Flight number record

DL 2459

Delta Air Lines · Los Angeles to Portland

Route: LAX → PDX
Departs: 16:30
Flights: 294
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2459, check with Delta Air Lines.

DL 2459 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 close to two hours. That rests on 294 flights, with a median arrival 16 minutes early.

Set against the rest of the country, DL 2459's record is 8 points better than the US average of 77.6%. That gap is worth roughly 77 fewer late arrivals for every thousand flights.

On time

85.3%

Arrivals under 15 minutes late, of 292 completed flights

Avg delay

108 min

Across delayed arrivals only, not all flights

Cancelled

0.34%

National rate is 1.81%

1 hour+ late

8.2%

National rate is 8.1%

These figures cover 294 flights between July 2025 and June 2026. Beyond the headline rate, 8.2% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When DL 2459 flies

DL 2459 flies LAX to PDX without a single fixed slot. Its most common scheduled departure was 16:30, used on 66 of 294 flights, with 16:35 (45 flights) and 16:40 (43 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 16:3066 flights22.4%
Departs 16:3545 flights15.3%
Departs 16:4043 flights14.6%

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 16:30 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 2459 runs 13 points better at 85.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 2459 next to LAX to PDX

Every carrier on LAX to PDX combined arrived on time 86.4% of the time across 4,406 flights, so DL 2459 is about level with it. Delta flew 1,690 flights on the same city pair under all its flight numbers, including this one, and those ran 86.2% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 4 points.

DL 2459 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2459thin sample	294	85.3%	108 min	0.34%	A+
All Delta Air Lines on LAX–PDX	1,690	86.2%	74 min	0.89%	A+
All carriers on LAX–PDX	4,406	86.4%	68 min	0.84%	A+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2459 quarter by quarter

Quarter by quarter DL 2459 held fairly steady: 82.8% in Jul–Sep 2025, 84.8% in Oct–Dec 2025, 88.3% in Jan–Mar 2026 and 84.6% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202560 flights82.8%
Oct–Dec 202579 flights84.8%
Jan–Mar 202677 flights88.3%
Apr–Jun 202678 flights84.6%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2459 did best on Wednesday at 93.0% on time and worst on Friday at 75.0%. Each day rests on about 42 flights, so a gap of 18 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2459 runs late

One category carries most of the weight here. Carrier accounts for 84% of the 4,656 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.

Carrier
84%
Late-arriving aircraft
14%
Extreme weather
1%
National Airspace System
1%

The largest share of delay minutes, 84%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,925 of the 4,656 delay minutes reported here. The split is drawn from 4,656 delay minutes reported on DL 2459.

Cancellations are rare at 0.34%, 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

8.2% 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 close to two hours, which a normal layover absorbs.

The 833 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The same number turns up on one other city pair in the data, including PDX to LAX (240), but none flew often enough under DL 2459 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to PDX only.

One caution: this is a thin sample. 294 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 DL 2459

For a booking, DL 2459 has one of the better records a US domestic flight can show: 85.3% on time and 0.34% cancelled. That is a base rate, not a promise about any single day.

Where to go next

A flight number here means Delta Air Lines’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