BWI to ORD flight delays & on-time performance
Nonstop flights from Baltimore/Washington International Thurgood Marshall Airport to Chicago O'Hare International Airport · 622 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BWI or ORD 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 Chicago (ORD) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.4% were cancelled, and 9% arrived an hour or more late.
- Republic Airways was the most punctual airline here (83% on time); Frontier Airlines was the least (67%).
- Departures scheduled around 5am did best (90% on time); around 5pm did worst (55%).
- Saturday was the most reliable day to fly (82% on time) and Sunday the least (74%).
- The largest source of delay minutes was late-arriving aircraft (33%).
Which airline is most on time from BWI to ORD?
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 | 89% | 0.0% | 5 min | 2.2% | 93 |
| Spirit Airlines | 89% | 0.0% | 7 min | 5.6% | 18 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 83% | 4.8% | 17 min | 7.1% | 330 |
| Envoy AirRegional airline operating American Eagle flights. | 76% | 3.3% | 20 min | 10.2% | 846 |
| United Airlines | 75% | 1.2% | 24 min | 8.7% | 1,208 |
| Frontier Airlines | 67% | 4.3% | 65 min | 16.5% | 140 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 64% | 0.0% | 24 min | 10.7% | 28 |
| American Airlines | 38% | 0.0% | 51 min | 26.9% | 26 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am90%129 flights
- 6am90%569 flights
- 8am84%73 flights
- 9am77%39 flights
- 10am88%396 flights
- 11am83%303 flights
- 12pm70%60 flights
- 3pm68%79 flights
- 4pm62%40 flights
- 5pm55%372 flights
- 6pm60%295 flights
- 7pm63%167 flights
- 8pm64%107 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday75%3.2% cancelled
- Tuesday76%1.7% cancelled
- Wednesday75%0.8% cancelled
- Thursday76%1.2% cancelled
- Friday75%3.2% cancelled
- Saturday82%2.1% cancelled
- Sunday74%4.3% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft33%
- Air traffic control & airport congestion32%
- Airline (crew, maintenance, cleaning, fueling)19%
- Extreme weather16%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather57%
- Air traffic control & airport congestion37%
- Airline (crew, maintenance, cleaning, fueling)6%
- Security0%
BWI to ORD: common questions
- How often are BWI to ORD flights on time?
- 76% 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 Chicago cancelled?
- 2.4% of scheduled flights were cancelled (65 of 2,689).
- How long are typical delays?
- Across all flights the average arrival delay was 24 min (early arrivals count as zero). Flights that were late arrived 94 min behind schedule on average, and 9.3% of flights were an hour or more late.
- How long is taxi time at BWI?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ORD to BWI — 73% 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 → ORD, nonstop flights by US airlines that report to the DOT. How we calculate this.