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 7 in 10 on time.

Nonstops


Delta	RSW	BOS	3h 13m	76%	1.3%	552	Flying now
JetBlue	RSW	BOS	3h 12m	70%	2.9%	1,566	Flying now
Spirit	RSW	BOS	3h 05m	34%	11.8%	76	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	RSW 05:10 → MDW 07:00WN 1243	2h 10m Chicago	MDW 09:10 → BOS 12:28WN 1405	7h 18m	100%	92%
American Details →	RSW 06:22 → CLT 08:20AA 1097	2h 58m Charlotte	CLT 11:18 → BOS 13:33AA 1611	7h 11m	99%	88%
Delta Details →	RSW 05:37 → ATL 07:23DL 1385	1h 12m Atlanta	ATL 08:35 → BOS 11:14DL 2432	5h 37m	95%	86%
Southwest Details →	RSW 06:25 → DEN 08:20WN 1739	1h 40m Denver	DEN 10:00 → BOS 16:05WN 3690	9h 40m	100%	83%
Delta Details →	RSW 06:45 → ATL 08:33DL 1361	1h 27m Atlanta	ATL 10:00 → BOS 12:44DL 855	5h 59m	97%	82%
United Details →	RSW 07:00 → IAH 08:33UA 2773	1h 17m Houston	IAH 09:50 → BOS 14:48UA 2393	7h 48m	100%	82%
Southwest Details →	RSW 06:00 → STL 07:30WN 3471	2h 35m St Louis	STL 10:05 → BOS 13:40WN 3891	7h 40m	100%	82%
Southwest Details →	RSW 06:30 → BWI 08:50WN 3463	1h 50m Baltimore	BWI 10:40 → BOS 12:10WN 887	5h 40m	100%	80%
Tight connection: often missed
American Details →	RSW 14:25 → DFW 16:26AA 2438	1h 01m Dallas-Fort Worth	DFW 17:27 → BOS 22:17AA 2306	7h 52m	71%	38%
American Details →	RSW 18:24 → DCA 20:59AA 2454	1h 31m Washington	DCA 22:30 → BOS 23:59AA 4051 · flown by Envoy	5h 35m	74%	34%
Southwest Details →	RSW 18:55 → BWI 21:30WN 4294	1h 00m Baltimore	BWI 22:30 → BOS 00:10 +1WN 892	5h 10m	56%	26%

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

ORD · 1h 02m · leaves 07:00 4%

ATL · 1h 12m · leaves 05:37 5%

JFK · 54m · leaves 06:02 20%

Afternoon and evening

DTW · 1h 09m · leaves 17:46 22%

DFW · 1h 01m · leaves 14:25 29%

BWI · 1h 00m · leaves 18:55 44%

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.


Southwest WN 3471 RSW 06:00 → STL American AA 3814 STL 09:39 → BOS Connection details →	2h 09m	7h 24m	98%	85%
American AA 803 RSW 06:15 → ORD United UA 1606 ORD 10:25 → BOS Connection details →	1h 52m	7h 47m	100%	77%
American AA 2428 RSW 11:50 → DFW Delta DL 303 DFW 17:00 → BOS Connection details →	3h 17m	10h 07m	93%	67%

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