Frontier Airlines SLC to SEA on-time performance
Frontier Airlines nonstop flights from Salt Lake City to Seattle · Aug 2025 – Jul 2026
On-time arrivals
68%
arrived < 15 min late
Cancelled
3.3%
3 flights
Avg arrival delay
21 min
61 min when late
Rank on route
#4 of 4
route average 80% on time
Key facts
- Frontier Airlines flights on SLC to SEA arrived on time 68% of the time in Aug 2025 – Jul 2026.
- 3.3% were cancelled, and 11% arrived an hour or more late.
- That ranks #4 of 4 airlines on this route, which averaged 80% on time overall.
- The largest source of delay minutes was late-arriving aircraft (49%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft49%
- Air traffic control & airport congestion31%
- Airline (crew, maintenance, cleaning, fueling)21%
- Extreme weather0%
- Security0%
Other airlines on SLC to SEA
- Delta Air Lines83% on time · 10 min avg delay
- Alaska Airlines77% on time · 12 min avg delay
- SkyWest Airlines77% on time · 18 min avg delay
Full SLC to SEA comparison →
Frontier Airlines on-time record across all routes →
90 Frontier Airlines flights tracked on this route; 3 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.