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 TUL → IAH flights land within a few points of 87% on time whatever the hour.

Nonstops


United	TUL	IAH	1h 48m	87%	0.9%	2,090	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Houston on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


United Details →	TUL 07:15 → ORD 09:17UA 2653	1h 08m Chicago	ORD 10:25 → IAH 13:23UA 2638	6h 08m	90%	77%
United Details →	TUL 09:50 → ORD 12:00UA 5717 · flown by SkyWest	2h 15m Chicago	ORD 14:15 → IAH 17:20UA 2451	7h 30m	100%	76%
United Details →	TUL 11:44 → DEN 12:44UA 5276 · flown by SkyWest	2h 51m Denver	DEN 15:35 → IAH 19:10UA 489	7h 26m	96%	75%
Delta Details →	TUL 06:00 → ATL 09:00DL 1259	1h 05m Atlanta	ATL 10:05 → IAH 11:18DL 1682	5h 18m	94%	74%
United Details →	TUL 17:10 → DEN 18:10UA 5914 · flown by SkyWest	2h 18m Denver	DEN 20:28 → IAH 23:59UA 2419	6h 49m	93%	73%
United Details →	TUL 09:22 → DEN 10:10UA 1029	1h 24m Denver	DEN 11:34 → IAH 15:09UA 1599	5h 47m	93%	72%
Delta Details →	TUL 16:45 → ATL 19:50DL 1186	2h 54m Atlanta	ATL 22:44 → IAH 23:56DL 1601	7h 11m	98%	72%
American Details →	TUL 05:00 → DFW 06:17AA 3988 · flown by Envoy	3h 18m Dallas-Fort Worth	DFW 09:35 → IAH 10:53AA 3591 · flown by Envoy	5h 53m	99%	68%
Tight connection: often missed
United Details →	TUL 11:44 → DEN 12:44UA 5276 · flown by SkyWest	46m Denver	DEN 13:30 → IAH 17:04UA 1829	5h 20m	72%	52%
United Details →	TUL 19:05 → DEN 20:22UA 6032 · flown by SkyWest	48m Denver	DEN 21:10 → IAH 00:41 +1UA 1253	5h 36m	66%	44%
American Details →	TUL 15:49 → DFW 17:13AA 5420 · flown by PSA	1h 23m Dallas-Fort Worth	DFW 18:36 → IAH 19:54AA 1392	4h 05m	72%	35%

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 05m · leaves 06:00 6%

DFW · 1h 08m · leaves 06:00 10%

ORD · 1h 08m · leaves 07:15 10%

Afternoon and evening

CLT · 1h 16m · leaves 13:51 23%

DFW · 1h 03m · leaves 20:20 29%

DEN · 48m · leaves 19:05 34%

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.


Delta DL 1259 TUL 06:00 → ATL United UA 425 ATL 11:37 → IAH Connection details →	2h 37m	6h 47m	96%	83%
American AA 3988 TUL 05:00 → DFW United UA 1586 DFW 09:46 → IAH Connection details →	3h 29m	6h 03m	97%	79%
Southwest WN 4051 TUL 07:35 → BNA United UA 1366 BNA 11:10 → IAH Connection details →	2h 00m	5h 48m	95%	77%

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