Flight number record

DL 354

Delta Air Lines · Raleigh to Seattle

Route: RDU → SEA
Departs: 07:11
Flights: 348
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 354, check with Delta Air Lines.

DL 354 lands a B, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about 50 minutes on average. That is a workable record, not a spotless one. That rests on 348 flights, with a median arrival 7 minutes early.

Set against the rest of the country, DL 354's record is 6 points better than the US average of 77.6%. That gap is worth roughly 62 fewer late arrivals for every thousand flights.

On time

83.8%

Arrivals under 15 minutes late, of 340 completed flights

Avg delay

51 min

Across delayed arrivals only, not all flights

Cancelled

1.15%

National rate is 1.81%

1 hour+ late

4.4%

National rate is 8.1%

These figures cover 348 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 354 flies

DL 354 flies RDU to SEA without a single fixed slot. Its most common scheduled departure was 07:11, used on 61 of 348 flights, with 07:36 (58 flights) and 07:15 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:1161 flights17.5%
Departs 07:3658 flights16.7%
Departs 07:1538 flights10.9%

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 07:11 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 354 runs 6 points worse at 83.8%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 354 next to RDU to SEA

Every carrier on RDU to SEA combined arrived on time 75.9% of the time across 919 flights, so DL 354 is 8 points ahead of it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 2 points.

DL 354 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 354thin sample	348	83.8%	51 min	1.15%	B
All Delta Air Lines on RDU–SEAthin sample	364	83.1%	49 min	1.37%	B
All carriers on RDU–SEA	919	75.9%	47 min	1.52%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 354 quarter by quarter

DL 354 did not run the same all year. Its best quarter was Jul–Sep 2025 at 95.7% on time and its weakest Jan–Mar 2026 at 75.0%, a swing of 21 points on roughly 87 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 flights95.7%
Oct–Dec 202579 flights79.5%
Jan–Mar 202686 flights75.0%
Apr–Jun 202691 flights83.3%

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 354 did best on Saturday at 89.4% on time and worst on Monday at 70.0%. Each day rests on about 50 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 354 runs late

One category carries most of the weight here. Carrier accounts for 52% of the 2,799 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
52%
National Airspace System
43%
Late-arriving aircraft
3%
Extreme weather
1%

43% 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 1,206 minutes out of 2,799, against a national NAS share of 21%. The split is drawn from 2,799 delay minutes reported on DL 354.

Cancellations sit at 1.15% against a national 1.81%, which is ordinary. Diversions add another 1.15%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.4% 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 2,354 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 ICT to ATL (12), ATL to ICT (12) and PBI to ATL (4), but none flew often enough under DL 354 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to RDU to SEA only.

One caution: this is a thin sample. 348 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 354

For a booking, read DL 354 as 83.8% on time with 1.15% cancelled over 348 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 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