ORD to CHA flight delays & on-time performance
Nonstop flights from Chicago O'Hare International Airport to Chattanooga Metropolitan Airport (Lovell Field) · 501 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ORD or CHA 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 Chattanooga (CHA) arrived on time 70% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 5% were cancelled, and 12% arrived an hour or more late.
- Envoy Air was the most punctual airline here (77% on time); Republic Airways was the least (65%).
- Departures scheduled around 7pm did best (76% on time); around 9pm did worst (61%).
- Wednesday was the most reliable day to fly (73% on time) and Sunday the least (57%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (41%).
Which airline is most on time from ORD to CHA?
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 |
|---|---|---|---|---|---|
| Envoy AirRegional airline operating American Eagle flights. | 77% | 3.4% | 19 min | 11.6% | 206 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 69% | 5.6% | 25 min | 12.2% | 481 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 65% | 5.2% | 30 min | 12.2% | 269 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am75%64 flights
- 8am71%17 flights
- 10am73%81 flights
- 1pm72%131 flights
- 2pm68%66 flights
- 3pm70%141 flights
- 5pm61%93 flights
- 6pm64%98 flights
- 7pm76%43 flights
- 8pm74%156 flights
- 9pm61%65 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday71%9.2% cancelled
- Tuesday72%2.3% cancelled
- Wednesday73%2.7% cancelled
- Thursday71%4.2% cancelled
- Friday72%6.2% cancelled
- Saturday72%5.9% cancelled
- Sunday57%4.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)41%
- Late-arriving aircraft29%
- Air traffic control & airport congestion17%
- Extreme weather12%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather73%
- Air traffic control & airport congestion27%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
ORD to CHA: common questions
- How often are ORD to CHA 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 Chattanooga cancelled?
- 5.0% of scheduled flights were cancelled (48 of 956).
- 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 80 min behind schedule on average, and 12.0% of flights were an hour or more late.
- How long is taxi time at ORD?
- Flights on this route spent 30 min taxiing from the gate to takeoff on average.
Related routes
Return trip: CHA to ORD — 72% on time
More flights from Chicago
More flights to Chattanooga
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ORD → CHA, nonstop flights by US airlines that report to the DOT. How we calculate this.