Route
SEA → LAS
Seattle–Tacoma International Airport Harry Reid International Airport
How punctual is this route?
- On-time arrivals
- 77.6%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5,620
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 41%
- Late-arriving aircraft 29%
- Air traffic control & airport 26%
- Extreme weather 2%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 75.4% | 440 |
| October 2025 | 76.2% | 487 |
| November 2025 | 79.5% | 445 |
| December 2025 | 73.8% | 468 |
| January 2026 | 82.0% | 460 |
| February 2026 | 82.9% | 415 |
| March 2026 | 76.8% | 478 |
| April 2026 | 84.4% | 476 |
| May 2026 | 78.9% | 497 |
| June 2026 | 80.0% | 476 |
| July 2026 | 73.6% | 492 |
| August 2026 | 68.8% | 486 |
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 |
|---|---|---|---|---|
| Alaska Airlines | 2,612 | 78.7% | 0.8% | 54 min |
| Delta Air Lines | 1,748 | 81.3% | 1.1% | 59 min |
| Southwest Airlines | 977 | 70.3% | 0.5% | 57 min |
| Frontier Airlines | 274 | 68.7% | 2.2% | 132 min |
| SkyWest Airlines | 9 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL2922
9% late · 365 flights
-
DL2905
17% late · 360 flights
-
DL2880
20% late · 358 flights
-
DL2949
21% late · 358 flights
-
AS738
22% late · 324 flights
-
AS478
27% late · 314 flights
-
AS704
16% late · 271 flights
-
AS658
19% late · 254 flights
-
AS551
19% late · 248 flights
-
AS612
15% late · 236 flights
-
AS600
21% late · 211 flights
-
DL2955
28% late · 200 flights
-
AS730
27% late · 163 flights
-
F92408
32% late · 130 flights
-
AS636
28% late · 116 flights
-
AS768
22% late · 100 flights
-
F94830
33% late · 82 flights
-
AS678
33% late · 73 flights
-
F94204
28% late · 62 flights
-
AS1456
45% late · 60 flights
-
WN2650
33% late · 58 flights
-
WN1821
9% late · 55 flights
-
DL945
32% late · 54 flights
-
WN2615
42% late · 50 flights
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