Route
LAS → ORD
Harry Reid International Airport Chicago O'Hare International Airport
How punctual is this route?
- On-time arrivals
- 75.6%
- Less than 15 minutes late
- Cancelled
- 1.2%
- Of scheduled flights
- Average delay when late
- 92 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5,148
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 41%
- Airline (crew, maintenance, cleaning) 30%
- Air traffic control & airport 28%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 77.6% | 481 |
| October 2025 | 78.0% | 482 |
| November 2025 | 74.1% | 390 |
| December 2025 | 76.1% | 359 |
| January 2026 | 78.7% | 356 |
| February 2026 | 84.3% | 394 |
| March 2026 | 71.1% | 489 |
| April 2026 | 75.9% | 504 |
| May 2026 | 79.0% | 483 |
| June 2026 | 75.3% | 395 |
| July 2026 | 73.0% | 419 |
| August 2026 | 63.7% | 396 |
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 | 2,354 | 78.2% | 0.3% | 80 min |
| American Airlines | 1,894 | 75.2% | 2.2% | 117 min |
| Southwest Airlines | 551 | 67.1% | 0.2% | 64 min |
| Frontier Airlines | 213 | 65.8% | 4.7% | 93 min |
| NK | 136 | 84.8% | 2.9% | 74 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA664
14% late · 352 flights
-
UA2102
9% late · 345 flights
-
AA2258
12% late · 328 flights
-
UA1583
20% late · 310 flights
-
UA706
35% late · 309 flights
-
F92146
32% late · 189 flights
-
UA314
34% late · 156 flights
-
AA3323
24% late · 117 flights
-
UA2320
32% late · 102 flights
-
AA2949
23% late · 95 flights
-
AA3312
21% late · 95 flights
-
UA1672
27% late · 87 flights
-
AA2013
40% late · 76 flights
-
AA2847
25% late · 76 flights
-
AA3039
24% late · 76 flights
-
AA2040
32% late · 74 flights
-
AA2447
39% late · 74 flights
-
UA1335
14% late · 74 flights
-
UA1259
11% late · 71 flights
-
AA2020
9% late · 65 flights
-
WN4203
19% late · 58 flights
-
WN4646
26% late · 58 flights
-
AA3077
14% late · 56 flights
-
WN2953
44% late · 56 flights
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