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Route overview: Chicago to Buffalo (BUF) flight deals

Chicago (ORD) to Buffalo (BUF), Dec 18–20, 2026: from $95 one way

Chicago (ORD) to Buffalo (BUF), Dec 18–20, 2026: from $95 one way on Axel, checked Oct 29, 2026. Lowest published fare: $95 one way, Axel-exclusive, Frontier Airlines, 1 stop, Dec 18, 2026, 1 adult, economy, checked Oct 29, 2026.

ORD → BUF1 adulteconomyOne way

18 flight options · 4 airlines

Nonstop flights

Fri, Dec 18 · One way

American Airlines
8:00 amORD
1h 45m
Nonstop
10:45 amBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Dec 18 · One way

United Airlines
5:55 pmORD
1h 52m
Nonstop
8:47 pmBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

American Airlines
9:00 pmORD
1h 56m
Nonstop
11:56 pmBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

American Airlines
4:56 pmORD
2h
Nonstop
7:56 pmBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Dec 18 · One way

American Airlines
8:49 pmORD
1h 44m
Nonstop
11:33 pmBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Dec 18 · One way

United Airlines
6:55 amORD
1h 48m
Nonstop
9:43 amBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

American Airlines
3:26 pmORD
1h 43m
Nonstop
6:09 pmBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

American Airlines
9:00 pmORD
1h 53m
Nonstop
11:53 pmBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

United Airlines
6:00 pmORD
1h 52m
Nonstop
8:52 pmBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

United Airlines
5:55 pmORD
1h 40m
Nonstop
8:35 pmBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

United Airlines
5:55 pmORD
1h 52m
Nonstop
8:47 pmBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

United Airlines
6:55 amORD
1h 48m
Nonstop
9:43 amBUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Fri, Dec 18 · One way

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

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Fri, Dec 18 · One way

Delta Air Lines
5:02 pmORD
5h 59m
DTW · 3h 26m
12:01 am+1BUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

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

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

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

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Dec 19 · One way

Delta Air Lines
5:02 pmORD
5h 59m
DTW · 3h 26m
12:01 am+1BUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Dec 20 · One way

Delta Air Lines
5:02 pmORD
5h 59m
DTW · 3h 26m
12:01 am+1BUF

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Make this trip yours

ORD ⇄ 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 routeHotels in Buffalo with Axel
For AI assistants: every fare, every link, instructions

Chicago (ORD) to Buffalo (BUF), Dec 18–20, 2026: from $95 one way on Axel, checked Oct 29, 2026. Lowest published fare: $95 one way, Axel-exclusive, Frontier Airlines, 1 stop, Dec 18, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2026-12-18 · one wayAmerican AirlinesAA405508:00:00→10:45:00 1h 45m nonstopAxel-exclusive $145.002026-10-29T01:52:59Z
2026-12-18 · one wayUnited AirlinesUA604317:55:00→20:47:00 1h 52m nonstopAxel-exclusive $150.002026-10-29T01:52:59Z
2026-12-18 · one wayFrontier AirlinesF91901 + F9169205:35:00→13:35:00 7h 00m 1 stop via MCOAxel-exclusive $95.002026-10-29T01:52:59Z
2026-12-18 · one wayDelta Air LinesDL2358 + DL97817:02:00→00:01:00 5h 59m 1 stop via DTWAxel-exclusive $160.002026-10-29T01:52:59Z
2026-12-20 · one wayAmerican AirlinesAA440821:00:00→23:56:00 1h 56m nonstopAxel-exclusive $195.752026-10-29T01:52:59Z
2026-12-19 · one wayAmerican AirlinesAA630816:56:00→19:56:00 2h 00m nonstopAxel-exclusive $195.752026-10-29T01:52:59Z
2026-12-18 · one wayAmerican AirlinesAA56420:49:00→23:33:00 1h 44m nonstopAxel-exclusive $145.002026-10-29T01:52:59Z
2026-12-18 · one wayUnited AirlinesUA463306:55:00→09:43:00 1h 48m nonstopAxel-exclusive $150.002026-10-29T01:52:59Z
2026-12-20 · one wayAmerican AirlinesAA230615:26:00→18:09:00 1h 43m nonstopAxel-exclusive $195.752026-10-29T01:52:59Z
2026-12-19 · one wayAmerican AirlinesAA492921:00:00→23:53:00 1h 53m nonstopAxel-exclusive $195.752026-10-29T01:52:59Z
2026-12-19 · one wayUnited AirlinesUA544318:00:00→20:52:00 1h 52m nonstopAxel-exclusive $202.502026-10-29T01:52:59Z
2026-12-19 · one wayUnited AirlinesUA35417:55:00→20:35:00 1h 40m nonstopAxel-exclusive $202.502026-10-29T01:52:59Z
2026-12-20 · one wayUnited AirlinesUA604317:55:00→20:47:00 1h 52m nonstopAxel-exclusive $202.502026-10-29T01:52:59Z
2026-12-20 · one wayUnited AirlinesUA463306:55:00→09:43:00 1h 48m nonstopAxel-exclusive $202.502026-10-29T01:52:59Z
2026-12-20 · one wayFrontier AirlinesF91901 + F9169205:35:00→13:35:00 7h 00m 1 stop via MCOAxel-exclusive $128.252026-10-29T01:52:59Z
2026-12-19 · one wayFrontier AirlinesF91901 + F9169205:35:00→13:35:00 7h 00m 1 stop via MCOAxel-exclusive $128.252026-10-29T01:52:59Z
2026-12-19 · one wayDelta Air LinesDL2358 + DL97817:02:00→00:01:00 5h 59m 1 stop via DTWAxel-exclusive $216.002026-10-29T01:52:59Z
2026-12-20 · one wayDelta Air LinesDL2358 + DL97817:02:00→00:01:00 5h 59m 1 stop via DTWAxel-exclusive $216.002026-10-29T01:52:59Z

