Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: airlines and hours on this route all land within a few points of 87% on time.

Nonstops


Southwest	RDU	BWI	1h 10m	87%	2.2%	1,788	Flying now
Spirit	RDU	BWI	–	100%few flights	0.0%	3	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	RDU 07:15 → MCO 08:55WN 3430	2h 00m Orlando	MCO 10:55 → BWI 13:10WN 193	5h 55m	100%	85%
Delta Details →	RDU 05:20 → ATL 06:44DL 1552	2h 11m Atlanta	ATL 08:55 → BWI 10:47DL 801	5h 27m	98%	85%
Delta Details →	RDU 07:30 → ATL 08:59DL 2478	2h 11m Atlanta	ATL 11:10 → BWI 13:03DL 2711	5h 33m	97%	84%
American Details →	RDU 05:01 → CLT 06:00AA 1903	2h 00m Charlotte	CLT 08:00 → BWI 09:26AA 1635	4h 25m	98%	84%
Delta Details →	RDU 05:33 → DTW 07:18DL 1388	2h 52m Detroit	DTW 10:10 → BWI 11:47DL 1546	6h 14m	98%	83%
Delta Details →	RDU 08:50 → ATL 10:20DL 1530	3h 42m Atlanta	ATL 14:02 → BWI 15:53DL 2799	7h 03m	99%	78%
Delta Details →	RDU 09:54 → DTW 11:36DL 1427	3h 33m Detroit	DTW 15:09 → BWI 16:45DL 2480	6h 51m	100%	77%
Delta Details →	RDU 07:00 → BOS 09:02DL 1054	2h 07m Boston	BOS 11:09 → BWI 12:49DL 5668 · flown by Republic	5h 49m	98%	76%
Tight connection: often missed
American Details →	RDU 20:08 → CLT 21:24AA 2394	1h 21m Charlotte	CLT 22:45 → BWI 00:14 +1AA 1318	4h 06m	70%	49%
American Details →	RDU 16:15 → CLT 17:34AA 2402	1h 27m Charlotte	CLT 19:01 → BWI 20:36AA 1495	4h 21m	73%	47%
American Details →	RDU 17:30 → MIA 19:49AA 2406	1h 28m Miami	MIA 21:17 → BWI 23:54AA 3216	6h 24m	71%	40%

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

ATL · 1h 07m · leaves 06:20 4%

CLT · 1h 16m · leaves 08:54 6%

BNA · 50m · leaves 10:40 12%

Afternoon and evening

DTW · 1h 09m · leaves 18:40 14%

ATL · 1h 03m · leaves 19:59 20%

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 1903 RDU 05:01 → CLT Southwest WN 4695 CLT 07:50 → BWI Connection details →	1h 50m	4h 19m	96%	87%
Delta DL 1552 RDU 05:20 → ATL Southwest WN 186 ATL 10:15 → BWI Connection details →	3h 31m	6h 50m	98%	84%
Delta DL 1279 RDU 06:25 → TPA Southwest WN 1016 TPA 10:40 → BWI Connection details →	2h 22m	6h 35m	97%	84%

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