Flight number record

UA 414

United Airlines · Boston to Denver

Route: BOS → DEN
Departs: 11:45
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 364 flights, with a median arrival 16 minutes early.

Set against the rest of the country, UA 414's record is 12 points better than the US average of 77.6%. That gap is worth roughly 124 fewer late arrivals for every thousand flights.

On time

90.0%

Arrivals under 15 minutes late, of 360 completed flights

Avg delay

49 min

Across delayed arrivals only, not all flights

Cancelled

1.10%

National rate is 1.81%

1 hour+ late

1.9%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. The median arrival is 16 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 414 flies

UA 414 flies BOS to DEN without a single fixed slot. Its most common scheduled departure was 11:45, used on 110 of 364 flights, with 11:15 (52 flights) and 12:22 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:45110 flights30.2%
Departs 11:1552 flights14.3%
Departs 12:2241 flights11.3%

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 11:45 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and UA 414 runs 11 points better at 90.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 414 next to BOS to DEN

Every carrier on BOS to DEN combined arrived on time 76.5% of the time across 3,899 flights, so UA 414 is 14 points ahead of it. United flew 1,908 flights on the same city pair under all its flight numbers, including this one, and those ran 83.0% on time. Across its whole network United Airlines managed 79.0%, 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	90.0%	49 min	1.10%	A
All United Airlines on BOS–DEN	1,908	83.0%	64 min	1.00%	B
All carriers on BOS–DEN	3,899	76.5%	58 min	1.18%	B
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 414 quarter by quarter

Quarter by quarter UA 414 held fairly steady: 92.4% in Jul–Sep 2025, 91.2% in Oct–Dec 2025, 84.9% in Jan–Mar 2026 and 91.2% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights92.4%
Oct–Dec 202591 flights91.2%
Jan–Mar 202690 flights84.9%
Apr–Jun 202691 flights91.2%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, UA 414 ranged from 84.3% on Thursday to 96.1% on Wednesday. With about 52 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.

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 1,746 reported delay minutes.

National Airspace System
36%
Carrier
35%
Late-arriving aircraft
25%
Extreme weather
3%

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 628 minutes out of 1,746, against a national NAS share of 21%. The split is drawn from 1,746 delay minutes reported on UA 414.

Cancellations sit at 1.10% 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 1.9% 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 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 seven other city pairs in the data, including DEN to DFW (73), EWR to BOS (35) and DEN to SBA (29), 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: 90.0% 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures