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Route overview: Chicago to Buffalo (BUF) flight deals

Chicago → Buffalo

May 23, 2027 · choose your return date

ORD → BUF1 adulteconomyOne way and round trips

30 flight options · 2 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.

May 2027

May 23, 2027 · One wayFrontier AirlinesUp to 1 stop each way$120.00 May 23, 2027 · One wayAmerican AirlinesNonstop$170.00 May 23, 2027 – May 24, 2027 · 1 nightFrontier AirlinesUp to 1 stop each way$230.00 May 23, 2027 – May 24, 2027 · 1 nightAmerican AirlinesNonstop$325.00 May 23, 2027 – May 25, 2027 · 2 nightsFrontier AirlinesUp to 1 stop each way$230.00 May 23, 2027 – May 25, 2027 · 2 nightsAmerican AirlinesNonstop$325.00 May 23, 2027 – May 26, 2027 · 3 nightsFrontier AirlinesUp to 1 stop each way$230.00 May 23, 2027 – May 26, 2027 · 3 nightsAmerican AirlinesNonstop$325.00 May 23, 2027 – May 27, 2027 · 4 nightsFrontier AirlinesUp to 1 stop each way$230.00 May 23, 2027 – May 27, 2027 · 4 nightsAmerican AirlinesNonstop$325.00 May 23, 2027 – May 28, 2027 · 5 nightsFrontier AirlinesUp to 1 stop each way$253.00 May 23, 2027 – May 28, 2027 · 5 nightsAmerican AirlinesNonstop$357.50 May 23, 2027 – May 29, 2027 · 6 nightsFrontier AirlinesUp to 1 stop each way$253.00 May 23, 2027 – May 29, 2027 · 6 nightsAmerican AirlinesNonstop$357.50 May 23, 2027 – May 30, 2027 · 7 nightsFrontier AirlinesUp to 1 stop each way$253.00 May 23, 2027 – May 30, 2027 · 7 nightsAmerican AirlinesNonstop$357.50 May 23, 2027 – May 31, 2027 · 8 nightsFrontier AirlinesUp to 1 stop each way$253.00 May 23, 2027 – May 31, 2027 · 8 nightsAmerican AirlinesNonstop$357.50 May 23, 2027 – Jun 1, 2027 · 9 nightsFrontier AirlinesUp to 1 stop each way$230.00 May 23, 2027 – Jun 1, 2027 · 9 nightsAmerican AirlinesNonstop$325.00 May 23, 2027 – Jun 2, 2027 · 10 nightsFrontier AirlinesUp to 1 stop each way$230.00 May 23, 2027 – Jun 2, 2027 · 10 nightsAmerican AirlinesNonstop$325.00 May 23, 2027 – Jun 3, 2027 · 11 nightsFrontier AirlinesUp to 1 stop each way$230.00 May 23, 2027 – Jun 3, 2027 · 11 nightsAmerican AirlinesNonstop$325.00 May 23, 2027 – Jun 4, 2027 · 12 nightsFrontier AirlinesUp to 1 stop each way$230.00 May 23, 2027 – Jun 4, 2027 · 12 nightsAmerican AirlinesNonstop$325.00 May 23, 2027 – Jun 5, 2027 · 13 nightsFrontier AirlinesUp to 1 stop each way$230.00 May 23, 2027 – Jun 5, 2027 · 13 nightsAmerican AirlinesNonstop$325.00 May 23, 2027 – Jun 6, 2027 · 14 nightsFrontier AirlinesUp to 1 stop each way$230.00 May 23, 2027 – Jun 6, 2027 · 14 nightsAmerican AirlinesNonstop$325.00

Flights for your trip

  1. Sun, May 23 · One way

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF

    One-way total · 1 adult · Taxes included

  2. Sun, May 23 · One way

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF

    One-way total · 1 adult · Taxes included

  3. Sun, May 23 – Mon, May 24

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF
    Frontier Airlines
    1:15 pmBUF
    5h 48m
    ATL · 1h 10m
    6:03 pmORD

    Round-trip total · 1 adult · Taxes included

  4. Sun, May 23 – Mon, May 24

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF
    American Airlines
    6:04 amBUF
    2h 6m
    Nonstop
    7:10 amORD

    Round-trip total · 1 adult · Taxes included

  5. Sun, May 23 – Tue, May 25

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF
    Frontier Airlines
    1:15 pmBUF
    5h 48m
    ATL · 1h 10m
    6:03 pmORD

    Round-trip total · 1 adult · Taxes included

  6. Sun, May 23 – Tue, May 25

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF
    American Airlines
    7:57 amBUF
    2h 8m
    Nonstop
    9:05 amORD

