Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: airlines and hours on this route all land within a few points of 63% on time.

Nonstops (seasonal or thin)


American	IDA	ORD	3h 17m	62%	2.5%	159	Flying now
United	IDA	ORD	–	78%few flights	10.0%	10	Not flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Alaska + Unitedtwo ticketsDetails →	IDA 13:43 → SEA 14:48AS 3489 · flown by SkyWest	2h 27m Seattle	SEA 17:15 → ORD 23:22UA 1503	8h 39m	100%	80%
United Details →	IDA 07:00 → DEN 08:55UA 4706 · flown by SkyWest	2h 20m Denver	DEN 11:15 → ORD 14:55UA 2865	6h 55m	96%	79%
Alaska + Americantwo ticketsDetails →	IDA 07:15 → SEA 08:21AS 3054 · flown by SkyWest	2h 01m Seattle	SEA 10:22 → ORD 16:53AA 2523	8h 35m	96%	71%
American + Frontiertwo ticketsDetails →	IDA 07:00 → DFW 11:00AA 6466 · flown by SkyWest	2h 19m Dallas-Fort Worth	DFW 13:19 → ORD 15:59F9 1342	8h 02m	96%	70%
Delta Details →	IDA 11:25 → SLC 12:31DL 3944 · flown by SkyWest	2h 04m Salt Lake City	SLC 14:35 → ORD 18:58DL 2377	6h 33m	98%	69%
Delta Details →	IDA 15:22 → SLC 16:30DL 3765 · flown by SkyWest	51m Salt Lake City	SLC 17:21 → ORD 21:29DL 2413	5h 11m	90%	67%
Delta Details →	IDA 06:00 → SLC 07:01DL 2335	49m Salt Lake City	SLC 07:50 → ORD 12:00DL 2247	5h 00m	77%	66%
United Details →	IDA 14:30 → DEN 16:18UA 2155	3h 22m Denver	DEN 19:40 → ORD 23:19UA 2085	7h 49m	92%	64%
Tight connection: often missed
United Details →	IDA 16:14 → DEN 18:05UA 5666 · flown by SkyWest	1h 05m Denver	DEN 19:10 → ORD 22:49UA 2258	5h 35m	72%	50%
American Details →	IDA 13:53 → DFW 17:49AA 5010 · flown by SkyWest	49m Dallas-Fort Worth	DFW 18:38 → ORD 21:22AA 1424	6h 29m	49%	18%

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 · 49m · leaves 06:00 23%

Afternoon and evening

SLC · 51m · leaves 15:22 10%

DEN · 1h 05m · leaves 16:14 28%

DFW · 49m · leaves 13:53 51%

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