About 1 in 3 UA 1779 flights from San Diego arrived 15+ minutes late, diverted or cancelled over the past year (35%); 0.0% were cancelled. The typical flight landed 5 minutes late.
UA 1779: SAN → ORD
Scheduled to leave San Diego at 2:11 p.m. local time. Over the past year it arrived on time 65% of the time (364 flights), in line with other UA flights on the route at that hour (65%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 66% |
| Tuesday | 52 | 79% |
| Wednesday | 52 | 69% |
| Thursday | 51 | 55% |
| Friday | 52 | 60% |
| Saturday | 52 | 77% |
| Sunday | 52 | 46% |
Why it was late
All flights SAN → ORD · Connecting off UA 1779? Check the risk
UA 1779: ORD → BOS
Scheduled to leave Chicago at 9:41 p.m. local time. Over the past year it arrived on time 64% of the time (202 flights), in line with other UA flights on the route at that hour (65%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from Chicago to Boston (100% of days). United Airlines's last ORD–BOS flight was cancelled 3.3% of the time, against 1.6% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 6:05 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 34 | 62% |
| Tuesday | 19 | — |
| Wednesday | 22 | 59% |
| Thursday | 34 | 59% |
| Friday | 34 | 62% |
| Saturday | 23 | 83% |
| Sunday | 36 | 64% |
Why it was late
All flights ORD → BOS · Connecting off UA 1779? Check the risk
Questions
How often is UA 1779 from SAN to ORD late?
United Airlines 1779 from San Diego, CA to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 35% of 364 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.
How often is UA 1779 from ORD to BOS late?
United Airlines 1779 from Chicago, IL to Boston, MA arrived 15 or more minutes late, was diverted or was cancelled on 36% of 202 scheduled flights between September 2025 and August 2026. 3.0% 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.