Frontier Airlines IAD to SJU on-time performance
Frontier Airlines nonstop flights from Washington to San Juan · Aug 2025 – Jul 2026
On-time arrivals
51%
arrived < 15 min late
Cancelled
1.3%
1 flights
Avg arrival delay
83 min
168 min when late
Rank on route
#2 of 2
route average 76% on time
Key facts
- Frontier Airlines flights on IAD to SJU arrived on time 51% of the time in Aug 2025 – Jul 2026.
- 1.3% were cancelled, and 19% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 76% on time overall.
- The largest source of delay minutes was late-arriving aircraft (63%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft63%
- Air traffic control & airport congestion32%
- Airline (crew, maintenance, cleaning, fueling)5%
- Extreme weather0%
- Security0%
Other airlines on IAD to SJU
- United Airlines79% on time · 12 min avg delay
Full IAD to SJU comparison →
Frontier Airlines on-time record across all routes →
75 Frontier Airlines flights tracked on this route; 1 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.