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 4% of the time at 9 am and 1 time in 4 at 6 pm.

Nonstops (seasonal or thin)


United	IAH	GRR	2h 53m	80%	0.8%	366	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	IAH 11:32 → DTW 15:20DL 1043	2h 40m Detroit	DTW 18:00 → GRR 19:01DL 5800 · flown by Republic	6h 29m	99%	91%
United Details →	IAH 05:04 → ORD 07:59UA 1044	2h 38m Chicago	ORD 10:37 → GRR 12:50UA 1297	6h 46m	100%	89%
United Details →	IAH 05:15 → DEN 06:47UA 1874	3h 11m Denver	DEN 09:58 → GRR 14:35UA 2637	8h 20m	99%	87%
American Details →	IAH 06:13 → ORD 09:07AA 3106	2h 49m Chicago	ORD 11:56 → GRR 14:05AA 3553 · flown by Envoy	6h 52m	97%	83%
Delta Details →	IAH 05:40 → ATL 08:43DL 1069	1h 07m Atlanta	ATL 09:50 → GRR 11:46DL 2547	5h 06m	96%	80%
United Details →	IAH 06:01 → EWR 10:36UA 1797	3h 16m Newark	EWR 13:52 → GRR 16:03UA 3419 · flown by Republic	9h 02m	100%	79%
Delta Details →	IAH 09:42 → ATL 12:48DL 1585	2h 31m Atlanta	ATL 15:19 → GRR 17:14DL 2058	6h 33m	97%	78%
Delta Details →	IAH 15:27 → DTW 19:15DL 1865	3h 40m Detroit	DTW 22:55 → GRR 23:57DL 4880 · flown by Endeavor	7h 30m	100%	77%
Tight connection: often missed
United Details →	IAH 13:46 → EWR 18:30UA 1397	1h 00m Newark	EWR 19:30 → GRR 21:50UA 3580 · flown by Republic	7h 04m	74%	53%
American Details →	IAH 16:27 → PHL 20:55AA 1925	55m Philadelphia	PHL 21:50 → GRR 23:58AA 5493 · flown by PSA	6h 31m	67%	42%
American Details →	IAH 10:39 → DFW 12:03AA 1916	1h 00m Dallas-Fort Worth	DFW 13:03 → GRR 16:32AA 310	4h 52m	65%	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.

Morning

DTW · 1h 10m · leaves 05:20 4%

ATL · 1h 07m · leaves 05:40 4%

ORD · 51m · leaves 05:04 9%

Afternoon and evening

DTW · 51m · leaves 11:32 24%

EWR · 1h 00m · leaves 13:46 26%

PHL · 55m · leaves 16:27 33%

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.


United UA 1044 IAH 05:04 → ORD American AA 3553 ORD 11:56 → GRR Connection details →	3h 57m	8h 01m	100%	90%
United UA 1450 IAH 09:32 → DEN Frontier F9 1248 DEN 15:08 → GRR Connection details →	4h 00m	9h 10m	98%	87%
Frontier F9 3229 IAH 06:30 → DEN United UA 2637 DEN 09:58 → GRR Connection details →	1h 52m	7h 05m	91%	80%

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