Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: Southwest’s SJC → BWI flights land within a few points of 83% on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	SJC	BWI	5h 05m	83%	0.4%	242	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Southwest Details →	SJC 22:55 → MDW 05:00WN 3886	2h 00m Chicago	MDW 07:00 → BWI 09:45 +1WN 2742	7h 50m	100%	91%
Southwest Details →	SJC 16:40 → ONT 18:00WN 3691	3h 40m Ontario	ONT 21:40 → BWI 05:30 +1WN 3143	9h 50m	100%	90%
Delta + Unitedtwo ticketsDetails →	SJC 18:12 → LAX 19:37DL 1438	3h 28m Los Angeles	LAX 23:05 → BWI 07:14 +1UA 1605	10h 02m	99%	89%
Delta Details →	SJC 22:00 → ATL 05:34DL 2136	3h 21m Atlanta	ATL 08:55 → BWI 10:47 +1DL 801	9h 47m	100%	89%
Alaska Details →	SJC 17:28 → SEA 19:39AS 1413	1h 57m Seattle	SEA 21:36 → BWI 05:41 +1AS 781	9h 13m	92%	83%
Delta + Southwesttwo ticketsDetails →	SJC 17:01 → SLC 19:57DL 1260	3h 38m Salt Lake City	SLC 23:35 → BWI 05:40 +1WN 3735	9h 39m	99%	81%
Delta Details →	SJC 12:46 → ATL 20:35DL 809	2h 10m Atlanta	ATL 22:45 → BWI 00:40 +1DL 2590	8h 54m	99%	74%
Southwest Details →	SJC 06:30 → SAN 08:00WN 3489	3h 15m San Diego	SAN 11:15 → BWI 19:20WN 3390	9h 50m	100%	71%
Tight connection: often missed
Southwest Details →	SJC 19:00 → SAN 20:25WN 4513	1h 15m San Diego	SAN 21:40 → BWI 05:35 +1WN 3486	7h 35m	49%	32%
Southwest Details →	SJC 11:50 → SAN 13:15WN 3698	55m San Diego	SAN 14:10 → BWI 22:10WN 4148	7h 20m	46%	10%
Southwest Details →	SJC 14:35 → DEN 18:00WN 3668	1h 05m Denver	DEN 19:05 → BWI 00:35 +1WN 1500	6h 58m	33%	9%

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

SAN · 50m · leaves 09:00 46%

Afternoon and evening

MSP · 56m · leaves 13:10 16%

SAN · 1h 15m · leaves 19:00 51%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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