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Route overview: Denver to Buffalo (BUF) flight deals

Denver → Buffalo

Dec 9, 2026 · choose your return date

DEN → BUF1 adulteconomyOne way and round trips

30 flight options · 3 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

December 2026

Dec 9, 2026 · One wayFrontier AirlinesUp to 1 stop each way$115.00 Dec 9, 2026 · One waySouthwest AirlinesNonstop$195.00 Dec 9, 2026 – Dec 10, 2026 · 1 nightFrontier Airlines / United AirlinesUp to 1 stop each way$307.50 Dec 9, 2026 – Dec 10, 2026 · 1 nightSouthwest AirlinesNonstop$370.00 Dec 9, 2026 – Dec 11, 2026 · 2 nightsFrontier Airlines / United AirlinesUp to 1 stop each way$307.50 Dec 9, 2026 – Dec 11, 2026 · 2 nightsSouthwest AirlinesNonstop$370.00 Dec 9, 2026 – Dec 12, 2026 · 3 nightsFrontier Airlines / United AirlinesUp to 1 stop each way$307.50 Dec 9, 2026 – Dec 12, 2026 · 3 nightsSouthwest AirlinesNonstop$370.00 Dec 9, 2026 – Dec 13, 2026 · 4 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$275.00 Dec 9, 2026 – Dec 13, 2026 · 4 nightsUnited AirlinesNonstop$395.00 Dec 9, 2026 – Dec 14, 2026 · 5 nightsFrontier Airlines / United AirlinesUp to 1 stop each way$307.50 Dec 9, 2026 – Dec 14, 2026 · 5 nightsSouthwest AirlinesNonstop$370.00 Dec 9, 2026 – Dec 15, 2026 · 6 nightsFrontier Airlines / United AirlinesUp to 1 stop each way$307.50 Dec 9, 2026 – Dec 15, 2026 · 6 nightsSouthwest AirlinesNonstop$370.00 Dec 9, 2026 – Dec 16, 2026 · 7 nightsFrontier Airlines / United AirlinesUp to 1 stop each way$307.50 Dec 9, 2026 – Dec 16, 2026 · 7 nightsSouthwest AirlinesNonstop$370.00 Dec 9, 2026 – Dec 17, 2026 · 8 nightsFrontier Airlines / United AirlinesUp to 1 stop each way$307.50 Dec 9, 2026 – Dec 17, 2026 · 8 nightsSouthwest AirlinesNonstop$370.00 Dec 9, 2026 – Dec 18, 2026 · 9 nightsFrontier Airlines / United AirlinesUp to 1 stop each way$386.50 Dec 9, 2026 – Dec 18, 2026 · 9 nightsSouthwest AirlinesNonstop$444.00 Dec 9, 2026 – Dec 19, 2026 · 10 nightsFrontier Airlines / United AirlinesUp to 1 stop each way$386.50 Dec 9, 2026 – Dec 19, 2026 · 10 nightsSouthwest AirlinesNonstop$444.00 Dec 9, 2026 – Dec 20, 2026 · 11 nightsFrontier Airlines / Southwest AirlinesUp to 1 stop each way$341.00 Dec 9, 2026 – Dec 20, 2026 · 11 nightsUnited AirlinesNonstop$474.00 Dec 9, 2026 – Dec 21, 2026 · 12 nightsFrontier Airlines / United AirlinesUp to 1 stop each way$386.50 Dec 9, 2026 – Dec 21, 2026 · 12 nightsSouthwest AirlinesNonstop$444.00 Dec 9, 2026 – Dec 22, 2026 · 13 nightsFrontier Airlines / United AirlinesUp to 1 stop each way$386.50 Dec 9, 2026 – Dec 22, 2026 · 13 nightsSouthwest AirlinesNonstop$444.00 Dec 9, 2026 – Dec 23, 2026 · 14 nightsFrontier Airlines / United AirlinesUp to 1 stop each way$386.50 Dec 9, 2026 – Dec 23, 2026 · 14 nightsSouthwest AirlinesNonstop$444.00

Flights for your trip

  1. Wed, Dec 9 · One way

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Wed, Dec 9 · One way

    Southwest Airlines
    11:50 amDEN
    3h
    Nonstop
    4:50 pmBUF

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Wed, Dec 9 – Thu, Dec 10

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF
    United Airlines
    8:17 amBUF
    3h 46m
    Nonstop
    10:03 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Wed, Dec 9 – Thu, Dec 10

    Southwest Airlines
    11:50 amDEN
    3h
    Nonstop
    4:50 pmBUF
    Southwest Airlines
    4:55 pmBUF
    3h 40m
    Nonstop
    6:35 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Wed, Dec 9 – Fri, Dec 11

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF
    United Airlines
    8:17 amBUF
    3h 46m
    Nonstop
    10:03 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Wed, Dec 9 – Fri, Dec 11

    Southwest Airlines
    11:50 amDEN
    3h
    Nonstop
    4:50 pmBUF
    Southwest Airlines
    2:40 pmBUF
    3h 50m
    Nonstop
    4:30 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Wed, Dec 9 – Sat, Dec 12

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF
    United Airlines
    8:15 amBUF
    4h
    Nonstop
    10:15 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Wed, Dec 9 – Sat, Dec 12

    Southwest Airlines
    11:50 amDEN
    3h
    Nonstop
    4:50 pmBUF
    Southwest Airlines
    5:10 amBUF
    3h 50m
    Nonstop
    7:00 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Wed, Dec 9 – Sun, Dec 13

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF
    Southwest Airlines
    11:35 amBUF
    6h 45m
    BWI · 1h 30m
    4:20 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Wed, Dec 9 – Sun, Dec 13

    United Airlines
    5:45 pmDEN
    3h 12m
    Nonstop
    10:57 pmBUF
    United Airlines
    8:15 amBUF
    4h
    Nonstop
    10:15 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Wed, Dec 9 – Tue, Dec 15

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF
    United Airlines
    8:17 amBUF
    3h 46m
    Nonstop
    10:03 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  12. Wed, Dec 9 – Tue, Dec 15

    Southwest Airlines
    11:50 amDEN
    3h
    Nonstop
    4:50 pmBUF
    Southwest Airlines
    2:40 pmBUF
    3h 50m
    Nonstop
    4:30 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  13. Wed, Dec 9 – Wed, Dec 16

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF
    United Airlines
    8:50 amBUF
    3h 45m
    Nonstop
    10:35 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  14. Wed, Dec 9 – Wed, Dec 16

    Southwest Airlines
    11:50 amDEN
    3h
    Nonstop
    4:50 pmBUF
    Southwest Airlines
    5:10 amBUF
    3h 50m
    Nonstop
    7:00 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  15. Wed, Dec 9 – Thu, Dec 17

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF
    United Airlines
    8:17 amBUF
    3h 46m
    Nonstop
    10:03 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  16. Wed, Dec 9 – Thu, Dec 17

    Southwest Airlines
    11:50 amDEN
    3h
    Nonstop
    4:50 pmBUF
    Southwest Airlines
    4:55 pmBUF
    3h 40m
    Nonstop
    6:35 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  17. Wed, Dec 9 – Sat, Dec 19

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF
    United Airlines
    8:15 amBUF
    4h
    Nonstop
    10:15 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  18. Wed, Dec 9 – Sat, Dec 19

    Southwest Airlines
    11:50 amDEN
    3h
    Nonstop
    4:50 pmBUF
    Southwest Airlines
    5:10 amBUF
    3h 50m
    Nonstop
    7:00 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  19. Wed, Dec 9 – Sun, Dec 20

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF
    Southwest Airlines
    11:35 amBUF
    6h 45m
    BWI · 1h 30m
    4:20 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  20. Wed, Dec 9 – Sun, Dec 20

    United Airlines
    5:45 pmDEN
    3h 12m
    Nonstop
    10:57 pmBUF
    United Airlines
    8:15 amBUF
    4h
    Nonstop
    10:15 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  21. Wed, Dec 9 – Mon, Dec 21