    Round-trip total · 1 adult · Taxes included

  7. Sun, May 23 – Wed, May 26

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF
    Frontier Airlines
    1:15 pmBUF
    5h 48m
    ATL · 1h 10m
    6:03 pmORD

    Round-trip total · 1 adult · Taxes included

  8. Sun, May 23 – Wed, May 26

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF
    American Airlines
    6:45 pmBUF
    2h 14m
    Nonstop
    7:59 pmORD

    Round-trip total · 1 adult · Taxes included

  9. Sun, May 23 – Thu, May 27

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF
    Frontier Airlines
    1:15 pmBUF
    5h 48m
    ATL · 1h 10m
    6:03 pmORD

    Round-trip total · 1 adult · Taxes included

  10. Sun, May 23 – Thu, May 27

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF
    American Airlines
    6:04 amBUF
    2h 6m
    Nonstop
    7:10 amORD

    Round-trip total · 1 adult · Taxes included

  11. Sun, May 23 – Sat, May 29

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF
    Frontier Airlines
    1:15 pmBUF
    5h 48m
    ATL · 1h 10m
    6:03 pmORD

    Round-trip total · 1 adult · Taxes included

  12. Sun, May 23 – Sat, May 29

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF
    American Airlines
    6:44 pmBUF
    2h 10m
    Nonstop
    7:54 pmORD

    Round-trip total · 1 adult · Taxes included

  13. Sun, May 23 – Sun, May 30

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF
    Frontier Airlines
    1:15 pmBUF
    5h 48m
    ATL · 1h 10m
    6:03 pmORD

    Round-trip total · 1 adult · Taxes included

  14. Sun, May 23 – Sun, May 30

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF
    American Airlines
    6:04 amBUF
    2h 6m
    Nonstop
    7:10 amORD

    Round-trip total · 1 adult · Taxes included

  15. Sun, May 23 – Mon, May 31

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF
    Frontier Airlines
    1:15 pmBUF
    5h 48m
    ATL · 1h 10m
    6:03 pmORD

    Round-trip total · 1 adult · Taxes included

  16. Sun, May 23 – Mon, May 31

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF
    American Airlines
    6:04 amBUF
    2h 6m
    Nonstop
    7:10 amORD

    Round-trip total · 1 adult · Taxes included

  17. Sun, May 23 – Wed, Jun 2

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF
    Frontier Airlines
    1:15 pmBUF
    5h 48m
    ATL · 1h 10m
    6:03 pmORD

    Round-trip total · 1 adult · Taxes included

  18. Sun, May 23 – Wed, Jun 2

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF
    American Airlines
    6:45 pmBUF
    2h 14m
    Nonstop
    7:59 pmORD

    Round-trip total · 1 adult · Taxes included

  19. Sun, May 23 – Thu, Jun 3

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF
    Frontier Airlines
    1:15 pmBUF
    5h 48m
    ATL · 1h 10m
    6:03 pmORD

    Round-trip total · 1 adult · Taxes included

  20. Sun, May 23 – Thu, Jun 3

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF
    American Airlines
    6:04 amBUF
    2h 6m
    Nonstop
    7:10 amORD

    Round-trip total · 1 adult · Taxes included

  21. Sun, May 23 – Fri, Jun 4

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF
    Frontier Airlines
    1:15 pmBUF
    5h 48m
    ATL · 1h 10m
    6:03 pmORD

    Round-trip total · 1 adult · Taxes included

  22. Sun, May 23 – Fri, Jun 4

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF
    American Airlines
    6:49 pmBUF
    2h 10m
    Nonstop
    7:59 pmORD

    Round-trip total · 1 adult · Taxes included

  23. Sun, May 23 – Sun, Jun 6

    Frontier Airlines
    5:35 amORD
    7h
    MCO · 1h 17m
    1:35 pmBUF
    Frontier Airlines
    1:15 pmBUF
    5h 48m
    ATL · 1h 10m
    6:03 pmORD

    Round-trip total · 1 adult · Taxes included

  24. Sun, May 23 – Sun, Jun 6

    American Airlines
    7:00 pmORD
    1h 37m
    Nonstop
    9:37 pmBUF
    American Airlines
    6:04 amBUF
    2h 6m
    Nonstop
    7:10 amORD

