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

No clear winner: airlines and hours on this route all land within a few points of 84% on time.

Nonstops (seasonal or thin)


United	IAD	JAX	2h 15m	86%	0.9%	890	Flying now
Allegiant	IAD	JAX	–	61%	0.0%	61	Not 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 →	IAD 06:00 → ATL 07:46DL 2127	1h 44m Atlanta	ATL 09:30 → JAX 10:43DL 2356	4h 43m	96%	81%
Delta Details →	IAD 11:10 → DTW 12:44DL 2884	2h 19m Detroit	DTW 15:03 → JAX 17:27DL 2994	6h 17m	100%	80%
United Details →	IAD 08:29 → EWR 09:55UA 2396	3h 06m Newark	EWR 13:01 → JAX 15:42UA 2678	7h 13m	99%	79%
Delta Details →	IAD 08:27 → ATL 10:17DL 3080	3h 40m Atlanta	ATL 13:57 → JAX 15:07DL 2990	6h 41m	98%	78%
United Details →	IAD 08:40 → IAH 10:59UA 1524	1h 11m Houston	IAH 12:10 → JAX 15:37UA 4048 · flown by Mesa	6h 57m	93%	76%
American Details →	IAD 06:33 → CLT 08:00AA 1216	3h 26m Charlotte	CLT 11:26 → JAX 12:51AA 2001	6h 18m	99%	74%
Delta Details →	IAD 10:21 → ATL 12:05DL 1324	3h 15m Atlanta	ATL 15:20 → JAX 16:33DL 2720	6h 12m	97%	71%
United Details →	IAD 10:31 → ORD 11:53UA 1252	2h 07m Chicago	ORD 14:00 → JAX 17:49UA 5807 · flown by SkyWest	7h 18m	98%	71%
Tight connection: often missed
Delta Details →	IAD 12:37 → ATL 14:34DL 1444	46m Atlanta	ATL 15:20 → JAX 16:33DL 2720	3h 56m	71%	52%
United Details →	IAD 15:39 → ORD 17:02UA 1393	1h 17m Chicago	ORD 18:19 → JAX 21:59UA 2443	6h 20m	72%	46%
Delta Details →	IAD 15:02 → ATL 16:54DL 2135	59m Atlanta	ATL 17:53 → JAX 19:13DL 2189	4h 11m	72%	45%

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

IAH · 1h 11m · leaves 08:40 7%

ORD · 1h 06m · leaves 08:15 12%

DTW · 49m · leaves 06:00 22%

Afternoon and evening

ATL · 59m · leaves 15:02 28%

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 2739 IAD 08:15 → ATL Delta DL 2990 ATL 13:57 → JAX Connection details →	3h 43m	6h 53m	98%	78%
Frontier F9 4707 IAD 07:30 → ATL Delta DL 3024 ATL 12:33 → JAX Connection details →	2h 49m	6h 13m	93%	73%
United UA 2070 IAD 06:10 → ORD American AA 4740 ORD 09:00 → JAX Connection details →	1h 33m	6h 31m	79%	70%

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