Route on-time record

ATL to AUS: most on-time flights and the best time to fly

Atlanta (Hartsfield Jackson Atlanta International Airport) to Austin (Austin Bergstrom International Airport). 4,566 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 1.5% were cancelled. The most reliable flight number was Southwest 2629 at 6:15 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

ATL → AUS

Atlanta to Austin: 4,566 nonstop flights a year

On time (12 months)

78%

Cancelled

1.5%

avg delay 13 min

Best time to leave

Before 9 AM

92% on time vs 68% 3 to 6 PM

Most reliable airline

Southwest

80% chance on time

Check ATL to AUS fares

Lowest nonstop fare seen in the next two months: $213 (Frontier 4211 on 2026-11-03). 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 · Southwest 2629
6:15 AM → 7:45 AM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 234; its record covers all of them.
91%
chance on time
On time (history)
95%
Cancelled
2.3%
Avg arrival delay
6 min
- Arrived on time 95% of the time (86 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 3 to 6 PM: 68%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Moderate track record · 86 flights
Find Southwest 2629 fares Opens this date on Aviasales
#2 · Delta 2976
8:05 AM → 9:45 AM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
On time (history)
93%
Cancelled
3.0%
Avg arrival delay
3 min
- Arrived on time 93% of the time (352 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (11 of 364).
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 3 to 6 PM: 68%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Strong track record · 352 flights
Find Delta 2976 fares Opens this date on Aviasales
#3 · Southwest 3391
11:30 AM → 1:00 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-27.
89%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
5 min
- Arrived on time 94% of the time (16 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 3391 fares Opens this date on Aviasales
#4 · Delta 2011
10:40 AM → 12:18 PM2h 34m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
On time (history)
90%
Cancelled
1.1%
Avg arrival delay
7 min
- Arrived on time 90% of the time (278 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Strong track record · 278 flights
Find Delta 2011 fares Opens this date on Aviasales
#5 · Delta 1722
12:50 PM → 2:39 PM2h 49m nonstop
Local times, typical schedule. Last flown 2026-04-12.
85%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 94% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Limited track record · 31 flights
Find Delta 1722 fares Opens this date on Aviasales
#6 · Southwest 1281
10:55 AM → 12:25 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-29.
85%
chance on time
On time (history)
87%
Cancelled
0.0%
Avg arrival delay
9 min
- Arrived on time 87% of the time (23 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 1281 fares Opens this date on Aviasales
#7 · Delta 2886
9:22 AM → 10:55 AM2h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
On time (history)
87%
Cancelled
1.4%
Avg arrival delay
7 min
- Arrived on time 87% of the time (358 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Strong track record · 358 flights
Find Delta 2886 fares Opens this date on Aviasales
#8 · Delta 2104
12:15 PM → 1:43 PM2h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
On time (history)
83%
Cancelled
1.5%
Avg arrival delay
9 min
- Arrived on time 83% of the time (323 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Strong track record · 323 flights
Find Delta 2104 fares Opens this date on Aviasales
#9 · Delta 1335
10:40 PM → 12:20 AM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
On time (history)
87%
Cancelled
2.4%
Avg arrival delay
8 min
- Arrived on time 87% of the time (165 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Moderate track record · 165 flights
Find Delta 1335 fares Opens this date on Aviasales
#10 · Southwest 1777
12:00 PM → 1:40 PM2h 40m nonstop
Local times, typical schedule. Last flown 2026-04-06.
77%
chance on time
On time (history)
76%
Cancelled
0.0%
Avg arrival delay
11 min
- Arrived on time 76% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Limited track record · 33 flights
Find Southwest 1777 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Southwest Airlines80%
1,036 flights · 81% on time as flown · 0.7% cancel
Delta Air Lines78%
3,264 flights · 79% on time as flown · 1.6% cancel
Frontier Airlines65%
265 flights · 65% on time as flown · 3.0% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM92%
550 flights · avg delay 4 min
9 AM to noon88%
937 flights · avg delay 7 min
Noon to 3 PM80%
1,022 flights · avg delay 12 min
3 to 6 PM68%
1,052 flights · avg delay 19 min
6 to 9 PM70%
537 flights · avg delay 19 min
After 9 PM70%
468 flights · avg delay 22 min

Best day: Wednesday (84%). Worst: Sunday (71%).

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)40%
Late-arriving aircraft33%
Air traffic control and airport volume23%
Severe weather4%

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

ATL to AUS questions

What time of day is best to fly ATL to AUS?: Before 9 AM: 92% of flights arrived on time, against 68% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from ATL to AUS?: Southwest, with a season-adjusted 80% chance of operating and arriving on time over 1,036 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 ATL to AUS?: July (62% on time); the best was February (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.

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