The nonstop is quickest: Southwest MDW → BOI (3h 35m), on time 7 times in 10. Southwest via Denver (5h 30m) is more reliable, 88%, but takes 1h 55m longer.
Nonstops (seasonal or thin)
Nonstop details →| Southwest | MDW | BOI | 3h 35m | 71% | 2.3% | 87 | Flying now |
Best connections, any airlines
Ranked by chance you reach Boise on time. Total trip = scheduled departure to arrival, layover included (Boise is 1 h behind Chicago). Layovers up to 4 hours. Pick a connection for the details.
| SouthwestDetails → | MDW 05:20 → PHX 06:55WN 2858 | 1h 45m Phoenix | PHX 08:40 → BOI 11:45WN 4601 | 7h 25m | 97% | 91% |
| SouthwestDetails → | MDW 05:15 → DEN 06:50WN 2989 | 55m Denver | DEN 07:45 → BOI 09:45WN 818 | 5h 30m | 98% | 88% |
| Southwest + Alaskatwo ticketsDetails → | MDW 10:05 → PDX 12:25WN 2809 | 2h 33m Portland | PDX 14:58 → BOI 17:16AS 342 | 8h 11m | 100% | 87% |
| Southwest + Deltatwo ticketsDetails → | MDW 07:40 → MSP 09:10WN 1243 | 2h 29m Minneapolis | MSP 11:39 → BOI 13:51DL 2982 | 7h 11m | 100% | 85% |
| Southwest + Americantwo ticketsDetails → | MDW 08:40 → PHX 10:20WN 3016 | 3h 34m Phoenix | PHX 13:54 → BOI 17:09AA 4934 · flown by SkyWest | 9h 29m | 100% | 85% |
| Southwest + Unitedtwo ticketsDetails → | MDW 06:50 → DEN 08:20WN 2765 | 3h 15m Denver | DEN 11:35 → BOI 13:34UA 2255 | 7h 44m | 100% | 82% |
| DeltaDetails → | MDW 06:00 → ATL 08:55DL 1285 | 1h 35m Atlanta | ATL 10:30 → BOI 12:54DL 874 | 7h 54m | 94% | 81% |
| Southwest + Alaskatwo ticketsDetails → | MDW 10:40 → SEA 13:10WN 1340 | 2h 35m Seattle | SEA 15:45 → BOI 18:11AS 2061 · flown by Horizon | 8h 31m | 88% | 80% |
| Tight connection: often missed | ||||||
| SouthwestDetails → | MDW 10:05 → OAK 12:35WN 3366 | 55m Oakland | OAK 13:30 → BOI 16:00WN 803 | 6h 55m | 70% | 57% |
| SouthwestDetails → | MDW 05:52 → SAN 08:00WN 3103 | 48m San Diego | SAN 08:48 → BOI 11:58WN 4873 | 7h 06m | 70% | 53% |
| DeltaDetails → | MDW 19:06 → MSP 20:51DL 4713 · flown by Endeavor | 49m Minneapolis | MSP 21:40 → BOI 23:46DL 2488 | 5h 41m | 52% | 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.
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
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.
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