ORD to BWI flight delays & on-time performance
Nonstop flights from Chicago O'Hare International Airport to Baltimore/Washington International Thurgood Marshall Airport · 622 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ORD or BWI right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Chicago (ORD) to Baltimore (BWI) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.6% were cancelled, and 10% arrived an hour or more late.
- Envoy Air was the most punctual airline here (78% on time); Frontier Airlines was the least (66%).
- Departures scheduled around 6am did best (91% on time); around 6pm did worst (59%).
- Saturday was the most reliable day to fly (78% on time) and Wednesday the least (68%).
- The largest source of delay minutes was late-arriving aircraft (46%).
Which airline is most on time from ORD to BWI?
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 |
|---|---|---|---|---|---|
| Spirit Airlines | 89% | 0.0% | 5 min | 5.6% | 18 |
| Envoy AirRegional airline operating American Eagle flights. | 78% | 3.3% | 15 min | 8.0% | 845 |
| Southwest Airlines | 71% | 0.0% | 28 min | 8.6% | 93 |
| United Airlines | 71% | 1.4% | 20 min | 9.9% | 1,211 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 70% | 0.0% | 20 min | 14.8% | 27 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 70% | 5.7% | 26 min | 14.8% | 331 |
| Frontier Airlines | 66% | 4.3% | 29 min | 13.4% | 140 |
| American Airlines | 58% | 0.0% | 41 min | 26.9% | 26 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am91%199 flights
- 7am87%188 flights
- 8am87%201 flights
- 9am66%29 flights
- 10am83%146 flights
- 11am70%172 flights
- 12pm67%40 flights
- 1pm72%171 flights
- 2pm71%376 flights
- 3pm76%95 flights
- 4pm66%193 flights
- 6pm59%436 flights
- 7pm75%46 flights
- 8pm69%219 flights
- 9pm62%167 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday70%1.7% cancelled
- Tuesday75%2.2% cancelled
- Wednesday68%0.6% cancelled
- Thursday75%2.7% cancelled
- Friday70%1.9% cancelled
- Saturday78%3.6% cancelled
- Sunday73%5.3% 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 aircraft46%
- Air traffic control & airport congestion22%
- Airline (crew, maintenance, cleaning, fueling)21%
- Extreme weather10%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather57%
- Air traffic control & airport congestion39%
- Airline (crew, maintenance, cleaning, fueling)4%
- Security0%
ORD to BWI: common questions
- How often are ORD to BWI flights on time?
- 73% 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 Chicago to Baltimore cancelled?
- 2.6% of scheduled flights were cancelled (70 of 2,691).
- How long are typical delays?
- Across all flights the average arrival delay was 20 min (early arrivals count as zero). Flights that were late arrived 68 min behind schedule on average, and 10.2% of flights were an hour or more late.
- How long is taxi time at ORD?
- Flights on this route spent 28 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BWI to ORD — 76% on time
More flights from Chicago
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ORD → BWI, nonstop flights by US airlines that report to the DOT. How we calculate this.