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Route on-time record

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

Atlanta (Hartsfield Jackson Atlanta International Airport) to Boston (Boston Logan International Airport). 4,904 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 2.0% were cancelled. The most reliable flight number was Delta 987 at 7:30 AM.

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

ATL → BOS

Atlanta to Boston: 4,904 nonstop flights a year

On time (12 months)

74%

Cancelled

2.0%

avg delay 18 min

Best time to leave

Before 9 AM

88% on time vs 61% 3 to 6 PM

Most reliable airline

Delta

74% chance on time

Check ATL to BOS fares

Lowest nonstop fare seen in the next two months: $132 (Frontier 3512 on 2026-11-14). 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. #1 · Delta 987

    7:30 AM → 10:04 AM2h 34m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    88%

    chance on time

    On time (history)
    90%
    Cancelled
    2.2%
    Avg arrival delay
    6 min
    • Arrived on time 90% of the time (318 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 61%).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).

    Strong track record · 318 flights

    Find Delta 987 fares Opens this date on Aviasales

  2. #2 · Delta 2432

    8:40 AM → 11:15 AM2h 35m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    86%

    chance on time

    On time (history)
    90%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 90% of the time (49 flights, Jun 2025 to May 2026).
    • Never cancelled in 49 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 61%).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).

    Limited track record · 49 flights

    Find Delta 2432 fares Opens this date on Aviasales

  3. #3 · Delta 855

    10:07 AM → 12:50 PM2h 35m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    86%

    chance on time

    On time (history)
    88%
    Cancelled
    1.6%
    Avg arrival delay
    6 min
    • Arrived on time 88% of the time (359 flights, Jun 2025 to May 2026).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 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 · 359 flights

    Find Delta 855 fares Opens this date on Aviasales

  4. #4 · JetBlue 1896

    7:00 AM → 9:36 AM2h 36m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    85%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (10 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 61%).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
    • Short track record (10 flights), so its score leans on the airline's record at this hour.

    Limited track record · 10 flights

    Find JetBlue 1896 fares Opens this date on Aviasales

  5. #5 · Delta 862

    11:10 AM → 2:38 PM2h 35m nonstop

    Local times, typical schedule. Last flown 2026-05-30.

    82%

    chance on time

    On time (history)
    84%
    Cancelled
    1.7%
    Avg arrival delay
    11 min
    • Arrived on time 84% of the time (284 flights, Jun 2025 to May 2026).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 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 · 284 flights

    Find Delta 862 fares Opens this date on Aviasales

  6. #6 · JetBlue 796

    9:52 AM → 12:27 PM2h 35m nonstop

    Local times, typical schedule. Last flown 2026-04-13.

    77%

    chance on time

    On time (history)
    81%
    Cancelled
    2.6%
    Avg arrival delay
    13 min
    • Arrived on time 81% of the time (113 flights, Jun 2025 to May 2026).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 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.

    Moderate track record · 113 flights

    Find JetBlue 796 fares Opens this date on Aviasales

  7. #7 · Delta 865

    10:40 PM → 1:13 AM2h 35m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    76%

    chance on time

    On time (history)
    79%
    Cancelled
    3.1%
    Avg arrival delay
    16 min
    • Arrived on time 79% of the time (349 flights, Jun 2025 to May 2026).
    • Cancelled 3.1% of the time (11 of 360).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).

    Strong track record · 349 flights

    Find Delta 865 fares Opens this date on Aviasales

  8. #8 · JetBlue 696

    6:00 AM → 8:45 AM2h 31m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    75%

    chance on time

    On time (history)
    77%
    Cancelled
    4.1%
    Avg arrival delay
    23 min
    • Arrived on time 77% of the time (256 flights, Jun 2025 to May 2026).
    • Cancelled 4.1% of the time (11 of 268).
    • Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 61%).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).

    Strong track record · 256 flights

    Find JetBlue 696 fares Opens this date on Aviasales

  9. #9 · Delta 350

    8:55 AM → 11:28 AM2h 35m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    73%

    chance on time

    On time (history)
    73%
    Cancelled
    2.3%
    Avg arrival delay
    15 min
    • Arrived on time 73% of the time (343 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 61%).
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).

    Strong track record · 343 flights

    Find Delta 350 fares Opens this date on Aviasales

  10. #10 · JetBlue 1096

    7:05 PM → 9:43 PM2h 38m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    72%

    chance on time

    On time (history)
    78%
    Cancelled
    0.0%
    Avg arrival delay
    17 min
    • Arrived on time 78% of the time (64 flights, Jun 2025 to May 2026).
    • Never cancelled in 64 scheduled flights.
    • Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
    • 59% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 64 flights

    Find JetBlue 1096 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Delta Air Lines74%

    3,658 flights · 75% on time as flown · 1.8% cancel

  • JetBlue69%

    846 flights · 71% on time as flown · 2.6% cancel

  • Spirit Airlines68%

    50 flights · 60% on time as flown · 1.5% cancel

  • Frontier Airlines64%

    350 flights · 65% on time as flown · 2.0% cancel

On time by departure time

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

  • Before 9 AM88%

    1,034 flights · avg delay 9 min

  • 9 AM to noon83%

    854 flights · avg delay 10 min

  • Noon to 3 PM68%

    1,076 flights · avg delay 21 min

  • 3 to 6 PM61%

    664 flights · avg delay 27 min

  • 6 to 9 PM63%

    709 flights · avg delay 27 min

  • After 9 PM72%

    567 flights · avg delay 18 min

Best day: Saturday (81%). Worst: Sunday (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.

J
78
F
82
M
80
A
77
M
72
J
72
J
67
A
76
S
75
O
81
N
86
D
79

What delays this route

  • Air traffic control and airport volume36%
  • Airline (crew, maintenance, boarding)36%
  • Late-arriving aircraft24%
  • Severe weather4%

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

ATL to BOS questions

What time of day is best to fly ATL to BOS?
Before 9 AM: 88% of flights arrived on time, against 61% 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 ATL to BOS?
Delta, with a season-adjusted 74% chance of operating and arriving on time over 3,658 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 ATL to BOS?
July (67% on time); the best was November (86%), 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 ATL

Live status: FAA delays and ground stops