Route on-time record

BWI to BDL: most on-time flights and the best time to fly

Baltimore (Baltimore/Washington International Thurgood Marshall Airport) to Hartford (Bradley International Airport). 1,763 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 1.9% were cancelled. The most reliable flight number was Southwest 1282 at 10:25 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

BWI → BDL

Baltimore to Hartford: 1,763 nonstop flights a year

On time (12 months)

81%

Cancelled

1.9%

avg delay 11 min

Best time to leave

Before 9 AM

95% on time vs 60% after 9 PM

Most reliable airline

Southwest

80% chance on time

Check BWI to BDL fares

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 · Southwest 1282
10:25 AM → 11:45 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06. Same departure also flew as Southwest 312; its record covers all of them.
93%
chance on time
On time (history)
100%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 100% of the time (28 flights, Jun 2025 to May 2026).
- Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 ground stops and delay programs started).
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 1282 fares Opens this date on Aviasales
#2 · Southwest 3306
6:30 AM → 7:55 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
92%
chance on time
On time (history)
97%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 97% of the time (32 flights, Jun 2025 to May 2026).
- Never cancelled in 32 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; After 9 PM: 60%).
- Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 ground stops and delay programs started).
Limited track record · 32 flights
Find Southwest 3306 fares Opens this date on Aviasales
#3 · Southwest 3845
6:50 AM → 8:10 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 94% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; After 9 PM: 60%).
- Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 ground stops and delay programs started).
Limited track record · 54 flights
Find Southwest 3845 fares Opens this date on Aviasales
#4 · Southwest 1044
10:45 AM → 12:00 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
On time (history)
95%
Cancelled
0.0%
Avg arrival delay
4 min
- Arrived on time 95% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 ground stops and delay programs started).
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find Southwest 1044 fares Opens this date on Aviasales
#5 · Southwest 3324
1:20 PM → 2:40 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-30.
85%
chance on time
On time (history)
92%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 92% of the time (24 flights, Jun 2025 to May 2026).
- Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 ground stops and delay programs started).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find Southwest 3324 fares Opens this date on Aviasales
#6 · Southwest 2550
2:05 PM → 3:20 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
80%
chance on time
On time (history)
79%
Cancelled
0.0%
Avg arrival delay
21 min
- Arrived on time 79% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Departs inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (33 flights), so its score leans on the airline's record at this hour.
Limited track record · 33 flights
Find Southwest 2550 fares Opens this date on Aviasales
#7 · Southwest 479
2:55 PM → 4:10 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-30.
80%
chance on time
On time (history)
81%
Cancelled
0.0%
Avg arrival delay
9 min
- Arrived on time 81% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Departs inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find Southwest 479 fares Opens this date on Aviasales
#8 · Southwest 2390
5:15 PM → 6:30 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
74%
chance on time
On time (history)
71%
Cancelled
0.0%
Avg arrival delay
16 min
- Arrived on time 71% of the time (28 flights, Jun 2025 to May 2026).
- Departs inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 2390 fares Opens this date on Aviasales
#9 · Southwest 1973
7:10 PM → 8:30 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
On time (history)
68%
Cancelled
0.0%
Avg arrival delay
20 min
- Arrived on time 68% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Departs inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
- 69% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 47 flights
Find Southwest 1973 fares Opens this date on Aviasales
#10 · Southwest 1048
9:50 PM → 11:10 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
69%
chance on time
On time (history)
65%
Cancelled
0.0%
Avg arrival delay
26 min
- Arrived on time 65% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's least on-time window (After 9 PM: 60% on time; Before 9 AM: 95%).
- Departs outside BWI's trouble window (2 PM to 8 PM, when 81% of its 43 ground stops and delay programs started).
Limited track record · 55 flights
Find Southwest 1048 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Southwest Airlines80%
1,763 flights · 81% on time as flown · 1.9% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM95%
358 flights · avg delay 3 min
9 AM to noon93%
357 flights · avg delay 4 min
Noon to 3 PM84%
222 flights · avg delay 8 min
3 to 6 PM75%
280 flights · avg delay 18 min
6 to 9 PM72%
292 flights · avg delay 18 min
After 9 PM60%
254 flights · avg delay 22 min

Best day: Wednesday (80%). Worst: Sunday (71%).

Smarter routing

Nearby airports that run more on time

IAD → BDL 84% chance on time
Washington Dulles International Airport to Bradley International Airport · 1,071 flights a year · 45 mi from your airports · yours: 80%
Rank flights Fares

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 aircraft46%
Airline (crew, maintenance, boarding)38%
Air traffic control and airport volume11%
Severe weather5%

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

Finding the most reliable connections from BWI to BDL…

BWI to BDL questions

What time of day is best to fly BWI to BDL?: Before 9 AM: 95% of flights arrived on time, against 60% for departures after 9 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 BWI to BDL?: Southwest, with a season-adjusted 80% chance of operating and arriving on time over 1,763 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 BWI to BDL?: July (60% on time); the best was November (84%), 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.

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