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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.

BUF → DTW

Buffalo to Detroit: 1,006 nonstop flights a year

On time (12 months)

81%

Cancelled

1.7%

avg delay 21 min

Best time to leave

Before 9 AM

85% on time vs 76% 3 to 6 PM

Most reliable airline

Delta

83% chance on time

Check BUF to DTW fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Best trips

8 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 14m

    6:15 AM → 7:35 AM

    88%

    arrive on time

    6:15 AM BUF → 7:35 AM DTW1h 14m

    Delta 2898

    Airbus A319 or A320 · 23–34 yrs old
    89% on time · 0.5% cancel
    Find Delta 2898 fares Opens this date on Aviasales

  2. #2 · Nonstop · 1h 16m

    3:52 PM → 5:08 PM

    85%

    arrive on time

    3:52 PM BUF → 5:08 PM DTW1h 16m

    SkyWest 4021 · sold as United Express, Delta Connection, American Eagle or Alaska · also flew as 3955

    Bombardier CRJ900 · 5–20 yrs old
    86% on time · 1.2% cancel
    Find 3:52 PM flight fares Opens this date on Aviasales

  3. #3 · Nonstop · 1h 09m

    12:50 PM → 1:59 PM

    82%

    arrive on time

    12:50 PM BUF → 1:59 PM DTW1h 09m

    Delta 2139

    Boeing 717 · 24–26 yrs old
    84% on time · 2.0% cancel
    Find Delta 2139 fares Opens this date on Aviasales

  4. #4 · Nonstop · 1h 18m

    8:56 AM → 10:14 AM

    82%

    arrive on time

    8:56 AM BUF → 10:14 AM DTW1h 18m

    SkyWest 3949 · sold as United Express, Delta Connection, American Eagle or Alaska

    Bombardier CRJ900 · 7–20 yrs old
    83% on time · 1.5% cancel
    Find 8:56 AM flight fares Opens this date on Aviasales

  5. #5 · Nonstop · 1h 14m

    7:31 PM → 8:45 PM

    78%

    arrive on time

    7:31 PM BUF → 8:45 PM DTW1h 14m

    SkyWest 3969 · sold as United Express, Delta Connection, American Eagle or Alaska · also flew as 3947

    Bombardier CRJ900 · 5–20 yrs old
    79% on time · 1.2% cancel
    Find 7:31 PM flight fares Opens this date on Aviasales

  6. #6 · Nonstop · 1h 13m

    10:32 AM → 11:45 AM

    77%

    arrive on time

    10:32 AM BUF → 11:45 AM DTW1h 13m

    SkyWest 3998 · sold as United Express, Delta Connection, American Eagle or Alaska

    Bombardier CRJ900 · 7–20 yrs old
    78% on time · 1.4% cancel
    Find 10:32 AM flight fares Opens this date on Aviasales

  7. #7 · Nonstop · 1h 16m

    1:00 PM → 2:16 PM

    70%

    arrive on time

    1:00 PM BUF → 2:16 PM DTW1h 16m

    SkyWest 3983 · sold as United Express, Delta Connection, American Eagle or Alaska

    Bombardier CRJ900 · 7–20 yrs old
    71% on time · 1.9% cancel
    Find 1:00 PM flight fares Opens this date on Aviasales

  8. #8 · Nonstop · 1h 16m

    5:50 PM → 7:06 PM

    68%

    arrive on time

    5:50 PM BUF → 7:06 PM DTW1h 16m

    SkyWest 3982 · sold as United Express, Delta Connection, American Eagle or Alaska

    Bombardier CRJ900 · 7–20 yrs old
    69% on time · 1.3% cancel
    Find 5:50 PM 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 Lines83%

    453 flights · 84% on time as flown · 1.6% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)77%

    546 flights · 79% on time as flown · 1.7% cancel

On time by departure time

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

  • Before 9 AM85%

    386 flights · avg delay 18 min

  • 9 AM to noon81%

    126 flights · avg delay 24 min

  • Noon to 3 PM80%

    171 flights · avg delay 20 min

  • 3 to 6 PM76%

    232 flights · avg delay 29 min

  • 6 to 9 PM83%

    91 flights · avg delay 14 min

Best day: Saturday (86%). Worst: Sunday (80%).

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