Carrier route record
MQORD→TUL
Envoy Air · Chicago to Tulsa
- Flights
- 838
- Period
- July 2025 to June 2026
- Share of route
- 39%
- Carriers
- 5
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Envoy Air.
Envoy on ORD to TUL carries a cancellation problem, not just a delay problem: 3.2% 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 C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 838 flights, with a median arrival 6 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate Envoy on ORD to TUL from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
73.8%
Arrivals under 15 minutes late, of 809 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
3.22%
National rate is 1.81%
Whole route
73.1%
Every carrier on ORD to TUL, 2,154 flights
These figures cover 838 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 TUL
Envoy flew 838 of the 2,154 flights on ORD to TUL, about 39% of it. Its 73.8% on time is about level with the route as a whole at 73.1%. Ranked by on-time rate it is number two of five carriers on the route, where the range runs from Republic at 87.7% to United at 53.5%. Three 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 |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 63 | 87.7% | 74 min | 9.52% | A− |
| Envoy Air (this page) | 838 | 73.8% | 59 min | 3.22% | C− |
| SkyWest Airlines | 1,057 | 73.5% | 73 min | 1.42% | C |
| PSA Airlinesthin sample | 153 | 67.1% | 120 min | 4.58% | C− |
| United Airlinesthin sample | 43 | 53.5% | 70 min | 0.00% | F+ |
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 23 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–8am—
- 8am–11am125 flights83.9%
- 11am–2pm43 flights90.7%
- 2pm–5pm186 flights74.7%
- 5pm–8pm187 flights68.1%
- 8pm–5am297 flights69.9%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 11am–2pm slot at 90.7% on time, ahead of 5pm–8pm at 68.1%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 8pm–5am window is the busiest, with 297 flights scheduled in it.
Across the year
Envoy on ORD to TUL through the year
July is the worst month at 54.4% on time, 30 points below September, the best at 84.1%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. March was the busiest month here, with 93 flights.
Across the week, Tuesday is the strongest day at 79.3% on time and Sunday the weakest at 67.7%. 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 46% 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.
- 46%Late-arriving aircraft
- 22%National Airspace System
- 17%Extreme weather
- 15%Carrier
Extreme weather accounts for 17% 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 2.8 times the usual weather exposure. The split is drawn from 12,590 reported delay minutes.
46% 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 3 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 3.22%, against 1.81% nationally. That is about one flight in 30 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 585 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 75.9% on time across 836 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. 838 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 TUL
Put together: the delay figures matter less here than the 3.22% cancellation rate. A late arrival costs you about an hour; a cancelled flight costs you the day. Book the 11am–2pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 809 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to TUL, every carrier
- Envoy on TUL to ORD, the return leg
- SkyWest Airlines on ORD to TUL73.5%
- PSA Airlines on ORD to TUL67.1%
- Envoy Air network-wide record
- Chicago O'Hare International (ORD) 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.