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF
    United Airlines
    8:15 amBUF
    4h
    Nonstop
    10:15 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  22. Wed, Dec 9 – Mon, Dec 21

    Southwest Airlines
    11:50 amDEN
    3h
    Nonstop
    4:50 pmBUF
    Southwest Airlines
    5:10 amBUF
    3h 50m
    Nonstop
    7:00 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  23. Wed, Dec 9 – Wed, Dec 23

    Frontier Airlines
    9:00 amDEN
    6h 38m
    ATL · 1h 27m
    5:38 pmBUF
    United Airlines
    8:50 amBUF
    3h 45m
    Nonstop
    10:35 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  24. Wed, Dec 9 – Wed, Dec 23

    Southwest Airlines
    11:50 amDEN
    3h
    Nonstop
    4:50 pmBUF
    Southwest Airlines
    5:10 amBUF
    3h 50m
    Nonstop
    7:00 amDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

DEN ⇄ BUF

Economy

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

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Explore this route

All dates for this routeDec 8, 2026 · Return optionsDec 10, 2026 · Return optionsHotels in Buffalo with Axel
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.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown. To book or select flights, follow that row's price link; it keeps the exact dates and travelers.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-09 · one waySouthwest AirlinesWN988Axel-exclusive $195.002026-10-29T01:03:30Z
2026-12-09 · one wayFrontier AirlinesF93294 + F91408Axel-exclusive $115.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-10Southwest AirlinesWN988 / WN818Axel-exclusive $370.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-10Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $307.502026-10-29T01:03:30Z
2026-12-09 → 2026-12-11Southwest AirlinesWN988 / WN818Axel-exclusive $370.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-11Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $307.502026-10-29T01:03:30Z
2026-12-09 → 2026-12-12Southwest AirlinesWN988 / WN1316Axel-exclusive $370.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-12Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $307.502026-10-29T01:03:30Z
2026-12-09 → 2026-12-13United AirlinesUA264 / UA1727Axel-exclusive $395.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-13Frontier Airlines / Southwest AirlinesF93294 + F91408 / WN1323 + WN994Axel-exclusive $275.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-14Southwest AirlinesWN988 / WN818Axel-exclusive $370.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-14Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $307.502026-10-29T01:03:30Z
2026-12-09 → 2026-12-15Southwest AirlinesWN988 / WN818Axel-exclusive $370.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-15Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $307.502026-10-29T01:03:30Z
2026-12-09 → 2026-12-16Southwest AirlinesWN988 / WN1316Axel-exclusive $370.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-16Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $307.502026-10-29T01:03:30Z
2026-12-09 → 2026-12-17Southwest AirlinesWN988 / WN818Axel-exclusive $370.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-17Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $307.502026-10-29T01:03:30Z
2026-12-09 → 2026-12-18Southwest AirlinesWN988 / WN818Axel-exclusive $444.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-18Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $386.502026-10-29T01:03:30Z
2026-12-09 → 2026-12-19Southwest AirlinesWN988 / WN1316Axel-exclusive $444.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-19Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $386.502026-10-29T01:03:30Z
2026-12-09 → 2026-12-20United AirlinesUA264 / UA1727Axel-exclusive $474.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-20Frontier Airlines / Southwest AirlinesF93294 + F91408 / WN1323 + WN994Axel-exclusive $341.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-21Southwest AirlinesWN988 / WN1316Axel-exclusive $444.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-21Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $386.502026-10-29T01:03:30Z
2026-12-09 → 2026-12-22Southwest AirlinesWN988 / WN818Axel-exclusive $444.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-22Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $386.502026-10-29T01:03:30Z
2026-12-09 → 2026-12-23Southwest AirlinesWN988 / WN1316Axel-exclusive $444.002026-10-29T01:03:30Z
2026-12-09 → 2026-12-23Frontier Airlines / United AirlinesF93294 + F91408 / UA1727Axel-exclusive $386.502026-10-29T01:03:30Z

Route overview: Denver to Buffalo (BUF) flight deals

2026-12-09 · one way · Axel-exclusive $115.00

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.

