Route
BWI → ORD
Baltimore/Washington International Thurgood Marshall Airport Chicago O'Hare International Airport
How punctual is this route?
- On-time arrivals
- 75.5%
- Less than 15 minutes late
- Cancelled
- 2.5%
- Of scheduled flights
- Average delay when late
- 98 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,677
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 33%
- Late-arriving aircraft 32%
- Airline (crew, maintenance, cleaning) 18%
- Extreme weather 16%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 81.9% | 248 |
| October 2025 | 78.0% | 246 |
| November 2025 | 72.9% | 216 |
| December 2025 | 62.0% | 205 |
| January 2026 | 73.4% | 151 |
| February 2026 | 82.7% | 166 |
| March 2026 | 72.3% | 198 |
| April 2026 | 77.5% | 253 |
| May 2026 | 79.3% | 273 |
| June 2026 | 76.3% | 239 |
| July 2026 | 77.0% | 242 |
| August 2026 | 70.0% | 240 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 1,253 | 74.3% | 1.1% | 90 min |
| Envoy Air | 841 | 76.0% | 3.8% | 88 min |
| Republic Airways | 336 | 83.0% | 4.8% | 103 min |
| Frontier Airlines | 132 | 64.0% | 4.5% | 201 min |
| Southwest Airlines | 62 | 90.3% | 0.0% | 66 min |
| American Airlines | 26 | 38.5% | 0.0% | 84 min |
| SkyWest Airlines | 17 | 76.5% | 0.0% | 30 min |
| NK | 10 | 90.0% | 0.0% | 75 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA590
43% late · 362 flights
-
UA455
14% late · 144 flights
-
MQ3679
30% late · 124 flights
-
UA704
10% late · 93 flights
-
MQ3446
13% late · 76 flights
-
YX4717
32% late · 76 flights
-
F94307
38% late · 75 flights
-
F94063
34% late · 57 flights
-
MQ4251
5% late · 57 flights
-
MQ3684
20% late · 51 flights
-
MQ3804
27% late · 51 flights
-
YX4659
9% late · 48 flights
-
UA2749
15% late · 47 flights
-
UA709
22% late · 46 flights
-
MQ3988
38% late · 45 flights
-
MQ3502
33% late · 44 flights
-
MQ3504
30% late · 44 flights
-
YX4487
12% late · 44 flights
-
YX4693
9% late · 44 flights
-
UA791
50% late · 42 flights
-
UA1316
11% late · 36 flights
-
MQ3849
6% late · 35 flights
-
UA276
41% late · 35 flights
-
UA581
12% late · 35 flights
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