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 13% of the time at 8 am and 2 times in 5 at 10 pm.

Nonstops (seasonal or thin)


United	SFO	CMH	4h 52m	79%	0.6%	322	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Columbus on time. Total trip = scheduled departure to arrival, layover included (Columbus is 3 h ahead of San Francisco). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	SFO 22:55 → DTW 06:30DL 335	3h 45m Detroit	DTW 10:15 → CMH 11:27 +1DL 5810 · flown by Republic	9h 32m	100%	93%
Delta Details →	SFO 11:39 → DTW 19:14DL 361	3h 36m Detroit	DTW 22:50 → CMH 23:56DL 5634 · flown by Republic	9h 17m	99%	89%
United Details →	SFO 21:30 → IAD 05:53UA 357	2h 32m Dulles	IAD 08:25 → CMH 09:49 +1UA 4076 · flown by Mesa	9h 19m	100%	89%
American Details →	SFO 21:49 → MIA 06:34AA 1545	3h 58m Miami	MIA 10:32 → CMH 13:25 +1AA 4163 · flown by Envoy	12h 36m	100%	89%
United Details →	SFO 05:00 → DEN 08:35UA 1479	1h 00m Denver	DEN 09:35 → CMH 14:28UA 480	6h 28m	96%	88%
Delta Details →	SFO 22:59 → ATL 06:40DL 495	3h 30m Atlanta	ATL 10:10 → CMH 11:48 +1DL 1522	9h 49m	100%	87%
Alaska Details →	SFO 17:38 → SEA 19:47AS 758	2h 25m Seattle	SEA 22:12 → CMH 05:40 +1AS 280	9h 02m	97%	87%
United Details →	SFO 05:00 → IAH 10:55UA 2168	1h 20m Houston	IAH 12:15 → CMH 16:05UA 4072 · flown by Mesa	8h 05m	98%	86%
Tight connection: often missed
United Details →	SFO 00:45 → IAH 06:34UA 604	46m Houston	IAH 07:20 → CMH 11:02UA 6271 · flown by Mesa	7h 17m	63%	53%
Delta Details →	SFO 11:30 → JFK 20:20DL 668	55m New York	JFK 21:15 → CMH 23:28DL 5658 · flown by Republic	8h 59m	70%	47%
United Details →	SFO 12:00 → ORD 18:35UA 2317	1h 10m Chicago	ORD 19:45 → CMH 22:24UA 3614 · flown by Republic	7h 24m	57%	39%

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 20m · leaves 05:00 2%

DEN · 1h 00m · leaves 05:00 4%

LAS · 1h 05m · leaves 05:00 7%

Afternoon and evening

IAD · 50m · leaves 13:15 35%

DTW · 51m · leaves 14:23 40%

ORD · 1h 10m · leaves 12:00 43%

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.


United UA 1340 SFO 22:40 → BWI Southwest WN 4524 BWI 10:45 → CMH Connection details →	3h 35m	10h 30m	99%	90%
United UA 1807 SFO 23:59 → AUS Delta DL 4028 AUS 09:20 → CMH Connection details →	3h 34m	10h 20m	100%	87%
United UA 1769 SFO 22:54 → MIA American AA 4163 MIA 10:32 → CMH Connection details →	2h 53m	11h 31m	98%	87%

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