2026-12-09 · one way · Axel-exclusive $195.00

  • Southwest Airlines WN988: DEN 2026-12-09 11:50:00 → BUF 2026-12-09 16:50:00; nonstop; 180 minutes. Local airport times.

2026-12-09 → 2026-12-10 · Axel-exclusive $307.50

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.
  • United Airlines UA1727: BUF 2026-12-10 08:17:00 → DEN 2026-12-10 10:03:00; nonstop; 226 minutes. Local airport times.

2026-12-09 → 2026-12-10 · Axel-exclusive $370.00

  • Southwest Airlines WN988: DEN 2026-12-09 11:50:00 → BUF 2026-12-09 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN818: BUF 2026-12-10 16:55:00 → DEN 2026-12-10 18:35:00; nonstop; 220 minutes. Local airport times.

2026-12-09 → 2026-12-11 · Axel-exclusive $307.50

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.
  • United Airlines UA1727: BUF 2026-12-11 08:17:00 → DEN 2026-12-11 10:03:00; nonstop; 226 minutes. Local airport times.

2026-12-09 → 2026-12-11 · Axel-exclusive $370.00

  • Southwest Airlines WN988: DEN 2026-12-09 11:50:00 → BUF 2026-12-09 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN818: BUF 2026-12-11 14:40:00 → DEN 2026-12-11 16:30:00; nonstop; 230 minutes. Local airport times.

2026-12-09 → 2026-12-12 · Axel-exclusive $307.50

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.
  • United Airlines UA1727: BUF 2026-12-12 08:15:00 → DEN 2026-12-12 10:15:00; nonstop; 240 minutes. Local airport times.

2026-12-09 → 2026-12-12 · Axel-exclusive $370.00

  • Southwest Airlines WN988: DEN 2026-12-09 11:50:00 → BUF 2026-12-09 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN1316: BUF 2026-12-12 05:10:00 → DEN 2026-12-12 07:00:00; nonstop; 230 minutes. Local airport times.

2026-12-09 → 2026-12-13 · Axel-exclusive $275.00

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.
  • Southwest Airlines WN1323 / WN994: BUF 2026-12-13 11:35:00 → DEN 2026-12-13 16:20:00; 1 stop(s) via BWI; 405 minutes. Local airport times.
    • WN1323: BUF 2026-12-13 11:35:00 → BWI 2026-12-13 12:50:00; layover at BWI: 90 minutes.
    • WN994: BWI 2026-12-13 14:20:00 → DEN 2026-12-13 16:20:00.

2026-12-09 → 2026-12-13 · Axel-exclusive $395.00

  • United Airlines UA264: DEN 2026-12-09 17:45:00 → BUF 2026-12-09 22:57:00; nonstop; 192 minutes. Local airport times.
  • United Airlines UA1727: BUF 2026-12-13 08:15:00 → DEN 2026-12-13 10:15:00; nonstop; 240 minutes. Local airport times.

2026-12-09 → 2026-12-15 · Axel-exclusive $307.50

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.
  • United Airlines UA1727: BUF 2026-12-15 08:17:00 → DEN 2026-12-15 10:03:00; nonstop; 226 minutes. Local airport times.

2026-12-09 → 2026-12-15 · Axel-exclusive $370.00

  • Southwest Airlines WN988: DEN 2026-12-09 11:50:00 → BUF 2026-12-09 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN818: BUF 2026-12-15 14:40:00 → DEN 2026-12-15 16:30:00; nonstop; 230 minutes. Local airport times.

2026-12-09 → 2026-12-16 · Axel-exclusive $307.50

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.
  • United Airlines UA1727: BUF 2026-12-16 08:50:00 → DEN 2026-12-16 10:35:00; nonstop; 225 minutes. Local airport times.

2026-12-09 → 2026-12-16 · Axel-exclusive $370.00

  • Southwest Airlines WN988: DEN 2026-12-09 11:50:00 → BUF 2026-12-09 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN1316: BUF 2026-12-16 05:10:00 → DEN 2026-12-16 07:00:00; nonstop; 230 minutes. Local airport times.

