BWI to BHM flight delays & on-time performance
Nonstop flights from Baltimore/Washington International Thurgood Marshall Airport to Birmingham-Shuttlesworth International Airport · 682 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BWI or BHM right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Baltimore (BWI) to Birmingham (BHM) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.9% were cancelled, and 4% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 9am did best (92% on time); around 1pm did worst (65%).
- Wednesday was the most reliable day to fly (94% on time) and Sunday the least (72%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (62%).
Which airline is most on time from BWI to BHM?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Southwest Airlines | 81% | 0.9% | 10 min | 3.6% | 336 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am91%22 flights
- 9am92%49 flights
- 10am91%81 flights
- 11am83%25 flights
- 1pm65%34 flights
- 2pm67%55 flights
- 3pm81%37 flights
- 4pm71%18 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%1.9% cancelled
- Tuesday84%1.9% cancelled
- Wednesday94%0.0% cancelled
- Thursday73%0.0% cancelled
- Friday87%0.0% cancelled
- Saturday80%0.0% cancelled
- Sunday72%1.8% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)62%
- Late-arriving aircraft23%
- Air traffic control & airport congestion9%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather67%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion0%
- Security0%
BWI to BHM: common questions
- How often are BWI to BHM flights on time?
- 81% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Baltimore to Birmingham cancelled?
- 0.9% of scheduled flights were cancelled (3 of 336).
- How long are typical delays?
- Across all flights the average arrival delay was 10 min (early arrivals count as zero). Flights that were late arrived 49 min behind schedule on average, and 3.6% of flights were an hour or more late.
- How long is taxi time at BWI?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BHM to BWI — 81% on time
More flights from Baltimore
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BWI → BHM, nonstop flights by US airlines that report to the DOT. How we calculate this.