Travel with Axel,
get the best price.

Buffalo → Chicago

May 28, 2027 · return May 31, 2027

BUF → ORD1 adulteconomyRound trip

6 flight options · 4 airlines

Nonstop flights

Fri, May 28 – Mon, May 31

American Airlines
11:10 amBUF
2h 20m
Nonstop
12:30 pmORD
American Airlines
7:00 pmORD
1h 37m
Nonstop
9:37 pmBUF

Round-trip total · 1 adult · Taxes included

Fri, May 28 – Mon, May 31

United Airlines
6:30 amBUF
2h 14m
Nonstop
7:44 amORD
United Airlines
5:51 pmORD
1h 45m
Nonstop
8:36 pmBUF

Round-trip total · 1 adult · Taxes included

Fri, May 28 – Mon, May 31

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

Round-trip total · 1 adult · Taxes included

Fri, May 28 – Mon, May 31

United Airlines
1:53 pmBUF
2h 2m
Nonstop
2:55 pmORD
United Airlines
5:51 pmORD
1h 45m
Nonstop
8:36 pmBUF

Round-trip total · 1 adult · Taxes included

One-stop flights

Fri, May 28 – Mon, May 31

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

Round-trip total · 1 adult · Taxes included

Fri, May 28 – Mon, May 31

Delta Air Lines
6:35 amBUF
5h 24m
DTW · 2h 28m
10:59 amORD
Delta Air Lines
5:02 pmORD
5h 59m
DTW · 3h 26m
12:01 am+1BUF

Round-trip total · 1 adult · Taxes included

Make this trip yours

BUF ⇄ ORD

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

More dates

All dates for this routeNov 5, 2026 → Nov 8, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Dec 5, 2026 → Dec 12, 2026Dec 17, 2026 → Dec 20, 2026Dec 26, 2026 → Jan 2, 2027Jan 5, 2027 · One wayJan 16, 2027 → Jan 23, 2027Feb 5, 2027 → Feb 8, 2027Apr 3, 2027 → Apr 10, 2027Jun 26, 2027 → Jul 3, 2027Sep 17, 2027 → Sep 20, 2027
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)
2027-05-28 → 2027-05-31American AirlinesAA4969 / AA1073$379.502026-10-29T00:54:21Z
2027-05-28 → 2027-05-31United AirlinesUA5288 / UA1335$391.002026-10-29T00:54:21Z
2027-05-28 → 2027-05-31Frontier AirlinesF91407 + F92197 / F91901 + F91692$253.002026-10-29T00:54:21Z
2027-05-28 → 2027-05-31Delta Air LinesDL1721 + DL3902 / DL2358 + DL978$437.002026-10-29T00:54:21Z
2027-05-28 → 2027-05-31American AirlinesAA2306 / AA1073$379.502026-10-29T00:54:21Z
2027-05-28 → 2027-05-31United AirlinesUA4381 / UA1335$391.002026-10-29T00:54:21Z

2027-05-28 → 2027-05-31 · $379.50

  • American Airlines AA4969: BUF 2027-05-28 11:10:00 → ORD 2027-05-28 12:30:00; nonstop; 140 minutes. Local airport times.
  • American Airlines AA1073: ORD 2027-05-31 19:00:00 → BUF 2027-05-31 21:37:00; nonstop; 97 minutes. Local airport times.

2027-05-28 → 2027-05-31 · $391.00

  • United Airlines UA5288: BUF 2027-05-28 06:30:00 → ORD 2027-05-28 07:44:00; nonstop; 134 minutes. Local airport times.
  • United Airlines UA1335: ORD 2027-05-31 17:51:00 → BUF 2027-05-31 20:36:00; nonstop; 105 minutes. Local airport times.

2027-05-28 → 2027-05-31 · $253.00

  • Frontier Airlines F91407 / F92197: BUF 2027-05-28 13:15:00 → ORD 2027-05-28 18:03:00; 1 stop(s) via ATL; 348 minutes. Local airport times.
    • F91407: BUF 2027-05-28 13:15:00 → ATL 2027-05-28 15:36:00; layover at ATL: 70 minutes.
    • F92197: ATL 2027-05-28 16:46:00 → ORD 2027-05-28 18:03:00.
  • Frontier Airlines F91901 / F91692: ORD 2027-05-31 05:35:00 → BUF 2027-05-31 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2027-05-31 05:35:00 → MCO 2027-05-31 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2027-05-31 10:46:00 → BUF 2027-05-31 13:35:00.

2027-05-28 → 2027-05-31 · $437.00

  • Delta Air Lines DL1721 / DL3902: BUF 2027-05-28 06:35:00 → ORD 2027-05-28 10:59:00; 1 stop(s) via DTW; 324 minutes. Local airport times.
    • DL1721: BUF 2027-05-28 06:35:00 → DTW 2027-05-28 07:52:00; layover at DTW: 148 minutes.
    • DL3902: DTW 2027-05-28 10:20:00 → ORD 2027-05-28 10:59:00.
  • Delta Air Lines DL2358 / DL978: ORD 2027-05-31 17:02:00 → BUF 2027-06-01 00:01:00; 1 stop(s) via DTW; 359 minutes. Local airport times.
    • DL2358: ORD 2027-05-31 17:02:00 → DTW 2027-05-31 19:24:00; layover at DTW: 206 minutes.
    • DL978: DTW 2027-05-31 22:50:00 → BUF 2027-06-01 00:01:00.

2027-05-28 → 2027-05-31 · $379.50

  • American Airlines AA2306: BUF 2027-05-28 18:49:00 → ORD 2027-05-28 19:59:00; nonstop; 130 minutes. Local airport times.
  • American Airlines AA1073: ORD 2027-05-31 19:00:00 → BUF 2027-05-31 21:37:00; nonstop; 97 minutes. Local airport times.

2027-05-28 → 2027-05-31 · $391.00

  • United Airlines UA4381: BUF 2027-05-28 13:53:00 → ORD 2027-05-28 14:55:00; nonstop; 122 minutes. Local airport times.
  • United Airlines UA1335: ORD 2027-05-31 17:51:00 → BUF 2027-05-31 20:36:00; nonstop; 105 minutes. Local airport times.

More dates for this route