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 6% of the time at 8 am and 2 times in 5 at 4 pm.

Nonstops


American	PHL	SFO	6h 20m	74%	1.7%	1,320	Flying now
United	PHL	SFO	6h 09m	73%	0.7%	727	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 3 h behind Philadelphia). Layovers up to 4 hours. Pick a connection for the details.


United Details →	PHL 06:10 → IAD 07:19UA 3693 · flown by Republic	1h 16m Dulles	IAD 08:35 → SFO 11:19UA 1147	8h 09m	97%	81%
United Details →	PHL 10:39 → IAD 11:55UA 6235 · flown by Mesa	2h 56m Dulles	IAD 14:51 → SFO 17:38UA 2862	9h 59m	100%	79%
United Details →	PHL 08:00 → DEN 10:01UA 2307	3h 24m Denver	DEN 13:25 → SFO 15:09UA 1812	10h 09m	99%	75%
American Details →	PHL 17:40 → LAX 20:36AA 1528	1h 56m Los Angeles	LAX 22:32 → SFO 23:59AA 6510 · flown by SkyWest	9h 19m	95%	75%
United Details →	PHL 10:00 → DEN 12:01UA 1537	3h 46m Denver	DEN 15:47 → SFO 17:30UA 2633	10h 30m	100%	73%
Delta Details →	PHL 05:15 → ATL 07:22DL 1269	1h 03m Atlanta	ATL 08:25 → SFO 10:20DL 693	8h 10m	91%	72%
United Details →	PHL 17:00 → ORD 18:33UA 308	3h 02m Chicago	ORD 21:35 → SFO 00:32 +1UA 2106	10h 32m	93%	69%
American Details →	PHL 10:35 → ORD 12:09AA 1041	3h 09m Chicago	ORD 15:18 → SFO 17:58AA 1253	10h 23m	100%	69%
Tight connection: often missed
American Details →	PHL 12:52 → DFW 15:31AA 415	46m Dallas-Fort Worth	DFW 16:17 → SFO 17:59AA 2810	8h 07m	59%	24%
American Details →	PHL 17:40 → ORD 19:26AA 1012	1h 34m Chicago	ORD 21:00 → SFO 23:58AA 3054	9h 02m	72%	21%
American Details →	PHL 17:30 → PHX 19:37AA 1984	46m Phoenix	PHX 20:23 → SFO 22:23AA 686	7h 53m	44%	20%

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

ORD · 1h 20m · leaves 06:00 3%

IAD · 1h 16m · leaves 06:10 3%

DFW · 1h 05m · leaves 05:00 6%

Afternoon and evening

ATL · 58m · leaves 13:32 41%

DFW · 46m · leaves 12:52 41%

PHX · 46m · leaves 17:30 56%

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.


Delta DL 5740 PHL 06:00 → BOS JetBlue B6 1833 BOS 09:50 → SFO Connection details →	2h 20m	10h 25m	97%	79%
American AA 2408 PHL 11:00 → LAX United UA 233 LAX 17:10 → SFO Connection details →	3h 24m	10h 38m	95%	79%
American AA 3225 PHL 07:18 → BOS United UA 1074 BOS 11:35 → SFO Connection details →	2h 53m	10h 44m	99%	78%

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