Route on-time record
DCA to CMH: most on-time flights and the best time to fly
Washington (Ronald Reagan Washington National Airport) to Columbus (John Glenn Columbus International Airport). 2,056 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 3.6% were cancelled. The most reliable flight number was Republic 4627 at 7:29 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DCA → CMH
Washington to Columbus: 2,056 nonstop flights a year
On time (12 months)
76%
Cancelled
3.6%
avg delay 18 min
Best time to leave
Before 9 AM
86% on time vs 65% 3 to 6 PM
Most reliable airline
Southwest
80% 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 · Republic 4627 · sold as American Eagle, Delta Connection or United Express
7:29 AM → 9:01 AM1h 32m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Republic 4439; its record covers all of them.
91%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (41 flights, Jun 2025 to May 2026).
- Never cancelled in 41 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 65%).
- Departs outside DCA's trouble window (1 PM to 7 PM, when 63% of its 194 ground stops and delay programs started).
Limited track record · 41 flights
Find 7:29 AM flight fares Opens this date on Aviasales#2 · Republic 4700 · sold as American Eagle, Delta Connection or United Express
10:00 AM → 11:38 AM1h 36m nonstop
Local times, typical schedule. Last flown 2026-05-20.
85%
chance on time
- On time (history)
- 87%
- Cancelled
- 2.0%
- Avg arrival delay
- 9 min
- Arrived on time 87% of the time (294 flights, Jun 2025 to May 2026).
- Departs outside DCA's trouble window (1 PM to 7 PM, when 63% of its 194 ground stops and delay programs started).
Strong track record · 294 flights
Find 10:00 AM flight fares Opens this date on Aviasales#3 · Republic 4418 · sold as American Eagle, Delta Connection or United Express
7:48 AM → 9:20 AM1h 32m nonstop
Local times, typical schedule. Last flown 2026-05-20.
84%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 89% of the time (38 flights, Jun 2025 to May 2026).
- Never cancelled in 38 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 65%).
- Departs outside DCA's trouble window (1 PM to 7 PM, when 63% of its 194 ground stops and delay programs started).
Limited track record · 38 flights
Find 7:48 AM flight fares Opens this date on Aviasales#4 · Republic 4405 · sold as American Eagle, Delta Connection or United Express
10:12 AM → 11:45 AM1h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Departs outside DCA's trouble window (1 PM to 7 PM, when 63% of its 194 ground stops and delay programs started).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 10:12 AM flight fares Opens this date on Aviasales#5 · Southwest 4232
11:55 AM → 1:25 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-04-05.
79%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 83% of the time (18 flights, Jun 2025 to May 2026).
- Departs outside DCA's trouble window (1 PM to 7 PM, when 63% of its 194 ground stops and delay programs started).
- Short track record (18 flights), so its score leans on the airline's record at this hour.
Limited track record · 18 flights
Find Southwest 4232 fares Opens this date on Aviasales#6 · Southwest 1315
11:40 AM → 1:20 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 1938; its record covers all of them.
77%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 81% of the time (70 flights, Jun 2025 to May 2026).
- Never cancelled in 70 scheduled flights.
- Departs outside DCA's trouble window (1 PM to 7 PM, when 63% of its 194 ground stops and delay programs started).
- 73% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 70 flights
Find Southwest 1315 fares Opens this date on Aviasales#7 · Republic 4402 · sold as American Eagle, Delta Connection or United Express
4:59 PM → 6:45 PM1h 46m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Republic 4669; its record covers all of them.
76%
chance on time
- On time (history)
- 82%
- Cancelled
- 1.9%
- Avg arrival delay
- 13 min
- Arrived on time 82% of the time (104 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 65% on time; Before 9 AM: 86%).
- Departs inside DCA's trouble window: 63% of its 194 ground stops and delay programs started between 1 PM and 7 PM.
- 71% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 104 flights
Find 4:59 PM flight fares Opens this date on Aviasales#8 · PSA 5179 · sold as American Eagle
12:53 PM → 2:27 PM1h 34m nonstop
Local times, typical schedule. Last flown 2026-05-20.
71%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 85% of the time (40 flights, Jun 2025 to May 2026).
- Never cancelled in 40 scheduled flights.
- Departs outside DCA's trouble window (1 PM to 7 PM, when 63% of its 194 ground stops and delay programs started).
- Short track record (40 flights), so its score leans on the airline's record at this hour.
Limited track record · 40 flights
Find 12:53 PM flight fares Opens this date on Aviasales#9 · Republic 4727 · sold as American Eagle, Delta Connection or United Express
2:34 PM → 4:09 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
70%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).
- Departs inside DCA's trouble window: 63% of its 194 ground stops and delay programs started between 1 PM and 7 PM.
- 72% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 2:34 PM flight fares Opens this date on Aviasales#10 · Envoy 4042 · sold as American Eagle
7:45 PM → 9:22 PM1h 37m nonstop
Local times, typical schedule. Last flown 2026-05-19.
69%
chance on time
- On time (history)
- 75%
- Cancelled
- 4.3%
- Avg arrival delay
- 30 min
- Arrived on time 75% of the time (201 flights, Jun 2025 to May 2026).
- Cancelled 4.3% of the time (9 of 210).
- Departs outside DCA's trouble window (1 PM to 7 PM, when 63% of its 194 ground stops and delay programs started).
- 66% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 201 flights
Find 7:45 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines80%
351 flights · 81% on time as flown · 1.3% cancel
- Republic Airways (sold as American Eagle, Delta Connection or United Express)76%
908 flights · 80% on time as flown · 3.1% cancel
- Envoy Air (sold as American Eagle)69%
342 flights · 73% on time as flown · 6.0% cancel
- PSA Airlines (sold as American Eagle)67%
455 flights · 69% on time as flown · 4.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM86%
341 flights · avg delay 9 min
- 9 AM to noon84%
409 flights · avg delay 11 min
- Noon to 3 PM74%
647 flights · avg delay 19 min
- 3 to 6 PM65%
301 flights · avg delay 27 min
- 6 to 9 PM71%
213 flights · avg delay 33 min
- After 9 PM74%
145 flights · avg delay 14 min
Best day: Saturday (83%). Worst: Friday (78%).
Smarter routing
Nearby airports that run more on time
IAD → CMH 79% chance on time
Washington Dulles International Airport to John Glenn Columbus International Airport · 1,129 flights a year · 23 mi from your airports · yours: 74%
BWI → CMH 76% chance on time
Baltimore/Washington International Thurgood Marshall Airport to John Glenn Columbus International Airport · 1,056 flights a year · 30 mi from your airports · yours: 74%
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
- Late-arriving aircraft58%
- Airline (crew, maintenance, boarding)17%
- Air traffic control and airport volume15%
- Severe weather10%
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
DCA to CMH questions
- What time of day is best to fly DCA to CMH?
- Before 9 AM: 86% of flights arrived on time, against 65% 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 DCA to CMH?
- Southwest, with a season-adjusted 80% chance of operating and arriving on time over 351 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 DCA to CMH?
- July (72% 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 DCA
- CMH to DCA (return)
- DCA to BOS 71%
- DCA to ORD 74%
- DCA to ATL 78%
- DCA to LGA 67%
- DCA to MCO 74%
- DCA to BNA 77%
- DCA to MIA 75%
- DCA to DFW 77%
- DCA to IAH 81%
- DCA to DTW 76%
- DCA to CLT 78%
- DCA to MSP 78%
Live status: FAA delays and ground stops