Route on-time record
SNA to ATL: most on-time flights and the best time to fly
Santa Ana (John Wayne Orange County International Airport) to Atlanta (Hartsfield Jackson Atlanta International Airport). 1,063 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was Delta 1521 at 9:20 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SNA → ATL
Santa Ana to Atlanta: 1,063 nonstop flights a year
On time (12 months)
80%
Cancelled
0.9%
avg delay 23 min
Best time to leave
After 9 PM
93% on time vs 69% 9 AM to noon
Most reliable airline
Delta
80% 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 1521
9:20 PM → 4:28 AM4h 08m nonstop
Local times, typical schedule. Last flown 2026-05-04. Same departure also flew as Delta 826; its record covers all of them.
91%
chance on time
- On time (history)
- 94%
- Cancelled
- 1.5%
- Avg arrival delay
- 29 min
- Arrived on time 94% of the time (65 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (After 9 PM: 93% on time; 9 AM to noon: 69%).
Moderate track record · 65 flights
Find Delta 1521 fares Opens this date on Aviasales#2 · Delta 721
6:45 AM → 1:55 PM4h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.8%
- Avg arrival delay
- 19 min
- Arrived on time 82% of the time (361 flights, Jun 2025 to May 2026).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 361 flights
Find Delta 721 fares Opens this date on Aviasales#3 · Delta 2012
2:00 PM → 9:22 PM4h 22m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.0%
- Avg arrival delay
- 56 min
- Arrived on time 76% of the time (25 flights, Jun 2025 to May 2026).
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find Delta 2012 fares Opens this date on Aviasales#4 · Delta 327
11:54 AM → 7:05 PM4h 11m nonstop
Local times, typical schedule. Last flown 2026-05-06. Same departure also flew as Delta 1020; its record covers all of them.
75%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 21 min
- Arrived on time 77% of the time (52 flights, Jun 2025 to May 2026).
- Never cancelled in 52 scheduled flights.
- Leaves in this route's least on-time window (9 AM to noon: 69% on time; After 9 PM: 93%).
- Short track record (52 flights), so its score leans on the airline's record at this hour.
Limited track record · 52 flights
Find Delta 327 fares Opens this date on Aviasales#5 · Delta 329
12:25 PM → 7:41 PM4h 16m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 75% of the time (204 flights, Jun 2025 to May 2026).
- Never cancelled in 207 scheduled flights.
Strong track record · 204 flights
Find Delta 329 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines80%
1,063 flights · 80% on time as flown · 0.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM82%
365 flights · avg delay 19 min
- 9 AM to noon69%
113 flights · avg delay 27 min
- Noon to 3 PM77%
406 flights · avg delay 20 min
- After 9 PM93%
179 flights · avg delay 40 min
Best day: Monday (86%). Worst: Sunday (77%).
Smarter routing
Nearby airports that run more on time
ONT → ATL 88% chance on time
Ontario International Airport to Hartsfield Jackson Atlanta International Airport · 941 flights a year · 30 mi from your airports · yours: 80%
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)65%
- Late-arriving aircraft23%
- Air traffic control and airport volume11%
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
SNA to ATL questions
- What time of day is best to fly SNA to ATL?
- After 9 PM: 93% of flights arrived on time, against 69% for departures 9 AM to noon.
- Which airline is most on time from SNA to ATL?
- Delta, with a season-adjusted 80% chance of operating and arriving on time over 1,063 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 SNA to ATL?
- July (73% on time); the best was November (89%), 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 SNA
- ATL to SNA (return)
- SNA to SFO 74%
- SNA to PHX 82%
- SNA to LAS 83%
- SNA to SEA 85%
- SNA to DEN 82%
- SNA to DFW 79%
- SNA to SJC 87%
- SNA to OAK 85%
- SNA to SMF 85%
- SNA to ORD 77%
- SNA to SLC 87%
- SNA to PDX 93%
Live status: FAA delays and ground stops