Route Reliability
Kalispell → San Francisco
FCA–SFO · 844 miles · Glacier Park International Airport to San Francisco International Airport
- 78%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 1.1%
- Cancelled
- 262
- Flights in the data
Data through May 2026.
United Airlines is the only airline in this data on this route, arriving on time 78% of the time across 262 flights. No comparison to make.
What the data says
The 3–6 PM departure wins.
FCA–SFO flights departing between 3–6 PM arrived on time 83% of the time, versus 65% between 6–9 AM.
Sunday scaries are real for this one.
FCA–SFO flights arrived on time 86% of the time on Thursdays and just 66% on Sundays. That gap is worth planning around.
Recent months have been rougher.
FCA–SFO flights arrived on time 55% of the time over the last three months in the data, compared with 74% in the three months before that.
Flights on this route
The breakdown
- Mon78%(36 flights)
- Tue79%(24 flights)
- Wed83%(24 flights)
- Thu86%(36 flights)
- Fri79%(38 flights)
- Sat82%(51 flights)
- Sun66%(50 flights)
- 6–9 AM65%(26 flights)
- 12–3 PM74%(76 flights)
- 3–6 PM83%(157 flights)
Jun 91% → May 20% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 91% | 32 |
| July 2025 | 77% | 39 |
| August 2025 | 88% | 41 |
| September 2025 | 83% | 36 |
| October 2025 | 80% | 25 |
| December 2025 | 57% | 14 |
| January 2026 | 86% | 21 |
| February 2026 | 85% | 20 |
| March 2026 | 60% | 20 |
| May 2026 | 20% | 10 |
Same trip, other airports
Keep nerding
Based on 262 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.