Route on-time record
ORD to TUS: most on-time flights and the best time to fly
Chicago (Chicago O'Hare International Airport) to Tucson (Tucson International Airport). 1,041 nonstop flights in Jun 2025 to May 2026, 69% arrived within 15 minutes and 1.5% were cancelled. The most reliable flight number was American 2867 at 9:46 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
ORD → TUS
Chicago to Tucson: 1,041 nonstop flights a year
On time (12 months)
69%
Cancelled
1.5%
avg delay 25 min
Best time to leave
Before 9 AM
79% on time vs 46% after 9 PM
Most reliable airline
SkyWest
72% 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 · American 2867
9:46 AM → 11:36 AM3h 50m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 3066, 3128; its record covers all of them.
75%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.6%
- Avg arrival delay
- 19 min
- Arrived on time 76% of the time (170 flights, Jun 2025 to May 2026).
- Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
- 50% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 170 flights
Find American 2867 fares Opens this date on Aviasales#2 · SkyWest 5833 · sold as United Express, Delta Connection, American Eagle or Alaska
9:20 AM → 11:35 AM4h 17m nonstop
Local times, typical schedule. Last flown 2026-05-20.
72%
chance on time
- On time (history)
- 69%
- Cancelled
- 1.5%
- Avg arrival delay
- 16 min
- Arrived on time 69% of the time (127 flights, Jun 2025 to May 2026).
- Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
Moderate track record · 127 flights
Find 9:20 AM flight fares Opens this date on Aviasales#3 · SkyWest 5719 · sold as United Express, Delta Connection, American Eagle or Alaska
7:50 PM → 10:16 PM4h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 5852, 5572; its record covers all of them.
66%
chance on time
- On time (history)
- 63%
- Cancelled
- 5.1%
- Avg arrival delay
- 20 min
- Arrived on time 63% of the time (56 flights, Jun 2025 to May 2026).
- Cancelled 5.1% of the time (3 of 59).
- Departs inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (56 flights), so its score leans on the airline's record at this hour.
Limited track record · 56 flights
Find 7:50 PM flight fares Opens this date on Aviasales#4 · United 2472
7:52 PM → 9:59 PM4h 07m nonstop
Local times, typical schedule. Last flown 2026-03-27.
63%
chance on time
- On time (history)
- 65%
- Cancelled
- 0.0%
- Avg arrival delay
- 53 min
- Arrived on time 65% of the time (20 flights, Jun 2025 to May 2026).
- Departs inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
- 55% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find United 2472 fares Opens this date on Aviasales#5 · American 639
10:11 PM → 11:59 PM3h 48m nonstop
Local times, typical schedule. Last flown 2026-05-20.
49%
chance on time
- On time (history)
- 40%
- Cancelled
- 2.1%
- Avg arrival delay
- 52 min
- Arrived on time 40% of the time (47 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (After 9 PM: 46% on time; Before 9 AM: 79%).
- Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
- 68% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 47 flights
Find American 639 fares Opens this date on Aviasales#6 · American 2661
9:09 PM → 10:57 PM3h 48m nonstop
Local times, typical schedule. Last flown 2026-05-31.
49%
chance on time
- On time (history)
- 39%
- Cancelled
- 7.0%
- Avg arrival delay
- 75 min
- Arrived on time 39% of the time (66 flights, Jun 2025 to May 2026).
- Cancelled 7.0% of the time (5 of 71).
- Leaves in this route's least on-time window (After 9 PM: 46% on time; Before 9 AM: 79%).
- Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
Moderate track record · 66 flights
Find American 2661 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)72%
463 flights · 73% on time as flown · 1.5% cancel
- United Airlines68%
77 flights · 71% on time as flown · 1.0% cancel
- American Airlines65%
482 flights · 66% on time as flown · 1.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM79%
80 flights · avg delay 13 min
- 9 AM to noon76%
597 flights · avg delay 17 min
- 6 to 9 PM55%
266 flights · avg delay 44 min
- After 9 PM46%
60 flights · avg delay 55 min
Best day: Tuesday (79%). Worst: Friday (72%).
Smarter routing
Nearby airports that run more on time
MDW → TUS 80% chance on time
Chicago Midway International Airport to Tucson International Airport · 344 flights a year · 15 mi from your airports · yours: 68%
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 aircraft42%
- Airline (crew, maintenance, boarding)35%
- Air traffic control and airport volume16%
- Severe weather7%
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
ORD to TUS questions
- What time of day is best to fly ORD to TUS?
- Before 9 AM: 79% of flights arrived on time, against 46% for departures after 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 ORD to TUS?
- SkyWest, with a season-adjusted 72% chance of operating and arriving on time over 463 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 ORD to TUS?
- April (65% on time); the best was September (83%), 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 ORD
- TUS to ORD (return)
- ORD to LGA 67%
- ORD to BOS 68%
- ORD to LAX 74%
- ORD to DFW 70%
- ORD to DCA 69%
- ORD to MCO 73%
- ORD to ATL 74%
- ORD to MSP 69%
- ORD to DEN 74%
- ORD to IAH 75%
- ORD to EWR 69%
- ORD to DTW 71%
Live status: FAA delays and ground stops