Flight number record
UA 2210
United Airlines · Los Angeles to Boston
- Route
- LAX → BOS
- Departs
- 22:55
- Flights
- 348
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2210, check with United Airlines.
UA 2210 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 13 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 40 minutes. That rests on 348 flights, with a median arrival 15 minutes early.
Set against the rest of the country, UA 2210's record is 13 points better than the US average of 77.6%. That gap is worth roughly 131 fewer late arrivals for every thousand flights.
Key figures
On time
90.7%
Arrivals under 15 minutes late, of 343 completed flights
Avg delay
42 min
Across delayed arrivals only, not all flights
Cancelled
1.44%
National rate is 1.81%
1 hour+ late
2.0%
National rate is 8.1%
These figures cover 348 flights between July 2025 and June 2026. The median arrival is 15 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.
Schedule
When UA 2210 flies
UA 2210 flies LAX to BOS without a single fixed slot. Its most common scheduled departure was 22:55, used on 65 of 348 flights, with 22:43 (51 flights) and 22:51 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 22:5565 flights18.7%
- Departs 22:4351 flights14.7%
- Departs 22:5137 flights10.6%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 22:55 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and UA 2210 runs 20 points better at 90.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
UA 2210 next to LAX to BOS
Every carrier on LAX to BOS combined arrived on time 78.4% of the time across 4,718 flights, so UA 2210 is 12 points ahead of it. United flew 716 flights on the same city pair under all its flight numbers, including this one, and those ran 87.0% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2210thin sample | 348 | 90.7% | 42 min | 1.44% | A |
| All United Airlines on LAX–BOS | 716 | 87.0% | 70 min | 1.12% | A |
| All carriers on LAX–BOS | 4,718 | 78.4% | 81 min | 1.42% | B |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 2210 quarter by quarter
UA 2210 did not run the same all year. Its best quarter was Apr–Jun 2026 at 97.7% on time and its weakest Jan–Mar 2026 at 82.2%, a swing of 16 points on roughly 87 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 202592 flights91.2%
- Oct–Dec 202592 flights90.2%
- Jan–Mar 202677 flights82.2%
- Apr–Jun 202687 flights97.7%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2210 did best on Tuesday at 97.4% on time and worst on Wednesday at 83.3%. Each day rests on about 50 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Delay causes
Why UA 2210 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,353 reported delay minutes.
- 37%Late-arriving aircraft
- 37%Carrier
- 26%National Airspace System
37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 1,353 reported delay minutes here, that single category outweighs weather by 37 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 1,353 delay minutes reported on UA 2210.
Cancellations sit at 1.44% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.0% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
At 2,611 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The same number turns up on one other city pair in the data, including SFO to LAX (49), but none flew often enough under UA 2210 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to BOS only.
One caution: this is a thin sample. 348 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 2210
For a booking, UA 2210 has one of the better records a US domestic flight can show: 90.7% on time and 1.44% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- LAX to BOS, every carrier and departure
- BOS to LAX, the return direction
- United Airlines 1783 on the same route83.4%
- Delta Air Lines 639 on the same route83.2%
- American Airlines 12 on the same route77.2%
- American Airlines 2453 on the same route81.2%
- JetBlue Airways 988 on the same route78.8%
- Delta Air Lines 437 on the same route73.3%
- Los Angeles International (LAX) delay statistics
- Boston Logan International (BOS) 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
- Why the first flight of the morning is statistically safest
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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.