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 HOU → BWI flights land within a few points of 3 in 4 on time whatever the hour.

Nonstops


Southwest	HOU	BWI	2h 55m	75%	1.4%	1,479	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 Houston). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	HOU 07:35 → ABQ 08:40WN 1943	1h 15m Albuquerque	ABQ 09:55 → BWI 15:40WN 103	7h 05m	97%	93%
Southwest Details →	HOU 05:50 → ATL 08:50WN 2622	1h 25m Atlanta	ATL 10:15 → BWI 12:10WN 186	5h 20m	100%	88%
Southwest Details →	HOU 05:00 → MCO 08:25WN 4483	2h 30m Orlando	MCO 10:55 → BWI 13:10WN 193	7h 10m	100%	85%
Delta Details →	HOU 06:00 → ATL 09:05DL 2557	2h 05m Atlanta	ATL 11:10 → BWI 13:03DL 2711	6h 03m	97%	84%
Southwest Details →	HOU 16:35 → MCO 20:05WN 2035	2h 50m Orlando	MCO 22:55 → BWI 01:15 +1WN 160	7h 40m	97%	76%
Southwest Details →	HOU 13:20 → STL 15:20WN 4642	2h 00m St Louis	STL 17:20 → BWI 20:25WN 793	6h 05m	100%	76%
Southwest Details →	HOU 09:50 → IND 13:05WN 1988	3h 35m Indianapolis	IND 16:40 → BWI 18:25WN 4536	7h 35m	100%	76%
Southwest Details →	HOU 11:15 → SDF 14:25WN 2077	2h 40m Louisville	SDF 17:05 → BWI 18:45WN 4209	6h 30m	100%	75%
Tight connection: often missed
Southwest Details →	HOU 15:05 → MCI 17:00WN 2029	1h 05m Kansas City	MCI 18:05 → BWI 21:35WN 1399	5h 30m	47%	25%
Southwest Details →	HOU 17:40 → BNA 19:35WN 1957	55m Nashville	BNA 20:30 → BWI 23:15WN 468	4h 35m	42%	13%
Southwest Details →	HOU 14:40 → TPA 17:55WN 3709	50m Tampa	TPA 18:45 → BWI 21:15WN 928	5h 35m	24%	10%

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

DEN · 1h 10m · leaves 08:15 7%

MCO · 50m · leaves 05:00 7%

DAL · 1h 05m · leaves 09:30 11%

Afternoon and evening

LAS · 1h 10m · leaves 14:10 14%

PHX · 1h 20m · leaves 14:25 24%

TPA · 50m · leaves 14:40 76%

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 1970 HOU 05:30 → DEN United UA 1362 DEN 09:46 → BWI Connection details →	2h 51m	8h 47m	100%	88%
Southwest WN 2622 HOU 05:50 → ATL Delta DL 2711 ATL 11:10 → BWI Connection details →	2h 20m	6h 13m	100%	88%
Southwest WN 1947 HOU 09:45 → ATL Delta DL 2928 ATL 16:27 → BWI Connection details →	3h 39m	7h 36m	100%	69%

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