Route on-time record
BUF to LGA: most on-time flights and the best time to fly
Buffalo (Buffalo Niagara International Airport) to New York (LaGuardia Airport). 1,898 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 5.7% were cancelled. The most reliable flight number was Republic 4603 at 11:49 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
BUF → LGA
Buffalo to New York: 1,898 nonstop flights a year
On time (12 months)
77%
Cancelled
5.7%
avg delay 18 min
Best time to leave
Before 9 AM
83% on time vs 57% 6 to 9 PM
Most reliable airline
Republic
73% chance on time
Lowest nonstop fare seen in the next two months: $109 (American 4738 on 2026-10-20). 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 · Republic 4603 · sold as American Eagle, Delta Connection or United Express
11:49 AM → 1:18 PM1h 29m nonstop
Local times, typical schedule. Last flown 2026-05-20.
79%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 89% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Lands inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- Short track record (44 flights), so its score leans on the airline's record at this hour.
Limited track record · 44 flights
Find 11:49 AM flight fares Opens this date on Aviasales#2 · Republic 4737 · sold as American Eagle, Delta Connection or United Express
7:00 AM → 8:30 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-20.
77%
chance on time
- On time (history)
- 82%
- Cancelled
- 6.1%
- Avg arrival delay
- 14 min
- Arrived on time 82% of the time (214 flights, Jun 2025 to May 2026).
- Cancelled 6.1% of the time (14 of 229).
- Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 9 PM: 57%).
Strong track record · 214 flights
Find 7:00 AM flight fares Opens this date on Aviasales#3 · Republic 4385 · sold as American Eagle, Delta Connection or United Express
5:12 PM → 6:44 PM1h 32m nonstop
Local times, typical schedule. Last flown 2026-05-19.
76%
chance on time
- On time (history)
- 89%
- Cancelled
- 2.6%
- Avg arrival delay
- 9 min
- Arrived on time 89% of the time (37 flights, Jun 2025 to May 2026).
- Short track record (37 flights), so its score leans on the airline's record at this hour.
Limited track record · 37 flights
Find 5:12 PM flight fares Opens this date on Aviasales#4 · Republic 5842 · sold as American Eagle, Delta Connection or United Express
6:04 AM → 7:30 AM1h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Republic 4522, 5786; its record covers all of them.
75%
chance on time
- On time (history)
- 79%
- Cancelled
- 4.3%
- Avg arrival delay
- 20 min
- Arrived on time 79% of the time (132 flights, Jun 2025 to May 2026).
- Cancelled 4.3% of the time (6 of 139).
- Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 9 PM: 57%).
Moderate track record · 132 flights
Find 6:04 AM flight fares Opens this date on Aviasales#5 · Republic 4379 · sold as American Eagle, Delta Connection or United Express
11:03 AM → 12:29 PM1h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
- Lands inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- 61% 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 11:03 AM flight fares Opens this date on Aviasales#6 · Republic 4738 · sold as American Eagle, Delta Connection or United Express
11:29 AM → 12:54 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
73%
chance on time
- On time (history)
- 75%
- Cancelled
- 4.4%
- Avg arrival delay
- 18 min
- Arrived on time 75% of the time (217 flights, Jun 2025 to May 2026).
- Cancelled 4.4% of the time (10 of 227).
- Lands inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- 52% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 217 flights
Find 11:29 AM flight fares Opens this date on Aviasales#7 · Republic 4570 · sold as American Eagle, Delta Connection or United Express
1:56 PM → 3:19 PM1h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 80% of the time (10 flights, Jun 2025 to May 2026).
- Lands inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- Short track record (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find 1:56 PM flight fares Opens this date on Aviasales#8 · Republic 5792 · sold as American Eagle, Delta Connection or United Express
5:30 PM → 6:59 PM1h 29m nonstop
Local times, typical schedule. Last flown 2026-05-06. Same departure also flew as Republic 5782; its record covers all of them.
64%
chance on time
- On time (history)
- 65%
- Cancelled
- 7.7%
- Avg arrival delay
- 28 min
- Arrived on time 65% of the time (48 flights, Jun 2025 to May 2026).
- Cancelled 7.7% of the time (4 of 52).
- Short track record (48 flights), so its score leans on the airline's record at this hour.
Limited track record · 48 flights
Find 5:30 PM flight fares Opens this date on Aviasales#9 · Republic 5799 · sold as American Eagle, Delta Connection or United Express
5:41 PM → 7:08 PM1h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
64%
chance on time
- On time (history)
- 62%
- Cancelled
- 0.0%
- Avg arrival delay
- 30 min
- Arrived on time 62% of the time (21 flights, Jun 2025 to May 2026).
- Short track record (21 flights), so its score leans on the airline's record at this hour.
Limited track record · 21 flights
Find 5:41 PM flight fares Opens this date on Aviasales#10 · Republic 4496 · sold as American Eagle, Delta Connection or United Express
4:04 PM → 5:29 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
59%
chance on time
- On time (history)
- 63%
- Cancelled
- 11.2%
- Avg arrival delay
- 33 min
- Arrived on time 63% of the time (239 flights, Jun 2025 to May 2026).
- Cancelled 11.2% of the time (30 of 269).
- Lands inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- 54% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 239 flights
Find 4:04 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Republic Airways (sold as American Eagle, Delta Connection or United Express)73%
1,898 flights · 77% on time as flown · 5.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM83%
641 flights · avg delay 15 min
- 9 AM to noon80%
424 flights · avg delay 14 min
- Noon to 3 PM78%
236 flights · avg delay 17 min
- 3 to 6 PM71%
462 flights · avg delay 25 min
- 6 to 9 PM57%
135 flights · avg delay 34 min
Best day: Saturday (89%). Worst: Thursday (80%).
Smarter routing
Nearby airports that run more on time
BUF → EWR 85% chance on time
Buffalo Niagara International Airport to Newark Liberty International Airport · 399 flights a year · 17 mi from your airports · yours: 73%
ROC → JFK 79% chance on time
Frederick Douglass Greater Rochester International Airport to John F. Kennedy International Airport · 600 flights a year · 66 mi from your airports · yours: 73%
ROC → EWR 76% chance on time
Frederick Douglass Greater Rochester International Airport to Newark Liberty International Airport · 567 flights a year · 72 mi from your airports · yours: 73%
BUF → JFK 76% chance on time
Buffalo Niagara International Airport to John F. Kennedy International Airport · 1,213 flights a year · 11 mi from your airports · yours: 73%
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 aircraft37%
- Air traffic control and airport volume30%
- Airline (crew, maintenance, boarding)29%
- Severe weather3%
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
BUF to LGA questions
- What time of day is best to fly BUF to LGA?
- Before 9 AM: 83% of flights arrived on time, against 57% for departures 6 to 9 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 BUF to LGA?
- Republic, with a season-adjusted 73% chance of operating and arriving on time over 1,898 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 BUF to LGA?
- July (75% on time); the best was September (91%), 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 BUF
- LGA to BUF (return)
- BUF to ORD 73%
- BUF to MCO 76%
- BUF to BWI 86%
- BUF to ATL 80%
- BUF to CLT 78%
- BUF to JFK 79%
- BUF to DCA 65%
- BUF to BOS 74%
- BUF to DTW 81%
- BUF to MDW 78%
- BUF to TPA 77%
- BUF to DEN 80%
Live status: FAA delays and ground stops