Route
RDU → ORD
Raleigh-Durham International Airport Chicago O'Hare International Airport
How punctual is this route?
- On-time arrivals
- 74.3%
- Less than 15 minutes late
- Cancelled
- 2.8%
- Of scheduled flights
- Average delay when late
- 104 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,740
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 35%
- Late-arriving aircraft 33%
- Airline (crew, maintenance, cleaning) 24%
- Extreme weather 8%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 82.7% | 266 |
| October 2025 | 71.2% | 327 |
| November 2025 | 75.1% | 309 |
| December 2025 | 71.8% | 290 |
| January 2026 | 76.1% | 233 |
| February 2026 | 78.8% | 244 |
| March 2026 | 69.1% | 316 |
| April 2026 | 70.7% | 354 |
| May 2026 | 81.0% | 374 |
| June 2026 | 76.1% | 327 |
| July 2026 | 69.2% | 341 |
| August 2026 | 71.8% | 359 |
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 | 1,292 | 75.1% | 1.7% | 99 min |
| Republic Airways | 1,155 | 71.6% | 4.0% | 83 min |
| Envoy Air | 521 | 73.0% | 1.9% | 90 min |
| American Airlines | 518 | 80.6% | 3.3% | 155 min |
| SkyWest Airlines | 154 | 81.1% | 3.2% | 203 min |
| Frontier Airlines | 98 | 58.1% | 5.1% | 156 min |
| OH | 2 | 50.0% | 0.0% | 31 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1920
21% late · 253 flights
-
AA2849
16% late · 179 flights
-
YX4563
40% late · 152 flights
-
UA1448
16% late · 148 flights
-
MQ3597
50% late · 135 flights
-
UA2638
11% late · 135 flights
-
UA630
57% late · 134 flights
-
YX4652
33% late · 105 flights
-
UA1803
8% late · 101 flights
-
YX4583
31% late · 93 flights
-
F93351
40% late · 92 flights
-
AA2123
16% late · 89 flights
-
UA247
8% late · 87 flights
-
UA2485
46% late · 83 flights
-
OO5732
16% late · 79 flights
-
YX4756
19% late · 76 flights
-
AA557
33% late · 71 flights
-
YX4492
43% late · 71 flights
-
YX4408
20% late · 61 flights
-
AA1587
13% late · 56 flights
-
YX4402
46% late · 54 flights
-
YX3595
25% late · 53 flights
-
YX4633
13% late · 49 flights
-
OO5465
17% late · 47 flights
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