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

Nonstops


Southwest	LGA	DAL	3h 55m	74%	3.6%	1,537	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 New York). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	LGA 06:00 → ATL 08:15DL 550	2h 00m Atlanta	ATL 10:15 → DAL 11:24DL 1115	6h 24m	98%	85%
Delta Details →	LGA 08:00 → ATL 10:29DL 364	3h 30m Atlanta	ATL 13:59 → DAL 15:03DL 512	8h 12m	100%	81%
Southwest Details →	LGA 07:25 → BNA 08:50WN 2447	3h 30m Nashville	BNA 12:20 → DAL 14:15WN 5046	7h 50m	100%	80%
Delta Details →	LGA 10:59 → ATL 13:20DL 993	3h 18m Atlanta	ATL 16:38 → DAL 17:55DL 2780	7h 56m	99%	75%
Southwest Details →	LGA 08:30 → HOU 11:15WN 4572	3h 45m Houston	HOU 15:00 → DAL 16:10WN 36	8h 40m	100%	74%
Delta Details →	LGA 15:00 → ATL 17:53DL 974	3h 22m Atlanta	ATL 21:15 → DAL 22:34DL 1104	8h 34m	96%	74%
Southwest Details →	LGA 06:00 → MDW 07:20WN 2464	2h 40m Chicago	MDW 10:00 → DAL 12:15WN 1487	7h 15m	100%	73%
Southwest Details →	LGA 10:30 → HOU 13:20WN 1711	2h 40m Houston	HOU 16:00 → DAL 17:10WN 40	7h 40m	100%	70%
Tight connection: often missed
Southwest Details →	LGA 17:30 → BNA 19:25WN 2448	1h 10m Nashville	BNA 20:35 → DAL 22:32WN 3230	6h 00m	66%	17%
Southwest Details →	LGA 18:30 → STL 20:30WN 4895	1h 20m St Louis	STL 21:50 → DAL 23:30WN 3904	6h 00m	68%	17%
Southwest Details →	LGA 16:50 → DEN 19:30WN 2456	1h 00m Denver	DEN 20:30 → DAL 23:30WN 1523	7h 40m	41%	15%

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

ATL · 55m · leaves 06:59 7%

MDW · 1h 10m · leaves 07:25 10%

HOU · 1h 15m · leaves 08:30 17%

Afternoon and evening

MDW · 1h 20m · leaves 15:25 41%

HOU · 1h 00m · leaves 13:40 46%

DEN · 1h 00m · leaves 16:50 59%

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.


Delta DL 5688 LGA 07:10 → BNA Southwest WN 5046 BNA 12:20 → DAL Connection details →	3h 35m	8h 05m	100%	83%
American AA 4606 LGA 09:00 → ATL Delta DL 512 ATL 13:59 → DAL Connection details →	2h 23m	7h 12m	98%	79%
American AA 4628 LGA 06:09 → ATL Delta DL 1115 ATL 10:15 → DAL Connection details →	1h 32m	6h 15m	92%	78%

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