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ATIS Alerts Smart Flight Search

Find the flight least likely to be delayed

Beta

We rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.

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.

Best trips

27 nonstop. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.

  1. Best overall#1 · Nonstop · 1h 20m

    6:00 AM → 7:20 AM

    87%

    arrive on time

    6:00 AM LGA → 7:20 AM BOS1h 20m

    Republic 4374 · sold as American Eagle, Delta Connection or United Express · also flew as 4377, 5852

    Embraer E175 · 12–22 yrs old
    92% on time · 4.9% cancel
    Find 6:00 AM flight fares Opens this date on Aviasales

  2. #2 · Nonstop · 1h 21m

    6:59 AM → 8:20 AM

    86%

    arrive on time

    6:59 AM LGA → 8:20 AM BOS1h 21m

    Republic 5793 · sold as American Eagle, Delta Connection or United Express · also flew as 5825, 5806

    Embraer E175 · 17–21 yrs old
    91% on time · 5.3% cancel
    Find 6:59 AM flight fares Opens this date on Aviasales

  3. #3 · Nonstop · 1h 24m

    8:30 AM → 9:54 AM

    84%

    arrive on time

    8:30 AM LGA → 9:54 AM BOS1h 24m

    Republic 5677 · sold as American Eagle, Delta Connection or United Express

    Embraer E175 · 18–19 yrs old
    88% on time · 4.3% cancel
    Find 8:30 AM flight fares Opens this date on Aviasales

  4. #4 · Nonstop · 1h 15m

    8:00 AM → 9:10 AM

    82%

    arrive on time

    8:00 AM LGA → 9:10 AM BOS1h 15m

    Republic 5759 · sold as American Eagle, Delta Connection or United Express · also flew as 4555

    Embraer E175 · 12–19 yrs old
    87% on time · 5.2% cancel
    Find 8:00 AM flight fares Opens this date on Aviasales

  5. #5 · Nonstop · 1h 19m

    9:00 AM → 10:19 AM

    82%

    arrive on time

    9:00 AM LGA → 10:19 AM BOS1h 19m

    Republic 4373 · sold as American Eagle, Delta Connection or United Express · also flew as 5844, 5835

    Embraer E175 · 12–21 yrs old
    86% on time · 4.8% cancel
    Find 9:00 AM flight fares Opens this date on Aviasales

  6. #6 · Nonstop · 1h 20m

    10:30 AM → 11:50 AM

    81%

    arrive on time

    10:30 AM LGA → 11:50 AM BOS1h 20m

    Republic 4367 · sold as American Eagle, Delta Connection or United Express

    Embraer E175 · 12–19 yrs old
    86% on time · 6.5% cancel
    Find 10:30 AM flight fares Opens this date on Aviasales

  7. #7 · Nonstop · 1h 29m

    12:48 PM → 2:17 PM

    79%

    arrive on time

    12:48 PM LGA → 2:17 PM BOS1h 29m

    Republic 4569 · sold as American Eagle, Delta Connection or United Express

    Embraer E175 · 12–19 yrs old
    83% on time · 4.3% cancel
    Find 12:48 PM flight fares Opens this date on Aviasales

  8. #8 · Nonstop · 1h 20m

    11:00 AM → 12:15 PM

    78%

    arrive on time

    11:00 AM LGA → 12:15 PM BOS1h 20m

    Republic 5745 · sold as American Eagle, Delta Connection or United Express · also flew as 4378

    Embraer E175 · 12–19 yrs old
    81% on time · 3.5% cancel
    Find 11:00 AM flight fares Opens this date on Aviasales

  9. #9 · Nonstop · 1h 20m

    12:00 PM → 1:15 PM

    77%

    arrive on time

    12:00 PM LGA → 1:15 PM BOS1h 20m

    Republic 5761 · sold as American Eagle, Delta Connection or United Express

    Embraer E175 · 18–19 yrs old
    80% on time · 3.9% cancel
    Find 12:00 PM flight fares Opens this date on Aviasales

  10. #10 · Nonstop · 1h 15m

    10:00 AM → 11:15 AM

    76%

    arrive on time

    10:00 AM LGA → 11:15 AM BOS1h 15m

    Republic 5728 · sold as American Eagle, Delta Connection or United Express

    Embraer E175 · 18–19 yrs old
    81% on time · 6.1% cancel
    Find 10:00 AM flight fares Opens this date on Aviasales

Aircraft and ages come from the planes each flight number actually flew in the last 3 months of data (FAA registry build years); airlines can swap planes.

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%).

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