Flight profile · Delta Air Lines
DL2099
New York (LGA) to Houston (IAH) · scheduled 10:10 AM – 1:17 PM
How DL2099 performs
719 operations, June 2024 – July 2026.
Source: US DOT Bureau of Transportation Statistics · 719 operations, June 2024 – July 2026 · If DL2099 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where DL2099 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 |
|---|---|---|---|---|---|
| DL2099 | 78.4% | 2.36% | -12 min | 7.8% | 719 |
| Delta Air Lines on LGA → IAH | 76.7% | 2.47% | -12 min | 10.8% | 4,097 |
| All LGA → IAH flights | 78.7% | 2.31% | -11 min | 9.1% | 12,405 |
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026
Why DL2099 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
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 DL2099 on LGA → IAH. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies DL2099 comes in late, and what that does to the departure.
The aircraft flying DL2099 came in 15 or more minutes late on 11% 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.
Each departure is matched to the flight the same aircraft flew into LGA just before it, using the tail number in the DOT file, 569 of 704 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 |
|---|---|
| DL2099 | 11% |
| Network, same turn | 18% |
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 45 to 59 minutes. How often DL2099’s aircraft landed 15 or more minutes late is lower than the network’s. There are not enough departures in both groups to compare how it left.
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 June 2024 – July 2026
From pushback to gate
When it leaves LGA late, does that still matter by the time it reaches IAH?
DL2099 pushes back an average of 11.9 minutes late and reaches the gate at IAH an average of 1.7 minutes late. The 10.2 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. It spends 25.2 minutes on the taxiways at LGA, 1.1 minutes longer than a typical LGA departure in the same hour.
On arrival at IAH, DL2099 spends 9.5 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 1.2 minutes shorter than a typical IAH arrival (10.7 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 IAH. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 26,659 departures from LGA scheduled in the clock hour DL2099 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at IAH (359,471 flights), not just DL2099’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026
The hour it leaves LGA
Part of any flight’s record belongs to the clock rather than to the flight. DL2099 has one departure time, so this is what that time is worth.
On-time arrival rate. 26,659 departures from LGA are scheduled in the 10 AM–11 AM hour over the period, against 456,467 across the whole day.
DL2099 is scheduled out of LGA at 10:10 AM, in the 10 AM–11 AM bank. Departures from LGA in that hour arrive on time 84.1% of the time against 78.3% across the airport’s whole day — the slot alone is worth 5.8 points better before anything about this particular flight is considered.
The two airport figures cover every departure from LGA 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 · June 2024 – July 2026 · Hours below 120 departures are not scored.
Other routes DL2099 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 |
|---|---|---|---|
| IAH→LGA Houston to New York | June 7, 2024 – July 25, 2026 | 305 | 74.2% |
| LGA→MSY New York to New Orleans | February 6–10, 2025 | 3 | — |
| MSY→LGA New Orleans to New York | February 6–10, 2025 | 3 | — |
| PDX→MSP Portland to Minneapolis | October 12, 2024 – November 9, 2024 | 5 | — |
| LGA→RDU New York to Raleigh–Durham | June 8, 2024 – July 6, 2024 | 5 | — |
| DTW→GRR Detroit to Grand Rapids | May 7, 2024 – June 6, 2024 | 31 | — |
| GRR→DTW Grand Rapids to Detroit | May 7, 2024 – June 6, 2024 | 31 | — |
| PHX→SEA Phoenix to Seattle | April 9, 2024 – May 6, 2024 | 28 | — |
| SEA→PHX Seattle to Phoenix | April 9, 2024 – May 6, 2024 | 28 | — |
| LGA→PBI New York to West Palm Beach | January 13, 2024 – April 8, 2024 | 39 | — |
| PBI→LGA West Palm Beach to New York | January 13, 2024 – March 9, 2024 | 9 | — |
| MSP→DTW Minneapolis to Detroit | January 8, 2024 – March 8, 2024 | 50 | — |
| RDU→DTW Raleigh–Durham to Detroit | February 18, 2024 | 1 | — |
| ATL→GSO Atlanta to Greensboro | January 14, 2024 | 1 | — |
| LAS→CVG Las Vegas to Cincinnati / Covington | January 1–7, 2024 | 7 | — |
| ATL→MEM Atlanta to Memphis | December 7–30, 2023 | 18 | — |
| MEM→ATL Memphis to Atlanta | December 7–30, 2023 | 18 | — |
| BOS→CVG Boston to Cincinnati / Covington | July 5, 2023 – November 24, 2023 | 125 | 79.7% |
| GSP→DTW Greenville/Greer/Spartanburg to Detroit | November 22, 2023 | 1 | — |
| CVG→BOS Cincinnati / Covington to Boston | July 5, 2023 – November 18, 2023 | 115 | 85.1% |
| MSP→AUS Minneapolis to Austin | October 28, 2023 – November 4, 2023 | 8 | — |
Because the same number has served different journeys, the statistics above describe only the route DL2099 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.
45 min late
against a median of 12 min early
Percentiles over 719 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL2099 this flight | Delta Air Lines | 78.4% | 12 min early | 719 |
| DL2109 | Delta Air Lines | 63.4% | 4 min early | 683 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. DL2099 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 719 records of DL2099 operating LGA → IAH, 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