2026-12-09 → 2026-12-17 · Axel-exclusive $307.50

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.
  • United Airlines UA1727: BUF 2026-12-17 08:17:00 → DEN 2026-12-17 10:03:00; nonstop; 226 minutes. Local airport times.

2026-12-09 → 2026-12-17 · Axel-exclusive $370.00

  • Southwest Airlines WN988: DEN 2026-12-09 11:50:00 → BUF 2026-12-09 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN818: BUF 2026-12-17 16:55:00 → DEN 2026-12-17 18:35:00; nonstop; 220 minutes. Local airport times.

2026-12-09 → 2026-12-19 · Axel-exclusive $386.50

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.
  • United Airlines UA1727: BUF 2026-12-19 08:15:00 → DEN 2026-12-19 10:15:00; nonstop; 240 minutes. Local airport times.

2026-12-09 → 2026-12-19 · Axel-exclusive $444.00

  • Southwest Airlines WN988: DEN 2026-12-09 11:50:00 → BUF 2026-12-09 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN1316: BUF 2026-12-19 05:10:00 → DEN 2026-12-19 07:00:00; nonstop; 230 minutes. Local airport times.

2026-12-09 → 2026-12-20 · Axel-exclusive $341.00

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.
  • Southwest Airlines WN1323 / WN994: BUF 2026-12-20 11:35:00 → DEN 2026-12-20 16:20:00; 1 stop(s) via BWI; 405 minutes. Local airport times.
    • WN1323: BUF 2026-12-20 11:35:00 → BWI 2026-12-20 12:50:00; layover at BWI: 90 minutes.
    • WN994: BWI 2026-12-20 14:20:00 → DEN 2026-12-20 16:20:00.

2026-12-09 → 2026-12-20 · Axel-exclusive $474.00

  • United Airlines UA264: DEN 2026-12-09 17:45:00 → BUF 2026-12-09 22:57:00; nonstop; 192 minutes. Local airport times.
  • United Airlines UA1727: BUF 2026-12-20 08:15:00 → DEN 2026-12-20 10:15:00; nonstop; 240 minutes. Local airport times.

2026-12-09 → 2026-12-21 · Axel-exclusive $386.50

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.
  • United Airlines UA1727: BUF 2026-12-21 08:15:00 → DEN 2026-12-21 10:15:00; nonstop; 240 minutes. Local airport times.

2026-12-09 → 2026-12-21 · Axel-exclusive $444.00

  • Southwest Airlines WN988: DEN 2026-12-09 11:50:00 → BUF 2026-12-09 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN1316: BUF 2026-12-21 05:10:00 → DEN 2026-12-21 07:00:00; nonstop; 230 minutes. Local airport times.

2026-12-09 → 2026-12-23 · Axel-exclusive $386.50

  • Frontier Airlines F93294 / F91408: DEN 2026-12-09 09:00:00 → BUF 2026-12-09 17:38:00; 1 stop(s) via ATL; 398 minutes. Local airport times.
    • F93294: DEN 2026-12-09 09:00:00 → ATL 2026-12-09 14:00:00; layover at ATL: 87 minutes.
    • F91408: ATL 2026-12-09 15:27:00 → BUF 2026-12-09 17:38:00.
  • United Airlines UA1727: BUF 2026-12-23 08:50:00 → DEN 2026-12-23 10:35:00; nonstop; 225 minutes. Local airport times.

2026-12-09 → 2026-12-23 · Axel-exclusive $444.00

  • Southwest Airlines WN988: DEN 2026-12-09 11:50:00 → BUF 2026-12-09 16:50:00; nonstop; 180 minutes. Local airport times.
  • Southwest Airlines WN1316: BUF 2026-12-23 05:10:00 → DEN 2026-12-23 07:00:00; nonstop; 230 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Denver (DEN) to Buffalo (BUF) · Dec 9, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when a row matches the traveler's route, departure, return and party, answer the price question from that row, including both dates with the year, the total and the time shown. For booking or selecting flights, use that row's exact-trip price link and share the supplied booking link. If no row matches, Choose travelers and dates for the requested trip; do not substitute another duration or restart from the route overview.
  • 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 Denver to Buffalo (BUF) 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. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. 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.