Sun, Oct 4 has passed, so this is the 12-month record.

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 18% of the time at 8 am and 2 times in 5 at 10 pm.

Nonstops (seasonal or thin)


United	SFO	IND	4h 25m	81%	0.2%	524	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	SFO 21:30 → IAD 05:53UA 357	2h 31m Dulles	IAD 08:24 → IND 10:13 +1UA 3561 · flown by Republic	9h 43m	100%	91%
Southwest Details →	SFO 05:00 → LAS 06:35WN 4231	2h 25m Las Vegas	LAS 09:00 → IND 15:40WN 3258	7h 40m	100%	89%
Delta Details →	SFO 23:59 → ATL 07:42DL 690	3h 23m Atlanta	ATL 11:05 → IND 12:40 +1DL 3013	9h 41m	99%	87%
United Details →	SFO 05:00 → DEN 08:35UA 1479	1h 23m Denver	DEN 09:58 → IND 14:35UA 1522	6h 35m	98%	86%
Delta Details →	SFO 22:59 → ATL 06:40DL 495	2h 19m Atlanta	ATL 08:59 → IND 10:31 +1DL 2952	8h 34m	96%	85%
American Details →	SFO 22:05 → CLT 06:11AA 2514	2h 45m Charlotte	CLT 08:56 → IND 10:35 +1AA 1944	9h 30m	98%	85%
Southwest Details →	SFO 05:30 → PHX 07:30WN 4145	55m Phoenix	PHX 08:25 → IND 14:50WN 3186	6h 20m	92%	85%
United Details →	SFO 23:59 → IAH 06:04UA 505	1h 21m Houston	IAH 07:25 → IND 10:54 +1UA 6162 · flown by Mesa	7h 55m	91%	84%
Tight connection: often missed
American Details →	SFO 11:24 → MIA 20:05AA 2565	54m Miami	MIA 20:59 → IND 23:50AA 2518	9h 26m	54%	37%
American Details →	SFO 10:25 → ORD 16:59AA 2543	51m Chicago	ORD 17:50 → IND 20:00AA 1951	6h 36m	65%	28%
American Details →	SFO 14:36 → ORD 21:26AA 2550	1h 04m Chicago	ORD 22:30 → IND 00:51 +1AA 4363 · flown by Republic	7h 15m	38%	25%

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 00m · leaves 05:00 3%

MSP · 1h 20m · leaves 06:00 4%

PHL · 1h 14m · leaves 00:59 8%

Afternoon and evening

MIA · 54m · leaves 11:24 46%

ORD · 1h 04m · leaves 14:36 62%

DEN · 1h 20m · leaves 14:35 76%

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 1815 SFO 23:59 → BNA Southwest WN 537 BNA 10:05 → IND Connection details →	3h 28m	9h 21m	99%	89%
United UA 368 SFO 23:30 → ORD American AA 843 ORD 09:30 → IND Connection details →	3h 33m	9h 10m	100%	89%
United UA 1603 SFO 21:20 → ATL Delta DL 2952 ATL 08:59 → IND Connection details →	3h 39m	10h 13m	98%	86%

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