Flight number record

DL 347

Delta Air Lines · Orlando to Seattle

Route: MCO → SEA
Departs: 09:00
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 347, check with Delta Air Lines.

DL 347 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 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 365 flights, with a median arrival 9 minutes early.

Set against the rest of the country, DL 347's record is 7 points better than the US average of 77.6%. That gap is worth roughly 74 fewer late arrivals for every thousand flights.

On time

85.0%

Arrivals under 15 minutes late, of 361 completed flights

Avg delay

51 min

Across delayed arrivals only, not all flights

Cancelled

0.55%

National rate is 1.81%

1 hour+ late

2.2%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 9 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 347 flies

DL 347 flies MCO to SEA without a single fixed slot. Its most common scheduled departure was 09:00, used on 129 of 365 flights, with 09:05 (60 flights) and 08:50 (60 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:00129 flights35.3%
Departs 09:0560 flights16.4%
Departs 08:5060 flights16.4%

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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and DL 347 runs level with that at 85.0%. 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 347 next to MCO to SEA

Every carrier on MCO to SEA combined arrived on time 76.5% of the time across 1,822 flights, so DL 347 is 9 points ahead of it. Delta flew 719 flights on the same city pair under all its flight numbers, including this one, and those ran 75.2% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 3 points.

DL 347 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 347	365	85.0%	51 min	0.55%	A+
All Delta Air Lines on MCO–SEA	719	75.2%	67 min	1.53%	B
All carriers on MCO–SEA	1,822	76.5%	61 min	1.04%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 347 quarter by quarter

DL 347 did not run the same all year. Its best quarter was Apr–Jun 2026 at 93.4% on time and its weakest Jan–Mar 2026 at 75.6%, a swing of 18 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 flights88.0%
Oct–Dec 202592 flights82.6%
Jan–Mar 202690 flights75.6%
Apr–Jun 202691 flights93.4%

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

By weekday, DL 347 did best on Sunday at 94.1% on time and worst on Tuesday at 78.8%. Each day rests on about 52 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 347 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 2,760 reported delay minutes.

Late-arriving aircraft
34%
Carrier
28%
National Airspace System
27%
Extreme weather
11%

34% 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 2,760 reported delay minutes here, that single category outweighs weather by 3 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 2,760 delay minutes reported on DL 347.

Cancellations are rare at 0.55%, 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 2.2% 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.

At 2,554 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.

Every one of the 365 flights under DL 347 in the data flew MCO to SEA. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 365 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 347

For a booking, DL 347 has one of the better records a US domestic flight can show: 85.0% on time and 0.55% 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