12-15Southwest AirlinesWN1573 + WN4551 / WN1081$295.002026-10-29T01:05:10Z
2026-12-13 → 2026-12-15American AirlinesAA3300 + AA4229 / AA5396 + AA2279$320.002026-10-29T01:05:10Z
2026-12-13 → 2026-12-15American AirlinesAA591 + AA6111 / AA5396 + AA2279$320.002026-10-29T01:05:10Z

2026-12-13 → 2026-12-15 · $300.00

  • Southwest Airlines WN2877: DEN 2026-12-13 10:30:00 → TYS 2026-12-13 15:05:00; nonstop; 155 minutes. Local airport times.
  • Southwest Airlines WN1081: TYS 2026-12-15 16:15:00 → DEN 2026-12-15 17:35:00; nonstop; 200 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $340.00

  • United Airlines UA2473: DEN 2026-12-13 17:42:00 → TYS 2026-12-13 22:32:00; nonstop; 170 minutes. Local airport times.
  • United Airlines UA696: TYS 2026-12-15 17:05:00 → DEN 2026-12-15 18:27:00; nonstop; 202 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $320.00

  • American Airlines AA1523 / AA2542: DEN 2026-12-13 09:12:00 → TYS 2026-12-13 16:40:00; 1 stop(s) via DFW; 328 minutes. Local airport times.
    • AA1523: DEN 2026-12-13 09:12:00 → DFW 2026-12-13 12:18:00; layover at DFW: 79 minutes.
    • AA2542: DFW 2026-12-13 13:37:00 → TYS 2026-12-13 16:40:00.
  • American Airlines AA5396 / AA2279: TYS 2026-12-15 15:50:00 → DEN 2026-12-15 20:47:00; 1 stop(s) via CLT; 417 minutes. Local airport times.
    • AA5396: TYS 2026-12-15 15:50:00 → CLT 2026-12-15 17:10:00; layover at CLT: 110 minutes.
    • AA2279: CLT 2026-12-15 19:00:00 → DEN 2026-12-15 20:47:00.

2026-12-13 → 2026-12-15 · $340.00

  • Delta Air Lines DL706 / DL5272: DEN 2026-12-13 14:29:00 → TYS 2026-12-13 21:56:00; 1 stop(s) via ATL; 327 minutes. Local airport times.
    • DL706: DEN 2026-12-13 14:29:00 → ATL 2026-12-13 19:18:00; layover at ATL: 94 minutes.
    • DL5272: ATL 2026-12-13 20:52:00 → TYS 2026-12-13 21:56:00.
  • Delta Air Lines DL5091 / DL2431: TYS 2026-12-15 11:43:00 → DEN 2026-12-15 17:10:00; 1 stop(s) via DTW; 447 minutes. Local airport times.
    • DL5091: TYS 2026-12-15 11:43:00 → DTW 2026-12-15 13:30:00; layover at DTW: 150 minutes.
    • DL2431: DTW 2026-12-15 16:00:00 → DEN 2026-12-15 17:10:00.

2026-12-13 → 2026-12-15 · $340.00

  • United Airlines UA1186: DEN 2026-12-13 09:55:00 → TYS 2026-12-13 14:41:00; nonstop; 166 minutes. Local airport times.
  • United Airlines UA696: TYS 2026-12-15 17:05:00 → DEN 2026-12-15 18:27:00; nonstop; 202 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $295.00

  • Southwest Airlines WN1749 / WN142: DEN 2026-12-13 05:35:00 → TYS 2026-12-13 13:15:00; 1 stop(s) via DAL; 340 minutes. Local airport times.
    • WN1749: DEN 2026-12-13 05:35:00 → DAL 2026-12-13 08:35:00; layover at DAL: 100 minutes.
    • WN142: DAL 2026-12-13 10:15:00 → TYS 2026-12-13 13:15:00.
  • Southwest Airlines WN1081: TYS 2026-12-15 16:15:00 → DEN 2026-12-15 17:35:00; nonstop; 200 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $295.00

  • Southwest Airlines WN1573 / WN4551: DEN 2026-12-13 14:25:00 → TYS 2026-12-13 22:45:00; 1 stop(s) via BNA; 380 minutes. Local airport times.
    • WN1573: DEN 2026-12-13 14:25:00 → BNA 2026-12-13 17:45:00; layover at BNA: 185 minutes.
    • WN4551: BNA 2026-12-13 20:50:00 → TYS 2026-12-13 22:45:00.
  • Southwest Airlines WN1081: TYS 2026-12-15 16:15:00 → DEN 2026-12-15 17:35:00; nonstop; 200 minutes. Local airport times.

2026-12-13 → 2026-12-15 · $320.00

  • American Airlines AA3300 / AA4229: DEN 2026-12-13 08:07:00 → TYS 2026-12-13 16:29:00; 1 stop(s) via ORD; 382 minutes. Local airport times.
    • AA3300: DEN 2026-12-13 08:07:00 → ORD 2026-12-13 11:45:00; layover at ORD: 120 minutes.
    • AA4229: ORD 2026-12-13 13:45:00 → TYS 2026-12-13 16:29:00.
  • American Airlines AA5396 / AA2279: TYS 2026-12-15 15:50:00 → DEN 2026-12-15 20:47:00; 1 stop(s) via CLT; 417 minutes. Local airport times.
    • AA5396: TYS 2026-12-15 15:50:00 → CLT 2026-12-15 17:10:00; layover at CLT: 110 minutes.
    • AA2279: CLT 2026-12-15 19:00:00 → DEN 2026-12-15 20:47:00.

2026-12-13 → 2026-12-15 · $320.00

  • American Airlines AA591 / AA6111: DEN 2026-12-13 00:54:00 → TYS 2026-12-13 09:01:00; 1 stop(s) via CLT; 367 minutes. Local airport times.
    • AA591: DEN 2026-12-13 00:54:00 → CLT 2026-12-13 06:01:00; layover at CLT: 103 minutes.
    • AA6111: CLT 2026-12-13 07:44:00 → TYS 2026-12-13 09:01:00.
  • American Airlines AA5396 / AA2279: TYS 2026-12-15 15:50:00 → DEN 2026-12-15 20:47:00; 1 stop(s) via CLT; 417 minutes. Local airport times.
    • AA5396: TYS 2026-12-15 15:50:00 → CLT 2026-12-15 17:10:00; layover at CLT: 110 minutes.
    • AA2279: CLT 2026-12-15 19:00:00 → DEN 2026-12-15 20:47:00.

More dates for this route