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 70-minute layover misses 2% of the time at 11 am and 36% of the time at 4 pm.

Nonstops


Delta	BOS	ATL	2h 57m	82%	1.8%	3,688	Flying now
JetBlue	BOS	ATL	2h 57m	70%	3.1%	846	Flying now
Frontier	BOS	ATL	3h 06m	67%	3.3%	427	Flying now
Spirit	BOS	ATL	2h 32m	58%few flights	0.0%	12	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	BOS 05:50 → STL 07:45WN 752	2h 15m St Louis	STL 10:00 → ATL 12:35WN 236	6h 45m	100%	92%
Delta Details →	BOS 06:20 → RDU 08:28DL 2066	2h 47m Raleigh/Durham	RDU 11:15 → ATL 12:42DL 1699	6h 22m	97%	87%
Delta Details →	BOS 08:25 → CLE 10:35DL 5674 · flown by Republic	2h 02m Cleveland	CLE 12:37 → ATL 14:29DL 2978	6h 04m	100%	87%
American Details →	BOS 06:00 → PHL 07:37AA 1146	1h 55m Philadelphia	PHL 09:32 → ATL 11:53AA 4338 · flown by Republic	5h 53m	98%	87%
Delta Details →	BOS 08:15 → PIT 10:19DL 5678 · flown by Republic	1h 31m Pittsburgh	PIT 11:50 → ATL 13:35DL 1363	5h 25m	96%	86%
Delta Details →	BOS 09:10 → MKE 10:54DL 5614 · flown by Republic	2h 02m Milwaukee	MKE 12:56 → ATL 16:04DL 1151	6h 54m	98%	86%
Southwest Details →	BOS 05:25 → MDW 07:00WN 3239	1h 55m Chicago	MDW 08:55 → ATL 11:45WN 4154	6h 20m	100%	86%
Southwest Details →	BOS 05:30 → BWI 07:05WN 727	1h 15m Baltimore	BWI 08:20 → ATL 10:20WN 3931	4h 48m	95%	86%
Tight connection: often missed
American Details →	BOS 15:15 → MIA 18:58AA 1565	1h 06m Miami	MIA 20:04 → ATL 22:09AA 1045	6h 54m	70%	39%
JetBlue Details →	BOS 12:42 → JFK 14:04B6 717	1h 04m New York	JFK 15:08 → ATL 17:38B6 419	4h 56m	65%	38%
American Details →	BOS 13:01 → ORD 15:10AA 4386 · flown by Republic	49m Chicago	ORD 15:59 → ATL 19:02AA 1375	6h 02m	73%	32%

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

IAH · 1h 20m · leaves 07:25 2%

JFK · 1h 15m · leaves 06:06 4%

ORD · 1h 09m · leaves 06:00 4%

Afternoon and evening

FLL · 1h 05m · leaves 12:30 36%

DCA · 58m · leaves 17:50 38%

BWI · 1h 10m · leaves 17:20 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 752 BOS 05:50 → STL Delta DL 1571 STL 09:24 → ATL Connection details →	1h 39m	6h 12m	97%	89%
JetBlue B6 1883 BOS 06:30 → RDU Delta DL 1699 RDU 11:15 → ATL Connection details →	2h 42m	6h 12m	97%	87%
Frontier F9 3057 BOS 08:42 → RDU Delta DL 1488 RDU 13:49 → ATL Connection details →	2h 57m	6h 38m	96%	86%

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