Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: Southwest’s DAL → BWI flights land within a few points of 3 in 4 on time whatever the hour.

Nonstops


Southwest	DAL	BWI	2h 50m	75%	1.9%	1,814	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Baltimore on time. Total trip = scheduled departure to arrival, layover included (Baltimore is 1 h ahead of Dallas). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	DAL 06:05 → MCI 07:35WN 4631	2h 25m Kansas City	MCI 10:00 → BWI 13:25WN 1037	6h 20m	98%	90%
Southwest Details →	DAL 06:10 → TPA 09:35WN 1415	1h 05m Tampa	TPA 10:40 → BWI 13:00WN 1016	5h 50m	98%	87%
Southwest Details →	DAL 06:05 → MCO 09:45WN 1434	1h 10m Orlando	MCO 10:55 → BWI 13:10WN 193	6h 05m	100%	85%
Southwest Details →	DAL 06:00 → ATL 09:05WN 1261	1h 10m Atlanta	ATL 10:15 → BWI 12:10WN 186	5h 10m	95%	83%
Delta Details →	DAL 06:05 → ATL 09:15DL 516	1h 55m Atlanta	ATL 11:10 → BWI 13:03DL 2711	5h 58m	96%	82%
Southwest Details →	DAL 07:00 → MSY 08:25WN 3312	3h 15m New Orleans	MSY 11:40 → BWI 15:15WN 3789	7h 15m	100%	74%
Southwest Details →	DAL 07:05 → BNA 08:50WN 1519	3h 15m Nashville	BNA 12:05 → BWI 14:55WN 1345	6h 50m	96%	73%
Delta Details →	DAL 15:59 → ATL 19:14DL 512	3h 31m Atlanta	ATL 22:45 → BWI 00:40 +1DL 2590	7h 41m	97%	73%
Tight connection: often missed
Southwest Details →	DAL 07:35 → IND 10:45WN 4531	47m Indianapolis	IND 11:32 → BWI 13:08WN 4388	4h 32m	67%	62%
Southwest Details →	DAL 15:35 → RDU 19:15WN 1389	1h 05m Raleigh/Durham	RDU 20:20 → BWI 21:30WN 3425	4h 55m	50%	34%
Southwest Details →	DAL 15:42 → SAV 19:02WN 1290	53m Savannah	SAV 19:55 → BWI 21:40WN 1290	4h 58m	40%	20%

Same layover, different day-part

How often the first flight arrives too late to connect (45 min minimum), for one-ticket layovers of 45–80 minutes.

Morning

TPA · 1h 05m · leaves 06:10 2%

ATL · 1h 10m · leaves 06:00 5%

AUS · 1h 15m · leaves 09:00 7%

Afternoon and evening

MDW · 1h 00m · leaves 14:05 40%

RDU · 1h 05m · leaves 15:35 50%

SAV · 53m · leaves 15:42 60%

Delays build through the day, so an afternoon first leg eats the layover. A short connection is fine early in the morning and a gamble later on.

Mixing airlines

One ticketMiss it and the airline rebooks you; bags go through. 45 min is enough.

Separate ticketsMiss it and you buy a new ticket. Re-check bags, clear security again: we require 90 min.


Southwest WN 1296 DAL 06:00 → DEN United UA 1362 DEN 09:46 → BWI Connection details →	2h 46m	8h 17m	100%	88%
Southwest WN 1261 DAL 06:00 → ATL Delta DL 2711 ATL 11:10 → BWI Connection details →	2h 05m	6h 03m	98%	86%
Southwest WN 4291 DAL 07:45 → BOS Delta DL 5644 BOS 15:50 → BWI Connection details →	3h 20m	8h 57m	98%	73%

Rank all connections, any airlines →

Regional partners count as the airline that sells them: SkyWest flying Delta Connection is one Delta ticket.

How these are worked out. Makes the connection: share of the last year’s flights where the first flight arrived with at least 45 minutes to spare (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled and arriving within 15 minutes. Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.

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