Carrier route record
MQORD→BWI
Envoy Air · Chicago to Baltimore
- Flights
- 903
- Period
- July 2025 to June 2026
- Share of route
- 33%
- Carriers
- 8
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Envoy Air.
Envoy on ORD to BWI carries a cancellation problem, not just a delay problem: 3.8% of scheduled flights never operate, against 1.8% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a B− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 903 flights, with a median arrival 5 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate Envoy on ORD to BWI from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.4%
Arrivals under 15 minutes late, of 868 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
3.77%
National rate is 1.81%
Whole route
71.9%
Every carrier on ORD to BWI, 2,696 flights
These figures cover 903 flights between July 2025 and June 2026. Beyond the headline rate, 8.9% 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.
Carrier by carrier
Envoy against every carrier on ORD to BWI
Envoy flew 903 of the 2,696 flights on ORD to BWI, about 33% of it. Its 76.4% on time is 5 points better than the route as a whole, which runs 71.9%. Ranked by on-time rate it is number two of eight carriers on the route, where the range runs from Spirit at 77.8% to American at 57.7%. Six of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlinesthin sample | 27 | 77.8% | 60 min | 0.00% | B+ |
| Envoy Air (this page) | 903 | 76.4% | 62 min | 3.77% | B− |
| United Airlines | 1,151 | 71.1% | 61 min | 1.39% | C |
| Republic Airwaysthin sample | 274 | 70.5% | 80 min | 3.65% | C− |
| Frontier Airlinesthin sample | 150 | 65.3% | 80 min | 4.00% | C− |
| SkyWest Airlinesthin sample | 41 | 64.1% | 81 min | 2.44% | D |
| Southwest Airlinesthin sample | 124 | 63.1% | 84 min | 1.61% | D |
| American Airlinesthin sample | 26 | 57.7% | 92 min | 0.00% | D+ |
Departure window
When Envoy runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 17 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am41 flights87.5%
- 8am–11am218 flights84.1%
- 11am–2pm58 flights76.4%
- 2pm–5pm329 flights73.8%
- 5pm–8pm75 flights70.8%
- 8pm–5am182 flights71.3%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 87.5% of the time, against 70.8% for the evening window. That is 17 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 329 flights scheduled in it.
Across the year
Envoy on ORD to BWI through the year
December is the weak month at 60.7% on time, against 86.6% in October. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. November was the busiest month here, with 107 flights.
Across the week, Saturday is the strongest day at 82.7% on time and Wednesday the weakest at 71.2%. 12 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Envoy runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 43% of the 13,000 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.
- 43%Late-arriving aircraft
- 24%National Airspace System
- 18%Extreme weather
- 15%Carrier
- 0%Security
Extreme weather accounts for 18% 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 monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.9 times the usual weather exposure. The split is drawn from 12,738 reported delay minutes.
43% 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 13,000 reported delay minutes here, that single category outweighs weather by 2 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.
Cancellations run at 3.77%, against 1.81% nationally. That is about one flight in 25 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 stage length
What a delay here costs
8.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The 622 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg runs 74.7% on time across 903 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 903 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 Envoy on ORD to BWI
Put together: the delay figures matter less here than the 3.77% cancellation rate. A late arrival costs you about an hour; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 868 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to BWI, every carrier
- Envoy on BWI to ORD, the return leg
- United Airlines on ORD to BWI71.1%
- Republic Airways on ORD to BWI70.5%
- Frontier Airlines on ORD to BWI65.3%
- Southwest Airlines on ORD to BWI63.1%
- Envoy Air network-wide record
- Chicago O'Hare International (ORD) delay statistics
- Baltimore/Washington International Thurgood Marshall (BWI) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.