Flight number record
UA 2224
United Airlines · Houston to Washington
- Route
- IAH → DCA
- Departs
- 19:50
- Flights
- 303
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2224, check with United Airlines.
UA 2224 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land about 50 minutes behind schedule. That rests on 303 flights, with a median arrival 4 minutes early.
The national on-time rate over the same period is 77.3%, so UA 2224 runs 6 points behind the country as a whole. Across a thousand flights that is about 60 extra late arrivals.
Key figures
On time
71.3%
Arrivals under 15 minutes late, of 300 completed flights
Avg delay
51 min
Across delayed arrivals only, not all flights
Cancelled
0.66%
National rate is 1.89%
1 hour+ late
7.7%
National rate is 8.3%
These figures cover 303 flights between September 2025 and August 2026. The median arrival is 4 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When UA 2224 flies
UA 2224 flies IAH to DCA without a single fixed slot. Its most common scheduled departure was 19:50, used on 175 of 303 flights, with 19:53 (68 flights) and 20:00 (38 flights) next.
- Departs 19:50175 flights57.8%
- Departs 19:5368 flights22.4%
- Departs 20:0038 flights12.5%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 19:50 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 2224 runs 3 points better at 71.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
UA 2224 next to IAH to DCA
Every carrier on IAH to DCA combined arrived on time 75.3% of the time across 3,337 flights, so UA 2224 is 4 points behind it. United flew 2,385 flights on the same city pair under all its flight numbers, including this one, and those ran 76.7% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2224thin sample | 303 | 71.3% | 51 min | 0.66% | C+ |
| All United Airlines on IAH–DCA | 2,385 | 76.7% | 69 min | 0.67% | B+ |
| All carriers on IAH–DCA | 3,337 | 75.3% | 75 min | 2.31% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2224 quarter by quarter
UA 2224 did not run the same all year. Its best quarter was Jan–Mar 2026 at 88.7% on time and its weakest Jul–Sep 2026 at 52.7%, a swing of 36 points on roughly 61 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights73.3%
- Oct–Dec 202568 flights70.6%
- Jan–Mar 202664 flights88.7%
- Apr–Jun 202685 flights70.6%
- Jul–Sep 202656 flights52.7%
Scale runs 45% to 95%.
By weekday, UA 2224 did best on Tuesday at 82.6% on time and worst on Thursday at 58.1%. Each day rests on about 43 flights, so a gap of 24 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2224 runs when it is late
The 86 late arrivals split 21 under half an hour, 42 between 30 and 60 minutes, and 23 an hour or more.
- 15+ min early74 flights24.7%
- Within 15 min140 flights46.7%
- 15–29 min late21 flights7.0%
- 30–59 min late42 flights14.0%
- 1–2 hours late20 flights6.7%
- 2+ hours late3 flights1.0%
Scale runs 0% to 100%.
Share of 300 completed flights by arrival against schedule.
12 of 84 late departures made up the time and arrived on time, 14% of them. 14 flights left on time and still arrived late.
The worst days
Worst days for UA 2224
The latest arrival of the period was on 12 June 2026, 3 hours 24 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. Three of the five worst days fell in June 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 June 2026 | 3 hours 24 minutes | National Airspace System |
| 14 June 2026 | 2 hours 16 minutes | National Airspace System |
| 7 November 2025 | 2 hours 8 minutes | Late-arriving aircraft |
| 11 June 2026 | 1 hour 45 minutes | National Airspace System |
| 27 May 2026 | 1 hour 41 minutes | National Airspace System |
Delay causes
Why UA 2224 runs late
National Airspace System accounts for 50% of the 4,355 delay minutes carriers reported here, and the remaining four split what is left.
- 50%National Airspace System
- 30%Late-arriving aircraft
- 17%Carrier
- 3%Extreme weather
50% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 2,171 minutes out of 4,355, against a national NAS share of 21%. The split is drawn from 4,355 delay minutes reported on UA 2224.
Cancellations are rare at 0.66%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
7.7% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 50 minutes, which a normal layover absorbs.
The 1,208 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on ten other city pairs in the data, including PIT to IAH (50), SJC to IAH (36) and DEN to SJC (36), but none flew often enough under UA 2224 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to DCA only.
One caution: this is a thin sample. 303 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking UA 2224
For a booking, read UA 2224 as 71.3% on time with 0.66% cancelled over 303 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- IAH to DCA, every carrier and departure
- DCA to IAH, the return direction
- United Airlines 1627 on the same route67.0%
- United Airlines 654 on the same route77.7%
- George Bush Intercontinental (IAH) delay statistics
- Ronald Reagan Washington National (DCA) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.