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 7 in 10 on time.

Nonstops


American	GRR	ORD	1h 15m	71%	3.7%	1,936	Flying now
United	GRR	ORD	1h 17m	69%	2.5%	2,735	Flying now

Best connections, one ticket

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 behind Grand Rapids). Layovers up to 4 hours. Pick a connection for the details.


American Details →	GRR 06:01 → CLT 07:57AA 3230	3h 04m Charlotte	CLT 11:01 → ORD 12:19AA 2908	7h 18m	97%	86%
Delta Details →	GRR 05:30 → DTW 06:30DL 4885 · flown by Endeavor	3h 45m Detroit	DTW 10:15 → ORD 10:50DL 3673 · flown by SkyWest	6h 20m	96%	85%
Delta Details →	GRR 08:15 → DTW 09:19DL 3885 · flown by SkyWest	3h 16m Detroit	DTW 12:35 → ORD 13:03DL 1716	5h 48m	100%	77%
American Details →	GRR 06:44 → PHL 08:44AA 5494 · flown by PSA	1h 51m Philadelphia	PHL 10:35 → ORD 12:09AA 1041	6h 25m	98%	75%
United Details →	GRR 06:05 → EWR 08:00UA 3718 · flown by Republic	2h 24m Newark	EWR 10:24 → ORD 12:06UA 1525	7h 01m	97%	73%
Delta Details →	GRR 07:53 → ATL 09:56DL 2161	3h 06m Atlanta	ATL 13:02 → ORD 14:16DL 1477	7h 23m	97%	72%
Delta Details →	GRR 06:10 → ATL 08:14DL 2453	3h 08m Atlanta	ATL 11:22 → ORD 12:36DL 2894	7h 26m	99%	68%
Delta Details →	GRR 07:00 → MSP 07:33DL 2913	2h 27m Minneapolis	MSP 10:00 → ORD 11:32DL 1567	5h 31m	97%	67%
Tight connection: often missed
American Details →	GRR 07:01 → DFW 08:48AA 1561	47m Dallas-Fort Worth	DFW 09:35 → ORD 12:14AA 1290	6h 13m	63%	40%
American Details →	GRR 14:03 → DCA 15:59AA 5200 · flown by PSA	1h 23m Washington	DCA 17:22 → ORD 18:54AA 1630	5h 51m	48%	30%
American Details →	GRR 17:34 → CLT 19:39AA 1891	48m Charlotte	CLT 20:27 → ORD 22:00AA 627	5h 26m	49%	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

EWR · 1h 20m · leaves 06:05 8%

DTW · 56m · leaves 08:15 11%

ATL · 48m · leaves 06:10 15%

Afternoon and evening

IAH · 1h 15m · leaves 17:07 23%

DTW · 1h 01m · leaves 17:55 30%

CLT · 48m · leaves 17:34 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.


Southwest WN 1926 GRR 05:30 → BWI United UA 704 BWI 10:32 → ORD Connection details →	3h 22m	7h 18m	97%	87%
Delta DL 2913 GRR 07:00 → MSP American AA 4162 MSP 10:31 → ORD Connection details →	2h 58m	6h 16m	97%	84%
Southwest WN 1891 GRR 05:25 → BWI American AA 3446 BWI 10:31 → ORD Connection details →	3h 26m	7h 21m	96%	83%

Rank all connections, any airlines →

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