Route on-time record
BUF to BOS: most on-time flights and the best time to fly
Buffalo (Buffalo Niagara International Airport) to Boston (Boston Logan International Airport). 1,167 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 1.7% were cancelled. The most reliable flight number was Republic 4788 at 7:25 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
BUF → BOS
Buffalo to Boston: 1,167 nonstop flights a year
On time (12 months)
74%
Cancelled
1.7%
avg delay 20 min
Best time to leave
Before 9 AM
85% on time vs 52% 6 to 9 PM
Most reliable airline
Republic
77% chance on time
Lowest nonstop fare seen in the next two months: $108 (JetBlue 516 on 2026-10-22). 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 4788 · sold as American Eagle, Delta Connection or United Express
7:25 AM → 9:00 AM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 90%
- Cancelled
- 2.4%
- Avg arrival delay
- 6 min
- Arrived on time 90% of the time (41 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 52%).
- Short track record (41 flights), so its score leans on the airline's record at this hour.
Limited track record · 41 flights
Find 7:25 AM flight fares Opens this date on Aviasales#2 · Republic 4666 · sold as American Eagle, Delta Connection or United Express
11:22 AM → 12:55 PM1h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (11 flights, Jun 2025 to May 2026).
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 11:22 AM flight fares Opens this date on Aviasales#3 · JetBlue 716
7:00 AM → 8:21 AM1h 24m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 81%
- Cancelled
- 1.7%
- Avg arrival delay
- 14 min
- Arrived on time 81% of the time (287 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 52%).
- 50% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 287 flights
Find JetBlue 716 fares Opens this date on Aviasales#4 · Republic 4500 · sold as American Eagle, Delta Connection or United Express
11:49 AM → 1:25 PM1h 36m nonstop
Local times, typical schedule. Last flown 2026-05-20.
79%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 86% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
- 57% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 44 flights
Find 11:49 AM flight fares Opens this date on Aviasales#5 · Envoy 3628 · sold as American Eagle
8:00 AM → 9:30 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-04-06.
77%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 81% of the time (21 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 52%).
- Short track record (21 flights), so its score leans on the airline's record at this hour.
Limited track record · 21 flights
Find 8:00 AM flight fares Opens this date on Aviasales#6 · JetBlue 1316
9:48 AM → 11:13 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-28.
76%
chance on time
- On time (history)
- 76%
- Cancelled
- 2.3%
- Avg arrival delay
- 11 min
- Arrived on time 76% of the time (42 flights, Jun 2025 to May 2026).
- Short track record (42 flights), so its score leans on the airline's record at this hour.
Limited track record · 42 flights
Find JetBlue 1316 fares Opens this date on Aviasales#7 · JetBlue 2116
10:50 AM → 11:41 AM1h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 88%
- Cancelled
- 5.6%
- Avg arrival delay
- 15 min
- Arrived on time 88% of the time (17 flights, Jun 2025 to May 2026).
- 97% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (17 flights), so its score leans on the airline's record at this hour.
Limited track record · 17 flights
Find JetBlue 2116 fares Opens this date on Aviasales#8 · Envoy 3539 · sold as American Eagle
1:57 PM → 3:29 PM1h 32m nonstop
Local times, typical schedule. Last flown 2026-04-05.
72%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 85% of the time (13 flights, Jun 2025 to May 2026).
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find 1:57 PM flight fares Opens this date on Aviasales#9 · JetBlue 1216
1:31 PM → 2:57 PM1h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.7%
- Avg arrival delay
- 21 min
- Arrived on time 73% of the time (147 flights, Jun 2025 to May 2026).
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Moderate track record · 147 flights
Find JetBlue 1216 fares Opens this date on Aviasales#10 · JetBlue 216
9:54 AM → 11:18 AM1h 24m nonstop
Local times, typical schedule. Last flown 2026-03-30.
71%
chance on time
- On time (history)
- 70%
- Cancelled
- 4.7%
- Avg arrival delay
- 29 min
- Arrived on time 70% of the time (141 flights, Jun 2025 to May 2026).
- Cancelled 4.7% of the time (7 of 148).
- 53% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 141 flights
Find JetBlue 216 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)77%
139 flights · 84% on time as flown · 1.2% cancel
- Envoy Air (sold as American Eagle)74%
62 flights · 76% on time as flown · 1.2% cancel
- JetBlue72%
966 flights · 73% on time as flown · 1.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM85%
347 flights · avg delay 14 min
- 9 AM to noon79%
316 flights · avg delay 14 min
- Noon to 3 PM70%
225 flights · avg delay 23 min
- 3 to 6 PM67%
140 flights · avg delay 25 min
- 6 to 9 PM52%
139 flights · avg delay 39 min
Best day: Tuesday (83%). Worst: Friday (72%).
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%
- Air traffic control and airport volume36%
- Airline (crew, maintenance, boarding)16%
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 BOS questions
- What time of day is best to fly BUF to BOS?
- Before 9 AM: 85% of flights arrived on time, against 52% 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 BOS?
- Republic, with a season-adjusted 77% chance of operating and arriving on time over 139 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 BOS?
- July (67% on time); the best was April (85%), 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
- BOS to BUF (return)
- BUF to ORD 73%
- BUF to LGA 77%
- 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 DTW 81%
- BUF to MDW 78%
- BUF to TPA 77%
- BUF to DEN 80%
Live status: FAA delays and ground stops