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 3% of the time at 7 am and 1 time in 3 at 9 pm.

Nonstops


American	BOS	BUF	1h 49m	83%	2.1%	377	Flying now
JetBlue	BOS	BUF	1h 39m	73%	3.4%	918	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	BOS 06:05 → CLT 08:30AA 418	2h 40m Charlotte	CLT 11:10 → BUF 12:54AA 1616	6h 50m	99%	87%
United Details →	BOS 05:45 → IAD 07:23UA 1734	1h 02m Dulles	IAD 08:25 → BUF 09:51UA 3514 · flown by Republic	4h 06m	97%	86%
American Details →	BOS 06:00 → PHL 07:37AA 1146	1h 07m Philadelphia	PHL 08:44 → BUF 10:18AA 5925 · flown by Piedmont	4h 17m	95%	86%
Southwest Details →	BOS 05:30 → BWI 07:05WN 727	3h 45m Baltimore	BWI 10:50 → BUF 12:05WN 762	6h 35m	100%	84%
Delta Details →	BOS 05:30 → ATL 08:15DL 2242	49m Atlanta	ATL 09:04 → BUF 11:09DL 1384	5h 39m	94%	81%
Southwest Details →	BOS 05:25 → MDW 07:00WN 3239	52m Chicago	MDW 07:52 → BUF 10:25WN 758	4h 57m	85%	80%
Delta Details →	BOS 09:05 → ATL 11:49DL 456	2h 11m Atlanta	ATL 14:00 → BUF 16:06DL 2266	7h 01m	98%	78%
United Details →	BOS 09:50 → ORD 11:43UA 1349	2h 12m Chicago	ORD 13:55 → BUF 16:41UA 2226	6h 51m	97%	78%
Tight connection: often missed
Delta Details →	BOS 17:56 → ATL 21:01DL 2464	48m Atlanta	ATL 21:49 → BUF 23:59DL 2334	6h 03m	66%	49%
American Details →	BOS 19:37 → PHL 21:20AA 1147	1h 00m Philadelphia	PHL 22:20 → BUF 23:53AA 5911 · flown by Piedmont	4h 16m	46%	35%
American Details →	BOS 17:38 → ORD 19:59AA 1592	1h 33m Chicago	ORD 21:32 → BUF 00:38 +1AA 403	6h 34m	66%	22%

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

IAD · 1h 02m · leaves 05:45 3%

PHL · 1h 07m · leaves 06:00 5%

ATL · 49m · leaves 05:30 6%

Afternoon and evening

JFK · 49m · leaves 20:14 33%

ATL · 48m · leaves 17:56 34%

PHL · 1h 00m · leaves 19:37 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.


Delta DL 5703 BOS 06:35 → BWI Southwest WN 762 BWI 10:50 → BUF Connection details →	2h 30m	5h 30m	98%	81%
Delta DL 5626 BOS 06:25 → CLT American AA 1616 CLT 11:10 → BUF Connection details →	2h 14m	6h 30m	95%	80%
American AA 1239 BOS 08:58 → ORD United UA 2226 ORD 13:55 → BUF Connection details →	2h 55m	7h 43m	96%	78%

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