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 1% of the time at 9 am and 2 times in 5 at 7 pm.

Nonstops


United	DEN	OKC	1h 46m	83%	0.5%	1,562	Flying now
Frontier	DEN	OKC	1h 36m	80%	0.3%	349	Flying now
Southwest	DEN	OKC	1h 35m	73%	0.7%	1,224	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 (Oklahoma City is 1 h ahead of Denver). Layovers up to 4 hours. Pick a connection for the details.


United Details →	DEN 05:00 → IAH 08:32UA 320	3h 38m Houston	IAH 12:10 → OKC 13:50UA 6180 · flown by Mesa	7h 50m	100%	90%
United Details →	DEN 10:07 → IAH 13:40UA 1129	2h 55m Houston	IAH 16:35 → OKC 18:15UA 6334 · flown by Mesa	7h 08m	100%	88%
American Details →	DEN 05:00 → DFW 08:05AA 2612	1h 25m Dallas-Fort Worth	DFW 09:30 → OKC 10:37AA 3805 · flown by Envoy	4h 37m	95%	88%
Southwest Details →	DEN 08:00 → PHX 09:05WN 3336	1h 55m Phoenix	PHX 11:00 → OKC 15:10WN 3309	6h 10m	98%	86%
United Details →	DEN 07:42 → IAH 11:15UA 1720	3h 20m Houston	IAH 14:35 → OKC 16:15UA 6189 · flown by Mesa	7h 33m	100%	85%
Southwest Details →	DEN 05:55 → MDW 09:20WN 1598	50m Chicago	MDW 10:10 → OKC 12:15WN 4114	5h 20m	90%	83%
Southwest Details →	DEN 05:45 → LAS 06:40WN 3106	1h 10m Las Vegas	LAS 07:50 → OKC 12:20WN 344	5h 35m	100%	82%
Frontier Details →	DEN 10:25 → LAS 11:29F9 1993	2h 32m Las Vegas	LAS 14:01 → OKC 18:44F9 1992	7h 19m	98%	81%
Tight connection: often missed
Delta Details →	DEN 13:15 → ATL 18:18DL 824	47m Atlanta	ATL 19:05 → OKC 20:15DL 2784	6h 04m	56%	44%
United Details →	DEN 15:01 → ORD 18:46UA 1023	59m Chicago	ORD 19:45 → OKC 22:17UA 5392 · flown by SkyWest	6h 16m	60%	41%
American Details →	DEN 15:57 → CLT 21:27AA 1735	58m Charlotte	CLT 22:25 → OKC 00:22 +1AA 768	7h 12m	52%	36%

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

IAH · 1h 14m · leaves 05:00 1%

DFW · 1h 16m · leaves 05:00 5%

MDW · 50m · leaves 05:55 10%

Afternoon and evening

ATL · 47m · leaves 13:15 44%

CLT · 58m · leaves 15:57 48%

DAL · 1h 10m · leaves 17:50 54%

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.


Frontier F9 1747 DEN 06:45 → PHX Southwest WN 3309 PHX 11:00 → OKC Connection details →	3h 15m	7h 25m	99%	87%
Southwest WN 4027 DEN 10:05 → SLC Delta DL 3882 SLC 13:40 → OKC Connection details →	1h 55m	6h 00m	92%	85%
Frontier F9 3206 DEN 07:00 → IAH United UA 6189 IAH 14:35 → OKC Connection details →	3h 53m	8h 15m	99%	84%

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