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 HSV → IAD flights land within a few points of 85% on time whatever the hour.

Nonstops


United	HSV	IAD	2h 06m	85%	1.0%	1,052	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	HSV 07:12 → ATL 09:15DL 3009	3h 02m Atlanta	ATL 12:17 → IAD 14:02DL 2135	5h 50m	99%	83%
Delta Details →	HSV 05:30 → ATL 07:32DL 2556	2h 18m Atlanta	ATL 09:50 → IAD 11:39DL 1444	5h 08m	99%	82%
United Details →	HSV 07:15 → ORD 09:33UA 4480 · flown by GoJet	1h 34m Chicago	ORD 11:07 → IAD 14:12UA 1869	5h 57m	93%	82%
American Details →	HSV 05:45 → CLT 08:22AA 3940 · flown by Envoy	2h 43m Charlotte	CLT 11:05 → IAD 12:38AA 5220 · flown by PSA	5h 53m	100%	81%
Delta Details →	HSV 09:50 → ATL 11:47DL 1708	3h 12m Atlanta	ATL 14:59 → IAD 16:47DL 1695	5h 57m	99%	74%
United Details →	HSV 09:10 → IAH 11:15UA 4269 · flown by CommuteAir	58m Houston	IAH 12:13 → IAD 16:30UA 2366	6h 20m	86%	70%
Delta Details →	HSV 18:17 → ATL 20:28DL 2182	2h 25m Atlanta	ATL 22:53 → IAD 00:44 +1DL 2549	5h 27m	96%	70%
United Details →	HSV 11:15 → IAH 13:21UA 4909 · flown by CommuteAir	1h 10m Houston	IAH 14:31 → IAD 18:50UA 1478	6h 35m	91%	69%
Tight connection: often missed
American Details →	HSV 16:34 → CLT 19:20AA 5807 · flown by Piedmont	1h 11m Charlotte	CLT 20:31 → IAD 22:05AA 5549 · flown by PSA	4h 31m	70%	37%
American Details →	HSV 14:37 → CLT 17:22AA 5806 · flown by Piedmont	48m Charlotte	CLT 18:10 → IAD 19:34AA 1450	4h 03m	69%	34%
American Details →	HSV 15:37 → DFW 17:48AA 3580 · flown by Envoy	56m Dallas-Fort Worth	DFW 18:44 → IAD 22:46AA 1132	6h 15m	68%	31%

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 · 58m · leaves 09:10 14%

Afternoon and evening

ATL · 54m · leaves 19:46 24%

CLT · 58m · leaves 19:02 32%

DFW · 56m · leaves 15:37 32%

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.


American AA 3940 HSV 05:45 → CLT United UA 4012 CLT 10:27 → IAD Connection details →	2h 05m	5h 10m	100%	85%
Delta DL 2556 HSV 05:30 → ATL United UA 632 ATL 09:25 → IAD Connection details →	1h 53m	4h 45m	99%	85%
Delta DL 1708 HSV 09:50 → ATL United UA 1831 ATL 14:41 → IAD Connection details →	2h 54m	5h 45m	98%	75%

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