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Showing Southwest only (incl. its regional partners)All airlines ×
4,908 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s barely half.

Best time to leave 7–8 am 93% arrive on time from BWI
Best airport pair BWI → PBI 79% on time, fewest cancelled (1.5%), 1,233 flights

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DCA
86
38
41
49
BWI
90
92
88
88
81
74
76
72
72
60
63
50
67
59
43
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.

No Southwest flight on this route ran 150+ times in the year.

All 18 Southwest flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
WN 4627 BWI 06:15 FLL 08:55 2h 40m 58 95% 0.0% 33 min
WN 4028 BWI 07:25 FLL 09:55 2h 30m 12 100% 0.0% –
WN 3278 BWI 08:12 MIA 10:52 2h 40m 50 80% 0.0% 48 min
WN 1041 BWI 08:15 PBI 10:50 2h 35m 57 89% 0.0% 53 min
WN 945 BWI 08:25 FLL 11:05 2h 40m 57 82% 1.8% 31 min
WN 4785 BWI 09:50 FLL 12:20 2h 30m 26 85% 0.0% 25 min
WN 1044 BWI 11:35 PBI 14:05 2h 30m 42 79% 0.0% 47 min
WN 4737 BWI 11:45 MIA 14:20 2h 35m 41 80% 0.0% 54 min
WN 1355 BWI 11:50 MIA 14:25 2h 35m 16 69% 0.0% 25 min
WN 2731 BWI 13:40 FLL 16:20 2h 40m 16 69% 0.0% 36 min
WN 4562 DCA 14:35 FLL 17:15 2h 40m 26 28% 3.8% 70 min
WN 4141 DCA 14:35 FLL 17:15 2h 40m 16 50% 0.0% 96 min
WN 947 BWI 17:00 FLL 19:45 2h 45m 41 50% 7.3% 63 min
WN 4735 BWI 18:25 FLL 21:10 2h 45m 34 53% 5.9% 68 min
WN 1898 BWI 19:30 FLL 22:18 2h 48m 16 57% 12.5% 76 min
WN 3072 BWI 20:15 FLL 22:55 2h 40m 41 50% 2.4% 93 min
WN 235 BWI 20:30 MIA 23:15 2h 45m 49 50% 6.1% 70 min
WN 1045 BWI 20:40 PBI 23:15 2h 40m 49 64% 6.1% 99 min

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
Southwest BWI PBI 2h 35m 79% 1.5% 1,233 Flying now
Southwest BWI FLL 2h 40m 77% 1.6% 2,127 Flying now
Southwest BWI MIA 2h 45m 74% 1.9% 1,183 Flying now
Southwest DCA FLL 2h 40m 61% 1.6% 365 Flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON