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 5% of the time at 8 am and almost half the time at 9 pm.

Nonstops


United	BOS	IAH	4h 20m	84%	1.4%	1,561	Flying now
JetBlue	BOS	IAH	4h 10m	73%	2.6%	460	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	BOS 08:15 → ORD 10:12UA 1834	2h 28m Chicago	ORD 12:40 → IAH 15:40UA 1448	8h 25m	100%	88%
United Details →	BOS 06:21 → LAX 09:35UA 360	2h 19m Los Angeles	LAX 11:54 → IAH 17:22UA 2086	12h 01m	100%	86%
United Details →	BOS 08:00 → EWR 09:23UA 570	3h 13m Newark	EWR 12:36 → IAH 15:34UA 2204	8h 34m	99%	85%
United Details →	BOS 05:45 → IAD 07:23UA 1734	1h 17m Dulles	IAD 08:40 → IAH 10:59UA 1524	6h 14m	99%	85%
United Details →	BOS 06:00 → ORD 07:58UA 1414	2h 27m Chicago	ORD 10:25 → IAH 13:23UA 2638	8h 23m	100%	84%
Delta Details →	BOS 06:50 → ATL 09:33DL 695	2h 57m Atlanta	ATL 12:30 → IAH 13:38DL 1572	7h 48m	98%	82%
Delta Details →	BOS 05:30 → ATL 08:15DL 2242	1h 50m Atlanta	ATL 10:05 → IAH 11:18DL 1682	6h 48m	100%	81%
United Details →	BOS 09:25 → IAD 11:07UA 2098	1h 43m Dulles	IAD 12:50 → IAH 15:11UA 1535	6h 46m	97%	80%
Tight connection: often missed
Delta Details →	BOS 17:15 → DTW 19:39DL 1432	46m Detroit	DTW 20:25 → IAH 22:24DL 1633	6h 09m	55%	43%
United Details →	BOS 17:00 → ORD 19:00UA 2040	1h 02m Chicago	ORD 20:02 → IAH 22:59UA 2813	6h 59m	57%	30%
American Details →	BOS 17:38 → ORD 19:59AA 1592	1h 08m Chicago	ORD 21:07 → IAH 23:51AA 3144	7h 13m	42%	19%

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

IAD · 1h 17m · leaves 05:45 1%

PHL · 1h 20m · leaves 06:00 4%

DTW · 1h 01m · leaves 05:30 5%

Afternoon and evening

SFO · 48m · leaves 20:20 55%

ORD · 1h 08m · leaves 17:38 58%

SEA · 50m · leaves 19:44 63%

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 5678 BOS 08:15 → PIT United UA 1964 PIT 13:05 → IAH Connection details →	2h 46m	7h 53m	98%	96%
Delta DL 5692 BOS 07:25 → DCA United UA 382 DCA 12:59 → IAH Connection details →	3h 41m	8h 53m	100%	88%
American AA 418 BOS 06:05 → CLT United UA 6236 CLT 11:48 → IAH Connection details →	3h 18m	8h 29m	98%	88%

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