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 3% of the time at 7 am and 27% of the time at 9 pm.

Nonstops


United	EWR	SAN	5h 54m	81%	1.7%	1,232	Flying now
Alaska	EWR	SAN	6h 15m	79%	3.7%	328	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	EWR 06:00 → IAD 07:22UA 1366	1h 04m Dulles	IAD 08:26 → SAN 10:49UA 1930	7h 49m	97%	87%
United Details →	EWR 10:00 → DEN 12:18UA 2455	3h 37m Denver	DEN 15:55 → SAN 17:20UA 1281	10h 20m	99%	84%
United Details →	EWR 07:51 → DEN 10:09UA 1701	3h 21m Denver	DEN 13:30 → SAN 14:55UA 1302	10h 04m	97%	82%
United Details →	EWR 06:30 → DEN 08:45UA 670	2h 30m Denver	DEN 11:15 → SAN 12:41UA 1940	9h 11m	99%	82%
United Details →	EWR 07:05 → IAH 09:50UA 2438	2h 10m Houston	IAH 12:00 → SAN 13:21UA 2399	9h 16m	99%	81%
Delta Details →	EWR 07:05 → ATL 09:22DL 1673	2h 31m Atlanta	ATL 11:53 → SAN 13:21DL 540	9h 16m	98%	81%
United Details →	EWR 07:59 → ORD 09:43UA 2488	3h 17m Chicago	ORD 13:00 → SAN 15:25UA 2683	10h 26m	100%	77%
American Details →	EWR 06:00 → CLT 08:01AA 2505	3h 14m Charlotte	CLT 11:15 → SAN 13:05AA 466	10h 05m	98%	77%
Tight connection: often missed
United Details →	EWR 08:15 → SFO 11:29UA 1777	52m San Francisco	SFO 12:21 → SAN 14:08UA 1257	8h 53m	66%	43%
Alaska Details →	EWR 07:25 → SEA 10:35AS 299	51m Seattle	SEA 11:26 → SAN 14:18AS 1346	9h 53m	64%	34%
American Details →	EWR 17:10 → DFW 20:10AA 1810	1h 24m Dallas-Fort Worth	DFW 21:34 → SAN 22:37AA 1011	8h 27m	60%	18%

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

IAD · 1h 04m · leaves 06:00 3%

IAH · 1h 16m · leaves 07:59 8%

ORD · 1h 04m · leaves 06:00 8%

Afternoon and evening

IAH · 1h 17m · leaves 15:40 25%

SFO · 1h 14m · leaves 18:00 27%

MSP · 47m · leaves 18:45 36%

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 1012 EWR 06:00 → ATL Delta DL 540 ATL 11:53 → SAN Connection details →	3h 30m	10h 21m	100%	83%
United UA 1330 EWR 08:50 → SEA Delta DL 2613 SEA 15:25 → SAN Connection details →	3h 28m	12h 23m	99%	81%
JetBlue B6 1573 EWR 07:30 → LAX Delta DL 4001 LAX 14:11 → SAN Connection details →	3h 51m	10h 41m	99%	80%

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