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 7% of the time at 9 am and 1 time in 3 at 10 pm.

Nonstops (seasonal or thin)


JetBlue	BOS	BZN	4h 59m	72%	5.6%	142	Flying now
Delta	BOS	BZN	5h 15m	69%	4.6%	65	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Bozeman on time. Total trip = scheduled departure to arrival, layover included (Bozeman is 2 h behind Boston). Layovers up to 4 hours. Pick a connection for the details.


United Details →	BOS 06:21 → LAX 09:35UA 360	3h 15m Los Angeles	LAX 12:50 → BZN 16:24UA 2212	12h 03m	100%	90%
Delta Details →	BOS 07:15 → MSP 09:30DL 1138	3h 47m Minneapolis	MSP 13:17 → BZN 14:48DL 2946	9h 35m	99%	86%
Alaska Details →	BOS 06:03 → PDX 09:19AS 311	1h 11m Portland	PDX 10:30 → BZN 13:10AS 2022 · flown by Horizon	9h 07m	94%	85%
United Details →	BOS 07:45 → DEN 10:19UA 647	3h 25m Denver	DEN 13:44 → BZN 15:33UA 513	9h 48m	100%	83%
United Details →	BOS 08:15 → ORD 10:12UA 1834	2h 33m Chicago	ORD 12:45 → BZN 15:13UA 623	8h 58m	100%	82%
Delta Details →	BOS 11:15 → SLC 14:24DL 464	2h 56m Salt Lake City	SLC 17:20 → BZN 18:44DL 3676 · flown by SkyWest	9h 31m	96%	82%
Delta Details →	BOS 05:30 → ATL 08:15DL 2242	2h 54m Atlanta	ATL 11:09 → BZN 13:11DL 406	9h 43m	100%	80%
United Details →	BOS 06:00 → ORD 07:58UA 1414	1h 12m Chicago	ORD 09:10 → BZN 11:44UA 224	7h 44m	97%	77%
Tight connection: often missed
Delta Details →	BOS 18:45 → SLC 22:11DL 445	54m Salt Lake City	SLC 23:05 → BZN 00:23 +1DL 2046	7h 38m	66%	55%
Delta Details →	BOS 15:40 → SEA 19:11DL 2889	48m Seattle	SEA 19:59 → BZN 22:48DL 4039 · flown by SkyWest	9h 08m	50%	42%
United Details →	BOS 17:00 → ORD 19:00UA 2040	1h 15m Chicago	ORD 20:15 → BZN 22:43UA 533	7h 43m	73%	41%

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 12m · leaves 06:00 3%

JFK · 1h 02m · leaves 05:15 5%

DEN · 1h 13m · leaves 07:45 6%

Afternoon and evening

SLC · 54m · leaves 18:45 34%

SEA · 48m · leaves 15:40 50%

DEN · 1h 00m · leaves 17:30 71%

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.


JetBlue B6 287 BOS 06:00 → LAX United UA 2212 LAX 12:50 → BZN Connection details →	3h 36m	12h 24m	99%	88%
Southwest WN 4156 BOS 06:25 → DEN United UA 1248 DEN 11:32 → BZN Connection details →	2h 42m	8h 55m	100%	86%
Delta DL 499 BOS 07:45 → DEN United UA 513 DEN 13:44 → BZN Connection details →	3h 25m	9h 48m	99%	82%

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