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 14% of the time at 8 am and 1 time in 4 at 8 pm.

Nonstops


United	TYS	ORD	2h 01m	75%	2.7%	1,449	Flying now
American	TYS	ORD	2h 04m	67%	5.2%	1,279	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	TYS 05:45 → IAD 07:30UA 4311 · flown by CommuteAir	3h 01m Dulles	IAD 10:31 → ORD 11:53UA 1252	7h 08m	99%	91%
American Details →	TYS 05:00 → CLT 06:23AA 5954 · flown by Piedmont	1h 23m Charlotte	CLT 07:46 → ORD 09:02AA 2843	5h 02m	93%	80%
United Details →	TYS 08:48 → DEN 10:12UA 1256	1h 03m Denver	DEN 11:15 → ORD 14:55UA 2865	7h 07m	94%	77%
American Details →	TYS 06:00 → PHL 07:56AA 5620 · flown by PSA	2h 39m Philadelphia	PHL 10:35 → ORD 12:09AA 1041	7h 09m	96%	76%
American Details →	TYS 05:37 → DFW 07:06AA 994	1h 24m Dallas-Fort Worth	DFW 08:30 → ORD 11:10AA 1059	6h 33m	96%	75%
Delta Details →	TYS 05:40 → ATL 06:44DL 3015	2h 18m Atlanta	ATL 09:02 → ORD 10:13DL 1147	5h 33m	97%	74%
Delta Details →	TYS 07:15 → DTW 09:04DL 5196 · flown by Endeavor	1h 11m Detroit	DTW 10:15 → ORD 10:50DL 3673 · flown by SkyWest	4h 35m	83%	74%
American Details →	TYS 07:07 → DCA 08:57AA 5149 · flown by PSA	2h 38m Washington	DCA 11:35 → ORD 12:53AA 489	6h 46m	94%	73%
Tight connection: often missed
United Details →	TYS 07:15 → IAH 08:40UA 6298 · flown by Mesa	55m Houston	IAH 09:35 → ORD 12:29UA 2124	6h 14m	70%	60%
American Details →	TYS 18:37 → PHL 20:39AA 5952 · flown by Piedmont	53m Philadelphia	PHL 21:32 → ORD 23:30AA 3042	5h 53m	67%	34%
American Details →	TYS 16:07 → CLT 17:33AA 5831 · flown by Piedmont	53m Charlotte	CLT 18:26 → ORD 19:51AA 2488	4h 44m	64%	30%

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

DEN · 1h 03m · leaves 08:48 6%

PHL · 1h 02m · leaves 06:00 14%

DCA · 1h 16m · leaves 07:07 14%

Afternoon and evening

CLT · 52m · leaves 18:07 37%

DEN · 50m · leaves 16:56 39%

DTW · 46m · leaves 17:25 44%

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 3388 TYS 07:00 → BNA American AA 3973 BNA 09:04 → ORD Connection details →	2h 09m	5h 00m	98%	89%
American AA 994 TYS 05:37 → DFW United UA 1114 DFW 09:45 → ORD Connection details →	2h 39m	7h 49m	96%	86%
Delta DL 5523 TYS 06:45 → MSP American AA 4162 MSP 10:31 → ORD Connection details →	2h 13m	6h 31m	94%	82%

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