Flight number record

UA 1420

United Airlines · Houston to Portland

Route: IAH → PDX
Departs: 20:00
Flights: 355
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1420, check with United Airlines.

UA 1420 lands a B, about a point better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 355 flights, with a median arrival 6 minutes early.

On time

78.6%

Arrivals under 15 minutes late, of 350 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

1.13%

National rate is 1.81%

1 hour+ late

6.9%

National rate is 8.1%

These figures cover 355 flights between July 2025 and June 2026. The median arrival is 6 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 1420 flies

UA 1420 flies IAH to PDX without a single fixed slot. Its most common scheduled departure was 20:00, used on 73 of 355 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:0073 flights20.6%

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 20:00 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and UA 1420 runs 8 points better at 78.6%. 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 1420 next to IAH to PDX

Every carrier on IAH to PDX combined arrived on time 81.1% of the time across 1,233 flights, so UA 1420 is 3 points behind it. United flew 880 flights on the same city pair under all its flight numbers, including this one, and those ran 82.0% on time. Across its whole network United Airlines managed 79.0%, close to this flight's figure.

UA 1420 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1420thin sample	355	78.6%	56 min	1.13%	B
All United Airlines on IAH–PDX	880	82.0%	68 min	0.57%	B+
All carriers on IAH–PDX	1,233	81.1%	67 min	0.73%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1420 quarter by quarter

Quarter by quarter UA 1420 held fairly steady: 79.8% in Jul–Sep 2025, 72.2% in Oct–Dec 2025, 81.8% in Jan–Mar 2026 and 80.7% in Apr–Jun 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202591 flights79.8%
Oct–Dec 202590 flights72.2%
Jan–Mar 202690 flights81.8%
Apr–Jun 202684 flights80.7%

Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1420 ranged from 72.5% on Thursday to 82.4% on Saturday. With about 51 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why UA 1420 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 49% of the 4,215 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
49%
Carrier
32%
Extreme weather
12%
National Airspace System
8%

Extreme weather accounts for 12% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 1.9 times the usual weather exposure. The split is drawn from 4,215 delay minutes reported on UA 1420.

Cancellations sit at 1.13% against a national 1.81%, which is ordinary. Diversions add another 0.28%.

Connections and routes

What a delay on this flight costs

6.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

At 1,825 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 three other city pairs in the data, including IND to IAH (117), MAF to IAH (36) and IAD to IAH (12), but none flew often enough under UA 1420 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to PDX only.

One caution: this is a thin sample. 355 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 1420

For a booking, read UA 1420 as 78.6% on time with 1.13% cancelled over 355 flights. Those are rates from the past twelve months, not a forecast for any particular 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