Route on-time record
MSY to BWI: most on-time flights and the best time to fly
New Orleans (Louis Armstrong New Orleans International Airport) to Baltimore (Baltimore/Washington International Thurgood Marshall Airport). 1,201 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 1.5% were cancelled. The most reliable flight number was Southwest 3481 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MSY → BWI
New Orleans to Baltimore: 1,201 nonstop flights a year
On time (12 months)
80%
Cancelled
1.5%
avg delay 13 min
Best time to leave
Before 9 AM
95% on time vs 47% 6 to 9 PM
Most reliable airline
Southwest
79% chance on time
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 3481
6:00 AM → 9:35 AM2h 35m 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: 95% on time; 6 to 9 PM: 47%).
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find Southwest 3481 fares Opens this date on Aviasales#2 · Southwest 646
6:20 AM → 9:45 AM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
87%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 85% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 47%).
- Short track record (33 flights), so its score leans on the airline's record at this hour.
Limited track record · 33 flights
Find Southwest 646 fares Opens this date on Aviasales#3 · Southwest 1409
1:50 PM → 5:20 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 75% of the time (8 flights, Jun 2025 to May 2026).
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 1409 fares Opens this date on Aviasales#4 · Southwest 1960
1:30 PM → 5:00 PM2h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 75% of the time (16 flights, Jun 2025 to May 2026).
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 1960 fares Opens this date on Aviasales#5 · Southwest 2475
4:45 PM → 8:20 PM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-29.
76%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 82% of the time (39 flights, Jun 2025 to May 2026).
- Never cancelled in 39 scheduled flights.
- 55% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (39 flights), so its score leans on the airline's record at this hour.
Limited track record · 39 flights
Find Southwest 2475 fares Opens this date on Aviasales#6 · Southwest 3849
12:15 PM → 3:40 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
71%
chance on time
- On time (history)
- 69%
- Cancelled
- 3.0%
- Avg arrival delay
- 15 min
- Arrived on time 69% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (32 flights), so its score leans on the airline's record at this hour.
Limited track record · 32 flights
Find Southwest 3849 fares Opens this date on Aviasales#7 · Frontier 4582
5:27 PM → 9:05 PM2h 38m nonstop
Local times, typical schedule. Last flown 2026-04-30.
71%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 76% of the time (17 flights, Jun 2025 to May 2026).
- Short track record (17 flights), so its score leans on the route's record at this hour.
Limited track record · 17 flights
Find Frontier 4582 fares Opens this date on Aviasales#8 · Southwest 1837
5:00 PM → 8:25 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
70%
chance on time
- On time (history)
- 68%
- Cancelled
- 3.0%
- Avg arrival delay
- 26 min
- Arrived on time 68% of the time (31 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Short track record (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find Southwest 1837 fares Opens this date on Aviasales#9 · Southwest 2990
3:10 PM → 6:45 PM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-27.
69%
chance on time
- On time (history)
- 63%
- Cancelled
- 0.0%
- Avg arrival delay
- 24 min
- Arrived on time 63% of the time (16 flights, Jun 2025 to May 2026).
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
- 79% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 2990 fares Opens this date on Aviasales#10 · Southwest 4009
12:25 PM → 3:55 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-29.
64%
chance on time
- On time (history)
- 50%
- Cancelled
- 0.0%
- Avg arrival delay
- 15 min
- Arrived on time 50% of the time (22 flights, Jun 2025 to May 2026).
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (22 flights), so its score leans on the airline's record at this hour.
Limited track record · 22 flights
Find Southwest 4009 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines79%
1,033 flights · 80% on time as flown · 1.6% cancel
- Spirit Airlines77%
150 flights · 77% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM95%
388 flights · avg delay 4 min
- 9 AM to noon89%
231 flights · avg delay 7 min
- Noon to 3 PM71%
147 flights · avg delay 12 min
- 3 to 6 PM67%
357 flights · avg delay 24 min
- 6 to 9 PM47%
63 flights · avg delay 28 min
Best day: Tuesday (85%). Worst: Monday (77%).
Smarter routing
Nearby airports that run more on time
MSY → IAD 90% chance on time
Louis Armstrong New Orleans International Airport to Washington Dulles International Airport · 649 flights a year · 45 mi from your airports · yours: 79%
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
- Late-arriving aircraft54%
- Airline (crew, maintenance, boarding)28%
- Air traffic control and airport volume16%
- 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
MSY to BWI questions
- What time of day is best to fly MSY to BWI?
- Before 9 AM: 95% of flights arrived on time, against 47% 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 MSY to BWI?
- Southwest, with a season-adjusted 79% chance of operating and arriving on time over 1,033 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 MSY to BWI?
- June (68% on time); the best was December (87%), 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 MSY
- BWI to MSY (return)
- MSY to ATL 82%
- MSY to IAH 82%
- MSY to DFW 72%
- MSY to ORD 79%
- MSY to MCO 77%
- MSY to DAL 78%
- MSY to HOU 76%
- MSY to DEN 80%
- MSY to AUS 78%
- MSY to DCA 71%
- MSY to CLT 83%
- MSY to MIA 79%
Live status: FAA delays and ground stops