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

The nonstop is quickest: Southwest DAL → JAX (2h 10m), on time 3 times in 5. Delta via Atlanta (4h 55m) is more reliable, 78%, but takes 2h 45m longer.

Nonstops (seasonal or thin)


Southwest	DAL	JAX	2h 10m	62%	0.3%	350	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Southwest Details →	DAL 07:35 → AUS 08:40WN 1265	2h 00m Austin	AUS 10:40 → JAX 14:10WN 320	5h 35m	95%	84%
Southwest + Deltatwo ticketsDetails →	DAL 06:00 → ATL 09:05WN 1261	1h 43m Atlanta	ATL 10:48 → JAX 12:00DL 2923	5h 00m	93%	79%
Delta Details →	DAL 06:05 → ATL 09:15DL 516	3h 18m Atlanta	ATL 12:33 → JAX 13:43DL 3024	6h 38m	98%	75%
Southwest + Deltatwo ticketsDetails →	DAL 09:30 → ATL 12:35WN 1766	2h 45m Atlanta	ATL 15:20 → JAX 16:33DL 2720	6h 03m	100%	74%
Delta Details →	DAL 15:59 → ATL 19:14DL 512	3h 34m Atlanta	ATL 22:48 → JAX 23:59DL 2276	7h 00m	97%	71%
Southwest Details →	DAL 06:00 → BWI 09:55WN 1280	1h 40m Baltimore	BWI 11:35 → JAX 13:35WN 970	6h 35m	98%	70%
Delta Details →	DAL 10:09 → ATL 13:20DL 441	3h 25m Atlanta	ATL 16:45 → JAX 17:59DL 2627	6h 50m	98%	69%
Southwest + Americantwo ticketsDetails →	DAL 06:10 → DCA 10:00WN 3351	1h 58m Washington	DCA 11:58 → JAX 14:09AA 4340 · flown by Republic	6h 59m	98%	67%
Tight connection: often missed
Delta Details →	DAL 18:40 → ATL 22:00DL 2780	48m Atlanta	ATL 22:48 → JAX 23:59DL 2276	4h 19m	69%	50%
Southwest Details →	DAL 13:00 → STL 14:45WN 1412	50m St Louis	STL 15:35 → JAX 18:35WN 3933	4h 35m	59%	40%

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

BNA · 1h 15m · leaves 07:05 16%

DEN · 1h 10m · leaves 10:45 18%

Afternoon and evening

ATL · 48m · leaves 18:40 31%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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