Route on-time record
TUS to ORD: most on-time flights and the best time to fly
Tucson (Tucson International Airport) to Chicago (Chicago O'Hare International Airport). 1,039 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 1.5% were cancelled. The most reliable flight number was American 2675 at 6:45 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
TUS → ORD
Tucson to Chicago: 1,039 nonstop flights a year
On time (12 months)
76%
Cancelled
1.5%
avg delay 24 min
Best time to leave
Before 9 AM
86% on time vs 69% noon to 3 PM
Most reliable airline
United
75% chance on time
Lowest nonstop fare seen in the next two months: $209 (American 1968 on 2026-11-09). 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 2675
6:45 AM → 12:24 PM3h 39m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 90%
- Cancelled
- 6.8%
- Avg arrival delay
- 20 min
- Arrived on time 90% of the time (68 flights, Jun 2025 to May 2026).
- Cancelled 6.8% of the time (5 of 73).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; Noon to 3 PM: 69%).
Moderate track record · 68 flights
Find American 2675 fares Opens this date on Aviasales#2 · United 1317
7:15 AM → 12:43 PM3h 28m nonstop
Local times, typical schedule. Last flown 2026-03-28.
82%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 34 min
- Arrived on time 83% of the time (23 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; Noon to 3 PM: 69%).
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find United 1317 fares Opens this date on Aviasales#3 · SkyWest 5557 · sold as United Express, Delta Connection, American Eagle or Alaska
7:15 AM → 1:00 PM3h 45m nonstop
Local times, typical schedule. Last flown 2026-05-20.
82%
chance on time
- On time (history)
- 85%
- Cancelled
- 4.8%
- Avg arrival delay
- 6 min
- Arrived on time 85% of the time (20 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; Noon to 3 PM: 69%).
- Short track record (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find 7:15 AM flight fares Opens this date on Aviasales#4 · American 552
6:00 AM → 11:32 AM3h 32m nonstop
Local times, typical schedule. Last flown 2026-05-20.
81%
chance on time
- On time (history)
- 85%
- Cancelled
- 2.1%
- Avg arrival delay
- 9 min
- Arrived on time 85% of the time (47 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; Noon to 3 PM: 69%).
- Short track record (47 flights), so its score leans on the airline's record at this hour.
Limited track record · 47 flights
Find American 552 fares Opens this date on Aviasales#5 · SkyWest 4672 · sold as United Express, Delta Connection, American Eagle or Alaska
7:25 AM → 1:10 PM3h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 5437; its record covers all of them.
79%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 77% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 43 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; Noon to 3 PM: 69%).
- Short track record (43 flights), so its score leans on the airline's record at this hour.
Limited track record · 43 flights
Find 7:25 AM flight fares Opens this date on Aviasales#6 · SkyWest 5767 · sold as United Express, Delta Connection, American Eagle or Alaska
11:26 AM → 5:05 PM3h 39m nonstop
Local times, typical schedule. Last flown 2026-05-20.
71%
chance on time
- On time (history)
- 74%
- Cancelled
- 2.2%
- Avg arrival delay
- 13 min
- Arrived on time 74% of the time (131 flights, Jun 2025 to May 2026).
- Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 131 flights
Find 11:26 AM flight fares Opens this date on Aviasales#7 · American 3128
12:36 PM → 6:07 PM3h 31m nonstop
Local times, typical schedule. Last flown 2026-04-06.
71%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.9%
- Avg arrival delay
- 25 min
- Arrived on time 75% of the time (112 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 69% on time; Before 9 AM: 86%).
- Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
- 58% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 112 flights
Find American 3128 fares Opens this date on Aviasales#8 · American 2867
12:29 PM → 6:16 PM3h 47m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 3066; its record covers all of them.
69%
chance on time
- On time (history)
- 71%
- Cancelled
- 0.0%
- Avg arrival delay
- 24 min
- Arrived on time 71% of the time (52 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Leaves in this route's least on-time window (Noon to 3 PM: 69% on time; Before 9 AM: 86%).
- Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 52 flights
Find American 2867 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines75%
77 flights · 75% on time as flown · 1.0% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)75%
462 flights · 77% on time as flown · 1.5% cancel
- American Airlines72%
481 flights · 73% on time as flown · 1.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM86%
364 flights · avg delay 17 min
- 9 AM to noon72%
231 flights · avg delay 16 min
- Noon to 3 PM69%
444 flights · avg delay 33 min
Best day: Saturday (87%). Worst: Monday (79%).
Smarter routing
Nearby airports that run more on time
TUS → MDW 83% chance on time
Tucson International Airport to Chicago Midway International Airport · 344 flights a year · 15 mi from your airports · yours: 74%
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 aircraft37%
- Airline (crew, maintenance, boarding)36%
- Air traffic control and airport volume21%
- Severe weather6%
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
TUS to ORD questions
- What time of day is best to fly TUS to ORD?
- Before 9 AM: 86% of flights arrived on time, against 69% for departures noon to 3 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 TUS to ORD?
- United, with a season-adjusted 75% chance of operating and arriving on time over 77 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 TUS to ORD?
- July (72% on time); the best was February (88%), 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 TUS
- ORD to TUS (return)
- TUS to PHX 84%
- TUS to DEN 82%
- TUS to LAX 86%
- TUS to DFW 80%
- TUS to LAS 85%
- TUS to SLC 94%
- TUS to SEA 87%
- TUS to SFO 75%
- TUS to ATL 92%
- TUS to SAN 78%
- TUS to PDX 93%
- TUS to MDW 84%
Live status: FAA delays and ground stops