Route on-time record

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

Baltimore (Baltimore/Washington International Thurgood Marshall Airport) to Raleigh/Durham (Raleigh-Durham International Airport). 1,814 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 2.4% were cancelled. The most reliable flight number was Southwest 1277 at 8:10 AM.

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

BWI → RDU

Baltimore to Raleigh/Durham: 1,814 nonstop flights a year

On time (12 months)

80%

Cancelled

2.4%

avg delay 13 min

Best time to leave

Before 9 AM

95% on time vs 68% 6 to 9 PM

Most reliable airline

Southwest

78% chance on time

Check BWI to RDU fares

Lowest nonstop fare seen in the next two months: $397 (Southwest 1682 on 2026-10-27). 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 1277
8:10 AM → 9:30 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
On time (history)
96%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 96% 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; 6 to 9 PM: 68%).
- 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 1277 fares Opens this date on Aviasales
#2 · Southwest 1769
11:50 AM → 1:00 PM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2948; its record covers all of them.
89%
chance on time
On time (history)
95%
Cancelled
1.5%
Avg arrival delay
4 min
- Arrived on time 95% of the time (66 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).
- Lands inside RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 PM.
Moderate track record · 66 flights
Find Southwest 1769 fares Opens this date on Aviasales
#3 · Southwest 3616
8:20 AM → 9:40 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
89%
chance on time
On time (history)
91%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 91% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 68%).
- 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 · 33 flights
Find Southwest 3616 fares Opens this date on Aviasales
#4 · Southwest 2356
12:05 PM → 1:20 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
80%
chance on time
On time (history)
85%
Cancelled
0.0%
Avg arrival delay
4 min
- Arrived on time 85% of the time (13 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).
- Lands inside RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 PM.
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find Southwest 2356 fares Opens this date on Aviasales
#5 · Southwest 992
3:20 PM → 4:30 PM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-27.
76%
chance on time
On time (history)
81%
Cancelled
0.0%
Avg arrival delay
11 min
- Arrived on time 81% of the time (16 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.
- Lands inside RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 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 992 fares Opens this date on Aviasales
#6 · Southwest 3218
5:15 PM → 6:30 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 1714; its record covers all of them.
76%
chance on time
On time (history)
79%
Cancelled
1.1%
Avg arrival delay
10 min
- Arrived on time 79% of the time (87 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.
Moderate track record · 87 flights
Find Southwest 3218 fares Opens this date on Aviasales
#7 · Southwest 680
8:00 PM → 9:15 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
75%
chance on time
On time (history)
72%
Cancelled
10.0%
Avg arrival delay
12 min
- Arrived on time 72% of the time (18 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 68% 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).
- Short track record (18 flights), so its score leans on the airline's record at this hour.
Limited track record · 18 flights
Find Southwest 680 fares Opens this date on Aviasales
#8 · Southwest 1664
9:55 PM → 11:10 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
On time (history)
72%
Cancelled
0.0%
Avg arrival delay
25 min
- Arrived on time 72% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 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 (47 flights), so its score leans on the airline's record at this hour.
Limited track record · 47 flights
Find Southwest 1664 fares Opens this date on Aviasales
#9 · Southwest 2679
7:30 PM → 8:50 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
On time (history)
73%
Cancelled
0.0%
Avg arrival delay
18 min
- Arrived on time 73% of the time (30 flights, Jun 2025 to May 2026).
- Never cancelled in 30 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 68% on time; Before 9 AM: 95%).
- Departs inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 30 flights
Find Southwest 2679 fares Opens this date on Aviasales
#10 · Southwest 3791
5:45 PM → 7:00 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-04-01.
70%
chance on time
On time (history)
50%
Cancelled
0.0%
Avg arrival delay
35 min
- Arrived on time 50% of the time (8 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 (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 3791 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Southwest Airlines78%
1,793 flights · 80% on time as flown · 2.3% cancel

On time by departure time

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

Before 9 AM95%
448 flights · avg delay 3 min
9 AM to noon90%
202 flights · avg delay 5 min
Noon to 3 PM79%
264 flights · avg delay 13 min
3 to 6 PM75%
347 flights · avg delay 18 min
6 to 9 PM68%
263 flights · avg delay 17 min
After 9 PM69%
290 flights · avg delay 21 min

Best day: Wednesday (81%). Worst: Sunday (71%).

Smarter routing

Nearby airports that run more on time

IAD → RDU 82% chance on time
Washington Dulles International Airport to Raleigh-Durham International Airport · 1,334 flights a year · 45 mi from your airports · yours: 78%
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 aircraft54%
Airline (crew, maintenance, boarding)26%
Air traffic control and airport volume11%
Severe weather9%

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 RDU…

BWI to RDU questions

What time of day is best to fly BWI to RDU?: Before 9 AM: 95% of flights arrived on time, against 68% for departures 6 to 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 RDU?: Southwest, with a season-adjusted 78% chance of operating and arriving on time over 1,793 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 RDU?: July (61% on time); the best was February (86%), 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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