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 3% of the time at 8 am and 1 time in 5 at 5 pm.

Nonstops (seasonal or thin)


Delta	BOI	ATL	4h 06m	85%	1.5%	545	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Atlanta on time. Total trip = scheduled departure to arrival, layover included (Atlanta is 2 h ahead of Boise). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	BOI 19:28 → SEA 20:14DL 3688 · flown by SkyWest	3h 45m Seattle	SEA 23:59 → ATL 07:46 +1DL 652	10h 18m	100%	87%
Alaska + Deltatwo ticketsDetails →	BOI 07:57 → SAN 09:24AS 3235 · flown by SkyWest	3h 38m San Diego	SAN 13:02 → ATL 20:35DL 712	10h 38m	100%	87%
Alaska + Deltatwo ticketsDetails →	BOI 13:06 → SEA 13:40AS 2235 · flown by Horizon	2h 25m Seattle	SEA 16:05 → ATL 23:59DL 560	8h 53m	100%	87%
Delta Details →	BOI 18:42 → SLC 19:57DL 2920	3h 38m Salt Lake City	SLC 23:35 → ATL 05:15 +1DL 912	8h 33m	99%	85%
Delta Details →	BOI 07:00 → LAX 08:28DL 3725 · flown by SkyWest	2h 37m Los Angeles	LAX 11:05 → ATL 18:32DL 528	9h 32m	99%	85%
Delta Details →	BOI 08:25 → SLC 09:44DL 3607 · flown by SkyWest	3h 51m Salt Lake City	SLC 13:35 → ATL 19:23DL 906	8h 58m	100%	85%
Delta Details →	BOI 13:05 → SLC 14:21DL 1442	3h 34m Salt Lake City	SLC 17:55 → ATL 23:48DL 905	8h 43m	100%	84%
United Details →	BOI 05:00 → DEN 07:05UA 5924 · flown by SkyWest	2h 55m Denver	DEN 10:00 → ATL 15:10UA 2424	8h 10m	99%	83%
Tight connection: often missed
American Details →	BOI 13:59 → PHX 15:06AA 4080 · flown by Envoy	1h 05m Phoenix	PHX 16:11 → ATL 22:50AA 2391	6h 51m	74%	52%
United Details →	BOI 19:05 → SFO 19:58UA 649	1h 22m San Francisco	SFO 21:20 → ATL 05:20 +1UA 1603	8h 15m	38%	32%
American Details →	BOI 15:54 → DFW 20:15AA 1531	55m Dallas-Fort Worth	DFW 21:10 → ATL 00:19 +1AA 2749	6h 25m	59%	28%

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 05m · leaves 07:20 2%

SLC · 1h 16m · leaves 08:25 2%

LAX · 1h 05m · leaves 07:00 3%

Afternoon and evening

DEN · 1h 09m · leaves 14:40 19%

PHX · 1h 05m · leaves 13:59 26%

DFW · 55m · leaves 15:54 41%

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