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 75-minute layover misses 1% of the time at 10 am and 1 time in 3 at 7 pm.

Nonstops


United	IAD	ORD	2h 14m	76%	1.0%	2,085	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	IAD 08:25 → CHS 10:11UA 1108	1h 20m Charleston	CHS 11:31 → ORD 13:09UA 592	5h 44m	99%	87%
Delta Details →	IAD 06:00 → DTW 07:40DL 3826 · flown by SkyWest	2h 35m Detroit	DTW 10:15 → ORD 10:50DL 3673 · flown by SkyWest	5h 50m	96%	86%
United Details →	IAD 06:30 → IAH 08:39UA 1935	56m Houston	IAH 09:35 → ORD 12:29UA 2124	6h 59m	100%	85%
American Details →	IAD 06:33 → CLT 08:00AA 1216	3h 01m Charlotte	CLT 11:01 → ORD 12:19AA 2908	6h 46m	97%	85%
United Details →	IAD 08:15 → RSW 10:53UA 1406	1h 35m Fort Myers	RSW 12:28 → ORD 14:53UA 2494	7h 38m	96%	85%
United Details →	IAD 06:30 → DEN 08:22UA 2031	1h 13m Denver	DEN 09:35 → ORD 13:15UA 2329	7h 45m	100%	83%
United Details →	IAD 08:20 → FLL 11:07UA 1825	1h 19m Fort Lauderdale	FLL 12:26 → ORD 14:55UA 1755	7h 35m	96%	83%
United Details →	IAD 08:25 → ROC 09:52UA 4615 · flown by GoJet	2h 33m Rochester	ROC 12:25 → ORD 13:38UA 3494 · flown by Republic	6h 13m	100%	83%
Tight connection: often missed
United Details →	IAD 17:42 → EWR 19:10UA 1831	1h 09m Newark	EWR 20:19 → ORD 22:06UA 546	5h 24m	65%	42%
United Details →	IAD 17:25 → BOS 19:14UA 688	1h 01m Boston	BOS 20:15 → ORD 22:15UA 2229	5h 50m	64%	35%
Delta Details →	IAD 12:29 → JFK 13:58DL 5835 · flown by Republic	1h 02m New York	JFK 15:00 → ORD 17:11DL 4783 · flown by Endeavor	5h 42m	45%	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.

Morning

CHS · 1h 20m · leaves 08:25 1%

ORF · 1h 09m · leaves 08:30 3%

CLE · 1h 12m · leaves 08:20 4%

Afternoon and evening

DTW · 53m · leaves 17:29 28%

EWR · 1h 09m · leaves 17:42 35%

BOS · 1h 01m · leaves 17:25 36%

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 3826 IAD 06:00 → DTW American AA 4103 DTW 10:33 → ORD Connection details →	2h 53m	6h 08m	96%	91%
United UA 1108 IAD 08:25 → CHS American AA 2452 CHS 12:44 → ORD Connection details →	2h 33m	6h 53m	99%	86%
United UA 4188 IAD 08:15 → DAY American AA 3786 DAY 12:29 → ORD Connection details →	2h 41m	5h 39m	89%	83%

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