Route
MCI → SEA
Kansas City International Airport Seattle–Tacoma International Airport
1,490 miles
Return route SEA → MCI →
How punctual is this route?
- On-time arrivals
- 85.0%
- Less than 15 minutes late
- Cancelled
- 1.0%
- Of scheduled flights
- Average delay when late
- 72 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,126
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 45%
- Late-arriving aircraft 30%
- Air traffic control & airport 21%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 84.3% | 111 |
| October 2025 | 78.8% | 88 |
| November 2025 | 84.8% | 79 |
| December 2025 | 66.3% | 85 |
| January 2026 | 80.3% | 68 |
| February 2026 | 90.9% | 56 |
| March 2026 | 88.9% | 74 |
| April 2026 | 89.8% | 90 |
| May 2026 | 90.7% | 109 |
| June 2026 | 90.2% | 123 |
| July 2026 | 90.6% | 127 |
| August 2026 | 81.0% | 116 |
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 | 745 | 84.7% | 0.7% | 70 min |
| Delta Air Lines | 364 | 87.0% | 1.6% | 82 min |
| Southwest Airlines | 17 | 58.8% | 0.0% | 41 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
Reviews
No reviews yet. Be the first to review this route.