Flight number record
MQ 3818
Envoy Air · Harlingen to Dallas-Fort Worth
- Route
- HRL → DFW
- Departs
- 06:00
- Flights
- 257
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. When something does go wrong the average delay runs about 2.2 hours. That rests on 257 flights, with a median arrival 9 minutes early.
Set against the rest of the country, MQ 3818's record is 14 points better than the US average of 77.3%. That gap is worth roughly 141 fewer late arrivals for every thousand flights.
Key figures
On time
91.4%
Arrivals under 15 minutes late, of 255 completed flights
Avg delay
134 min
Across delayed arrivals only, not all flights
Cancelled
0.39%
National rate is 1.89%
1 hour+ late
5.1%
National rate is 8.3%
These figures cover 257 flights between September 2025 and August 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.
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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 141 of 257 flights, with 06:02 (28 flights) and 05:54 (26 flights) next.
- Departs 06:00141 flights54.9%
- Departs 06:0228 flights10.9%
- Departs 05:5426 flights10.1%
Scale runs 0% to 100%.
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 91.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
MQ 3818 next to HRL to DFW
Every carrier on HRL to DFW combined arrived on time 86.8% of the time across 1,480 flights, so MQ 3818 is 5 points ahead of it. Envoy flew 1,269 flights on the same city pair under all its flight numbers, including this one, and those ran 87.3% on time. Across its whole network Envoy Air managed 81.0%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| MQ 3818thin sample | 257 | 91.4% | 134 min | 0.39% | A+ |
| All Envoy Air on HRL–DFW | 1,269 | 87.3% | 98 min | 2.13% | A |
| All carriers on HRL–DFW | 1,480 | 86.8% | 104 min | 2.64% | A |
| Envoy Air, whole network | 320,362 | 81.0% | 70 min | 2.19% | B |
Across the year
MQ 3818 quarter by quarter
Quarter by quarter MQ 3818 held fairly steady: 90.7% in Oct–Dec 2025, 92.4% in Jan–Mar 2026 and 89.0% in Apr–Jun 2026. A spread of 3 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 20253 flights—
- Oct–Dec 202554 flights90.7%
- Jan–Mar 202681 flights92.4%
- Apr–Jun 202691 flights89.0%
- Jul–Sep 202628 flights—
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, MQ 3818 ranged from 84.2% on Monday to 94.6% on Tuesday. With about 37 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late MQ 3818 runs when it is late
When MQ 3818 is late it tends to be very late: 13 of its 22 late arrivals were an hour or more behind, and 11 were two hours or more.
- 15+ min early63 flights24.7%
- Within 15 min170 flights66.7%
- 15–29 min late6 flights2.4%
- 30–59 min late3 flights1.2%
- 1–2 hours late2 flights0.8%
- 2+ hours late11 flights4.3%
Scale runs 0% to 100%.
Share of 255 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 21 departures that left 15 minutes late or more, only 2 made it up before arrival. Only 3 left on time and still arrived late.
The worst days
Worst days for MQ 3818
The latest arrival of the period was on 10 November 2025, 6 hours 43 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across November, January, August, February and June, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 10 November 2025 | 6 hours 43 minutes | Carrier |
| 26 January 2026 | 5 hours 15 minutes | Extreme weather |
| 24 August 2026 | 4 hours 28 minutes | Late-arriving aircraft |
| 21 February 2026 | 4 hours | Carrier |
| 19 June 2026 | 3 hours 59 minutes | National Airspace System |
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 2,951 reported delay minutes.
- 31%Carrier
- 25%National Airspace System
- 23%Extreme weather
- 21%Late-arriving aircraft
Extreme weather accounts for 23% 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 3.8 times the usual weather exposure. The split is drawn from 2,951 delay minutes reported on MQ 3818.
Cancellations are rare at 0.39%, below the national 1.89% 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
5.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 2.2 hours, which a normal layover absorbs.
Every one of the 257 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. 257 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: 91.4% on time and 0.39% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- HRL to DFW, every carrier and departure
- DFW to HRL, the return direction
- Dallas/Fort Worth International (DFW) delay statistics
- Envoy Air on-time record
- Every Envoy Air flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.