Flight profile · United Airlines
UA590
Baltimore (BWI) to Chicago (ORD) · scheduled 5:41 PM – 6:55 PM
How UA590 performs
1,119 operations, July 2023 – July 2026.
UA590 arrived on time 63.8% of the time, against 79.2% for all BWI → ORD flights, so this departure is 15.4 percentage points worse than the route as a whole. Against United Airlines’ own flights on this route it is 16.6 points worse.
UA590’s scheduled departure has moved during the period FlyerIntel has on file: it typically left around 5:45 PM earlier on, and around 5:15 PM more recently — a 30-minute shift, not the few minutes of day-to-day rounding every published schedule carries. Confirm the current departure time before booking around an older listing.
Source: US DOT Bureau of Transportation Statistics · 1,119 operations, July 2023 – July 2026 · If UA590 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How UA590 compares to other flight numbers, not just to itself.
This flight runs unusually far behind the carrier's own average on this route, worse than 96% of 11,589 comparable flight numbers.
63.8% on time for this specific departure, against 80.4% for the same carrier's other flights on this route.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where UA590 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
Ask for the position of UA590 right now, if receivers on the ground are hearing it. Nothing is requested until you press the button.
Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| UA590 | 63.8% | 0.98% | 5 min | 13.1% | 1,119 |
| United Airlines on BWI → ORD | 80.4% | 1.27% | -6 min | 6.9% | 3,382 |
| All BWI → ORD flights | 79.2% | 1.65% | -7 min | 7.4% | 8,342 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Why UA590 runs late
Where US DOT attributed the delay minutes on this flight.
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for UA590 on BWI → ORD. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies UA590 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, UA590 pushed back an average of 80 minutes late; when it came in on time or early, an average of 5 minutes late.
Each departure is matched to the flight the same aircraft flew into BWI just before it, using the tail number in the DOT file, 1,084 of 1,109 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| UA590 | 17% | 74% | 9% |
| Network, same turn | 17% | 68% | 9% |
The schedule leaves a normal turn: enough time to clean and board if the aircraft is on time, little to spare if it is not.
The network row is every flight with a scheduled turn of 60 to 89 minutes. How often UA590’s aircraft landed 15 or more minutes late is about the same as the network’s and, once the aircraft was late, how often UA590 left 15 or more minutes late is higher than the network’s.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
From pushback to gate
When it leaves BWI late, does that still matter by the time it reaches ORD?
UA590 pushes back an average of 23.7 minutes late and arrives a further 6.3 minutes behind that. This departure loses ground between the two gates rather than recovering it, so a late pushback here tends to get worse on the way, not better. Its 15.9 minutes on the taxiways at BWI is about what any departure from the airport in that hour spends.
On arrival at ORD, UA590 spends 23.7 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 5.8 minutes longer than a typical ORD arrival (17.8 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached ORD. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 16,839 departures from BWI scheduled in the clock hour UA590 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at ORD (952,666 flights), not just UA590’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
The hour it leaves BWI
Part of any flight’s record belongs to the clock rather than to the flight. UA590 has one departure time, so this is what that time is worth.
On-time arrival rate. 16,839 departures from BWI are scheduled in the 5 PM–6 PM hour over the period, against 299,178 across the whole day.
UA590 is scheduled out of BWI at 5:41 PM, in the 5 PM–6 PM bank. Departures from BWI in that hour arrive on time 66.3% of the time against 76.0% across the airport’s whole day — the slot alone is worth 9.6 points worse before anything about this particular flight is considered.
The two airport figures cover every departure from BWI to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Hours below 120 departures are not scored.
By day of week
Does UA590 run worse on particular days?
Saturday is historically the most reliable day and Tuesday the least, a gap of 9.5 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Days with fewer than 120 operations are not scored.
Other routes UA590 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| ORD→OMA Chicago to Omaha | July 4, 2026 | 1 | — |
| ORD→GRR Chicago to Grand Rapids | September 26, 2025 – October 24, 2025 | 15 | — |
| IAH→SBN Houston to South Bend | September 12, 2025 | 1 | — |
| ORD→DFW Chicago to Dallas–Fort Worth | August 1–18, 2025 | 18 | — |
| MIA→ORD Miami to Chicago | July 4, 2025 | 1 | — |
| ORD→TVC Chicago to Traverse City | November 1, 2024 – December 2, 2024 | 31 | — |
| LAX→IAH Los Angeles to Houston | December 16, 2023 | 1 | — |
| PNS→ORD Pensacola to Chicago | November 23, 2023 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route UA590 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
87 min late
against a median of 5 min late
UA590 has an average that understates its risk: a typical arrival is 5 min late, but the worst tenth are 82 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 1,119 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA455 | United Airlines | 91.1% | 14 min early | 695 |
| UA590 this flight | United Airlines | 63.8% | 5 min late | 1,119 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. UA590 is placed in the same ordering rather than left out of it; the rows around it are the most punctual departures on the route, not all of them, so this is a comparison and not a rank. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 1,119 records of UA590 operating BWI → ORD, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed