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

No clear winner: United’s MHT → IAD flights land within a few points of 4 in 5 on time whatever the hour.

Nonstops (seasonal or thin)


United	MHT	IAD	1h 58m	80%	3.1%	721	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	MHT 05:38 → CLT 08:03AA 5035 · flown by PSA	3h 02m Charlotte	CLT 11:05 → IAD 12:38AA 5220 · flown by PSA	7h 00m	96%	75%
American Details →	MHT 12:07 → CLT 14:36AA 5294 · flown by PSA	3h 28m Charlotte	CLT 18:04 → IAD 19:33AA 2953	7h 26m	97%	60%
American Details →	MHT 17:10 → CLT 19:40AA 5463 · flown by PSA	3h 05m Charlotte	CLT 22:45 → IAD 00:10 +1AA 1242	7h 00m	85%	32%
Tight connection: often missed
American Details →	MHT 17:10 → CLT 19:40AA 5463 · flown by PSA	51m Charlotte	CLT 20:31 → IAD 22:05AA 5549 · flown by PSA	4h 55m	44%	23%

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.

Afternoon and evening

CLT · 51m · leaves 17:10 56%

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 4150 MHT 07:04 → ORD United UA 1869 ORD 11:07 → IAD Connection details →	2h 07m	7h 08m	97%	85%
American AA 5976 MHT 10:32 → PHL United UA 3593 PHL 15:10 → IAD Connection details →	3h 01m	5h 46m	97%	79%
American AA 5035 MHT 05:38 → CLT United UA 4012 CLT 10:27 → IAD Connection details →	2h 24m	6h 17m	95%	79%

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