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 1 time in 10 at 8 am and barely half the time at 8 pm.

Nonstops


American	STL	MIA	2h 51m	88%	0.8%	729	Flying now
Southwest	STL	MIA	2h 40m	74%	0.5%	441	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	STL 05:10 → CLT 08:03AA 858	2h 58m Charlotte	CLT 11:01 → MIA 13:11AA 969	7h 00m	99%	85%
United Details →	STL 06:14 → IAH 08:31UA 6283 · flown by Mesa	3h 29m Houston	IAH 12:00 → MIA 15:47UA 410	8h 33m	99%	83%
Southwest Details →	STL 06:15 → BWI 09:18WN 3894	2h 27m Baltimore	BWI 11:45 → MIA 14:20WN 4737	7h 05m	99%	80%
Delta Details →	STL 06:00 → ATL 08:38DL 1524	2h 22m Atlanta	ATL 11:00 → MIA 13:04DL 1332	6h 04m	99%	79%
Delta Details →	STL 06:21 → MSP 07:57DL 1597	58m Minneapolis	MSP 08:55 → MIA 13:37DL 2129	6h 16m	90%	77%
American Details →	STL 06:00 → LGA 09:35AA 4669 · flown by Republic	1h 34m New York	LGA 11:09 → MIA 14:21AA 3076	7h 21m	94%	76%
United Details →	STL 06:00 → ORD 07:30UA 2805	3h 03m Chicago	ORD 10:33 → MIA 14:57UA 1620	7h 57m	97%	73%
United Details →	STL 11:10 → IAH 13:25UA 6213 · flown by Mesa	3h 25m Houston	IAH 16:50 → MIA 20:33UA 2740	8h 23m	99%	73%
Tight connection: often missed
American Details →	STL 13:14 → DFW 15:10AA 5655 · flown by PSA	1h 24m Dallas-Fort Worth	DFW 16:34 → MIA 20:35AA 3308	6h 25m	75%	38%
American Details →	STL 13:27 → ORD 14:59AA 6352 · flown by SkyWest	1h 06m Chicago	ORD 16:05 → MIA 20:26AA 2910	5h 59m	68%	24%
Frontier Details →	STL 17:06 → ATL 20:07F9 4474	48m Atlanta	ATL 20:55 → MIA 23:05F9 3442	4h 57m	48%	24%

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 15m · leaves 07:08 3%

MSP · 58m · leaves 06:21 10%

IAH · 1h 08m · leaves 08:35 11%

Afternoon and evening

MSP · 1h 11m · leaves 15:57 29%

ATL · 48m · leaves 17:06 52%

DFW · 50m · leaves 17:13 72%

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.


Southwest WN 4358 STL 05:05 → MCO American AA 1712 MCO 11:02 → MIA Connection details →	2h 37m	6h 09m	100%	83%
United UA 2805 STL 06:00 → ORD American AA 1474 ORD 10:04 → MIA Connection details →	2h 34m	7h 17m	97%	80%
Southwest WN 3899 STL 12:50 → CLE American AA 4057 CLE 19:08 → MIA Connection details →	3h 48m	8h 14m	100%	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