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 15% of the time at 6 am and 42% of the time at 9 pm.

Best connections, one ticket

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


Southwest Details →	SFO 23:40 → MDW 05:55WN 3649	2h 10m Chicago	MDW 08:05 → LGA 11:20 +1WN 2038	8h 40m	96%	91%
United Details →	SFO 23:30 → ORD 05:57UA 368	2h 03m Chicago	ORD 08:00 → LGA 11:17 +1UA 2092	8h 47m	100%	84%
Delta Details →	SFO 23:59 → ATL 07:42DL 690	3h 48m Atlanta	ATL 11:30 → LGA 13:44 +1DL 467	10h 45m	100%	83%
Delta Details →	SFO 22:59 → ATL 06:40DL 495	3h 50m Atlanta	ATL 10:30 → LGA 12:44 +1DL 371	10h 45m	100%	83%
Delta Details →	SFO 22:55 → DTW 06:30DL 335	3h 35m Detroit	DTW 10:05 → LGA 11:50 +1DL 2589	9h 55m	100%	83%
United Details →	SFO 00:50 → ORD 07:16UA 1850	2h 47m Chicago	ORD 10:03 → LGA 13:26UA 669	9h 36m	100%	80%
Delta Details →	SFO 00:35 → MSP 06:09DL 2789	3h 56m Minneapolis	MSP 10:05 → LGA 13:46DL 2764	10h 11m	99%	80%
United Details →	SFO 21:30 → IAD 05:53UA 357	2h 26m Dulles	IAD 08:19 → LGA 09:48 +1UA 6116 · flown by Mesa	9h 18m	100%	80%
Tight connection: often missed
United Details →	SFO 08:10 → IAD 16:25UA 1849	50m Dulles	IAD 17:15 → LGA 18:42UA 4077 · flown by Mesa	7h 32m	73%	48%
Southwest Details →	SFO 22:50 → BNA 05:10WN 3634	1h 20m Nashville	BNA 06:30 → LGA 09:45 +1WN 2735	7h 55m	59%	47%
Delta Details →	SFO 23:59 → ATL 07:42DL 690	48m Atlanta	ATL 08:30 → LGA 10:43 +1DL 513	7h 44m	53%	44%

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

DFW · 1h 15m · leaves 05:29 2%

DEN · 1h 14m · leaves 05:00 2%

IAH · 1h 05m · leaves 05:00 3%

Afternoon and evening

IAD · 50m · leaves 08:10 27%

BOS · 58m · leaves 12:20 42%

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 1939 SFO 21:23 → CMH American AA 4604 CMH 07:31 → LGA Connection details →	2h 16m	9h 00m	100%	87%
United UA 1815 SFO 23:59 → BNA Delta DL 5688 BNA 09:25 → LGA Connection details →	2h 48m	10h 00m	99%	87%
United UA 368 SFO 23:30 → ORD Delta DL 2252 ORD 09:35 → LGA Connection details →	3h 38m	10h 26m	100%	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