Route on-time record
JFK to SAT: most on-time flights and the best time to fly
New York (John F. Kennedy International Airport) to San Antonio (San Antonio International Airport). 362 nonstop flights in Jun 2025 to May 2026, 90% arrived within 15 minutes and 3.9% were cancelled. The most reliable flight number was Delta 1166 at 8:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
JFK → SAT
New York to San Antonio: 362 nonstop flights a year
On time (12 months)
90%
Cancelled
3.9%
avg delay 13 min
Best time to leave
No clear winner
Most reliable airline
Delta
86% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 1166
8:00 AM → 11:30 AM4h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 91%
- Cancelled
- 4.1%
- Avg arrival delay
- 12 min
- Arrived on time 91% of the time (326 flights, Jun 2025 to May 2026).
- Cancelled 4.1% of the time (14 of 340).
- Departs outside JFK's trouble window (1 PM to 7 PM, when 66% of its 168 ground stops and delay programs started).
Strong track record · 326 flights
Find Delta 1166 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines86%
362 flights · 90% on time as flown · 3.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
326 flights · avg delay 10 min
Best day: Wednesday (87%). Worst: Sunday (78%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)60%
- Air traffic control and airport volume28%
- Late-arriving aircraft9%
- Severe weather3%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
JFK to SAT questions
- Which airline is most on time from JFK to SAT?
- Delta, with a season-adjusted 86% chance of operating and arriving on time over 362 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on JFK to SAT?
- April (76% on time); the best was November (87%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from JFK
- SAT to JFK (return)
- JFK to LAX 78%
- JFK to SFO 75%
- JFK to BOS 73%
- JFK to MCO 73%
- JFK to MIA 76%
- JFK to ATL 76%
- JFK to FLL 72%
- JFK to LAS 80%
- JFK to PHX 78%
- JFK to SEA 68%
- JFK to DCA 67%
- JFK to SAN 79%
Most on-time flights from JFK on every route →
Live status: FAA delays and ground stops