Route
BWI → LAS
Baltimore/Washington International Thurgood Marshall Airport Harry Reid International Airport
How punctual is this route?
- On-time arrivals
- 79.0%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 60 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,739
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 37%
- Late-arriving aircraft 36%
- Air traffic control & airport 20%
- Extreme weather 5%
- Security 2%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 82.0% | 168 |
| October 2025 | 85.5% | 186 |
| November 2025 | 88.4% | 156 |
| December 2025 | 70.7% | 152 |
| January 2026 | 74.6% | 128 |
| February 2026 | 85.6% | 113 |
| March 2026 | 80.9% | 144 |
| April 2026 | 75.2% | 145 |
| May 2026 | 84.9% | 149 |
| June 2026 | 65.5% | 139 |
| July 2026 | 72.6% | 149 |
| August 2026 | 79.6% | 110 |
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 |
|---|---|---|---|---|
| Southwest Airlines | 1,624 | 78.3% | 1.0% | 60 min |
| NK | 115 | 88.7% | 0.0% | 70 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN667
16% late · 63 flights
-
WN976
51% late · 61 flights
-
WN2330
28% late · 60 flights
-
WN1167
10% late · 58 flights
-
WN1301
26% late · 58 flights
-
WN931
7% late · 58 flights
-
WN934
21% late · 58 flights
-
NK1603
13% late · 55 flights
-
WN4174
13% late · 55 flights
-
WN1171
25% late · 49 flights
-
WN3319
26% late · 46 flights
-
WN977
48% late · 44 flights
-
NK1779
14% late · 42 flights
-
WN2661
5% late · 42 flights
-
WN3368
26% late · 42 flights
-
WN974
11% late · 36 flights
-
WN1087
21% late · 33 flights
-
WN3784
18% late · 33 flights
-
WN889
21% late · 33 flights
-
WN2164
20% late · 31 flights
-
WN321
13% late · 31 flights
-
WN3820
17% late · 30 flights
-
WN1550
35% late · 28 flights
-
WN1688
7% late · 28 flights
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