Sun, Oct 4 has passed, so this is the 12-month record.

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

No clear winner: Delta’s DTW → JAX flights land within a few points of 85% on time whatever the hour.

Nonstops (seasonal or thin)


Delta	DTW	JAX	2h 24m	85%	2.4%	637	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Jacksonville on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	DTW 05:17 → ATL 07:10DL 2375	2h 20m Atlanta	ATL 09:30 → JAX 10:43DL 2356	5h 26m	97%	83%
Delta Details →	DTW 06:17 → ATL 08:12DL 1611	2h 36m Atlanta	ATL 10:48 → JAX 12:00DL 2923	5h 43m	98%	83%
Delta Details →	DTW 09:00 → MSP 09:55DL 2258	3h 02m Minneapolis	MSP 12:57 → JAX 16:54DL 2392	7h 52m	99%	83%
Delta Details →	DTW 08:25 → ATL 10:25DL 1653	3h 32m Atlanta	ATL 13:57 → JAX 15:07DL 2990	6h 43m	99%	80%
American Details →	DTW 06:45 → ORD 07:30AA 6465 · flown by SkyWest	1h 30m Chicago	ORD 09:00 → JAX 12:41AA 4740 · flown by Republic	5h 56m	91%	80%
Delta Details →	DTW 07:25 → ATL 09:26DL 965	3h 07m Atlanta	ATL 12:33 → JAX 13:43DL 3024	6h 18m	98%	77%
United Details →	DTW 07:05 → ORD 07:42UA 5553 · flown by SkyWest	3h 00m Chicago	ORD 10:42 → JAX 14:27UA 2427	7h 22m	97%	77%
United Details →	DTW 06:00 → IAD 07:34UA 4058 · flown by Mesa	58m Dulles	IAD 08:32 → JAX 10:42UA 2084	4h 42m	87%	77%
Tight connection: often missed
Delta Details →	DTW 12:25 → ATL 14:23DL 2188	57m Atlanta	ATL 15:20 → JAX 16:33DL 2720	4h 08m	68%	52%
Delta Details →	DTW 16:18 → JFK 18:29DL 2934	46m New York	JFK 19:15 → JAX 22:17DL 5123 · flown by Endeavor	5h 59m	69%	47%
American Details →	DTW 15:52 → DFW 17:50AA 1793	1h 02m Dallas-Fort Worth	DFW 18:52 → JAX 22:24AA 2263	6h 32m	69%	32%

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 · 1h 18m · leaves 06:17 6%

BWI · 55m · leaves 05:50 11%

LGA · 49m · leaves 10:05 22%

Afternoon and evening

ATL · 48m · leaves 14:57 29%

DFW · 1h 02m · leaves 15:52 31%

JFK · 46m · leaves 16:18 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.


United UA 4754 DTW 06:00 → ORD American AA 4740 ORD 09:00 → JAX Connection details →	2h 34m	6h 41m	94%	81%
Frontier F9 1263 DTW 06:10 → ATL Delta DL 2923 ATL 10:48 → JAX Connection details →	2h 17m	5h 50m	91%	76%
Delta DL 4456 DTW 07:30 → ORD United UA 2427 ORD 10:42 → JAX Connection details →	2h 43m	6h 57m	96%	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