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

Connect in the morning. The same one-hour layover misses 5% of the time at 9 am and 1 time in 5 at 8 pm.

Nonstops (seasonal or thin)

Nonstop details →
Southwest JAX STL 2h 20m 88% 0.6% 507 Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach St Louis on time. Total trip = scheduled departure to arrival, layover included (St Louis is 1 h behind Jacksonville). Layovers up to 4 hours. Pick a connection for the details.
AmericanDetails → JAX 06:00 → MIA 07:23AA 2711 1h 00m Miami MIA 08:23 → STL 10:24AA 3954 · flown by Envoy 5h 24m 93% 88%
DeltaDetails → JAX 10:41 → ATL 11:56DL 2326 2h 13m Atlanta ATL 14:09 → STL 14:48DL 2700 5h 09m 98% 86%
UnitedDetails → JAX 07:20 → ORD 09:12UA 1733 1h 28m Chicago ORD 10:40 → STL 12:11UA 1355 5h 51m 97% 85%
UnitedDetails → JAX 06:24 → EWR 08:48UA 2673 1h 05m Newark EWR 09:53 → STL 11:41UA 3630 · flown by Republic 6h 17m 95% 83%
UnitedDetails → JAX 11:37 → IAH 13:11UA 4039 · flown by Mesa 2h 20m Houston IAH 15:31 → STL 17:42UA 6160 · flown by Mesa 7h 05m 99% 82%
DeltaDetails → JAX 05:30 → ATL 06:42DL 2722 2h 22m Atlanta ATL 09:04 → STL 09:43DL 1400 5h 16m 98% 82%
AmericanDetails → JAX 06:19 → CLT 07:46AA 1834 3h 14m Charlotte CLT 11:00 → STL 11:59AA 2717 6h 39m 99% 81%
DeltaDetails → JAX 08:20 → ATL 09:36DL 2569 2h 16m Atlanta ATL 11:52 → STL 12:34DL 566 5h 10m 98% 79%
Tight connection: often missed
AmericanDetails → JAX 19:59 → CLT 21:36AA 1991 1h 19m Charlotte CLT 22:55 → STL 23:57AA 459 4h 58m 75% 56%
AmericanDetails → JAX 13:44 → CLT 15:15AA 2001 1h 06m Charlotte CLT 16:21 → STL 17:21AA 2731 4h 36m 71% 48%
SouthwestDetails → JAX 19:02 → MDW 20:30WN 2164 1h 05m Chicago MDW 21:35 → STL 22:50WN 2905 4h 48m 70% 41%

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
EWR · 1h 05m · leaves 06:24 5%
ATL · 1h 01m · leaves 05:30 6%
MIA · 1h 00m · leaves 06:00 7%
Afternoon and evening
ORD · 1h 07m · leaves 16:55 25%
CLT · 1h 06m · leaves 13:44 29%
MDW · 1h 05m · leaves 19:02 30%

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