    Round-trip total · 1 adult · Taxes included

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1 of 24

Make this trip yours

ORD ⇄ BUF

Economy

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Explore this route

All dates for this routeMay 22, 2027 · Return optionsMay 24, 2027 · 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)
2027-05-23 · one wayAmerican AirlinesAA1073Axel-exclusive $170.002026-10-29T01:52:59Z
2027-05-23 · one wayFrontier AirlinesF91901 + F91692Axel-exclusive $120.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-24American AirlinesAA1073 / AA3012Axel-exclusive $325.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-24Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $230.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-25American AirlinesAA1073 / AA2359Axel-exclusive $325.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-25Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $230.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-26American AirlinesAA1073 / AA2202Axel-exclusive $325.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-26Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $230.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-27American AirlinesAA1073 / AA3012Axel-exclusive $325.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-27Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $230.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-28American AirlinesAA1073 / AA2306Axel-exclusive $357.502026-10-29T01:52:59Z
2027-05-23 → 2027-05-28Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $253.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-29American AirlinesAA1073 / AA2306Axel-exclusive $357.502026-10-29T01:52:59Z
2027-05-23 → 2027-05-29Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $253.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-30American AirlinesAA1073 / AA3012Axel-exclusive $357.502026-10-29T01:52:59Z
2027-05-23 → 2027-05-30Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $253.002026-10-29T01:52:59Z
2027-05-23 → 2027-05-31American AirlinesAA1073 / AA3012Axel-exclusive $357.502026-10-29T01:52:59Z
2027-05-23 → 2027-05-31Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $253.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-01American AirlinesAA1073 / AA2359Axel-exclusive $325.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-01Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $230.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-02American AirlinesAA1073 / AA2202Axel-exclusive $325.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-02Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $230.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-03American AirlinesAA1073 / AA3012Axel-exclusive $325.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-03Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $230.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-04American AirlinesAA1073 / AA2306Axel-exclusive $325.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-04Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $230.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-05American AirlinesAA1073 / AA2306Axel-exclusive $325.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-05Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $230.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-06American AirlinesAA1073 / AA3012Axel-exclusive $325.002026-10-29T01:52:59Z
2027-05-23 → 2027-06-06Frontier AirlinesF91901 + F91692 / F91407 + F92197Axel-exclusive $230.002026-10-29T01:52:59Z

Route overview: Chicago to Buffalo (BUF) flight deals

2027-05-23 · one way · Axel-exclusive $120.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.

2027-05-23 · one way · Axel-exclusive $170.00

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.

2027-05-23 → 2027-05-24 · Axel-exclusive $230.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.
  • Frontier Airlines F91407 / F92197: BUF 2027-05-24 13:15:00 → ORD 2027-05-24 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-05-24 13:15:00 → ATL 2027-05-24 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-05-24 16:46:00 → ORD 2027-05-24 18:03:00.

2027-05-23 → 2027-05-24 · Axel-exclusive $325.00

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.
  • American Airlines AA3012: BUF 2027-05-24 06:04:00 → ORD 2027-05-24 07:10:00; nonstop; 126 minutes. Local airport times.

2027-05-23 → 2027-05-25 · Axel-exclusive $230.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.
  • Frontier Airlines F91407 / F92197: BUF 2027-05-25 13:15:00 → ORD 2027-05-25 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-05-25 13:15:00 → ATL 2027-05-25 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-05-25 16:46:00 → ORD 2027-05-25 18:03:00.

2027-05-23 → 2027-05-25 · Axel-exclusive $325.00

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.
  • American Airlines AA2359: BUF 2027-05-25 07:57:00 → ORD 2027-05-25 09:05:00; nonstop; 128 minutes. Local airport times.

2027-05-23 → 2027-05-26 · Axel-exclusive $230.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.
  • Frontier Airlines F91407 / F92197: BUF 2027-05-26 13:15:00 → ORD 2027-05-26 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-05-26 13:15:00 → ATL 2027-05-26 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-05-26 16:46:00 → ORD 2027-05-26 18:03:00.

2027-05-23 → 2027-05-26 · Axel-exclusive $325.00

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.
  • American Airlines AA2202: BUF 2027-05-26 18:45:00 → ORD 2027-05-26 19:59:00; nonstop; 134 minutes. Local airport times.

2027-05-23 → 2027-05-27 · Axel-exclusive $230.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.
  • Frontier Airlines F91407 / F92197: BUF 2027-05-27 13:15:00 → ORD 2027-05-27 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-05-27 13:15:00 → ATL 2027-05-27 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-05-27 16:46:00 → ORD 2027-05-27 18:03:00.

2027-05-23 → 2027-05-27 · Axel-exclusive $325.00

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.
  • American Airlines AA3012: BUF 2027-05-27 06:04:00 → ORD 2027-05-27 07:10:00; nonstop; 126 minutes. Local airport times.

