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 5% of the time at 8 am and 1 time in 3 at 8 pm.

Nonstops


Delta	PHL	BOS	1h 32m	81%	3.4%	1,234	Flying now
American	PHL	BOS	1h 27m	74%	2.8%	2,809	Flying now
JetBlue	PHL	BOS	1h 21m	74%	3.4%	892	Flying now
Frontier	PHL	BOS	1h 29m	91%	0.0%	43	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 →	PHL 06:00 → CLT 07:53AA 3139	1h 02m Charlotte	CLT 08:55 → BOS 11:08AA 1533	5h 08m	95%	88%
United Details →	PHL 06:10 → IAD 07:19UA 3693 · flown by Republic	1h 16m Dulles	IAD 08:35 → BOS 10:20UA 641	4h 10m	97%	87%
American Details →	PHL 08:44 → BUF 10:18AA 5925 · flown by Piedmont	1h 04m Buffalo	BUF 11:22 → BOS 12:55AA 4666 · flown by Republic	4h 13m	94%	85%
American Details →	PHL 08:50 → ROC 10:21AA 6126 · flown by Piedmont	1h 39m Rochester	ROC 12:00 → BOS 13:26AA 4171 · flown by Envoy	4h 36m	99%	85%
Delta Details →	PHL 05:15 → ATL 07:22DL 1269	2h 38m Atlanta	ATL 10:00 → BOS 12:44DL 855	7h 29m	98%	82%
American Details →	PHL 05:15 → ORD 06:38AA 1652	1h 52m Chicago	ORD 08:30 → BOS 12:07AA 4106 · flown by Envoy	6h 52m	94%	82%
Delta Details →	PHL 06:25 → ATL 08:32DL 1152	2h 38m Atlanta	ATL 11:10 → BOS 13:47DL 862	7h 22m	99%	81%
United Details →	PHL 06:00 → ORD 07:30UA 660	1h 45m Chicago	ORD 09:15 → BOS 12:57UA 1117	6h 57m	98%	80%
Tight connection: often missed
American Details →	PHL 16:25 → MIA 19:27AA 3306	53m Miami	MIA 20:20 → BOS 23:41AA 2539	7h 16m	70%	40%
American Details →	PHL 14:26 → MIA 17:27AA 3265	53m Miami	MIA 18:20 → BOS 21:45AA 1074	7h 19m	58%	34%
American Details →	PHL 17:40 → ORD 19:26AA 1012	1h 03m Chicago	ORD 20:29 → BOS 00:05 +1AA 2682	6h 25m	60%	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

IAD · 1h 16m · leaves 06:10 3%

CLT · 1h 02m · leaves 06:00 5%

BUF · 1h 04m · leaves 08:44 6%

Afternoon and evening

CLT · 48m · leaves 19:35 39%

ORD · 1h 03m · leaves 17:40 40%

MIA · 53m · leaves 14:26 42%

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.


Southwest WN 3227 PHL 06:12 → STL American AA 3814 STL 09:39 → BOS Connection details →	2h 07m	7h 12m	96%	83%
American AA 3139 PHL 06:00 → CLT Delta DL 5626 CLT 09:40 → BOS Connection details →	1h 47m	6h 08m	95%	79%
American AA 1652 PHL 05:15 → ORD United UA 1117 ORD 09:15 → BOS Connection details →	2h 37m	7h 42m	94%	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