Route on-time record
CLT to BUF: most on-time flights and the best time to fly
Charlotte (Charlotte Douglas International Airport) to Buffalo (Buffalo Niagara International Airport). 1,219 nonstop flights in Jun 2025 to May 2026, 72% arrived within 15 minutes and 2.1% were cancelled. The most reliable flight number was American 1203 at 11:01 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
CLT → BUF
Charlotte to Buffalo: 1,219 nonstop flights a year
On time (12 months)
72%
Cancelled
2.1%
avg delay 21 min
Best time to leave
Before 9 AM
88% on time vs 62% 3 to 6 PM
Most reliable airline
American
70% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · American 1203
11:01 AM → 12:51 PM1h 50m nonstop
Local times, typical schedule. Last flown 2026-04-06.
83%
chance on time
- On time (history)
- 86%
- Cancelled
- 2.4%
- Avg arrival delay
- 11 min
- Arrived on time 86% of the time (279 flights, Jun 2025 to May 2026).
- Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
Strong track record · 279 flights
Find American 1203 fares Opens this date on Aviasales#2 · American 1915
11:16 AM → 1:05 PM1h 49m nonstop
Local times, typical schedule. Last flown 2026-05-20.
80%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 86% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
- Short track record (44 flights), so its score leans on the airline's record at this hour.
Limited track record · 44 flights
Find American 1915 fares Opens this date on Aviasales#3 · American 1616
11:10 AM → 12:55 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
- Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
- 52% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find American 1616 fares Opens this date on Aviasales#4 · American 1614
4:51 PM → 6:41 PM1h 50m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 1919; its record covers all of them.
69%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 15 min
- Arrived on time 75% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's least on-time window (3 to 6 PM: 62% on time; Before 9 AM: 88%).
- Departs inside CLT's trouble window: 63% of its 48 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 55 flights
Find American 1614 fares Opens this date on Aviasales#5 · American 1621
4:04 PM → 5:54 PM1h 50m nonstop
Local times, typical schedule. Last flown 2026-04-04.
65%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 75% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 62% on time; Before 9 AM: 88%).
- Departs inside CLT's trouble window: 63% of its 48 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find American 1621 fares Opens this date on Aviasales#6 · American 703
10:00 PM → 11:47 PM1h 47m nonstop
Local times, typical schedule. Last flown 2026-05-31.
64%
chance on time
- On time (history)
- 66%
- Cancelled
- 3.4%
- Avg arrival delay
- 26 min
- Arrived on time 66% of the time (197 flights, Jun 2025 to May 2026).
- Cancelled 3.4% of the time (7 of 204).
- Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
Moderate track record · 197 flights
Find American 703 fares Opens this date on Aviasales#7 · American 2429
10:06 PM → 11:50 PM1h 44m nonstop
Local times, typical schedule. Last flown 2026-04-06.
63%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.9%
- Avg arrival delay
- 39 min
- Arrived on time 64% of the time (115 flights, Jun 2025 to May 2026).
- Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
- 57% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 115 flights
Find American 2429 fares Opens this date on Aviasales#8 · American 2301
5:12 PM → 7:00 PM1h 48m nonstop
Local times, typical schedule. Last flown 2026-04-06.
62%
chance on time
- On time (history)
- 62%
- Cancelled
- 2.1%
- Avg arrival delay
- 27 min
- Arrived on time 62% of the time (140 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 62% on time; Before 9 AM: 88%).
- Departs inside CLT's trouble window: 63% of its 48 ground stops and delay programs started between 2 PM and 8 PM.
- 50% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 140 flights
Find American 2301 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- American Airlines70%
1,218 flights · 71% on time as flown · 2.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM88%
51 flights · avg delay 9 min
- 9 AM to noon84%
394 flights · avg delay 10 min
- Noon to 3 PM64%
47 flights · avg delay 20 min
- 3 to 6 PM62%
371 flights · avg delay 27 min
- 6 to 9 PM73%
56 flights · avg delay 26 min
- After 9 PM64%
300 flights · avg delay 30 min
Best day: Wednesday (78%). Worst: Thursday (66%).
Smarter routing
Nearby airports that run more on time
CLT → ROC 73% chance on time
Charlotte Douglas International Airport to Frederick Douglass Greater Rochester International Airport · 1,008 flights a year · 55 mi from your airports · yours: 70%
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft49%
- Airline (crew, maintenance, boarding)34%
- Severe weather9%
- Air traffic control and airport volume8%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
CLT to BUF questions
- What time of day is best to fly CLT to BUF?
- Before 9 AM: 88% of flights arrived on time, against 62% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from CLT to BUF?
- American, with a season-adjusted 70% chance of operating and arriving on time over 1,218 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on CLT to BUF?
- July (59% on time); the best was September (81%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from CLT
- BUF to CLT (return)
- CLT to MCO 69%
- CLT to ATL 82%
- CLT to LGA 72%
- CLT to ORD 72%
- CLT to BOS 75%
- CLT to DFW 78%
- CLT to EWR 73%
- CLT to MIA 75%
- CLT to DTW 82%
- CLT to BNA 76%
- CLT to PHL 77%
- CLT to TPA 74%
Live status: FAA delays and ground stops