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 PIT → DAL flights land within a few points of 82% on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	PIT	DAL	2h 50m	82%	0.5%	365	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	PIT 05:50 → BWI 07:00WN 4417	2h 35m Baltimore	BWI 09:35 → DAL 11:45WN 931	6h 55m	100%	88%
Delta Details →	PIT 05:45 → ATL 07:25DL 1504	2h 50m Atlanta	ATL 10:15 → DAL 11:24DL 1115	6h 39m	99%	87%
Southwest Details →	PIT 05:30 → TPA 07:50WN 4929	1h 10m Tampa	TPA 09:00 → DAL 10:30WN 1327	6h 00m	96%	83%
Delta Details →	PIT 10:10 → ATL 12:00DL 1380	1h 59m Atlanta	ATL 13:59 → DAL 15:03DL 512	6h 02m	98%	80%
Delta Details →	PIT 16:55 → ATL 18:48DL 1353	2h 27m Atlanta	ATL 21:15 → DAL 22:34DL 1104	6h 39m	96%	75%
Delta Details →	PIT 11:50 → ATL 13:35DL 1363	3h 03m Atlanta	ATL 16:38 → DAL 17:55DL 2780	7h 05m	99%	75%
Southwest Details →	PIT 05:10 → MCO 07:30WN 3374	1h 55m Orlando	MCO 09:25 → DAL 11:00WN 167	6h 50m	100%	73%
Southwest Details →	PIT 05:32 → DEN 06:55WN 3368	1h 50m Denver	DEN 08:45 → DAL 11:40WN 1360	7h 08m	98%	71%
Tight connection: often missed
Southwest Details →	PIT 13:45 → BNA 14:20WN 3362	1h 05m Nashville	BNA 15:25 → DAL 17:20WN 489	4h 35m	68%	35%
Southwest Details →	PIT 17:50 → BWI 19:00WN 3033	1h 00m Baltimore	BWI 20:00 → DAL 22:10WN 693	5h 20m	48%	18%
Southwest Details →	PIT 20:15 → STL 21:00WN 3387	50m St Louis	STL 21:50 → DAL 23:30WN 3904	4h 15m	38%	11%

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

BWI · 1h 15m · leaves 05:50 0%

TPA · 1h 10m · leaves 05:30 4%

BNA · 1h 00m · leaves 06:30 11%

Afternoon and evening

ATL · 59m · leaves 18:20 15%

STL · 50m · leaves 20:15 62%

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 3359 PIT 12:25 → ATL Delta DL 2780 ATL 16:38 → DAL Connection details →	2h 28m	6h 30m	100%	77%
Delta DL 5753 PIT 06:05 → LGA Southwest WN 2451 LGA 09:35 → DAL Connection details →	2h 01m	7h 10m	97%	72%
American AA 349 PIT 05:03 → CLT Southwest WN 148 CLT 10:35 → DAL Connection details →	4h 00m	8h 02m	97%	68%

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