About 1 in 4 UA 745 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (26%); 2.5% were cancelled. The typical flight landed 7 minutes early.
UA 745: ATL → ORD
Scheduled to leave Atlanta at 1:18 p.m. local time. Over the past year it arrived on time 74% of the time (197 flights), in line with other UA flights on the route at that hour (76%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 31 | 61% |
| Tuesday | 31 | 81% |
| Wednesday | 31 | 84% |
| Thursday | 31 | 81% |
| Friday | 31 | 65% |
| Saturday | 11 | — |
| Sunday | 31 | 77% |
Why it was late
All flights ATL → ORD · Connecting off UA 745? Check the risk
UA 745: ORD → SAN
Scheduled to leave Chicago at 4:05 p.m. local time. Over the past year it arrived on time 65% of the time (156 flights), better than other UA flights on the route at that hour (62%). Last seen in the data Aug 10, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 23 | 61% |
| Tuesday | 22 | 77% |
| Wednesday | 22 | 73% |
| Thursday | 23 | 57% |
| Friday | 23 | 43% |
| Saturday | 20 | 85% |
| Sunday | 23 | 65% |
Why it was late
All flights ORD → SAN · Connecting off UA 745? Check the risk
Questions
How often is UA 745 from ATL to ORD late?
United Airlines 745 from Atlanta, GA to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 26% of 197 scheduled flights between September 2025 and August 2026. 2.5% were cancelled.
How often is UA 745 from ORD to SAN late?
United Airlines 745 from Chicago, IL to San Diego, CA arrived 15 or more minutes late, was diverted or was cancelled on 35% of 156 scheduled flights between September 2025 and August 2026. 1.3% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.