Flight profile · American Airlines
AA1598
Los Angeles (LAX) to Chicago (ORD) · scheduled 8:00 AM – 1:44 PM
How AA1598 performs
622 operations, November 2023 – August 2026.
Between its first and last recorded date on LAX → ORD, AA1598 averaged about 4 operations a week (622 in 1,031 days, cancelled ones included).
AA1598 arrived on time 88.0% of the time, against 80.7% for all LAX → ORD flights, so this departure is 7.3 percentage points better than the route as a whole. Against American Airlines’ own flights on this route it is 10.4 points better.
Source: US DOT Bureau of Transportation Statistics · 622 operations, November 2023 – August 2026 · If AA1598 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 AA1598 compares to other flight numbers, not just to itself.
This flight runs unusually far ahead of the carrier's own average on this route, better than 92% of 12,152 comparable flight numbers.
88.0% on time for this specific departure, against 77.6% for the same carrier's other flights on this route.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – August 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 AA1598 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| AA1598 | 88.0% | 0.32% | -14 min | 5.7% | 622 |
| American Airlines on LAX → ORD | 77.6% | 1.24% | -8 min | 9.2% | 9,332 |
| All LAX → ORD flights | 80.7% | 1.27% | -9 min | 7.2% | 21,929 |
AA1598 cancelled 2 of 622 operations (0.32%), below the 1.27% for LAX → ORD.
5.7% of AA1598’s arrivals were an hour or more late, against 7.2% across LAX → ORD, so the long delays are less common on this number than on the route.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – August 2026
Why AA1598 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for AA1598 on LAX → ORD. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering November 2023 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies AA1598 comes in late, and what that does to the departure.
AA1598 is usually the aircraft’s first flight of the day: the schedule gives it a median of 10.6 hours on the ground at LAX, so its “inbound” is mostly the aircraft’s arrival the evening before.
The aircraft flying AA1598 came in 15 or more minutes late on 31% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Matched by tail number to the aircraft’s previous flight into LAX: 358 of 620 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late |
|---|---|
| AA1598 | 31% |
| Network, same turn | 29% |
A night on the ground absorbs most of a late arrival, so a late inbound matters far less here than on a same-day turn.
The network row is every flight with a scheduled turn of 6 hours or more, usually overnight. How often AA1598’s aircraft landed 15 or more minutes late is about the same as the network’s. There are not enough departures in both groups to compare how it left.
Source: US DOT Bureau of Transportation Statistics · Data covering November 2023 – August 2026
From pushback to gate
When it leaves LAX late, does that still matter by the time it reaches ORD?
AA1598 pushes back an average of 11.0 minutes late and reaches the gate at ORD an average of 0.0 minutes early. The 11.0 minutes between those two figures are slack the published schedule already carries, so on average a late pushback on this flight is made up before the gate. It spends 17.3 minutes on the taxiways at LAX, 3.5 minutes shorter than a typical LAX departure in the same hour.
On arrival at ORD, AA1598 spends 14.8 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 3.2 minutes shorter than a typical ORD arrival (18.0 min).
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 56,951 LAX departures. Taxi-in is landing to gate, set against 985,848 arrivals at ORD. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – August 2026
The hour it leaves LAX
AA1598 has one departure time, 8:00 AM, so this is what that hour at LAX is worth.
On-time arrival rate. 56,951 departures from LAX are scheduled in the 8 AM–9 AM hour over the period, against 611,647 across the whole day.
AA1598 is scheduled out of LAX at 8:00 AM, in the 8 AM–9 AM bank. Departures from LAX in that hour arrive on time 84.6% of the time against 81.3% across the airport’s whole day — the slot alone is worth 3.3 points better before anything about this particular flight is considered.
Both airport figures cover every destination from LAX, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – August 2026 · Hours below 120 departures are not scored.
Other routes AA1598 has flown
Carriers reassign flight numbers. AA1598 also served these 3 other city pairs in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| DFW→GSO Dallas–Fort Worth to Greensboro | July 1, 2023 – April 6, 2026 | 497 | 67.9% |
| GSO→DFW Greensboro to Dallas–Fort Worth | July 1, 2023 – April 6, 2026 | 489 | 65.8% |
| ORD→DEN Chicago to Denver | February 5–6, 2026 | 2 | — |
The figures above describe only LAX → ORD, the route AA1598 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
21 min late
against a median of 14 min early
Percentiles over 622 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering November 2023 – August 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| AA383 | American Airlines | 92.0% | 16 min early | 656 |
| UA2039 | United Airlines | 90.5% | 12 min early | 755 |
| AA1598 this flight | American Airlines | 88.0% | 14 min early | 622 |
| UA2113 | United Airlines | 79.2% | 5 min early | 605 |
| UA1069 | United Airlines | 73.0% | 2 min late | 954 |
Among all 5 departures on this route with at least 600 operations, AA1598 has the 3rd highest on-time rate, 4.0 points behind the best. Every departure here has at least 600 operations; the other rows are the most punctual on the route, not all of them.
Data and methodology
Calculated by FlyerIntel from 622 records of AA1598 operating LAX → 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 reported separately, not in the on-time rate.
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