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 6% of the time at 8 am and 38% of the time at 6 pm.

Nonstops (seasonal or thin)


United	SFO	TUS	2h 16m	79%	0.3%	945	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Tucson on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	SFO 09:55 → SLC 12:44DL 920	2h 16m Salt Lake City	SLC 15:00 → TUS 16:07DL 3717 · flown by SkyWest	6h 12m	95%	88%
American Details →	SFO 12:18 → PHX 14:29AA 2548	2h 36m Phoenix	PHX 17:05 → TUS 17:54AA 4126 · flown by Envoy	5h 36m	97%	86%
Delta Details →	SFO 07:00 → LAX 08:30DL 1598	1h 00m Los Angeles	LAX 09:30 → TUS 11:08DL 3766 · flown by SkyWest	4h 09m	94%	86%
United Details →	SFO 05:00 → DEN 08:35UA 1479	2h 55m Denver	DEN 11:30 → TUS 12:32UA 1188	7h 32m	99%	85%
Southwest Details →	SFO 05:00 → LAS 06:35WN 4231	1h 05m Las Vegas	LAS 07:40 → TUS 09:00WN 519	4h 00m	93%	84%
American Details →	SFO 06:00 → LAX 07:41AA 6294 · flown by SkyWest	2h 47m Los Angeles	LAX 10:28 → TUS 12:03AA 6376 · flown by SkyWest	6h 03m	99%	84%
American Details →	SFO 08:15 → PHX 10:22AA 2414	3h 13m Phoenix	PHX 13:35 → TUS 14:28AA 6373 · flown by SkyWest	6h 13m	98%	82%
American Details →	SFO 10:09 → LAX 11:49AA 6428 · flown by SkyWest	3h 48m Los Angeles	LAX 15:37 → TUS 17:10AA 6372 · flown by SkyWest	7h 01m	99%	82%
Tight connection: often missed
Delta Details →	SFO 16:39 → LAX 18:13DL 2267	1h 08m Los Angeles	LAX 19:21 → TUS 21:00DL 3846 · flown by SkyWest	4h 21m	62%	50%
United Details →	SFO 14:20 → DEN 18:11UA 1596	59m Denver	DEN 19:10 → TUS 20:12UA 1762	5h 52m	70%	49%
American Details →	SFO 15:52 → PHX 18:04AA 1321	1h 03m Phoenix	PHX 19:07 → TUS 20:01AA 6370 · flown by SkyWest	4h 09m	52%	33%

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

LAX · 1h 00m · leaves 07:00 6%

LAS · 1h 05m · leaves 05:00 7%

DFW · 56m · leaves 05:29 8%

Afternoon and evening

DEN · 59m · leaves 14:20 30%

PHX · 50m · leaves 18:55 50%

LAX · 1h 05m · leaves 14:15 73%

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 5605 SFO 08:40 → SLC Delta DL 3717 SLC 15:00 → TUS Connection details →	3h 11m	7h 27m	100%	94%
Southwest WN 2222 SFO 06:05 → LAX Delta DL 3766 LAX 09:30 → TUS Connection details →	1h 55m	5h 04m	100%	91%
Southwest WN 1424 SFO 05:10 → DEN United UA 1188 DEN 11:30 → TUS Connection details →	2h 50m	7h 22m	100%	86%

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