Route on-time record
CMH to DCA: most on-time flights and the best time to fly
Columbus (John Glenn Columbus International Airport) to Washington (Ronald Reagan Washington National Airport). 2,056 nonstop flights in Jun 2025 to May 2026, 68% arrived within 15 minutes and 3.7% were cancelled. The most reliable flight number was Envoy 4035 at 6:01 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
CMH → DCA
Columbus to Washington: 2,056 nonstop flights a year
On time (12 months)
68%
Cancelled
3.7%
avg delay 24 min
Best time to leave
Before 9 AM
88% on time vs 57% 3 to 6 PM
Most reliable airline
Envoy
85% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Envoy 4035 · sold as American Eagle
6:01 AM → 7:27 AM1h 26m nonstop
Local times, typical schedule. Last flown 2026-05-20.
89%
chance on time
- On time (history)
- 88%
- Cancelled
- 1.0%
- Avg arrival delay
- 7 min
- Arrived on time 88% of the time (189 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 57%).
Moderate track record · 189 flights
Find 6:01 AM flight fares Opens this date on Aviasales#2 · Republic 4418 · sold as American Eagle, Delta Connection or United Express
9:50 AM → 11:15 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-20.
82%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 95% of the time (38 flights, Jun 2025 to May 2026).
- Never cancelled in 38 scheduled flights.
- Short track record (38 flights), so its score leans on the airline's record at this hour.
Limited track record · 38 flights
Find 9:50 AM flight fares Opens this date on Aviasales#3 · Republic 4627 · sold as American Eagle, Delta Connection or United Express
9:31 AM → 10:59 AM1h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Republic 4439; its record covers all of them.
78%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 85% of the time (41 flights, Jun 2025 to May 2026).
- Never cancelled in 41 scheduled flights.
- Short track record (41 flights), so its score leans on the airline's record at this hour.
Limited track record · 41 flights
Find 9:31 AM flight fares Opens this date on Aviasales#4 · Republic 4669 · sold as American Eagle, Delta Connection or United Express
7:05 PM → 8:39 PM1h 34m nonstop
Local times, typical schedule. Last flown 2026-05-19.
69%
chance on time
- On time (history)
- 74%
- Cancelled
- 3.3%
- Avg arrival delay
- 15 min
- Arrived on time 74% of the time (58 flights, Jun 2025 to May 2026).
- Cancelled 3.3% of the time (2 of 60).
- Short track record (58 flights), so its score leans on the airline's record at this hour.
Limited track record · 58 flights
Find 7:05 PM flight fares Opens this date on Aviasales#5 · Republic 4342 · sold as American Eagle, Delta Connection or United Express
12:06 PM → 1:32 PM1h 26m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as Republic 4700; its record covers all of them.
68%
chance on time
- On time (history)
- 72%
- Cancelled
- 2.3%
- Avg arrival delay
- 15 min
- Arrived on time 72% of the time (292 flights, Jun 2025 to May 2026).
- Lands inside DCA's trouble window: 63% of its 194 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 292 flights
Find 12:06 PM flight fares Opens this date on Aviasales#6 · Republic 4402 · sold as American Eagle, Delta Connection or United Express
7:15 PM → 8:49 PM1h 34m nonstop
Local times, typical schedule. Last flown 2026-05-31.
65%
chance on time
- On time (history)
- 67%
- Cancelled
- 0.0%
- Avg arrival delay
- 22 min
- Arrived on time 67% of the time (9 flights, Jun 2025 to May 2026).
- Short track record (9 flights), so its score leans on the airline's record at this hour.
Limited track record · 9 flights
Find 7:15 PM flight fares Opens this date on Aviasales#7 · Republic 4405 · sold as American Eagle, Delta Connection or United Express
12:15 PM → 1:43 PM1h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31.
62%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.0%
- Avg arrival delay
- 37 min
- Arrived on time 64% of the time (11 flights, Jun 2025 to May 2026).
- Lands inside DCA's trouble window: 63% of its 194 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 12:15 PM flight fares Opens this date on Aviasales#8 · Republic 4727 · sold as American Eagle, Delta Connection or United Express
4:43 PM → 6:12 PM1h 29m nonstop
Local times, typical schedule. Last flown 2026-05-31.
60%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.0%
- Avg arrival delay
- 29 min
- Arrived on time 64% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 57% on time; Before 9 AM: 88%).
- Lands inside DCA's trouble window: 63% of its 194 ground stops and delay programs started between 1 PM and 7 PM.
- 69% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 11 flights
Find 4:43 PM flight fares Opens this date on Aviasales#9 · PSA 5559 · sold as American Eagle
3:15 PM → 4:45 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-04-06.
60%
chance on time
- On time (history)
- 62%
- Cancelled
- 7.4%
- Avg arrival delay
- 35 min
- Arrived on time 62% of the time (125 flights, Jun 2025 to May 2026).
- Cancelled 7.4% of the time (10 of 135).
- Leaves in this route's least on-time window (3 to 6 PM: 57% on time; Before 9 AM: 88%).
- Lands inside DCA's trouble window: 63% of its 194 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 125 flights
Find 3:15 PM flight fares Opens this date on Aviasales#10 · Southwest 2568
5:35 PM → 6:55 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
55%
chance on time
- On time (history)
- 69%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 69% of the time (16 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 57% on time; Before 9 AM: 88%).
- Lands inside DCA's trouble window: 63% of its 194 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 2568 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Envoy Air (sold as American Eagle)85%
342 flights · 89% on time as flown · 1.5% cancel
- Republic Airways (sold as American Eagle, Delta Connection or United Express)64%
909 flights · 67% on time as flown · 4.0% cancel
- Southwest Airlines60%
351 flights · 60% on time as flown · 1.9% cancel
- PSA Airlines (sold as American Eagle)58%
454 flights · 61% on time as flown · 6.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM88%
364 flights · avg delay 7 min
- 9 AM to noon82%
349 flights · avg delay 14 min
- Noon to 3 PM61%
579 flights · avg delay 27 min
- 3 to 6 PM57%
493 flights · avg delay 39 min
- 6 to 9 PM59%
271 flights · avg delay 29 min
Best day: Saturday (81%). Worst: Friday (74%).
Smarter routing
Nearby airports that run more on time
CMH → BWI 86% chance on time
John Glenn Columbus International Airport to Baltimore/Washington International Thurgood Marshall Airport · 1,055 flights a year · 30 mi from your airports · yours: 66%
CMH → IAD 82% chance on time
John Glenn Columbus International Airport to Washington Dulles International Airport · 1,129 flights a year · 23 mi from your airports · yours: 66%
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Air traffic control and airport volume43%
- Late-arriving aircraft37%
- Airline (crew, maintenance, boarding)13%
- Severe weather7%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
CMH to DCA questions
- What time of day is best to fly CMH to DCA?
- Before 9 AM: 88% of flights arrived on time, against 57% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from CMH to DCA?
- Envoy, with a season-adjusted 85% chance of operating and arriving on time over 342 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on CMH to DCA?
- February (68% on time); the best was October (88%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from CMH
- DCA to CMH (return)
- CMH to ORD 74%
- CMH to ATL 86%
- CMH to LGA 78%
- CMH to MCO 78%
- CMH to CLT 83%
- CMH to BOS 81%
- CMH to EWR 82%
- CMH to DEN 78%
- CMH to DFW 78%
- CMH to JFK 83%
- CMH to DTW 85%
- CMH to PHL 78%
Live status: FAA delays and ground stops