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

No clear winner: United’s IAH → STT flights land within a few points of 84% on time whatever the hour.

Nonstops (seasonal or thin)


United	IAH	STT	4h 51m	84%	1.7%	173	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


American Details →	IAH 05:10 → MIA 08:51AA 1047	1h 16m Miami	MIA 10:07 → STT 12:59AA 2744	6h 49m	96%	84%
Delta Details →	IAH 05:40 → ATL 08:43DL 1069	1h 50m Atlanta	ATL 10:33 → STT 14:19DL 1902	7h 39m	98%	82%
American Details →	IAH 07:35 → MIA 11:20AA 1347	1h 48m Miami	MIA 13:08 → STT 16:00AA 2738	7h 25m	94%	78%
American Details →	IAH 05:02 → DFW 06:19AA 2551	3h 46m Dallas-Fort Worth	DFW 10:05 → STT 16:11AA 2943	10h 09m	97%	71%
Delta Details →	IAH 07:02 → ATL 10:05DL 1315	1h 30m Atlanta	ATL 11:35 → STT 15:21DL 1883	7h 19m	94%	68%
Frontier + Deltatwo ticketsDetails →	IAH 06:10 → ATL 09:41F9 1404	1h 54m Atlanta	ATL 11:35 → STT 15:20DL 1889	8h 10m	74%	51%

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

MIA · 1h 16m · leaves 05:10 4%

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