No delays reported for UA 591 (EGE→IAH, EGE→ORD, EWR→SAT) as of 6:45 PM ET. It arrived on time 81.3% of the time in June-August 2026. When it was late, the average delay was 55 minutes. 1.1% of flights were cancelled. Right now there are no reported delays at EGE, IAH, ORD, EWR, SAT.
May not fly today
Leg 1 of 3 (EGE → IAH): Next leg EGE → IAH, scheduled 7:15 AM local time. No delays at EGE right now, and it usually runs on time. This flight number flew about 5 days a week in June-August 2026, so it may not operate today.
Cancellation risk: Medium 1.1% of its flights were cancelled in June-August 2026; rough weather at SAT, IAH.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check United for official times.
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| EGE → IAH Eagle, CO to Houston, TX | 7:15 AM → 11:15 AM | 83% |
| EGE → ORD Eagle, CO to Chicago, IL | 8:00 AM → 11:55 AM | 85% |
| EWR → SAT Newark, NJ to San Antonio, TX | 9:29 AM → 12:30 PM | 79% |
Local times. Schedules change; check your booking.
How reliable is UA 591?
| Arrived on time (within 15 min) | 81.3% |
| Average delay when late | 55 min |
| Cancelled | 1.1% |
| Diverted | 0% |
| Flights tracked | 92 |
Best and worst days to fly UA 591
UA 591 was most reliable on Sundays (92% on time) and least reliable on Mondays (71%).
| Monday | |
| Tuesday | |
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Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by United to the Department of Transportation.
Other flights EWR → SAT
All flights on this route, ranked
Live status at its airports
We show airport-wide airport status, not this flight's gate or live position. For that, check the United app.
United delays and what you're owed · Airline phone numbers
About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June-August 2026. Live conditions: live airport status. "On time" means arriving within 15 minutes of schedule.
Common questions
Is UA 591 delayed today?
Right now there are no reported delays at EGE, IAH, ORD, EWR, SAT. Checked 6:45 PM ET. For this flight's gate and exact status, check the United app.
Is UA 591 usually on time?
UA 591 arrived within 15 minutes of schedule 81.3% of the time in June-August 2026, with an average delay of 55 minutes when late.
How often is UA 591 cancelled?
1.1% of UA 591 flights were cancelled in June-August 2026.