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.
IND → BWI
Indianapolis to Baltimore: 1,216 nonstop flights a year
On time (12 months)
84%
Cancelled
1.6%
avg delay 11 min
Best time to leave
9 AM to noon
96% on time vs 65% 6 to 9 PM
Most reliable airline
Southwest
83% 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 377
5:45 AM → 7:20 AM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 377 fares Opens this date on Aviasales#2 · Southwest 1925
8:15 AM → 9:55 AM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 98%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 98% 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 1925 fares Opens this date on Aviasales#3 · Southwest 3064
9:35 AM → 11:10 AM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-27. Same departure also flew as Southwest 2445; its record covers all of them.
89%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 92% of the time (24 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 96% on time; 6 to 9 PM: 65%).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find Southwest 3064 fares Opens this date on Aviasales#4 · Southwest 1140
12:30 PM → 2:05 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-29.
87%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 91% of the time (23 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 (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 1140 fares Opens this date on Aviasales#5 · Southwest 3364
8:00 AM → 9:40 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-04-06.
87%
chance on time
- On time (history)
- 91%
- Cancelled
- 3.0%
- Avg arrival delay
- 2 min
- Arrived on time 91% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Short track record (32 flights), so its score leans on the airline's record at this hour.
Limited track record · 32 flights
Find Southwest 3364 fares Opens this date on Aviasales#6 · Southwest 3347
2:00 PM → 3:35 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-04-06.
83%
chance on time
- On time (history)
- 95%
- Cancelled
- 5.0%
- Avg arrival delay
- 4 min
- Arrived on time 95% of the time (19 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 (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find Southwest 3347 fares Opens this date on Aviasales#7 · Southwest 1851
5:25 PM → 7:00 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-04-06.
77%
chance on time
- On time (history)
- 70%
- Cancelled
- 0.0%
- Avg arrival delay
- 42 min
- Arrived on time 70% of the time (20 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 (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find Southwest 1851 fares Opens this date on Aviasales#8 · Southwest 1892
7:05 PM → 8:45 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-30.
75%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 65% on time; 9 AM to noon: 96%).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 1892 fares Opens this date on Aviasales#9 · Southwest 2460
4:35 PM → 6:10 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-29.
75%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 15 min
- Arrived on time 74% of the time (39 flights, Jun 2025 to May 2026).
- Never cancelled in 39 scheduled flights.
- 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 (39 flights), so its score leans on the airline's record at this hour.
Limited track record · 39 flights
Find Southwest 2460 fares Opens this date on Aviasales#10 · Southwest 2459
2:25 PM → 4:00 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
- On time (history)
- 71%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 71% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
- 66% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 31 flights
Find Southwest 2459 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines83%
1,216 flights · 84% on time as flown · 1.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
383 flights · avg delay 3 min
- 9 AM to noon96%
230 flights · avg delay 2 min
- Noon to 3 PM82%
150 flights · avg delay 8 min
- 3 to 6 PM73%
247 flights · avg delay 22 min
- 6 to 9 PM65%
206 flights · avg delay 25 min
Best day: Wednesday (88%). Worst: Sunday (78%).
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