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

The best bet has a stop: Alaska via San Diego (10h 15m) reaches Kailua/Kona on time 94% of the time, against 84% on the nonstop.

Nonstops (seasonal or thin)


United	DEN	KOA	7h 22m	85%	0.8%	370	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Kailua/Kona on time. Total trip = scheduled departure to arrival, layover included (Kailua/Kona is 4 h behind Denver). Layovers up to 4 hours. Pick a connection for the details.


Alaska Details →	DEN 06:00 → SAN 07:34AS 1617	1h 38m San Diego	SAN 09:12 → KOA 12:15AS 222	10h 15m	98%	94%
United Details →	DEN 06:04 → LAX 07:34UA 1093	1h 26m Los Angeles	LAX 09:00 → KOA 11:42UA 2373	9h 38m	99%	90%
United Details →	DEN 13:25 → SFO 15:09UA 1812	3h 59m San Francisco	SFO 19:08 → KOA 21:45UA 731	12h 20m	99%	89%
United Details →	DEN 11:45 → LAX 13:17UA 1013	3h 53m Los Angeles	LAX 17:10 → KOA 19:47UA 1718	12h 02m	100%	88%
Southwest Details →	DEN 05:45 → LAS 06:40WN 3106	2h 50m Las Vegas	LAS 09:30 → KOA 12:45WN 4452	11h 00m	100%	88%
United Details →	DEN 05:15 → SFO 06:53UA 2367	3h 17m San Francisco	SFO 10:10 → KOA 12:37UA 694	11h 22m	99%	86%
United Details →	DEN 12:25 → SFO 14:09UA 1450	2h 46m San Francisco	SFO 16:55 → KOA 19:31UA 1723	11h 06m	100%	83%
American Details →	DEN 07:13 → PHX 08:08AA 1404	2h 32m Phoenix	PHX 10:40 → KOA 14:06AA 663	10h 53m	96%	80%
Tight connection: often missed
United Details →	DEN 07:40 → SFO 09:18UA 2391	52m San Francisco	SFO 10:10 → KOA 12:37UA 694	8h 57m	60%	52%

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

SFO · 1h 17m · leaves 05:15 3%

LAS · 55m · leaves 07:40 16%

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.


American AA 4957 DEN 11:44 → LAX United UA 1718 LAX 17:10 → KOA Connection details →	3h 51m	12h 03m	100%	88%
United UA 384 DEN 12:00 → HNL Alaska AS 1168 HNL 18:45 → KOA Connection details →	3h 32m	11h 31m	97%	84%
Frontier F9 1747 DEN 06:45 → PHX American AA 663 PHX 10:40 → KOA Connection details →	2h 55m	11h 21m	97%	82%

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