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 4% of the time at 7 am and 2 times in 5 at 5 pm.

Nonstops


Delta	BOS	RDU	2h 21m	79%	2.7%	1,568	Flying now
JetBlue	BOS	RDU	2h 10m	73%	3.0%	1,092	Flying now
Frontier	BOS	RDU	2h 09m	73%	0.0%	168	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	BOS 05:30 → BWI 07:05WN 727	1h 05m Baltimore	BWI 08:10 → RDU 09:30WN 1067	4h 00m	93%	91%
Delta Details →	BOS 05:30 → ATL 08:15DL 2242	2h 59m Atlanta	ATL 11:14 → RDU 12:44DL 1488	7h 14m	100%	89%
United Details →	BOS 06:05 → EWR 07:29UA 1833	2h 31m Newark	EWR 10:00 → RDU 11:52UA 3631 · flown by Republic	5h 47m	98%	89%
Southwest Details →	BOS 05:50 → STL 07:45WN 752	2h 10m St Louis	STL 09:55 → RDU 12:45WN 297	6h 55m	100%	88%
American Details →	BOS 05:10 → ORD 07:04AA 3324	2h 25m Chicago	ORD 09:29 → RDU 12:48AA 4756 · flown by Republic	7h 38m	99%	86%
American Details →	BOS 06:05 → CLT 08:30AA 418	2h 34m Charlotte	CLT 11:04 → RDU 12:02AA 2363	5h 57m	99%	86%
American Details →	BOS 06:00 → DCA 07:44AA 2159	3h 40m Washington	DCA 11:24 → RDU 12:44AA 4700 · flown by Republic	6h 44m	100%	86%
Delta Details →	BOS 06:50 → ATL 09:33DL 695	3h 29m Atlanta	ATL 13:02 → RDU 14:29DL 2026	7h 39m	99%	84%
Tight connection: often missed
American Details →	BOS 13:01 → ORD 15:10AA 4386 · flown by Republic	49m Chicago	ORD 15:59 → RDU 19:23AA 4518 · flown by Republic	6h 22m	73%	54%
Delta Details →	BOS 19:15 → ATL 22:19DL 973	51m Atlanta	ATL 23:10 → RDU 00:42 +1DL 2938	5h 27m	73%	47%
American Details →	BOS 17:38 → ORD 19:59AA 1592	57m Chicago	ORD 20:56 → RDU 23:59AA 2167	6h 21m	35%	18%

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 12m · leaves 06:00 3%

IAD · 58m · leaves 05:45 4%

LGA · 1h 15m · leaves 06:00 5%

Afternoon and evening

PHL · 46m · leaves 15:06 41%

DCA · 46m · leaves 17:23 63%

ORD · 57m · leaves 17:38 65%

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 5764 BOS 06:25 → EWR United UA 3631 EWR 10:00 → RDU Connection details →	2h 05m	5h 27m	96%	85%
Delta DL 5703 BOS 06:35 → BWI Southwest WN 4442 BWI 11:35 → RDU Connection details →	3h 15m	6h 10m	99%	85%
Delta DL 5687 BOS 06:00 → DCA American AA 4700 DCA 11:24 → RDU Connection details →	3h 35m	6h 44m	99%	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