Route
SLC → SEA
Salt Lake City International Airport Seattle–Tacoma International Airport
How punctual is this route?
- On-time arrivals
- 79.9%
- Less than 15 minutes late
- Cancelled
- 0.8%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4,098
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 41%
- Late-arriving aircraft 31%
- Air traffic control & airport 22%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 82.1% | 398 |
| October 2025 | 79.6% | 367 |
| November 2025 | 83.4% | 299 |
| December 2025 | 70.7% | 303 |
| January 2026 | 83.9% | 299 |
| February 2026 | 87.3% | 293 |
| March 2026 | 84.3% | 335 |
| April 2026 | 89.2% | 315 |
| May 2026 | 82.8% | 338 |
| June 2026 | 76.8% | 358 |
| July 2026 | 74.1% | 411 |
| August 2026 | 69.0% | 382 |
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 |
|---|---|---|---|---|
| Delta Air Lines | 2,234 | 82.7% | 0.5% | 59 min |
| Alaska Airlines | 1,421 | 77.3% | 1.4% | 53 min |
| SkyWest Airlines | 366 | 75.7% | 0.0% | 94 min |
| Frontier Airlines | 77 | 65.3% | 2.6% | 67 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL2874
7% late · 365 flights
-
DL2995
13% late · 365 flights
-
DL2817
23% late · 363 flights
-
DL871
20% late · 332 flights
-
AS796
16% late · 289 flights
-
DL2921
16% late · 289 flights
-
AS734
34% late · 275 flights
-
DL2998
10% late · 269 flights
-
OO3344
15% late · 154 flights
-
AS719
36% late · 149 flights
-
DL2016
54% late · 117 flights
-
AS653
12% late · 113 flights
-
OO3381
47% late · 103 flights
-
AS664
18% late · 83 flights
-
DL2823
27% late · 83 flights
-
F94987
35% late · 77 flights
-
AS670
17% late · 64 flights
-
AS1444
9% late · 57 flights
-
AS665
47% late · 55 flights
-
AS631
10% late · 51 flights
-
AS678
18% late · 51 flights
-
AS1320
35% late · 37 flights
-
AS1450
25% late · 34 flights
-
AS1126
22% late · 32 flights
Reviews
No reviews yet. Be the first to review this route.