Flight number record

MQ 3858

Envoy Air · Tallahassee to Miami

Route: TLH → MIA
Departs: 06:00
Flights: 361
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s MQ 3858, 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 3858 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 15 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 2.3 hours. That rests on 361 flights, with a median arrival 7 minutes early.

Set against the rest of the country, MQ 3858's record is 15 points better than the US average of 77.6%. That gap is worth roughly 151 fewer late arrivals for every thousand flights.

On time

92.7%

Arrivals under 15 minutes late, of 358 completed flights

Avg delay

138 min

Across delayed arrivals only, not all flights

Cancelled

0.55%

National rate is 1.81%

1 hour+ late

4.2%

National rate is 8.1%

These figures cover 361 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 MQ 3858 flies

MQ 3858 flies TLH to MIA without a single fixed slot. Its most common scheduled departure was 06:00, used on 127 of 361 flights, with 06:15 (69 flights) and 06:09 (44 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:00127 flights35.2%
Departs 06:1569 flights19.1%
Departs 06:0944 flights12.2%

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 3858 runs 3 points better at 92.7%. 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 3858 next to TLH to MIA

Every carrier on TLH to MIA combined arrived on time 80.8% of the time across 1,160 flights, so MQ 3858 is 12 points ahead of it. Envoy flew 1,144 flights on the same city pair under all its flight numbers, including this one, and those ran 81.1% on time. Across its whole network Envoy Air managed 80.2%, which this flight beats by 13 points.

MQ 3858 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
MQ 3858thin sample	361	92.7%	138 min	0.55%	A+
All Envoy Air on TLH–MIA	1,144	81.1%	65 min	0.44%	B+
All carriers on TLH–MIA	1,160	80.8%	67 min	0.43%	B+
Envoy Air, whole network	315,435	80.2%	67 min	2.30%	B

Across the year

MQ 3858 quarter by quarter

MQ 3858 did not run the same all year. Its best quarter was Apr–Jun 2026 at 98.9% on time and its weakest Oct–Dec 2025 at 87.9%, a swing of 11 points on roughly 90 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 flights94.6%
Oct–Dec 202592 flights87.9%
Jan–Mar 202686 flights89.4%
Apr–Jun 202691 flights98.9%

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

By weekday, MQ 3858 ranged from 88.2% on Sunday to 96.1% on Wednesday. With about 52 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why MQ 3858 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 3,597 reported delay minutes.

Carrier
39%
Extreme weather
26%
Late-arriving aircraft
23%
National Airspace System
12%

Extreme weather accounts for 26% 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 4.2 times the usual weather exposure. The split is drawn from 3,597 delay minutes reported on MQ 3858.

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 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.

Every one of the 361 flights under MQ 3858 in the data flew TLH to MIA. 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. 361 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 3858

For a booking, MQ 3858 has one of the better records a US domestic flight can show: 92.7% 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 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