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 6% of the time at 8 am and 28% of the time at 5 pm.

Nonstops


American	CMH	BOS	2h 02m	85%	1.7%	992	Flying now
Delta	CMH	BOS	2h 04m	82%	2.6%	995	Flying now
Spirit	CMH	BOS	2h 06m	22%few flights	0.0%	18	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Boston on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


American Details →	CMH 06:09 → CLT 07:39AA 3206	1h 16m Charlotte	CLT 08:55 → BOS 11:08AA 1533	4h 59m	97%	92%
American Details →	CMH 05:30 → ORD 06:00AA 4487 · flown by Republic	2h 30m Chicago	ORD 08:30 → BOS 12:07AA 4106 · flown by Envoy	6h 37m	100%	91%
United Details →	CMH 05:30 → ORD 06:09UA 3524 · flown by Republic	1h 24m Chicago	ORD 07:33 → BOS 11:05UA 1076	5h 35m	97%	90%
United Details →	CMH 07:00 → ORD 07:39UA 3429 · flown by Republic	1h 36m Chicago	ORD 09:15 → BOS 12:57UA 1117	5h 57m	98%	85%
Southwest Details →	CMH 05:45 → BWI 07:05WN 4376	1h 10m Baltimore	BWI 08:15 → BOS 09:50WN 884	4h 05m	98%	84%
American Details →	CMH 08:03 → CLT 09:40AA 3217	1h 38m Charlotte	CLT 11:18 → BOS 13:33AA 1611	5h 30m	95%	84%
American Details →	CMH 05:08 → MIA 07:51AA 3662 · flown by Envoy	1h 32m Miami	MIA 09:23 → BOS 12:48AA 1589	7h 39m	100%	82%
Southwest Details →	CMH 07:12 → STL 07:38WN 1207	2h 27m St Louis	STL 10:05 → BOS 13:40WN 3891	6h 28m	100%	82%
Tight connection: often missed
United Details →	CMH 09:00 → ORD 09:36UA 466	49m Chicago	ORD 10:25 → BOS 14:04UA 1606	5h 02m	63%	48%
American Details →	CMH 14:32 → ORD 15:14AA 4954 · flown by SkyWest	59m Chicago	ORD 16:13 → BOS 19:57AA 4384 · flown by Republic	5h 32m	73%	39%
American Details →	CMH 14:42 → DFW 16:31AA 1492	56m Dallas-Fort Worth	DFW 17:27 → BOS 22:17AA 2306	7h 35m	72%	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

BWI · 1h 10m · leaves 05:45 2%

MIA · 1h 06m · leaves 07:00 2%

CLT · 1h 16m · leaves 06:09 3%

Afternoon and evening

DFW · 56m · leaves 14:42 28%

BWI · 1h 05m · leaves 17:35 41%

LGA · 46m · leaves 14:25 54%

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 3524 CMH 05:30 → ORD American AA 4106 ORD 08:30 → BOS Connection details →	2h 21m	6h 37m	98%	88%
American AA 4487 CMH 05:30 → ORD United UA 1117 ORD 09:15 → BOS Connection details →	3h 15m	7h 27m	100%	87%
Southwest WN 1207 CMH 07:12 → STL American AA 3814 STL 09:39 → BOS Connection details →	2h 01m	6h 12m	100%	87%

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