Carrier route record
YXORD→BWI
Republic Airways · Chicago to Baltimore
- Flights
- 336
- Period
- September 2025 to August 2026
- Share of route
- 13%
- Carriers
- 8
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Republic Airways.
Republic on ORD to BWI sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 336 flights. The strongest carrier on the route with a full sample, Envoy Air, flew 841 at 77.3% on time.
The national on-time rate over the same period is 77.3%, so Republic on ORD to BWI runs 8 points behind the country as a whole. Across a thousand flights that is about 77 extra late arrivals.
Key figures
On time
69.6%
Arrivals under 15 minutes late, of 316 completed flights
Avg delay
89 min
Across delayed arrivals only, not all flights
Cancelled
5.65%
National rate is 1.89%
Whole route
72.3%
Every carrier on ORD to BWI, 2,679 flights
These figures cover 336 flights between September 2025 and August 2026. Beyond the headline rate, 14.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Republic against every carrier on ORD to BWI
Republic flew 336 of the 2,679 flights on ORD to BWI, about 13% of it. Its 69.6% on time is 3 points worse than the route as a whole, which runs 72.3%. Ranked by on-time rate it is number five of eight carriers on the route, where the range runs from Spirit at 100.0% to American at 57.7%. Five of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Envoy Air arrives on time 77.3% of the time; United Airlines manages 70.3%. Sample sizes sit next to every figure, because a two-point gap across 1,257 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlinesthin sample | 9 | 100.0% | — | 0.00% | A+ |
| Southwest Airlinesthin sample | 62 | 80.6% | 53 min | 0.00% | B+ |
| Envoy Air | 841 | 77.3% | 63 min | 3.80% | B− |
| United Airlines | 1,257 | 70.3% | 65 min | 1.59% | C |
| Republic Airways (this page)thin sample | 336 | 69.6% | 89 min | 5.65% | C− |
| SkyWest Airlinesthin sample | 16 | 68.8% | 57 min | 0.00% | C+ |
| Frontier Airlinesthin sample | 132 | 64.3% | 92 min | 4.55% | D− |
| American Airlinesthin sample | 26 | 57.7% | 92 min | 0.00% | D+ |
Envoy Air cancels 3.8% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
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Departure window
When Republic runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 25 points, against 7 points between the best and worst carrier.
- 5am–8am—
- 8am–11am62 flights87.1%
- 11am–2pm12 flights—
- 2pm–5pm76 flights62.1%
- 5pm–8pm43 flights64.1%
- 8pm–5am143 flights66.4%
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 87.1% of the time, against 62.1% for the afternoon window. That is 25 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 143 flights scheduled in it.
Across the year
Republic on ORD to BWI through the year
- Oct–Dec 202517 flights—
- Jan–Mar 202682 flights68.4%
- Apr–Jun 2026168 flights73.2%
- Jul–Sep 202669 flights66.1%
Scale runs 60% to 80%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 69.6% on time across 336 flights.
Quarter by quarter Republic on ORD to BWI held fairly steady: 68.4% in Jan–Mar 2026, 73.2% in Apr–Jun 2026 and 66.1% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
Across the week, Saturday is the strongest day at 85.7% on time and Wednesday the weakest at 55.8%, a spread of 30 points.
Arrival by arrival
How late Republic on ORD to BWI runs when it is late
Republic on ORD to BWI often beats the schedule: 108 of 316 completed flights, 34%, arrived 15 minutes or more early. The 96 late arrivals split 23 under half an hour, 27 between 30 and 60 minutes, and 46 an hour or more.
- 15+ min early108 flights34.2%
- Within 15 min112 flights35.4%
- 15–29 min late23 flights7.3%
- 30–59 min late27 flights8.5%
- 1–2 hours late32 flights10.1%
- 2+ hours late14 flights4.4%
Scale runs 0% to 100%.
Share of 316 completed flights by arrival against schedule.
20 of 100 late departures made up the time and arrived on time, 20% of them. In the other direction, 16 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 BWI.
The worst days
Worst days for Republic on ORD to BWI
The latest arrival of the period was on 15 July 2026, 12 hours 44 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as extreme weather.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 July 2026 | 12 hours 44 minutes | Late-arriving aircraft |
| 14 April 2026 | 11 hours 36 minutes | Extreme weather |
| 4 August 2026 | 11 hours 14 minutes | Extreme weather |
| 8 June 2026 | 3 hours 50 minutes | Extreme weather |
| 17 April 2026 | 3 hours 33 minutes | National Airspace System |
Delay causes
Why Republic runs late on this route
Late-arriving aircraft accounts for 53% of the 8,492 delay minutes carriers reported here, and the remaining four split what is left.
- 53%Late-arriving aircraft
- 23%Extreme weather
- 13%National Airspace System
- 11%Carrier
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 monthly strip above is 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 8,492 reported delay minutes.
53% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 8,492 reported delay minutes here, that single category outweighs weather by 2 to one.
Cancellations run at 5.65%, against 1.89% nationally. That is roughly one flight in twenty 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
14.6% 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 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.
The return leg is a different operation and performs like one: it runs 83.0% on time across 336 flights, 13 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 13 points of difference.
One caution: this is a thin sample. 336 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 Republic on ORD to BWI
Put together: the delay figures matter less here than the 5.65% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 316 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to BWI, every carrier
- Republic on BWI to ORD, the return leg
- Envoy Air on ORD to BWI77.3%
- United Airlines on ORD to BWI70.3%
- Frontier Airlines on ORD to BWI64.3%
- Republic Airways 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.