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 → BHM
Baltimore to Birmingham: 345 nonstop flights a year
On time (12 months)
81%
Cancelled
1.2%
avg delay 12 min
Best time to leave
Before 9 AM
90% on time vs 72% noon to 3 PM
Most reliable airline
Southwest
80% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
4 nonstop, 40 with 1 connection. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.
Best overall#1 · Nonstop · 2h 10m
10:55 AM → 12:05 PM
85%
arrive on time
86% on time · 1.1% cancel10:55 AM BWI → 12:05 PM BHM2h 10m
Southwest 3492
Boeing 737-700 · 18–23 yrs oldFind Southwest 3492 fares Opens this date on Aviasales#2 · Nonstop · 2h 00m
11:30 AM → 12:30 PM
81%
arrive on time
82% on time · 1.1% cancel11:30 AM BWI → 12:30 PM BHM2h 00m
Southwest 3881
Boeing 737-800 or 737 MAX 8 · 2–18 yrs oldFind Southwest 3881 fares Opens this date on Aviasales#3 · Nonstop · 2h 05m
10:20 AM → 11:25 AM
82%
arrive on time
82% on time · 0.9% cancel10:20 AM BWI → 11:25 AM BHM2h 05m
Southwest 500
Boeing 737-700 · 16–23 yrs oldFind Southwest 500 fares Opens this date on Aviasales#4 · Nonstop · 2h 10m
2:10 PM → 3:20 PM
74%
arrive on time
75% on time · 1.1% cancel2:10 PM BWI → 3:20 PM BHM2h 10m
Southwest 2925
Boeing 737 MAX 8 or 737-800 · 1–13 yrs oldFind Southwest 2925 fares Opens this date on Aviasales#5 · 1 connection · 6h 54m · one ticket (American)
6:12 AM → 12:06 PM
96%
connections made
90%
arrive on time
91% on time · 2.0% cancel6:12 AM BWI → 7:49 AM CLT1h 37m
American 2670
Boeing 737-800 · 9–26 yrs oldConnect in CLT · 3h 36m · 99% chance to make it · same ticket: the airline rebooks you if you miss it94% on time · 1.3% cancel11:25 AM CLT → 12:06 PM BHM1h 41m
SkyWest 4932 · sold as American Eagle
Bombardier CRJ700 · 15–22 yrs oldFind this American trip Look for American 2670 + SkyWest 4932 on Aviasales#6 · 1 connection · 6h 20m · one ticket (American)
6:46 AM → 12:06 PM
94%
connections made
88%
arrive on time
89% on time · 2.0% cancel6:46 AM BWI → 8:25 AM CLT1h 39m
American 1588
Boeing 737-800 · 11–27 yrs oldConnect in CLT · 3h 00m · 97% chance to make it · same ticket: the airline rebooks you if you miss it94% on time · 1.3% cancel11:25 AM CLT → 12:06 PM BHM1h 41m
SkyWest 4932 · sold as American Eagle
Bombardier CRJ700 · 15–22 yrs oldFind this American trip Look for American 1588 + SkyWest 4932 on Aviasales#7 · 1 connection · 5h 35m · one ticket (Southwest)
6:15 AM → 10:50 AM
97%
connections made
86%
arrive on time
89% on time · 1.2% cancel6:15 AM BWI → 7:10 AM BNA1h 55m
Southwest 2659 · also flew as 2652
Boeing 737 MAX 8 or 737-800 · 1–20 yrs oldConnect in BNA · 2h 35m · 98% chance to make it · same ticket: the airline rebooks you if you miss it88% on time · 0.6% cancel9:45 AM BNA → 10:50 AM BHM1h 05m
Southwest 1157 · also flew as 3110
Boeing 737-700 · 10–23 yrs oldFind this Southwest trip Look for Southwest 2659 + Southwest 1157 on Aviasales#8 · 1 connection · 4h 49m · one ticket (Delta)
6:00 AM → 10:01 AM
92%
connections made
82%
arrive on time
93% on time · 2.8% cancel6:00 AM BWI → 8:08 AM ATL2h 01m
Delta 2950
Airbus A321 · 8–10 yrs oldConnect in ATL · 1h 52m · 98% chance to make it · same ticket: the airline rebooks you if you miss it89% on time · 3.2% cancel10:00 AM ATL → 10:01 AM BHM56m
Delta 3164
Boeing 717 · 16–27 yrs oldFind this Delta trip Look for Delta 2950 + Delta 3164 on Aviasales#9 · 1 connection · 5h 14m · one ticket (Delta)
7:28 AM → 11:49 AM
95%
connections made
83%
arrive on time
89% on time · 1.7% cancel7:28 AM BWI → 9:35 AM ATL2h 00m
Delta 2579
Boeing 737-900ER or Airbus A321 · 8–12 yrs oldConnect in ATL · 2h 21m · 98% chance to make it · same ticket: the airline rebooks you if you miss it87% on time · 1.2% cancel11:56 AM ATL → 11:49 AM BHM53m
Delta 3012
Boeing 717 · 21–27 yrs oldFind this Delta trip Look for Delta 2579 + Delta 3012 on Aviasales#10 · 1 connection · 8h 01m · one ticket (American)
5:05 AM → 12:06 PM
96%
connections made
90%
arrive on time
95% on time · 2.2% cancel5:05 AM BWI → 6:36 AM CLT1h 31m
American 1708 · also flew as 2224
Boeing 737-800 or Airbus A319 · 8–27 yrs oldConnect in CLT · 4h 49m · 99% chance to make it · same ticket: the airline rebooks you if you miss it94% on time · 1.3% cancel11:25 AM CLT → 12:06 PM BHM1h 41m
SkyWest 4932 · sold as American Eagle
Bombardier CRJ700 · 15–22 yrs oldFind this American trip Look for American 1708 + SkyWest 4932 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 Airlines80%
345 flights · 81% on time as flown · 1.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM90%
30 flights · avg delay 3 min
- 9 AM to noon88%
169 flights · avg delay 8 min
- Noon to 3 PM72%
118 flights · avg delay 18 min
Best day: Wednesday (84%). 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