Route on-time record
ROC to BWI: most on-time flights and the best time to fly
Rochester (Frederick Douglass Greater Rochester International Airport) to Baltimore (Baltimore/Washington International Thurgood Marshall Airport). 1,104 nonstop flights in Jun 2025 to May 2026, 83% arrived within 15 minutes and 1.4% were cancelled. The most reliable flight number was Southwest 4028 at 6:05 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
ROC → BWI
Rochester to Baltimore: 1,104 nonstop flights a year
On time (12 months)
83%
Cancelled
1.4%
avg delay 14 min
Best time to leave
Before 9 AM
93% on time vs 76% 3 to 6 PM
Most reliable airline
Southwest
81% chance on time
Lowest nonstop fare seen in the next two months: $404 (Southwest 2246 on 2026-10-26). 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 · Southwest 4028
6:05 AM → 7:20 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
95%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 3 to 6 PM: 76%).
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find Southwest 4028 fares Opens this date on Aviasales#2 · Southwest 1551
5:55 AM → 7:20 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
86%
chance on time
- On time (history)
- 88%
- Cancelled
- 3.0%
- Avg arrival delay
- 13 min
- Arrived on time 88% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 3 to 6 PM: 76%).
- Short track record (32 flights), so its score leans on the airline's record at this hour.
Limited track record · 32 flights
Find Southwest 1551 fares Opens this date on Aviasales#3 · Southwest 1799
12:25 PM → 1:45 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
83%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 91% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Short track record (33 flights), so its score leans on the airline's record at this hour.
Limited track record · 33 flights
Find Southwest 1799 fares Opens this date on Aviasales#4 · Southwest 1711
4:00 PM → 5:20 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 89% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's least on-time window (3 to 6 PM: 76% on time; Before 9 AM: 93%).
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 55 flights
Find Southwest 1711 fares Opens this date on Aviasales#5 · Southwest 4029
12:35 PM → 1:50 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 80% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Short track record (54 flights), so its score leans on the airline's record at this hour.
Limited track record · 54 flights
Find Southwest 4029 fares Opens this date on Aviasales#6 · Southwest 2392
5:50 PM → 7:10 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
72%
chance on time
- On time (history)
- 69%
- Cancelled
- 0.0%
- Avg arrival delay
- 29 min
- Arrived on time 69% of the time (32 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Leaves in this route's least on-time window (3 to 6 PM: 76% on time; Before 9 AM: 93%).
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 32 flights
Find Southwest 2392 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines81%
1,104 flights · 83% on time as flown · 1.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
370 flights · avg delay 7 min
- 9 AM to noon91%
57 flights · avg delay 7 min
- Noon to 3 PM77%
313 flights · avg delay 15 min
- 3 to 6 PM76%
334 flights · avg delay 19 min
Smarter routing
Nearby airports that run more on time
BUF → BWI 85% chance on time
Buffalo Niagara International Airport to Baltimore/Washington International Thurgood Marshall Airport · 1,732 flights a year · 55 mi from your airports · yours: 81%
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.
What delays this route
- Airline (crew, maintenance, boarding)39%
- Late-arriving aircraft39%
- Air traffic control and airport volume20%
- Severe weather2%
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
ROC to BWI questions
- What time of day is best to fly ROC to BWI?
- Before 9 AM: 93% of flights arrived on time, against 76% 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 ROC to BWI?
- Southwest, with a season-adjusted 81% chance of operating and arriving on time over 1,104 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 ROC to BWI?
- July (73% on time); the best was November (91%), 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 ROC
- BWI to ROC (return)
- ROC to ORD 74%
- ROC to DCA 68%
- ROC to ATL 80%
- ROC to CLT 81%
- ROC to JFK 82%
- ROC to EWR 81%
- ROC to MCO 68%
- ROC to DTW 78%
- ROC to MDW 82%
Live status: FAA delays and ground stops