Flight number record

UA 1490

United Airlines · Portland to Chicago

Route: PDX → ORD
Departs: 23:59
Flights: 286
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1490, check with United Airlines.

UA 1490 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 286 flights, with a median arrival 17 minutes early.

Set against the rest of the country, UA 1490's record is 8 points better than the US average of 77.6%. That gap is worth roughly 76 fewer late arrivals for every thousand flights.

On time

85.2%

Arrivals under 15 minutes late, of 283 completed flights

Avg delay

59 min

Across delayed arrivals only, not all flights

Cancelled

0.70%

National rate is 1.81%

1 hour+ late

4.6%

National rate is 8.1%

These figures cover 286 flights between July 2025 and June 2026. The median arrival is 17 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 1490 flies

UA 1490 flies PDX to ORD without a single fixed slot. Its most common scheduled departure was 23:59, used on 206 of 286 flights, with 23:55 (38 flights) and 23:40 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 23:59206 flights72.0%
Departs 23:5538 flights13.3%
Departs 23:4038 flights13.3%

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 23:59 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and UA 1490 runs 15 points better at 85.2%. 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 1490 next to PDX to ORD

Every carrier on PDX to ORD combined arrived on time 77.5% of the time across 2,766 flights, so UA 1490 is 8 points ahead of it. United flew 1,393 flights on the same city pair under all its flight numbers, including this one, and those ran 80.7% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 6 points.

UA 1490 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1490thin sample	286	85.2%	59 min	0.70%	A+
All United Airlines on PDX–ORD	1,393	80.7%	68 min	0.65%	B+
All carriers on PDX–ORD	2,766	77.5%	72 min	1.05%	B
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1490 quarter by quarter

UA 1490 did not run the same all year. Its best quarter was Jan–Mar 2026 at 90.2% on time and its weakest Jul–Sep 2025 at 77.6%, a swing of 13 points on roughly 72 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 202568 flights77.6%
Oct–Dec 202589 flights84.3%
Jan–Mar 202642 flights90.2%
Apr–Jun 202687 flights89.5%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1490 did best on Wednesday at 91.4% on time and worst on Sunday at 79.1%. Each day rests on about 41 flights, so a gap of 12 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1490 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 52% of the 2,487 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
52%
Carrier
36%
National Airspace System
12%

52% 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 2,487 reported delay minutes here, that single category outweighs weather by 52 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 2,487 delay minutes reported on UA 1490.

Cancellations are rare at 0.70%, below the national 1.81% 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

Badly late arrivals are rare here: only 4.6% 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 1,739 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 LAS to IAH (24), IAH to AUS (24) and IAD to IAH (23), but none flew often enough under UA 1490 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to PDX to ORD only.

One caution: this is a thin sample. 286 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 1490

For a booking, UA 1490 has one of the better records a US domestic flight can show: 85.2% on time and 0.70% 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