Flight number record

MQ 3818

Envoy Air · Harlingen to Dallas-Fort Worth

Route: HRL → DFW
Departs: 06:00
Flights: 291
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s MQ 3818, check with Envoy Air. Envoy Air flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.

MQ 3818 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 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 2.1 hours. That rests on 291 flights, with a median arrival 10 minutes early.

Set against the rest of the country, MQ 3818's record is 14 points better than the US average of 77.6%. That gap is worth roughly 137 fewer late arrivals for every thousand flights.

On time

91.3%

Arrivals under 15 minutes late, of 288 completed flights

Avg delay

129 min

Across delayed arrivals only, not all flights

Cancelled

0.34%

National rate is 1.81%

1 hour+ late

4.9%

National rate is 8.1%

These figures cover 291 flights between July 2025 and June 2026. The median arrival is 10 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 MQ 3818 flies

MQ 3818 flies HRL to DFW without a single fixed slot. Its most common scheduled departure was 06:00, used on 139 of 291 flights, with 05:25 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:00139 flights47.8%
Departs 05:2536 flights12.4%

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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and MQ 3818 runs 2 points better at 91.3%. 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

MQ 3818 next to HRL to DFW

Every carrier on HRL to DFW combined arrived on time 85.5% of the time across 1,495 flights, so MQ 3818 is 6 points ahead of it. Envoy flew 1,291 flights on the same city pair under all its flight numbers, including this one, and those ran 85.8% on time. Across its whole network Envoy Air managed 80.2%, which this flight beats by 11 points.

MQ 3818 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
MQ 3818thin sample	291	91.3%	129 min	0.34%	A+
All Envoy Air on HRL–DFW	1,291	85.8%	81 min	2.40%	A
All carriers on HRL–DFW	1,495	85.5%	88 min	2.88%	A
Envoy Air, whole network	315,435	80.2%	67 min	2.30%	B

Across the year

MQ 3818 quarter by quarter

Quarter by quarter MQ 3818 held fairly steady: 93.8% in Jul–Sep 2025, 90.7% in Oct–Dec 2025, 92.4% in Jan–Mar 2026 and 89.0% in Apr–Jun 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202565 flights93.8%
Oct–Dec 202554 flights90.7%
Jan–Mar 202681 flights92.4%
Apr–Jun 202691 flights89.0%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, MQ 3818 did best on Friday at 95.2% on time and worst on Saturday at 82.5%. Each day rests on about 42 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why MQ 3818 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 3,224 reported delay minutes.

Carrier
41%
National Airspace System
25%
Extreme weather
22%
Late-arriving aircraft
11%

Extreme weather accounts for 22% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.5 times the usual weather exposure. The split is drawn from 3,224 delay minutes reported on MQ 3818.

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

Badly late arrivals are rare here: only 4.9% 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.

Every one of the 291 flights under MQ 3818 in the data flew HRL to DFW. 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. 291 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 MQ 3818

For a booking, MQ 3818 has one of the better records a US domestic flight can show: 91.3% 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 Envoy Air’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