ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe 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.
BWI → ROC
Baltimore to Rochester: 1,105 nonstop flights a year
On time (12 months)
75%
Cancelled
1.7%
avg delay 14 min
Best time to leave
9 AM to noon
85% on time vs 62% after 9 PM
Most reliable airline
Southwest
74% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
6 nonstop. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.
Best overall#1 · Nonstop · 1h 15m
10:40 AM → 11:55 AM
84%
arrive on time
86% on time · 1.3% cancel10:40 AM BWI → 11:55 AM ROC1h 15m
Southwest 1287
Boeing 737 MAX 8 or 737-700 · 2–21 yrs oldFind Southwest 1287 fares Opens this date on Aviasales#2 · Nonstop · 1h 15m
10:30 AM → 11:45 AM
84%
arrive on time
86% on time · 1.4% cancel10:30 AM BWI → 11:45 AM ROC1h 15m
Southwest 3880
Boeing 737 MAX 8 or 737-700 · 3–20 yrs oldFind Southwest 3880 fares Opens this date on Aviasales#3 · Nonstop · 1h 15m
4:00 PM → 5:15 PM
78%
arrive on time
80% on time · 1.4% cancel4:00 PM BWI → 5:15 PM ROC1h 15m
Southwest 568
Boeing 737-700 · 3–23 yrs oldFind Southwest 568 fares Opens this date on Aviasales#4 · Nonstop · 1h 15m
3:20 PM → 4:35 PM
77%
arrive on time
78% on time · 1.3% cancel3:20 PM BWI → 4:35 PM ROC1h 15m
Southwest 2759
Boeing 737-700 · 3–22 yrs oldFind Southwest 2759 fares Opens this date on Aviasales#5 · Nonstop · 1h 20m
9:50 PM → 11:10 PM
58%
arrive on time
59% on time · 1.3% cancel9:50 PM BWI → 11:10 PM ROC1h 20m
Southwest 2758
Boeing 737 MAX 8 · 1–19 yrs oldFind Southwest 2758 fares Opens this date on Aviasales#6 · Nonstop · 1h 20m
10:35 PM → 11:55 PM
53%
arrive on time
53% on time · 1.4% cancel10:35 PM BWI → 11:55 PM ROC1h 20m
Southwest 1730
Boeing 737-800 or 737 MAX 8 · 3–11 yrs oldFind Southwest 1730 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.
- Southwest Airlines74%
1,105 flights · 75% on time as flown · 1.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon85%
366 flights · avg delay 8 min
- Noon to 3 PM80%
141 flights · avg delay 13 min
- 3 to 6 PM74%
231 flights · avg delay 17 min
- 6 to 9 PM68%
88 flights · avg delay 16 min
- After 9 PM62%
279 flights · avg delay 20 min
Best day: Tuesday (76%). Worst: Saturday (70%).
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