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 → LGA flights land within a few points of 62% on time whatever the hour.

Nonstops


Southwest	DAL	LGA	3h 15m	62%	3.1%	1,536	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	DAL 06:05 → ATL 09:15DL 516	2h 15m Atlanta	ATL 11:30 → LGA 13:44DL 467	6h 39m	97%	79%
Southwest Details →	DAL 06:20 → MSY 07:45WN 1466	2h 05m New Orleans	MSY 09:50 → LGA 13:45WN 3008	6h 25m	98%	74%
Southwest Details →	DAL 06:00 → MDW 08:15WN 1355	1h 30m Chicago	MDW 09:45 → LGA 12:50WN 4044	5h 50m	100%	74%
Southwest Details →	DAL 06:05 → MCI 07:35WN 4631	3h 40m Kansas City	MCI 11:15 → LGA 15:00WN 2563	7h 55m	100%	73%
Southwest Details →	DAL 07:20 → STL 09:05WN 274	1h 55m St Louis	STL 11:00 → LGA 14:25WN 1373	6h 05m	96%	72%
Delta Details →	DAL 10:09 → ATL 13:20DL 441	2h 10m Atlanta	ATL 15:30 → LGA 17:49DL 433	6h 40m	97%	66%
Delta Details →	DAL 12:19 → ATL 15:31DL 1115	3h 29m Atlanta	ATL 19:00 → LGA 21:25DL 468	8h 06m	98%	63%
Southwest Details →	DAL 09:40 → STL 11:25WN 1411	4h 00m St Louis	STL 15:25 → LGA 18:55WN 4962	8h 15m	100%	62%
Tight connection: often missed
Southwest Details →	DAL 07:05 → BNA 08:50WN 1519	55m Nashville	BNA 09:45 → LGA 13:05WN 1966	5h 00m	70%	45%
Delta Details →	DAL 15:59 → ATL 19:14DL 512	46m Atlanta	ATL 20:00 → LGA 22:27DL 490	5h 28m	60%	36%
Southwest Details →	DAL 13:10 → DEN 14:10WN 1346	55m Denver	DEN 15:05 → LGA 20:50WN 4233	6h 40m	47%	13%

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

MCI · 1h 05m · leaves 08:35 5%

ATL · 1h 15m · leaves 06:05 6%

BNA · 55m · leaves 07:05 30%

Afternoon and evening

ATL · 46m · leaves 15:59 40%

MDW · 55m · leaves 14:05 46%

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 1261 DAL 06:00 → ATL Delta DL 467 ATL 11:30 → LGA Connection details →	2h 25m	6h 44m	98%	82%
Southwest WN 1296 DAL 06:00 → DEN United UA 2446 DEN 09:49 → LGA Connection details →	2h 49m	8h 46m	100%	82%
Southwest WN 4631 DAL 06:05 → MCI Delta DL 572 MCI 10:35 → LGA Connection details →	3h 00m	7h 28m	98%	76%

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