Which airline is most reliable for BOS (Boston) to MIA (Miami)?

The most reliable airline on the BOS to MIA route is American Airlines, with an on-time arrival rate of 83%.

How often are flights delayed from BOS to MIA?

About 21% of flights from BOS to MIA experience delays. 79% arrive on time.

What's the average delay on BOS to MIA flights?

When flights from BOS to MIA are delayed, the average delay is approximately 76 minutes.

Is a short connection safe after a BOS to MIA flight?

With 79% of BOS to MIA flights arriving on time and an average delay of 76 minutes when late, a connection under 60 minutes at MIA is risky. We recommend at least 75-90 minutes for domestic connections after this route.

BOS → MIA

BOS (Boston) to MIA (Miami)

BOS (Boston) to MIA (Miami) flights arrive on time 79% of the time. The most reliable airline on this route is American Airlines at 83%. The average delay is 76 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated July 2026.

BOS → MIA on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

This route is on time most of the time. About 79% of flights arrive on schedule.

Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Accurate?

American Airlines is significantly more reliable on this route at 83% on time vs Spirit Airlines at 64%.

Airline Comparison

American Airlines leads at 83% on time; Spirit Airlines trails at 64%.

Accurate?

Good to know

Departing from BOS

77% on time

Expect ~21 min sitting on the taxiway after your gate pushes back. BOS has long runway queues.

TSA is currently ~9 min. Best time: 4 AM (about 5 min).

More about BOS →

Arriving at MIA

76% on time

When flights into MIA are late, the average delay is 77 minutes. Build buffer if you have ground plans.

If connecting at MIA: TSA is ~29 min right now. Allow at least 60 minutes for a domestic connection.

More about MIA →Connection times at MIA →

Flight cancelled or delayed?

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Flying out of BOS? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

BOS Airport MIA Airport

Check the return: MIA → BOS

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Data last updated July 2026. Source: Bureau of Transportation Statistics.