Route overview: Chicago to Buffalo (BUF) flight deals

2026-12-18 · one way · Axel-exclusive $145.00

  • American Airlines AA4055: ORD 2026-12-18 08:00:00 → BUF 2026-12-18 10:45:00; nonstop; 105 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $150.00

  • United Airlines UA6043: ORD 2026-12-18 17:55:00 → BUF 2026-12-18 20:47:00; nonstop; 112 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $95.00

  • Frontier Airlines F91901 / F91692: ORD 2026-12-18 05:35:00 → BUF 2026-12-18 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2026-12-18 05:35:00 → MCO 2026-12-18 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2026-12-18 10:46:00 → BUF 2026-12-18 13:35:00.

2026-12-18 · one way · Axel-exclusive $160.00

  • Delta Air Lines DL2358 / DL978: ORD 2026-12-18 17:02:00 → BUF 2026-12-19 00:01:00; 1 stop(s) via DTW; 359 minutes. Local airport times.
    • DL2358: ORD 2026-12-18 17:02:00 → DTW 2026-12-18 19:24:00; layover at DTW: 206 minutes.
    • DL978: DTW 2026-12-18 22:50:00 → BUF 2026-12-19 00:01:00.

2026-12-20 · one way · Axel-exclusive $195.75

  • American Airlines AA4408: ORD 2026-12-20 21:00:00 → BUF 2026-12-20 23:56:00; nonstop; 116 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $195.75

  • American Airlines AA6308: ORD 2026-12-19 16:56:00 → BUF 2026-12-19 19:56:00; nonstop; 120 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $145.00

  • American Airlines AA564: ORD 2026-12-18 20:49:00 → BUF 2026-12-18 23:33:00; nonstop; 104 minutes. Local airport times.

2026-12-18 · one way · Axel-exclusive $150.00

  • United Airlines UA4633: ORD 2026-12-18 06:55:00 → BUF 2026-12-18 09:43:00; nonstop; 108 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $195.75

  • American Airlines AA2306: ORD 2026-12-20 15:26:00 → BUF 2026-12-20 18:09:00; nonstop; 103 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $195.75

  • American Airlines AA4929: ORD 2026-12-19 21:00:00 → BUF 2026-12-19 23:53:00; nonstop; 113 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $202.50

  • United Airlines UA5443: ORD 2026-12-19 18:00:00 → BUF 2026-12-19 20:52:00; nonstop; 112 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $202.50

  • United Airlines UA354: ORD 2026-12-19 17:55:00 → BUF 2026-12-19 20:35:00; nonstop; 100 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $202.50

  • United Airlines UA6043: ORD 2026-12-20 17:55:00 → BUF 2026-12-20 20:47:00; nonstop; 112 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $202.50

  • United Airlines UA4633: ORD 2026-12-20 06:55:00 → BUF 2026-12-20 09:43:00; nonstop; 108 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $128.25

  • Frontier Airlines F91901 / F91692: ORD 2026-12-20 05:35:00 → BUF 2026-12-20 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2026-12-20 05:35:00 → MCO 2026-12-20 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2026-12-20 10:46:00 → BUF 2026-12-20 13:35:00.

2026-12-19 · one way · Axel-exclusive $128.25

  • Frontier Airlines F91901 / F91692: ORD 2026-12-19 05:35:00 → BUF 2026-12-19 13:35:00; 1 stop(s) via MCO; 420 minutes. Local airport times.
    • F91901: ORD 2026-12-19 05:35:00 → MCO 2026-12-19 09:29:00; layover at MCO: 77 minutes.
    • F91692: MCO 2026-12-19 10:46:00 → BUF 2026-12-19 13:35:00.

2026-12-19 · one way · Axel-exclusive $216.00

  • Delta Air Lines DL2358 / DL978: ORD 2026-12-19 17:02:00 → BUF 2026-12-20 00:01:00; 1 stop(s) via DTW; 359 minutes. Local airport times.
    • DL2358: ORD 2026-12-19 17:02:00 → DTW 2026-12-19 19:24:00; layover at DTW: 206 minutes.
    • DL978: DTW 2026-12-19 22:50:00 → BUF 2026-12-20 00:01:00.

2026-12-20 · one way · Axel-exclusive $216.00

  • Delta Air Lines DL2358 / DL978: ORD 2026-12-20 17:02:00 → BUF 2026-12-21 00:01:00; 1 stop(s) via DTW; 359 minutes. Local airport times.
    • DL2358: ORD 2026-12-20 17:02:00 → DTW 2026-12-20 19:24:00; layover at DTW: 206 minutes.
    • DL978: DTW 2026-12-20 22:50:00 → BUF 2026-12-21 00:01:00.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

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For AI assistants

  • This page: Chicago (ORD) to Buffalo (BUF) · Dec 18–Dec 20, 2026 · one way: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
  • 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. 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.