tailodds FORECAST
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Showing United only (incl. its regional partners)All airlines ×
Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No nonstop, and no clear pattern: the best connection reaches San Jose on time 4 times in 5.

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach San Jose on time. Total trip = scheduled departure to arrival, layover included (San Jose is 3 h behind Dulles). Layovers up to 4 hours. Pick a connection for the details.
UnitedDetails → IAD 06:30 → IAH 08:39UA 1935 1h 21m Houston IAH 10:00 → SJC 12:03UA 1882 8h 33m 100% 79%
UnitedDetails → IAD 14:35 → DEN 16:29UA 1126 3h 01m Denver DEN 19:30 → SJC 21:09UA 2745 9h 34m 99% 75%
UnitedDetails → IAD 10:13 → DEN 12:05UA 1865 3h 50m Denver DEN 15:55 → SJC 17:35UA 1883 10h 22m 99% 71%
UnitedDetails → IAD 06:30 → DEN 08:22UA 2031 3h 23m Denver DEN 11:45 → SJC 13:24UA 2808 9h 54m 100% 65%
UnitedDetails → IAD 15:39 → ORD 17:02UA 1393 2h 56m Chicago ORD 19:58 → SJC 22:43UA 481 10h 04m 83% 52%
Tight connection: often missed
UnitedDetails → IAD 17:42 → ORD 18:50UA 2497 1h 08m Chicago ORD 19:58 → SJC 22:43UA 481 8h 01m 60% 38%

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.

Afternoon and evening
ORD · 1h 08m · leaves 17:42 40%

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.

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