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 1 time in 10 at 8 am and 2 times in 3 at 7 pm.

Best connections, one ticket

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


United Details →	LGA 10:29 → IAD 11:55UA 6242 · flown by Mesa	2h 56m Dulles	IAD 14:51 → SFO 17:38UA 2862	10h 09m	96%	75%
United Details →	LGA 06:00 → IAD 07:26UA 3656 · flown by Republic	1h 09m Dulles	IAD 08:35 → SFO 11:19UA 1147	8h 19m	94%	75%
United Details →	LGA 10:15 → IAH 13:06UA 2617	2h 24m Houston	IAH 15:30 → SFO 17:35UA 589	10h 20m	96%	75%
United Details →	LGA 10:00 → DEN 12:20UA 716	1h 05m Denver	DEN 13:25 → SFO 15:09UA 1812	8h 09m	95%	71%
United Details →	LGA 15:38 → IAH 18:46UA 1794	3h 13m Houston	IAH 21:59 → SFO 00:05 +1UA 1609	11h 27m	91%	71%
Delta Details →	LGA 11:10 → MSP 13:08DL 2409	1h 59m Minneapolis	MSP 15:07 → SFO 17:14DL 756	9h 03m	96%	69%
Delta Details →	LGA 06:59 → ATL 09:20DL 342	3h 36m Atlanta	ATL 12:56 → SFO 14:50DL 750	10h 55m	99%	69%
United Details →	LGA 10:15 → ORD 11:57UA 1310	2h 33m Chicago	ORD 14:30 → SFO 17:19UA 1577	10h 04m	96%	68%
Tight connection: often missed
United Details →	LGA 19:28 → IAD 20:55UA 6244 · flown by Mesa	1h 26m Dulles	IAD 22:21 → SFO 01:15 +1UA 367	8h 47m	73%	52%
United Details →	LGA 14:00 → IAH 17:01UA 2674	1h 04m Houston	IAH 18:05 → SFO 20:10UA 1341	9h 10m	71%	43%
American Details →	LGA 13:00 → MIA 16:14AA 1643	1h 01m Miami	MIA 17:15 → SFO 20:20AA 2035	10h 20m	68%	35%

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

MDW · 1h 15m · leaves 07:25 2%

MSP · 1h 10m · leaves 06:25 5%

IAD · 1h 09m · leaves 06:00 6%

Afternoon and evening

DFW · 47m · leaves 14:00 46%

IAH · 49m · leaves 15:38 49%

ORD · 52m · leaves 17:25 68%

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 4377 LGA 06:00 → BOS JetBlue B6 1833 BOS 09:50 → SFO Connection details →	2h 30m	10h 25m	98%	79%
Delta DL 5793 LGA 06:59 → BOS United UA 1074 BOS 11:35 → SFO Connection details →	3h 13m	11h 03m	100%	76%
Southwest WN 1228 LGA 10:20 → DEN United UA 2633 DEN 15:47 → SFO Connection details →	3h 07m	10h 10m	100%	73%

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