Route on-time record

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

Austin (Austin Bergstrom International Airport) to Chicago (Chicago O'Hare International Airport). 3,169 nonstop flights in Jun 2025 to May 2026, 73% arrived within 15 minutes and 2.1% were cancelled. The most reliable flight number was United 1905 at 8:45 AM.

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

AUS → ORD

Austin to Chicago: 3,169 nonstop flights a year

On time (12 months)

73%

Cancelled

2.1%

avg delay 25 min

Best time to leave

Before 9 AM

84% on time vs 54% 6 to 9 PM

Most reliable airline

United

74% chance on time

Check AUS to ORD fares

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 · United 1905
8:45 AM → 11:42 AM2h 57m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 1672; its record covers all of them.
88%
chance on time
On time (history)
96%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 96% of the time (25 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 54%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find United 1905 fares Opens this date on Aviasales
#2 · United 1878
7:00 AM → 9:50 AM2h 50m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
On time (history)
87%
Cancelled
1.6%
Avg arrival delay
10 min
- Arrived on time 87% of the time (299 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 54%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
Strong track record · 299 flights
Find United 1878 fares Opens this date on Aviasales
#3 · United 2133
9:50 AM → 12:40 PM2h 50m nonstop
Local times, typical schedule. Last flown 2026-04-29.
82%
chance on time
On time (history)
83%
Cancelled
0.9%
Avg arrival delay
17 min
- Arrived on time 83% of the time (112 flights, Jun 2025 to May 2026).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
Moderate track record · 112 flights
Find United 2133 fares Opens this date on Aviasales
#4 · Envoy 3445 · sold as American Eagle
10:47 AM → 1:42 PM2h 55m nonstop
Local times, typical schedule. Last flown 2026-05-05.
81%
chance on time
On time (history)
90%
Cancelled
0.0%
Avg arrival delay
2 min
- Arrived on time 90% of the time (10 flights, Jun 2025 to May 2026).
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find 10:47 AM flight fares Opens this date on Aviasales
#5 · American 1726
6:42 AM → 9:35 AM2h 53m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
On time (history)
82%
Cancelled
1.8%
Avg arrival delay
20 min
- Arrived on time 82% of the time (269 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 54%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
- 52% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 269 flights
Find American 1726 fares Opens this date on Aviasales
#6 · American 1064
6:02 AM → 8:56 AM2h 54m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
On time (history)
84%
Cancelled
6.7%
Avg arrival delay
26 min
- Arrived on time 84% of the time (153 flights, Jun 2025 to May 2026).
- Cancelled 6.7% of the time (11 of 164).
- Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 54%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
Moderate track record · 153 flights
Find American 1064 fares Opens this date on Aviasales
#7 · American 2730
10:56 AM → 1:49 PM2h 53m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as American 3032, 2431; its record covers all of them.
78%
chance on time
On time (history)
80%
Cancelled
2.9%
Avg arrival delay
17 min
- Arrived on time 80% of the time (66 flights, Jun 2025 to May 2026).
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- 68% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 66 flights
Find American 2730 fares Opens this date on Aviasales
#8 · Southwest 2364
10:30 AM → 1:15 PM2h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
On time (history)
78%
Cancelled
0.0%
Avg arrival delay
21 min
- Arrived on time 78% of the time (46 flights, Jun 2025 to May 2026).
- Never cancelled in 46 scheduled flights.
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (46 flights), so its score leans on the airline's record at this hour.
Limited track record · 46 flights
Find Southwest 2364 fares Opens this date on Aviasales
#9 · Envoy 3418 · sold as American Eagle
6:34 AM → 9:25 AM2h 51m nonstop
Local times, typical schedule. Last flown 2026-04-06.
75%
chance on time
On time (history)
71%
Cancelled
5.4%
Avg arrival delay
12 min
- Arrived on time 71% of the time (35 flights, Jun 2025 to May 2026).
- Cancelled 5.4% of the time (2 of 37).
- Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 54%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
Limited track record · 35 flights
Find 6:34 AM flight fares Opens this date on Aviasales
#10 · American 1628
9:30 AM → 12:16 PM2h 46m nonstop
Local times, typical schedule. Last flown 2026-04-01.
75%
chance on time
On time (history)
63%
Cancelled
0.0%
Avg arrival delay
54 min
- Arrived on time 63% of the time (8 flights, Jun 2025 to May 2026).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find American 1628 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

United Airlines74%
1,433 flights · 75% on time as flown · 1.1% cancel
Envoy Air (sold as American Eagle)73%
90 flights · 74% on time as flown · 2.1% cancel
Southwest Airlines70%
234 flights · 70% on time as flown · 1.1% cancel
American Airlines69%
1,186 flights · 71% on time as flown · 2.9% cancel
Republic Airways (sold as American Eagle, Delta Connection or United Express)68%
95 flights · 70% on time as flown · 3.7% cancel
Frontier Airlines64%
127 flights · 63% on time as flown · 3.7% cancel

On time by departure time

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

Before 9 AM84%
896 flights · avg delay 18 min
9 AM to noon79%
751 flights · avg delay 20 min
Noon to 3 PM73%
506 flights · avg delay 23 min
3 to 6 PM59%
690 flights · avg delay 33 min
6 to 9 PM54%
297 flights · avg delay 34 min

Best day: Saturday (82%). Worst: Sunday (75%).

Smarter routing

Nearby airports that run more on time

AUS → MDW 78% chance on time
Austin Bergstrom International Airport to Chicago Midway International Airport · 1,351 flights a year · 15 mi from your airports · yours: 71%
Rank flights Fares

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

Late-arriving aircraft43%
Air traffic control and airport volume32%
Airline (crew, maintenance, boarding)23%
Severe weather2%

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

AUS to ORD questions

What time of day is best to fly AUS to ORD?: Before 9 AM: 84% of flights arrived on time, against 54% for departures 6 to 9 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 AUS to ORD?: United, with a season-adjusted 74% chance of operating and arriving on time over 1,433 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 AUS to ORD?: July (69% on time); the best was February (86%), 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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