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

No clear winner: American’s ROC → BOS flights land within a few points of 3 in 4 on time whatever the hour.

Nonstops (seasonal or thin)


American	ROC	BOS	1h 30m	76%	2.8%	835	Flying now

Best connections, any airlines

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 →	ROC 05:00 → CLT 06:54AA 1058	2h 01m Charlotte	CLT 08:55 → BOS 11:08AA 1533	6h 08m	97%	93%
American + Unitedtwo ticketsDetails →	ROC 05:00 → ORD 05:54AA 4247 · flown by Envoy	1h 39m Chicago	ORD 07:33 → BOS 11:05UA 1076	6h 05m	97%	92%
United + Deltatwo ticketsDetails →	ROC 06:00 → EWR 07:20UA 3626 · flown by Republic	2h 10m Newark	EWR 09:30 → BOS 10:55DL 5764 · flown by Republic	4h 55m	97%	85%
American Details →	ROC 06:05 → PHL 07:32AA 5930 · flown by Piedmont	2h 58m Philadelphia	PHL 10:30 → BOS 12:03AA 1416	5h 58m	98%	82%
Southwest + Deltatwo ticketsDetails →	ROC 06:10 → BWI 07:25WN 4680	1h 35m Baltimore	BWI 09:00 → BOS 10:39DL 5703 · flown by Republic	4h 29m	93%	81%
American Details →	ROC 05:33 → DCA 06:59AA 5351 · flown by PSA	2h 41m Washington	DCA 09:40 → BOS 11:24AA 4691 · flown by Republic	5h 51m	95%	81%
Delta Details →	ROC 06:00 → ATL 08:12DL 1200	1h 48m Atlanta	ATL 10:00 → BOS 12:44DL 855	6h 44m	97%	80%
United Details →	ROC 06:10 → IAD 07:31UA 4578 · flown by GoJet	1h 04m Dulles	IAD 08:35 → BOS 10:20UA 641	4h 10m	91%	80%
Tight connection: often missed
American Details →	ROC 11:51 → DCA 13:19AA 5374 · flown by PSA	1h 40m Washington	DCA 14:59 → BOS 16:42AA 1557	4h 51m	75%	40%
American Details →	ROC 17:43 → DCA 19:15AA 5375 · flown by PSA	1h 25m Washington	DCA 20:40 → BOS 22:19AA 4382 · flown by Republic	4h 38m	68%	36%
Delta Details →	ROC 19:23 → LGA 20:44DL 5054 · flown by Endeavor	1h 15m New York	LGA 21:59 → BOS 23:27DL 2801	4h 04m	70%	27%

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

ORD · 1h 00m · leaves 05:00 1%

EWR · 1h 15m · leaves 06:00 3%

BWI · 50m · leaves 06:10 7%

Afternoon and evening

LGA · 1h 15m · leaves 19:23 30%

PHL · 48m · leaves 15:13 35%

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