Flight number record

DL 1209

Delta Air Lines · Portland to Salt Lake City

Route: PDX → SLC
Departs: 13:45
Flights: 363
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 1209, check with Delta Air Lines.

DL 1209 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 10 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 363 flights, with a median arrival 7 minutes early.

Set against the rest of the country, DL 1209's record is 10 points better than the US average of 77.6%. That gap is worth roughly 99 fewer late arrivals for every thousand flights.

On time

87.5%

Arrivals under 15 minutes late, of 359 completed flights

Avg delay

55 min

Across delayed arrivals only, not all flights

Cancelled

1.10%

National rate is 1.81%

1 hour+ late

4.2%

National rate is 8.1%

These figures cover 363 flights between July 2025 and June 2026. The median arrival is 7 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 DL 1209 flies

DL 1209 flies PDX to SLC without a single fixed slot. Its most common scheduled departure was 13:45, used on 88 of 363 flights, with 13:20 (56 flights) and 13:39 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:4588 flights24.2%
Departs 13:2056 flights15.4%
Departs 13:3938 flights10.5%

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 13:45 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 1209 runs 9 points better at 87.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 1209 next to PDX to SLC

Every carrier on PDX to SLC combined arrived on time 88.5% of the time across 2,381 flights, so DL 1209 is about level with it. Delta flew 1,698 flights on the same city pair under all its flight numbers, including this one, and those ran 90.3% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 6 points.

DL 1209 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 1209thin sample	363	87.5%	55 min	1.10%	A
All Delta Air Lines on PDX–SLC	1,698	90.3%	63 min	1.12%	A
All carriers on PDX–SLC	2,381	88.5%	60 min	0.84%	A+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 1209 quarter by quarter

DL 1209 did not run the same all year. Its best quarter was Apr–Jun 2026 at 92.2% on time and its weakest Jul–Sep 2025 at 81.5%, a swing of 11 points on roughly 91 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 202592 flights81.5%
Oct–Dec 202590 flights84.3%
Jan–Mar 202690 flights92.0%
Apr–Jun 202691 flights92.2%

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

By weekday, DL 1209 did best on Tuesday at 96.2% on time and worst on Monday at 76.9%. Each day rests on about 52 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 1209 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 74% 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
74%
Carrier
21%
National Airspace System
5%

74% 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 74 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 DL 1209.

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 4.2% 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.

The 630 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.

DL 1209 is not only a PDX to SLC flight. It also flew SLC to PDX (363 flights, 88.6% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 363 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.

Other routes flown as DL 1209
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
SLC to PDXthin sample	363	88.6%	67 min	1.10%	A

What to do with this

Booking DL 1209

For a booking, DL 1209 has one of the better records a US domestic flight can show: 87.5% 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 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