Flight number record

MQ 4173

Envoy Air · Dallas-Fort Worth to Corpus Christi

Route: DFW → CRP
Departs: 21:16
Flights: 258
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s MQ 4173, 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 4173 sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 258 flights, with a median arrival 6 minutes early.

On time

74.1%

Arrivals under 15 minutes late, of 255 completed flights

Avg delay

62 min

Across delayed arrivals only, not all flights

Cancelled

1.16%

National rate is 1.81%

1 hour+ late

9.4%

National rate is 8.1%

These figures cover 258 flights between July 2025 and June 2026. Beyond the headline rate, 9.4% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When MQ 4173 flies

MQ 4173 flies DFW to CRP without a single fixed slot. Its most common scheduled departure was 21:16, used on 54 of 258 flights, with 21:30 (44 flights) and 20:43 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:1654 flights20.9%
Departs 21:3044 flights17.1%
Departs 20:4341 flights15.9%

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 21:16 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and MQ 4173 runs 4 points better at 74.1%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

MQ 4173 next to DFW to CRP

Every carrier on DFW to CRP combined arrived on time 80.0% of the time across 2,458 flights, so MQ 4173 is 6 points behind it. Envoy flew 1,765 flights on the same city pair under all its flight numbers, including this one, and those ran 82.0% on time. Across its whole network Envoy Air managed 80.2%, which this flight trails by 6 points.

MQ 4173 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
MQ 4173thin sample	258	74.1%	62 min	1.16%	C
All Envoy Air on DFW–CRP	1,765	82.0%	55 min	2.10%	B
All carriers on DFW–CRP	2,458	80.0%	70 min	3.01%	B−
Envoy Air, whole network	315,435	80.2%	67 min	2.30%	B

Across the year

MQ 4173 quarter by quarter

MQ 4173 did not run the same all year. Its best quarter was Jan–Mar 2026 at 89.7% on time and its weakest Apr–Jun 2026 at 61.8%, a swing of 28 points on roughly 65 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 202572 flights73.2%
Oct–Dec 202556 flights83.9%
Jan–Mar 202639 flights89.7%
Apr–Jun 202691 flights61.8%

Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, MQ 4173 did best on Thursday at 83.7% on time and worst on Saturday at 66.7%. Each day rests on about 37 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why MQ 4173 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 65% of the 4,079 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
65%
Carrier
17%
Extreme weather
11%
National Airspace System
8%

65% 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 4,079 reported delay minutes here, that single category outweighs weather by 6 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 4,079 delay minutes reported on MQ 4173.

Cancellations sit at 1.16% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.4% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

The same number turns up on two other city pairs in the data, including GRK to DFW (29) and DFW to GRK (14), but none flew often enough under MQ 4173 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DFW to CRP only.

One caution: this is a thin sample. 258 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 4173

For a booking, MQ 4173 is one of the weaker ways to fly DFW to CRP: 6 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.

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