Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: Southwest’s OKC → DAL flights land within a few points of 3 in 4 on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	OKC	DAL	1h 00m	76%	0.0%	298	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Southwest Details →	OKC 07:05 → PHX 07:25WN 4201	50m Phoenix	PHX 08:15 → DAL 12:40WN 875	5h 35m	97%	90%
Southwest Details →	OKC 07:32 → BNA 09:18WN 3107	3h 02m Nashville	BNA 12:20 → DAL 14:15WN 5046	6h 43m	100%	85%
Delta Details →	OKC 05:49 → ATL 08:59DL 1184	1h 16m Atlanta	ATL 10:15 → DAL 11:24DL 1115	5h 35m	95%	84%
Southwest Details →	OKC 07:40 → HOU 09:10WN 4767	3h 20m Houston	HOU 12:30 → DAL 13:40WN 26	6h 00m	100%	83%
Southwest Details →	OKC 05:00 → MDW 06:55WN 3121	3h 05m Chicago	MDW 10:00 → DAL 12:15WN 1487	7h 15m	100%	73%
Delta Details →	OKC 11:14 → ATL 14:19DL 2490	2h 19m Atlanta	ATL 16:38 → DAL 17:55DL 2780	6h 41m	99%	72%
United + Southwesttwo ticketsDetails →	OKC 06:05 → DEN 06:58UA 4751 · flown by SkyWest	3h 07m Denver	DEN 10:05 → DAL 13:10WN 1518	7h 05m	99%	72%
Southwest Details →	OKC 12:25 → HOU 13:55WN 4414	3h 35m Houston	HOU 17:30 → DAL 18:40WN 46	6h 15m	98%	71%
Tight connection: often missed
Delta Details →	OKC 17:07 → ATL 20:29DL 2862	46m Atlanta	ATL 21:15 → DAL 22:34DL 1104	5h 27m	74%	57%
Southwest Details →	OKC 16:15 → BNA 18:00WN 3108	58m Nashville	BNA 18:58 → DAL 20:52WN 490	4h 38m	68%	29%
Southwest Details →	OKC 15:48 → MDW 17:38WN 3123	47m Chicago	MDW 18:25 → DAL 20:40WN 2961	4h 52m	45%	24%

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 16m · leaves 05:49 5%

Afternoon and evening

ATL · 46m · leaves 17:07 26%

BNA · 58m · leaves 16:15 32%

MDW · 47m · leaves 15:48 55%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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