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 75-minute layover misses 2% of the time at 9 am and 14% of the time at 6 pm.

Nonstops


United	IAH	TYS	2h 19m	83%	1.3%	1,334	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	IAH 05:40 → ATL 08:43DL 1069	1h 22m Atlanta	ATL 10:05 → TYS 11:09DL 1743	4h 29m	98%	86%
American Details →	IAH 06:01 → CLT 09:43AA 2011	1h 28m Charlotte	CLT 11:11 → TYS 12:34AA 5953 · flown by Piedmont	5h 33m	94%	83%
United Details →	IAH 07:20 → IAD 11:28UA 1549	1h 22m Dulles	IAD 12:50 → TYS 14:27UA 6110 · flown by Mesa	6h 07m	97%	79%
Delta Details →	IAH 08:05 → ATL 11:09DL 644	2h 43m Atlanta	ATL 13:52 → TYS 14:49DL 1148	5h 44m	100%	78%
Delta Details →	IAH 16:51 → ATL 20:13DL 2890	2h 40m Atlanta	ATL 22:53 → TYS 23:52DL 2081	6h 03m	94%	77%
American Details →	IAH 05:02 → DFW 06:19AA 2551	1h 32m Dallas-Fort Worth	DFW 07:51 → TYS 11:13AA 5593 · flown by PSA	5h 11m	92%	76%
Delta Details →	IAH 07:02 → ATL 10:05DL 1315	2h 12m Atlanta	ATL 12:17 → TYS 13:16DL 4724 · flown by Endeavor	5h 17m	96%	76%
United Details →	IAH 05:04 → ORD 07:59UA 1044	2h 31m Chicago	ORD 10:30 → TYS 13:19UA 6037 · flown by SkyWest	7h 15m	100%	76%
Tight connection: often missed
Delta Details →	IAH 12:13 → ATL 15:23DL 1682	53m Atlanta	ATL 16:16 → TYS 17:15DL 2571	4h 02m	67%	46%
American Details →	IAH 16:18 → DFW 17:48AA 3583 · flown by Envoy	46m Dallas-Fort Worth	DFW 18:34 → TYS 21:59AA 5453 · flown by PSA	4h 41m	59%	40%
American Details →	IAH 12:21 → PHL 16:49AA 1927	59m Philadelphia	PHL 17:48 → TYS 20:00AA 5066 · flown by PSA	6h 39m	54%	33%

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 08m · leaves 08:05 10%

DFW · 1h 17m · leaves 07:00 14%

Afternoon and evening

ATL · 53m · leaves 12:13 33%

PHL · 59m · leaves 12:21 46%

DFW · 50m · leaves 14:04 61%

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 3988 IAH 07:25 → CLT American AA 5831 CLT 14:24 → TYS Connection details →	3h 22m	7h 17m	98%	80%
United UA 1030 IAH 07:20 → ATL Delta DL 1148 ATL 13:52 → TYS Connection details →	3h 13m	6h 29m	99%	78%
United UA 1409 IAH 10:31 → DEN Frontier F9 2374 DEN 14:40 → TYS Connection details →	2h 33m	7h 59m	94%	76%

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