ORD to TUS flight delays & on-time performance
Nonstop flights from Chicago O'Hare International Airport to Tucson International Airport · 1,437 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ORD or TUS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Chicago (ORD) to Tucson (TUS) arrived on time 70% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.6% were cancelled, and 12% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (72% on time); American Airlines was the least (68%).
- Departures scheduled around 8am did best (78% on time); around 10pm did worst (37%).
- Tuesday was the most reliable day to fly (80% on time) and Friday the least (61%).
- The largest source of delay minutes was late-arriving aircraft (44%).
Which airline is most on time from ORD to TUS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 72% | 2.4% | 22 min | 9.6% | 463 |
| United Airlines | 71% | 0.0% | 26 min | 14.3% | 77 |
| American Airlines | 68% | 1.2% | 27 min | 13.6% | 483 |
| Envoy AirRegional airline operating American Eagle flights. | 58% | 0.0% | 26 min | 15.8% | 19 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am78%79 flights
- 9am77%458 flights
- 10am74%72 flights
- 3pm62%13 flights
- 5pm92%14 flights
- 6pm54%24 flights
- 7pm68%227 flights
- 8pm38%43 flights
- 9pm51%50 flights
- 10pm37%44 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday66%2.6% cancelled
- Tuesday80%1.4% cancelled
- Wednesday64%0.7% cancelled
- Thursday72%2.7% cancelled
- Friday61%2.0% cancelled
- Saturday72%0.7% cancelled
- Sunday74%1.3% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft44%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion18%
- Extreme weather7%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather88%
- Air traffic control & airport congestion12%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
ORD to TUS: common questions
- How often are ORD to TUS flights on time?
- 70% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Chicago to Tucson cancelled?
- 1.6% of scheduled flights were cancelled (17 of 1,042).
- How long are typical delays?
- Across all flights the average arrival delay was 25 min (early arrivals count as zero). Flights that were late arrived 79 min behind schedule on average, and 11.9% of flights were an hour or more late.
- How long is taxi time at ORD?
- Flights on this route spent 31 min taxiing from the gate to takeoff on average.
Related routes
Return trip: TUS to ORD — 77% on time
More flights from Chicago
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ORD → TUS, nonstop flights by US airlines that report to the DOT. How we calculate this.