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 8% of the time at 8 am and 1 time in 5 at 7 pm.

Nonstops (seasonal or thin)


Alaska	BOI	ONT	2h 07m	84%	1.0%	206	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Ontario on time. Total trip = scheduled departure to arrival, layover included (Ontario is 1 h behind Boise). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	BOI 05:18 → PHX 06:22WN 4470	1h 28m Phoenix	PHX 07:50 → ONT 09:05WN 759	4h 47m	100%	93%
Southwest Details →	BOI 06:30 → SMF 06:55WN 715	2h 15m Sacramento	SMF 09:10 → ONT 10:30WN 3805	5h 00m	100%	92%
Delta Details →	BOI 08:25 → SLC 09:44DL 3607 · flown by SkyWest	1h 35m Salt Lake City	SLC 11:19 → ONT 12:10DL 3172	4h 45m	98%	89%
Southwest + Unitedtwo ticketsDetails →	BOI 07:20 → DEN 09:10WN 698	2h 15m Denver	DEN 11:25 → ONT 12:47UA 430	6h 27m	98%	87%
Alaska Details →	BOI 05:57 → PDX 06:17AS 1566	1h 19m Portland	PDX 07:36 → ONT 09:56AS 1449	4h 59m	96%	87%
Alaska Details →	BOI 06:23 → SEA 07:00AS 423	1h 33m Seattle	SEA 08:33 → ONT 11:14AS 1364	5h 51m	100%	87%
Alaska + Deltatwo ticketsDetails →	BOI 11:42 → SEA 12:16AS 2159 · flown by Horizon	2h 19m Seattle	SEA 14:35 → ONT 17:19DL 4031 · flown by SkyWest	6h 37m	98%	86%
Delta Details →	BOI 18:42 → SLC 19:57DL 2920	3h 02m Salt Lake City	SLC 22:59 → ONT 23:48DL 1614	6h 06m	99%	86%
Tight connection: often missed
United Details →	BOI 14:00 → SFO 14:58UA 4661 · flown by SkyWest	1h 19m San Francisco	SFO 16:17 → ONT 17:54UA 5613 · flown by SkyWest	4h 54m	63%	40%
American Details →	BOI 15:54 → DFW 20:15AA 1531	1h 12m Dallas-Fort Worth	DFW 21:27 → ONT 22:32AA 711	7h 38m	72%	34%
United Details →	BOI 19:05 → SFO 19:58UA 649	1h 02m San Francisco	SFO 21:00 → ONT 22:37UA 552	4h 32m	25%	21%

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

PDX · 1h 19m · leaves 05:57 4%

PHX · 1h 15m · leaves 08:11 6%

SEA · 50m · leaves 06:43 8%

Afternoon and evening

SMF · 1h 10m · leaves 19:20 25%

DFW · 1h 12m · leaves 15:54 28%

SFO · 1h 02m · leaves 19:05 75%

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