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 31% of the time at 8 pm.

Nonstops


United	IAD	TYS	1h 45m	79%	1.3%	1,266	Flying now
Allegiant	IAD	TYS	1h 34m	88%	1.1%	95	Not 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. Layovers up to 4 hours. Pick a connection for the details.


American Details →	IAD 06:33 → CLT 08:00AA 1216	3h 11m Charlotte	CLT 11:11 → TYS 12:34AA 5953 · flown by Piedmont	6h 01m	97%	86%
Delta Details →	IAD 06:00 → ATL 07:46DL 2127	2h 19m Atlanta	ATL 10:05 → TYS 11:09DL 1743	5h 09m	97%	84%
American Details →	IAD 09:20 → CLT 10:57AA 5219 · flown by PSA	3h 27m Charlotte	CLT 14:24 → TYS 15:42AA 5831 · flown by Piedmont	6h 22m	97%	78%
American Details →	IAD 05:03 → CLT 06:35AA 5054 · flown by PSA	2h 40m Charlotte	CLT 09:15 → TYS 10:38AA 5950 · flown by Piedmont	5h 35m	94%	77%
Delta Details →	IAD 08:27 → ATL 10:17DL 3080	3h 35m Atlanta	ATL 13:52 → TYS 14:49DL 1148	6h 22m	98%	77%
United Details →	IAD 06:10 → ORD 07:27UA 2070	3h 03m Chicago	ORD 10:30 → TYS 13:19UA 6037 · flown by SkyWest	7h 09m	100%	76%
Delta Details →	IAD 17:51 → ATL 19:54DL 1695	2h 59m Atlanta	ATL 22:53 → TYS 23:54DL 3072	6h 03m	94%	74%
Delta Details →	IAD 06:00 → DTW 07:40DL 3826 · flown by SkyWest	1h 00m Detroit	DTW 08:40 → TYS 10:22DL 5347 · flown by Endeavor	4h 26m	86%	73%
Tight connection: often missed
Delta Details →	IAD 15:02 → ATL 16:54DL 2135	51m Atlanta	ATL 17:45 → TYS 18:44DL 3042	3h 43m	68%	52%
Delta Details →	IAD 17:29 → DTW 19:07DL 1787	52m Detroit	DTW 19:59 → TYS 21:41DL 5138 · flown by Endeavor	4h 12m	71%	46%
Delta Details →	IAD 17:51 → ATL 19:54DL 1695	50m Atlanta	ATL 20:44 → TYS 21:49DL 5224 · flown by Endeavor	3h 58m	69%	45%

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

DFW · 1h 13m · leaves 06:14 11%

CLT · 1h 15m · leaves 06:33 13%

ATL · 53m · leaves 06:00 14%

Afternoon and evening

DTW · 52m · leaves 17:29 29%

ATL · 51m · leaves 15:02 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.


United UA 2739 IAD 08:15 → ATL Delta DL 1148 ATL 13:52 → TYS Connection details →	3h 38m	6h 34m	98%	77%
United UA 2081 IAD 17:17 → ATL Delta DL 3072 ATL 22:53 → TYS Connection details →	3h 37m	6h 37m	95%	75%
Frontier F9 4707 IAD 07:30 → ATL Delta DL 4724 ATL 12:17 → TYS Connection details →	2h 33m	5h 49m	91%	72%

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