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

No nonstop, and no clear pattern: the best connection reaches Dallas on time 85% of the time.

Best connections, any airlines

Ranked by chance you reach Dallas on time. Total trip = scheduled departure to arrival, layover included (Dallas is 1 h behind Dulles). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	IAD 06:00 → ATL 07:46DL 2127	2h 29m Atlanta	ATL 10:15 → DAL 11:24DL 1115	6h 24m	97%	85%
United + Deltatwo ticketsDetails →	IAD 08:15 → ATL 10:14UA 2739	3h 45m Atlanta	ATL 13:59 → DAL 15:03DL 512	7h 57m	98%	83%
United + Southwesttwo ticketsDetails →	IAD 08:30 → BNA 09:29UA 1366	2h 51m Nashville	BNA 12:20 → DAL 14:15WN 5046	6h 45m	96%	81%
United + Southwesttwo ticketsDetails →	IAD 06:30 → DEN 08:22UA 2031	1h 43m Denver	DEN 10:05 → DAL 13:10WN 1518	7h 40m	100%	73%
Frontier + Deltatwo ticketsDetails →	IAD 11:17 → ATL 13:18F9 1081	3h 20m Atlanta	ATL 16:38 → DAL 17:55DL 2780	7h 38m	96%	72%
United + Southwesttwo ticketsDetails →	IAD 08:19 → LGA 09:48UA 6116 · flown by Mesa	2h 42m New York	LGA 12:30 → DAL 15:05WN 4570	7h 46m	96%	69%
United + Southwesttwo ticketsDetails →	IAD 13:00 → LAS 15:09UA 2156	2h 11m Las Vegas	LAS 17:20 → DAL 22:10WN 2220	10h 10m	97%	68%
American + Southwesttwo ticketsDetails →	IAD 06:33 → CLT 08:00AA 1216	2h 35m Charlotte	CLT 10:35 → DAL 12:05WN 148	6h 32m	91%	66%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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