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Route on-time record

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

Boston (Boston Logan International Airport) to Las Vegas (Harry Reid International Airport). 1,674 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 1.1% were cancelled. The most reliable flight number was JetBlue 1177 at 7:58 AM.

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

Find me the most reliable flights fromtoonreturning(optional)

BOS → LAS

Boston to Las Vegas: 1,674 nonstop flights a year

On time (12 months)

76%

Cancelled

1.1%

avg delay 17 min

Best time to leave

Before 9 AM

82% on time vs 68% 6 to 9 PM

Most reliable airline

Delta

77% chance on time

Check BOS to LAS fares

Lowest nonstop fare seen in the next two months: $159 (United 1732 on 2026-11-04). 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 · JetBlue 1177

    7:58 AM → 10:50 AM5h 52m nonstop

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

    85%

    chance on time

    On time (history)
    88%
    Cancelled
    0.6%
    Avg arrival delay
    5 min
    • Arrived on time 88% of the time (156 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 82% on time; 6 to 9 PM: 68%).
    • Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
    • Lands inside LAS's trouble window: 51% of its 107 ground stops and delay programs started between 10 AM and 4 PM.

    Moderate track record · 156 flights

    Find JetBlue 1177 fares Opens this date on Aviasales

  2. #2 · Delta 497

    7:40 AM → 10:55 AM6h 06m nonstop

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

    81%

    chance on time

    On time (history)
    83%
    Cancelled
    1.1%
    Avg arrival delay
    11 min
    • Arrived on time 83% of the time (351 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 82% on time; 6 to 9 PM: 68%).
    • Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
    • Lands inside LAS's trouble window: 51% of its 107 ground stops and delay programs started between 10 AM and 4 PM.

    Strong track record · 351 flights

    Find Delta 497 fares Opens this date on Aviasales

  3. #3 · JetBlue 2577

    5:40 PM → 8:49 PM6h 06m nonstop

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

    81%

    chance on time

    On time (history)
    85%
    Cancelled
    1.4%
    Avg arrival delay
    12 min
    • Arrived on time 85% of the time (146 flights, Jun 2025 to May 2026).
    • Departs inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.

    Moderate track record · 146 flights

    Find JetBlue 2577 fares Opens this date on Aviasales

  4. #4 · JetBlue 2677

    6:57 AM → 9:47 AM5h 57m nonstop

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

    77%

    chance on time

    On time (history)
    77%
    Cancelled
    2.0%
    Avg arrival delay
    13 min
    • Arrived on time 77% of the time (192 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 82% on time; 6 to 9 PM: 68%).
    • Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).

    Moderate track record · 192 flights

    Find JetBlue 2677 fares Opens this date on Aviasales

  5. #5 · Delta 408

    6:55 PM → 9:59 PM6h 04m nonstop

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

    71%

    chance on time

    On time (history)
    70%
    Cancelled
    2.1%
    Avg arrival delay
    18 min
    • Arrived on time 70% of the time (136 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 82%).
    • Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).

    Moderate track record · 136 flights

    Find Delta 408 fares Opens this date on Aviasales

  6. #6 · JetBlue 477

    8:22 PM → 11:23 PM6h 01m nonstop

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

    70%

    chance on time

    On time (history)
    68%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 68% of the time (22 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 82%).
    • Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).

    Limited track record · 22 flights

    Find JetBlue 477 fares Opens this date on Aviasales

  7. #7 · JetBlue 2077

    4:45 PM → 7:36 PM5h 57m nonstop

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

    69%

    chance on time

    On time (history)
    70%
    Cancelled
    0.0%
    Avg arrival delay
    21 min
    • Arrived on time 70% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 45 scheduled flights.
    • Departs inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
    • 51% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 44 flights

    Find JetBlue 2077 fares Opens this date on Aviasales

  8. #8 · JetBlue 177

    7:12 PM → 10:21 PM6h 07m nonstop

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

    67%

    chance on time

    On time (history)
    67%
    Cancelled
    1.4%
    Avg arrival delay
    27 min
    • Arrived on time 67% of the time (141 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 82%).
    • Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).

    Moderate track record · 141 flights

    Find JetBlue 177 fares Opens this date on Aviasales

  9. #9 · JetBlue 777

    7:59 PM → 11:04 PM6h 05m nonstop

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

    65%

    chance on time

    On time (history)
    65%
    Cancelled
    0.9%
    Avg arrival delay
    26 min
    • Arrived on time 65% of the time (223 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 82%).
    • Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).

    Strong track record · 223 flights

    Find JetBlue 777 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Delta Air Lines77%

    622 flights · 78% on time as flown · 1.3% cancel

  • JetBlue74%

    1,052 flights · 75% on time as flown · 1.1% cancel

On time by departure time

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

  • Before 9 AM82%

    727 flights · avg delay 11 min

  • 9 AM to noon82%

    224 flights · avg delay 16 min

  • 3 to 6 PM69%

    325 flights · avg delay 22 min

  • 6 to 9 PM68%

    345 flights · avg delay 24 min

Best day: Tuesday (80%). Worst: Friday (74%).

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
74
F
65
M
78
A
80
M
79
J
77
J
68
A
73
S
83
O
79
N
82
D
81

What delays this route

  • Late-arriving aircraft38%
  • Airline (crew, maintenance, boarding)32%
  • Air traffic control and airport volume26%
  • 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

Finding the most reliable connections from BOS to LAS…

BOS to LAS questions

What time of day is best to fly BOS to LAS?
Before 9 AM: 82% of flights arrived on time, against 68% 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 BOS to LAS?
Delta, with a season-adjusted 77% chance of operating and arriving on time over 622 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 BOS to LAS?
February (65% on time); the best was September (83%), 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 BOS

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Live status: FAA delays and ground stops