Route on-time record

LGA to BOS: most on-time flights and the best time to fly

New York (LaGuardia Airport) to Boston (Boston Logan International Airport). 7,148 nonstop flights in Jun 2025 to May 2026, 73% arrived within 15 minutes and 5.3% were cancelled. The most reliable flight number was Republic 4374 at 6:00 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

LGA → BOS

New York to Boston: 7,148 nonstop flights a year

On time (12 months)

73%

Cancelled

5.3%

avg delay 20 min

Best time to leave

Before 9 AM

89% on time vs 59% 6 to 9 PM

Most reliable airline

Delta

74% chance on time

Check LGA to BOS fares

Lowest nonstop fare seen in the next two months: $102 (American 3224 on 2026-10-21). 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 4374 · sold as American Eagle, Delta Connection or United Express
6:00 AM → 7:20 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Republic 4377, 5852, 5766; its record covers all of them.
87%
chance on time
On time (history)
92%
Cancelled
4.6%
Avg arrival delay
5 min
- Arrived on time 92% of the time (308 flights, Jun 2025 to May 2026).
- Cancelled 4.6% of the time (15 of 323).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 59%).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
Strong track record · 308 flights
Find 6:00 AM flight fares Opens this date on Aviasales
#2 · Republic 5793 · sold as American Eagle, Delta Connection or United Express
6:59 AM → 8:20 AM1h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Republic 5825, 5806; its record covers all of them.
86%
chance on time
On time (history)
92%
Cancelled
5.1%
Avg arrival delay
6 min
- Arrived on time 92% of the time (75 flights, Jun 2025 to May 2026).
- Cancelled 5.1% of the time (4 of 79).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 59%).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
Moderate track record · 75 flights
Find 6:59 AM flight fares Opens this date on Aviasales
#3 · Republic 5677 · sold as American Eagle, Delta Connection or United Express
8:30 AM → 9:54 AM1h 24m nonstop
Local times, typical schedule. Last flown 2026-05-29.
84%
chance on time
On time (history)
95%
Cancelled
0.0%
Avg arrival delay
2 min
- Arrived on time 95% of the time (38 flights, Jun 2025 to May 2026).
- Never cancelled in 38 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 59%).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
Limited track record · 38 flights
Find 8:30 AM flight fares Opens this date on Aviasales
#4 · Republic 5759 · sold as American Eagle, Delta Connection or United Express
7:59 AM → 9:10 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Republic 4555; its record covers all of them.
83%
chance on time
On time (history)
89%
Cancelled
5.0%
Avg arrival delay
7 min
- Arrived on time 89% of the time (170 flights, Jun 2025 to May 2026).
- Cancelled 5.0% of the time (9 of 179).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 59%).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
Moderate track record · 170 flights
Find 7:59 AM flight fares Opens this date on Aviasales
#5 · Republic 4373 · sold as American Eagle, Delta Connection or United Express
9:00 AM → 10:19 AM1h 19m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Republic 5844, 5835, 5670; its record covers all of them.
82%
chance on time
On time (history)
88%
Cancelled
4.3%
Avg arrival delay
7 min
- Arrived on time 88% of the time (156 flights, Jun 2025 to May 2026).
- Cancelled 4.3% of the time (7 of 163).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
Moderate track record · 156 flights
Find 9:00 AM flight fares Opens this date on Aviasales
#6 · Republic 4367 · sold as American Eagle, Delta Connection or United Express
10:30 AM → 11:50 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-30.
81%
chance on time
On time (history)
91%
Cancelled
8.1%
Avg arrival delay
5 min
- Arrived on time 91% of the time (102 flights, Jun 2025 to May 2026).
- Cancelled 8.1% of the time (9 of 111).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
Moderate track record · 102 flights
Find 10:30 AM flight fares Opens this date on Aviasales
#7 · Republic 4569 · sold as American Eagle, Delta Connection or United Express
12:48 PM → 2:17 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
5 min
- Arrived on time 89% of the time (38 flights, Jun 2025 to May 2026).
- Never cancelled in 38 scheduled flights.
- Departs inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Limited track record · 38 flights
Find 12:48 PM flight fares Opens this date on Aviasales
#8 · Republic 5745 · sold as American Eagle, Delta Connection or United Express
11:00 AM → 12:15 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Republic 4378; its record covers all of them.
78%
chance on time
On time (history)
81%
Cancelled
2.6%
Avg arrival delay
12 min
- Arrived on time 81% of the time (334 flights, Jun 2025 to May 2026).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Strong track record · 334 flights
Find 11:00 AM flight fares Opens this date on Aviasales
#9 · Republic 5761 · sold as American Eagle, Delta Connection or United Express
12:00 PM → 1:15 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
On time (history)
80%
Cancelled
3.2%
Avg arrival delay
14 min
- Arrived on time 80% of the time (333 flights, Jun 2025 to May 2026).
- Cancelled 3.2% of the time (11 of 344).
- Departs inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Strong track record · 333 flights
Find 12:00 PM flight fares Opens this date on Aviasales
#10 · Republic 5728 · sold as American Eagle, Delta Connection or United Express
10:00 AM → 11:15 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
On time (history)
85%
Cancelled
7.0%
Avg arrival delay
8 min
- Arrived on time 85% of the time (120 flights, Jun 2025 to May 2026).
- Cancelled 7.0% of the time (9 of 129).
- Departs outside LGA's trouble window (noon to 6 PM, when 54% of its 285 ground stops and delay programs started).
Moderate track record · 120 flights
Find 10:00 AM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Delta Air Lines74%
562 flights · 78% on time as flown · 4.2% cancel
Republic Airways (sold as American Eagle, Delta Connection or United Express)69%
6,586 flights · 73% on time as flown · 5.4% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM89%
1,556 flights · avg delay 7 min
9 AM to noon80%
1,255 flights · avg delay 13 min
Noon to 3 PM75%
1,414 flights · avg delay 18 min
3 to 6 PM61%
1,499 flights · avg delay 29 min
6 to 9 PM59%
1,108 flights · avg delay 32 min
After 9 PM66%
316 flights · avg delay 30 min

Best day: Saturday (87%). Worst: Sunday (75%).

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

Air traffic control and airport volume37%
Late-arriving aircraft33%
Airline (crew, maintenance, boarding)26%
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

LGA to BOS questions

What time of day is best to fly LGA to BOS?: Before 9 AM: 89% of flights arrived on time, against 59% 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 LGA to BOS?: Delta, with a season-adjusted 74% chance of operating and arriving on time over 562 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 LGA to BOS?: September (72% on time); the best was November (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.

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