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 IAH → OKC flights land within a few points of 84% on time whatever the hour.

Nonstops


United	IAH	OKC	1h 37m	84%	1.0%	2,604	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	IAH 05:15 → DEN 06:47UA 1874	1h 13m Denver	DEN 08:00 → OKC 10:49UA 6029 · flown by SkyWest	5h 34m	97%	93%
United Details →	IAH 06:30 → DEN 08:02UA 2643	2h 03m Denver	DEN 10:05 → OKC 13:01UA 5324 · flown by SkyWest	6h 31m	100%	89%
United Details →	IAH 05:04 → ORD 07:59UA 1044	1h 04m Chicago	ORD 09:03 → OKC 11:40UA 5614 · flown by SkyWest	6h 36m	98%	87%
American Details →	IAH 05:02 → DFW 06:19AA 2551	3h 11m Dallas-Fort Worth	DFW 09:30 → OKC 10:37AA 3805 · flown by Envoy	5h 35m	96%	85%
United Details →	IAH 08:05 → ORD 11:01UA 1617	1h 44m Chicago	ORD 12:45 → OKC 15:17UA 5999 · flown by SkyWest	7h 12m	97%	80%
Delta Details →	IAH 05:40 → ATL 08:43DL 1069	2h 21m Atlanta	ATL 11:04 → OKC 12:11DL 2020	6h 33m	99%	79%
American Details →	IAH 06:01 → CLT 09:43AA 2011	1h 27m Charlotte	CLT 11:10 → OKC 12:57AA 2220	6h 53m	94%	78%
American Details →	IAH 06:02 → DFW 07:28AA 700	3h 17m Dallas-Fort Worth	DFW 10:45 → OKC 11:54AA 3731 · flown by Envoy	5h 50m	96%	74%
Tight connection: often missed
Delta Details →	IAH 14:35 → MSP 17:26DL 2678	54m Minneapolis	MSP 18:20 → OKC 20:31DL 3791 · flown by SkyWest	5h 56m	58%	44%
American Details →	IAH 16:18 → DFW 17:48AA 3583 · flown by Envoy	46m Dallas-Fort Worth	DFW 18:34 → OKC 19:39AA 3727 · flown by Envoy	3h 22m	59%	39%
American Details →	IAH 18:53 → DFW 20:25AA 1929	1h 04m Dallas-Fort Worth	DFW 21:29 → OKC 22:33AA 1458	3h 40m	25%	13%

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

ORD · 1h 04m · leaves 05:04 2%

DEN · 1h 13m · leaves 05:15 3%

ATL · 59m · leaves 07:02 12%

Afternoon and evening

ATL · 49m · leaves 18:34 35%

MSP · 54m · leaves 14:35 42%

DFW · 1h 04m · leaves 18:53 75%

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 2816 IAH 08:30 → DEN Frontier F9 1928 DEN 12:28 → OKC Connection details →	2h 23m	6h 34m	100%	82%
Frontier F9 3229 IAH 06:30 → DEN United UA 5324 DEN 10:05 → OKC Connection details →	1h 59m	6h 31m	92%	82%
United UA 2643 IAH 06:30 → DEN Southwest WN 1652 DEN 10:40 → OKC Connection details →	2h 38m	6h 45m	99%	79%

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