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 43% of the time at 11 pm.

Nonstops


United	SFO	ATL	4h 50m	86%	0.2%	637	Flying now
Delta	SFO	ATL	4h 40m	82%	0.7%	2,406	Flying now
Frontier	SFO	ATL	5h 00m	61%	3.6%	306	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Atlanta on time. Total trip = scheduled departure to arrival, layover included (Atlanta 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 55m Baltimore	BWI 08:20 → ATL 10:20 +1WN 3931	10h 08m	100%	92%
American Details →	SFO 21:10 → PHL 05:43AA 2045	3h 49m Philadelphia	PHL 09:32 → ATL 11:53 +1AA 4338 · flown by Republic	11h 43m	100%	89%
United Details →	SFO 21:30 → IAD 05:53UA 357	2h 22m Dulles	IAD 08:15 → ATL 10:14 +1UA 2739	9h 44m	100%	89%
Delta Details →	SFO 10:35 → SEA 12:53DL 2870	3h 12m Seattle	SEA 16:05 → ATL 23:59DL 560	10h 24m	100%	87%
Delta Details →	SFO 00:35 → MSP 06:09DL 2789	2h 19m Minneapolis	MSP 08:28 → ATL 11:54DL 1052	8h 19m	97%	87%
United Details →	SFO 00:50 → ORD 07:16UA 1850	3h 13m Chicago	ORD 10:29 → ATL 13:44UA 2684	9h 54m	100%	86%
Delta Details →	SFO 22:55 → DTW 06:30DL 335	3h 55m Detroit	DTW 10:25 → ATL 12:25 +1DL 2856	10h 28m	100%	85%
Alaska Details →	SFO 17:38 → SEA 19:47AS 758	3h 44m Seattle	SEA 23:31 → ATL 07:24 +1AS 464	10h 46m	98%	85%
Tight connection: often missed
Delta Details →	SFO 09:55 → SLC 12:44DL 920	51m Salt Lake City	SLC 13:35 → ATL 19:23DL 906	6h 28m	71%	60%
United Details →	SFO 10:20 → EWR 19:03UA 713	49m Newark	EWR 19:52 → ATL 22:22UA 1287	9h 02m	63%	40%
American Details →	SFO 12:36 → DFW 18:29AA 3258	57m Dallas-Fort Worth	DFW 19:26 → ATL 22:36AA 3212	6h 59m	72%	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.

Morning

SLC · 1h 13m · leaves 05:50 3%

IAH · 1h 00m · leaves 05:00 3%

MSP · 1h 10m · leaves 06:00 4%

Afternoon and evening

DFW · 1h 11m · leaves 14:03 38%

SEA · 50m · leaves 20:28 43%

DEN · 55m · leaves 14:35 93%

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 1561 SFO 16:47 → SAN Delta DL 819 SAN 22:30 → ATL Connection details →	3h 51m	10h 03m	97%	91%
United UA 1939 SFO 21:23 → CMH Delta DL 3165 CMH 08:08 → ATL Connection details →	2h 53m	9h 22m	100%	91%
United UA 1965 SFO 23:59 → RDU Delta DL 1699 RDU 11:15 → ATL Connection details →	2h 54m	9h 43m	100%	90%

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