Flight number record
MQ 3499
Envoy Air · Chicago to White Plains
- Route
- ORD → HPN
- Departs
- 18:38
- Flights
- 358
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s MQ 3499, 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 3499 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 77.3%. The late ones land about an hour behind schedule. That rests on 358 flights, with a median arrival 4 minutes early.
Key figures
On time
73.5%
Arrivals under 15 minutes late, of 336 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
5.87%
National rate is 1.89%
1 hour+ late
11.3%
National rate is 8.3%
These figures cover 358 flights between September 2025 and August 2026. Beyond the headline rate, 11.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When MQ 3499 flies
MQ 3499 flies ORD to HPN without a single fixed slot. Its most common scheduled departure was 18:38, used on 54 of 358 flights, with 18:29 (47 flights) and 18:37 (45 flights) next.
- Departs 18:3854 flights15.1%
- Departs 18:2947 flights13.1%
- Departs 18:3745 flights12.6%
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 18:38 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and MQ 3499 runs 6 points better at 73.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
MQ 3499 next to ORD to HPN
Every carrier on ORD to HPN combined arrived on time 76.3% of the time across 1,561 flights, so MQ 3499 is 3 points behind it. Across its whole network Envoy Air managed 81.0%, which this flight trails by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| MQ 3499thin sample | 358 | 73.5% | 65 min | 5.87% | C− |
| All Envoy Air on ORD–HPN | 1,561 | 76.3% | 68 min | 3.78% | B− |
| All carriers on ORD–HPN | 1,561 | 76.3% | 68 min | 3.78% | B− |
| Envoy Air, whole network | 320,362 | 81.0% | 70 min | 2.19% | B |
Across the year
MQ 3499 quarter by quarter
MQ 3499 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jan–Mar 2026 at 69.5%, a swing of 27 points on roughly 72 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 202530 flights96.7%
- Oct–Dec 202589 flights70.2%
- Jan–Mar 202689 flights69.5%
- Apr–Jun 202688 flights75.0%
- Jul–Sep 202662 flights70.0%
Scale runs 60% to 100%.
By weekday, MQ 3499 did best on Monday at 80.4% on time and worst on Thursday at 66.7%. Each day rests on about 51 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late MQ 3499 runs when it is late
MQ 3499 often beats the schedule: 100 of 336 completed flights, 30%, arrived 15 minutes or more early. The 89 late arrivals split 29 under half an hour, 22 between 30 and 60 minutes, and 38 an hour or more.
- 15+ min early100 flights29.8%
- Within 15 min147 flights43.8%
- 15–29 min late29 flights8.6%
- 30–59 min late22 flights6.5%
- 1–2 hours late28 flights8.3%
- 2+ hours late10 flights3.0%
Scale runs 0% to 100%.
Share of 336 completed flights by arrival against schedule.
20 of 85 late departures made up the time and arrived on time, 24% of them. In the other direction, 24 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at HPN.
The worst days
Worst days for MQ 3499
The latest arrival of the period was on 1 December 2025, 4 hours 12 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 December 2025 | 4 hours 12 minutes | Late-arriving aircraft |
| 3 July 2026 | 4 hours 7 minutes | Carrier |
| 2 December 2025 | 4 hours 5 minutes | Late-arriving aircraft |
| 26 March 2026 | 3 hours 10 minutes | Late-arriving aircraft |
| 18 January 2026 | 2 hours 22 minutes | Carrier |
Delay causes
Why MQ 3499 runs late
Late-arriving aircraft accounts for 52% of the 5,745 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Late-arriving aircraft
- 27%National Airspace System
- 11%Carrier
- 10%Extreme weather
52% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,745 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 5,745 delay minutes reported on MQ 3499.
Cancellations run at 5.87%, against 1.89% nationally. That is roughly one flight in fifteen cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
11.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 738 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
Every one of the 358 flights under MQ 3499 in the data flew ORD to HPN. 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. 358 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 3499
For a booking, the cancellation rate is the figure to plan around on MQ 3499: 5.87% of its 358 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- ORD to HPN, every carrier and departure
- HPN to ORD, the return direction
- Envoy Air 4200 on the same route75.1%
- Envoy Air 3812 on the same route82.5%
- Chicago O'Hare International (ORD) 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
- Why the first flight of the morning is statistically safest
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.