2027-05-23 → 2027-05-29 · Axel-exclusive $253.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.
  • Frontier Airlines F91407 / F92197: BUF 2027-05-29 13:15:00 → ORD 2027-05-29 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-05-29 13:15:00 → ATL 2027-05-29 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-05-29 16:46:00 → ORD 2027-05-29 18:03:00.

2027-05-23 → 2027-05-29 · Axel-exclusive $357.50

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.
  • American Airlines AA2306: BUF 2027-05-29 18:44:00 → ORD 2027-05-29 19:54:00; nonstop; 130 minutes. Local airport times.

2027-05-23 → 2027-05-30 · Axel-exclusive $253.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.
  • Frontier Airlines F91407 / F92197: BUF 2027-05-30 13:15:00 → ORD 2027-05-30 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-05-30 13:15:00 → ATL 2027-05-30 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-05-30 16:46:00 → ORD 2027-05-30 18:03:00.

2027-05-23 → 2027-05-30 · Axel-exclusive $357.50

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.
  • American Airlines AA3012: BUF 2027-05-30 06:04:00 → ORD 2027-05-30 07:10:00; nonstop; 126 minutes. Local airport times.

2027-05-23 → 2027-05-31 · Axel-exclusive $253.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.
  • Frontier Airlines F91407 / F92197: BUF 2027-05-31 13:15:00 → ORD 2027-05-31 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-05-31 13:15:00 → ATL 2027-05-31 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-05-31 16:46:00 → ORD 2027-05-31 18:03:00.

2027-05-23 → 2027-05-31 · Axel-exclusive $357.50

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.
  • American Airlines AA3012: BUF 2027-05-31 06:04:00 → ORD 2027-05-31 07:10:00; nonstop; 126 minutes. Local airport times.

2027-05-23 → 2027-06-02 · Axel-exclusive $230.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.
  • Frontier Airlines F91407 / F92197: BUF 2027-06-02 13:15:00 → ORD 2027-06-02 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-06-02 13:15:00 → ATL 2027-06-02 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-06-02 16:46:00 → ORD 2027-06-02 18:03:00.

2027-05-23 → 2027-06-02 · Axel-exclusive $325.00

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.
  • American Airlines AA2202: BUF 2027-06-02 18:45:00 → ORD 2027-06-02 19:59:00; nonstop; 134 minutes. Local airport times.

2027-05-23 → 2027-06-03 · Axel-exclusive $230.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.
  • Frontier Airlines F91407 / F92197: BUF 2027-06-03 13:15:00 → ORD 2027-06-03 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-06-03 13:15:00 → ATL 2027-06-03 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-06-03 16:46:00 → ORD 2027-06-03 18:03:00.

2027-05-23 → 2027-06-03 · Axel-exclusive $325.00

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.
  • American Airlines AA3012: BUF 2027-06-03 06:04:00 → ORD 2027-06-03 07:10:00; nonstop; 126 minutes. Local airport times.

2027-05-23 → 2027-06-04 · Axel-exclusive $230.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.
  • Frontier Airlines F91407 / F92197: BUF 2027-06-04 13:15:00 → ORD 2027-06-04 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-06-04 13:15:00 → ATL 2027-06-04 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-06-04 16:46:00 → ORD 2027-06-04 18:03:00.

2027-05-23 → 2027-06-04 · Axel-exclusive $325.00

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.
  • American Airlines AA2306: BUF 2027-06-04 18:49:00 → ORD 2027-06-04 19:59:00; nonstop; 130 minutes. Local airport times.

2027-05-23 → 2027-06-06 · Axel-exclusive $230.00

  • Frontier Airlines F91901 / F91692: ORD 2027-05-23 05:35:00 → BUF 2027-05-23 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-23 05:35:00 → MCO 2027-05-23 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-23 10:46:00 → BUF 2027-05-23 13:35:00.
  • Frontier Airlines F91407 / F92197: BUF 2027-06-06 13:15:00 → ORD 2027-06-06 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-06-06 13:15:00 → ATL 2027-06-06 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-06-06 16:46:00 → ORD 2027-06-06 18:03:00.

2027-05-23 → 2027-06-06 · Axel-exclusive $325.00

  • American Airlines AA1073: ORD 2027-05-23 19:00:00 → BUF 2027-05-23 21:37:00; nonstop; 97 minutes. Local airport times.
  • American Airlines AA3012: BUF 2027-06-06 06:04:00 → ORD 2027-06-06 07:10:00; nonstop; 126 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Chicago (ORD) to Buffalo (BUF) · May 23, 2027 · 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 Chicago 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. 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.