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 1 time in 10 at 8 am and 1 time in 3 at 10 pm.

Nonstops


American	BUF	BOS	1h 36m	84%	2.1%	376	Flying now
JetBlue	BUF	BOS	1h 25m	74%	3.3%	919	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 →	BUF 06:00 → DCA 07:29AA 3668 · flown by Envoy	2h 11m Washington	DCA 09:40 → BOS 11:24AA 4691 · flown by Republic	5h 24m	100%	89%
Southwest Details →	BUF 07:35 → MDW 08:15WN 4154	55m Chicago	MDW 09:10 → BOS 12:28WN 1405	4h 53m	100%	88%
American Details →	BUF 06:01 → CLT 08:01AA 1204	54m Charlotte	CLT 08:55 → BOS 11:08AA 1533	5h 07m	91%	87%
American Details →	BUF 05:20 → PHL 06:46AA 5873 · flown by Piedmont	1h 41m Philadelphia	PHL 08:27 → BOS 09:56AA 2783	4h 36m	98%	84%
American Details →	BUF 06:00 → ORD 07:03AA 1195	1h 27m Chicago	ORD 08:30 → BOS 12:07AA 4106 · flown by Envoy	6h 07m	94%	82%
Southwest Details →	BUF 06:05 → BWI 07:20WN 756	55m Baltimore	BWI 08:15 → BOS 09:50WN 884	3h 45m	95%	82%
Delta Details →	BUF 06:00 → ATL 08:10DL 2664	1h 50m Atlanta	ATL 10:00 → BOS 12:44DL 855	6h 44m	97%	81%
Delta Details →	BUF 06:29 → DTW 07:42DL 2898	2h 23m Detroit	DTW 10:05 → BOS 12:05DL 2648	5h 34m	97%	79%
Tight connection: often missed
JetBlue Details →	BUF 20:00 → JFK 21:34B6 201	55m New York	JFK 22:29 → BOS 23:59B6 1318	3h 59m	66%	37%
United Details →	BUF 13:54 → ORD 14:55UA 4381 · flown by GoJet	1h 00m Chicago	ORD 15:55 → BOS 19:30UA 2466	5h 36m	73%	35%
American Details →	BUF 17:25 → DCA 18:59AA 5106 · flown by PSA	1h 41m Washington	DCA 20:40 → BOS 22:19AA 4382 · flown by Republic	4h 56m	63%	33%

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 · 55m · leaves 06:05 5%

LGA · 1h 16m · leaves 10:20 7%

JFK · 1h 20m · leaves 07:00 7%

Afternoon and evening

ORD · 1h 17m · leaves 16:48 36%

CLT · 50m · leaves 19:35 47%

BWI · 50m · leaves 17:55 58%

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.


American AA 5873 BUF 05:20 → PHL Delta DL 5845 PHL 09:30 → BOS Connection details →	2h 44m	5h 39m	98%	86%
Southwest WN 756 BUF 06:05 → BWI Delta DL 5703 BWI 09:00 → BOS Connection details →	1h 40m	4h 34m	95%	83%
American AA 3668 BUF 06:00 → DCA Delta DL 5611 DCA 10:00 → BOS Connection details →	2h 31m	5h 43m	96%	82%

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