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 5% of the time at 8 am and 1 time in 4 at 9 pm.

Nonstops (seasonal or thin)


United	SFO	RDU	5h 13m	90%	0.5%	887	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Southwest Details →	SFO 21:10 → BWI 05:25WN 2683	2h 45m Baltimore	BWI 08:10 → RDU 09:30 +1WN 1067	9h 20m	98%	98%
United + Americantwo ticketsDetails →	SFO 21:17 → PIT 05:19UA 2117	2h 41m Pittsburgh	PIT 08:00 → RDU 09:28 +1AA 4531 · flown by Republic	9h 09m	100%	93%
United + Deltatwo ticketsDetails →	SFO 21:30 → DTW 05:20UA 234	1h 45m Detroit	DTW 07:05 → RDU 08:48 +1DL 1427	8h 18m	100%	91%
United + Deltatwo ticketsDetails →	SFO 21:13 → TPA 05:38UA 649	3h 35m Tampa	TPA 09:13 → RDU 11:03 +1DL 1279	10h 50m	100%	90%
Delta Details →	SFO 23:59 → ATL 07:42DL 690	3h 32m Atlanta	ATL 11:14 → RDU 12:44 +1DL 1488	9h 45m	99%	90%
United + Deltatwo ticketsDetails →	SFO 21:20 → ATL 05:20UA 1603	3h 23m Atlanta	ATL 08:43 → RDU 10:10 +1DL 1699	9h 50m	98%	90%
American Details →	SFO 21:10 → PHL 05:43AA 2045	2h 37m Philadelphia	PHL 08:20 → RDU 09:51 +1AA 959	9h 41m	96%	88%
Delta Details →	SFO 22:55 → DTW 06:30DL 335	3h 45m Detroit	DTW 10:15 → RDU 11:57 +1DL 2164	10h 05m	100%	87%
Tight connection: often missed
Delta Details →	SFO 23:59 → ATL 07:42DL 690	1h 01m Atlanta	ATL 08:43 → RDU 10:10 +1DL 1699	7h 11m	72%	66%
Delta Details →	SFO 11:38 → ATL 19:27DL 693	51m Atlanta	ATL 20:18 → RDU 21:48DL 3244	7h 10m	74%	55%
American Details →	SFO 12:10 → JFK 21:00AA 166	1h 00m New York	JFK 22:00 → RDU 00:12 +1AA 4573 · flown by Republic	8h 59m	74%	47%

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

DEN · 1h 14m · leaves 05:00 2%

IAH · 1h 08m · leaves 05:00 3%

LAX · 1h 05m · leaves 07:00 5%

Afternoon and evening

JFK · 1h 00m · leaves 12:10 26%

LAX · 50m · leaves 20:11 53%

DEN · 1h 10m · leaves 14:35 88%

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