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 3 in 5 on time.

Nonstops (seasonal or thin)


United	SUN	ORD	3h 33m	67%	1.2%	171	Flying now
American	SUN	ORD	3h 34m	51%	10.0%	110	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 Hailey). Layovers up to 4 hours. Pick a connection for the details.


Alaska + Americantwo ticketsDetails →	SUN 19:43 → SEA 20:35AS 2327 · flown by Horizon	3h 21m Seattle	SEA 23:56 → ORD 06:02 +1AA 2881	9h 19m	100%	87%
United Details →	SUN 13:57 → LAX 15:31UA 6008 · flown by SkyWest	1h 29m Los Angeles	LAX 17:00 → ORD 23:16UA 212	8h 19m	98%	85%
United Details →	SUN 07:00 → DEN 08:58UA 5712 · flown by SkyWest	2h 17m Denver	DEN 11:15 → ORD 14:55UA 2865	6h 55m	96%	79%
Delta Details →	SUN 13:10 → SLC 14:24DL 4019 · flown by SkyWest	2h 57m Salt Lake City	SLC 17:21 → ORD 21:29DL 2413	7h 23m	98%	72%
United Details →	SUN 08:00 → LAX 09:34UA 6053 · flown by SkyWest	1h 11m Los Angeles	LAX 10:45 → ORD 17:04UA 2113	8h 04m	92%	72%
Alaska Details →	SUN 10:20 → SEA 11:14AS 2325 · flown by Horizon	1h 56m Seattle	SEA 13:10 → ORD 19:21AS 410	8h 01m	100%	71%
United Details →	SUN 14:38 → DEN 16:45UA 5268 · flown by SkyWest	2h 55m Denver	DEN 19:40 → ORD 23:19UA 2085	7h 41m	93%	65%
United Details →	SUN 07:40 → SFO 08:59UA 5423 · flown by SkyWest	3h 01m San Francisco	SFO 12:00 → ORD 18:35UA 2317	9h 55m	96%	47%
Tight connection: often missed
United Details →	SUN 07:40 → SFO 08:59UA 5423 · flown by SkyWest	1h 06m San Francisco	SFO 10:05 → ORD 16:38UA 1954	7h 58m	52%	37%

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

SFO · 1h 06m · leaves 07:40 48%

Afternoon and evening

SLC · 57m · leaves 15:15 12%

DEN · 1h 15m · leaves 14:38 16%

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