Flight number record

UA 414

United Airlines · Boston to Denver

Route: BOS → DEN
Departs: 12:22
Flights: 364
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s UA 414, check with United Airlines.

UA 414 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 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 364 flights, with a median arrival 14 minutes early.

Set against the rest of the country, UA 414's record is 12 points better than the US average of 77.3%. That gap is worth roughly 121 fewer late arrivals for every thousand flights.

On time

89.4%

Arrivals under 15 minutes late, of 358 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

1.10%

National rate is 1.89%

1 hour+ late

2.5%

National rate is 8.3%

These figures cover 364 flights between September 2025 and August 2026. The median arrival is 14 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 414 flies

UA 414 flies BOS to DEN without a single fixed slot. Its most common scheduled departure was 12:22, used on 82 of 364 flights, with 11:45 (61 flights) and 11:15 (52 flights) next.

Departs 12:2282 flights22.5%
Departs 11:4561 flights16.8%
Departs 11:1552 flights14.3%

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 12:22 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and UA 414 runs 11 points better at 89.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

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Against the route

UA 414 next to BOS to DEN

Every carrier on BOS to DEN combined arrived on time 75.7% of the time across 3,847 flights, so UA 414 is 14 points ahead of it. United flew 1,884 flights on the same city pair under all its flight numbers, including this one, and those ran 82.5% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 11 points.

UA 414 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 414thin sample	364	89.4%	56 min	1.10%	A
All United Airlines on BOS–DEN	1,884	82.5%	70 min	1.11%	B
All carriers on BOS–DEN	3,847	75.7%	62 min	1.38%	B
United Airlines, whole network	830,825	78.8%	73 min	1.02%	B

Across the year

UA 414 quarter by quarter

UA 414 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jan–Mar 2026 at 84.9%, a swing of 12 points on roughly 73 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 flights96.7%
Oct–Dec 202591 flights91.2%
Jan–Mar 202690 flights84.9%
Apr–Jun 202691 flights91.2%
Jul–Sep 202662 flights86.7%

Scale runs 75% to 100%.

By weekday, UA 414 did best on Wednesday at 96.0% on time and worst on Saturday at 82.4%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late UA 414 runs when it is late

UA 414 often beats the schedule: 178 of 358 completed flights, 50%, arrived 15 minutes or more early. The 38 late arrivals split 14 under half an hour, 15 between 30 and 60 minutes, and 9 an hour or more.

15+ min early178 flights49.7%
Within 15 min142 flights39.7%
15–29 min late14 flights3.9%
30–59 min late15 flights4.2%
1–2 hours late6 flights1.7%
2+ hours late3 flights0.8%

Scale runs 0% to 100%.

Share of 358 completed flights by arrival against schedule.

A late pushback is often recovered here: of 41 departures that left 15 minutes late or more, 16 still arrived on time. 13 flights left on time and still arrived late.

The worst days

Worst days for UA 414

The latest arrival of the period was on 18 July 2026, 5 hours 7 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across July, December, February, October and January, with no single month standing out.

The latest arrivals of UA 414 in the period
Date	Arrived late by	Largest filed cause
18 July 2026	5 hours 7 minutes	Late-arriving aircraft
20 December 2025	3 hours 52 minutes	Carrier
17 February 2026	2 hours 29 minutes	National Airspace System
13 October 2025	1 hour 21 minutes	Late-arriving aircraft
5 January 2026	1 hour 21 minutes	Carrier

Delay causes

Why UA 414 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 2,130 reported delay minutes.

National Airspace System
36%
Carrier
31%
Late-arriving aircraft
30%
Extreme weather
4%

36% 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 765 minutes out of 2,130, against a national NAS share of 21%. The split is drawn from 2,130 delay minutes reported on UA 414.

Cancellations sit at 1.10% against a national 1.89%, which is ordinary. Diversions add another 0.55%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 2.5% land an hour or more behind schedule, against 8.3% 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 1,754 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 six other city pairs in the data, including DEN to DFW (123), EWR to BOS (35) and DEN to FAR (24), but none flew often enough under UA 414 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to DEN only.

One caution: this is a thin sample. 364 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 414

For a booking, UA 414 has one of the better records a US domestic flight can show: 89.4% on time and 1.10% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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 22 October 2026; recomputed monthly. How this data is collected.

Key figures