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 5% of the time at 9 am and 1 time in 4 at 6 pm.

Nonstops (seasonal or thin)


United	MCI	SFO	4h 05m	73%	0.8%	365	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach San Francisco on time. Total trip = scheduled departure to arrival, layover included (San Francisco is 2 h behind Kansas City). Layovers up to 4 hours. Pick a connection for the details.


United Details →	MCI 09:10 → DEN 10:17UA 280	3h 08m Denver	DEN 13:25 → SFO 15:09UA 1812	7h 59m	99%	74%
United Details →	MCI 11:33 → DEN 12:38UA 5358 · flown by SkyWest	3h 09m Denver	DEN 15:47 → SFO 17:30UA 2633	7h 57m	100%	73%
United Details →	MCI 09:34 → ORD 11:29UA 5504 · flown by SkyWest	3h 01m Chicago	ORD 14:30 → SFO 17:19UA 1577	9h 45m	100%	72%
United Details →	MCI 18:20 → IAH 20:40UA 6113 · flown by Mesa	1h 19m Houston	IAH 21:59 → SFO 00:05 +1UA 1609	7h 45m	90%	71%
Delta Details →	MCI 07:00 → ATL 10:04DL 1212	2h 52m Atlanta	ATL 12:56 → SFO 14:50DL 750	9h 54m	98%	71%
United Details →	MCI 06:16 → IAH 08:25UA 740	1h 10m Houston	IAH 09:35 → SFO 11:35UA 2358	7h 19m	95%	69%
United Details →	MCI 17:37 → ORD 19:30UA 2770	2h 05m Chicago	ORD 21:35 → SFO 00:32 +1UA 2106	8h 55m	94%	69%
Alaska Details →	MCI 06:02 → SEA 08:05AS 563	3h 37m Seattle	SEA 11:42 → SFO 14:04AS 655	10h 02m	98%	68%
Tight connection: often missed
United Details →	MCI 19:10 → DEN 20:23UA 5503 · flown by SkyWest	47m Denver	DEN 21:10 → SFO 22:56UA 2123	5h 46m	60%	36%
United Details →	MCI 17:24 → DEN 18:25UA 2123	1h 09m Denver	DEN 19:34 → SFO 21:20UA 1389	5h 56m	74%	32%
American Details →	MCI 19:53 → DFW 21:41AA 2047	1h 18m Dallas-Fort Worth	DFW 22:59 → SFO 00:43 +1AA 446	6h 50m	68%	30%

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 01m · leaves 05:38 5%

IAH · 1h 10m · leaves 06:16 5%

DEN · 1h 04m · leaves 09:10 6%

Afternoon and evening

DFW · 1h 18m · leaves 19:53 32%

DEN · 1h 05m · leaves 16:15 55%

PHX · 50m · leaves 21:15 67%

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 2050 MCI 09:45 → DFW United UA 454 DFW 15:21 → SFO Connection details →	3h 51m	9h 28m	94%	72%
Southwest WN 2546 MCI 06:55 → DEN United UA 1561 DEN 11:21 → SFO Connection details →	3h 36m	8h 09m	100%	72%
Southwest WN 2548 MCI 10:40 → DEN United UA 1812 DEN 13:25 → SFO Connection details →	2h 00m	6h 29m	93%	71%

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