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

No clear winner: Alaska’s SEA → OKC flights land within a few points of 87% on time whatever the hour.

Nonstops (seasonal or thin)


Alaska	SEA	OKC	3h 35m	87%	0.2%	425	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 2 h ahead of Seattle). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	SEA 07:15 → SLC 10:23DL 2858	3h 17m Salt Lake City	SLC 13:40 → OKC 17:03DL 3882 · flown by SkyWest	7h 50m	99%	90%
United Details →	SEA 05:00 → DEN 08:43UA 2601	1h 22m Denver	DEN 10:05 → OKC 13:01UA 5324 · flown by SkyWest	6h 01m	99%	88%
Southwest Details →	SEA 06:30 → PHX 09:15WN 3001	1h 45m Phoenix	PHX 11:00 → OKC 15:10WN 3309	6h 40m	100%	88%
United Details →	SEA 23:11 → ORD 05:18UA 747	3h 45m Chicago	ORD 09:03 → OKC 11:40 +1UA 5614 · flown by SkyWest	10h 29m	98%	87%
United Details →	SEA 07:05 → IAH 13:31UA 2135	3h 04m Houston	IAH 16:35 → OKC 18:15UA 6334 · flown by Mesa	9h 10m	99%	86%
Delta Details →	SEA 22:58 → ATL 06:45DL 409	2h 33m Atlanta	ATL 09:18 → OKC 10:29 +1DL 2490	9h 31m	100%	86%
United Details →	SEA 11:55 → IAH 18:35UA 2293	3h 00m Houston	IAH 21:35 → OKC 23:08UA 5281 · flown by SkyWest	9h 13m	100%	84%
United Details →	SEA 05:00 → IAH 11:21UA 2748	3h 14m Houston	IAH 14:35 → OKC 16:15UA 6189 · flown by Mesa	9h 15m	98%	84%
Tight connection: often missed
Southwest Details →	SEA 14:35 → DEN 18:20WN 3617	1h 20m Denver	DEN 19:40 → OKC 22:20WN 175	5h 40m	62%	20%
Southwest Details →	SEA 15:05 → DAL 21:00WN 1404	1h 10m Dallas	DAL 22:10 → OKC 23:12WN 198	6h 07m	26%	11%
Southwest Details →	SEA 17:35 → LAS 20:15WN 2267	50m Las Vegas	LAS 21:05 → OKC 01:32 +1WN 4160	5h 58m	15%	6%

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 15m · leaves 23:49 12%

Afternoon and evening

CLT · 1h 05m · leaves 13:10 21%

DEN · 1h 20m · leaves 14:35 38%

DAL · 1h 10m · leaves 15:05 74%

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.


Alaska AS 292 SEA 07:18 → SLC Delta DL 3882 SLC 13:40 → OKC Connection details →	3h 13m	7h 47m	96%	89%
Alaska AS 328 SEA 00:17 → ORD United UA 5614 ORD 09:03 → OKC Connection details →	2h 43m	9h 23m	98%	86%
Frontier F9 1178 SEA 11:03 → LAX American AA 4898 LAX 17:22 → OKC Connection details →	3h 21m	9h 23m	98%	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