How often are BWI to BOS flights on time?

Flights from Baltimore (BWI) to Boston (BOS) arrive on time 83% of the time across 20,953 flights of official data.

Which airline is most reliable on the BWI to BOS route?

Delta Air Lines has the best on-time record on this route at 90% across 3,619 flights.

Route reliability

Flights from Baltimore to Boston arrive on time 83% of the time across 20,953 flights. Here’s how each airline really performs.

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On-time rate

20,953 flights

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg BOS → BWI.

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A practical checklist for booking the flight that gets you there — not just the cheap one.

Nonstop vs. Connecting Flights: The Reliability Trade-off

A stop multiplies the ways a trip can break. When it's worth it — and how to de-risk it.

Do Morning Flights Really Have Fewer Delays?

Yes — and there's a clear reason. How delays snowball through the day.

Are Some Airlines Really More Reliable Than Others?

The reliability gap between airlines is real — here's what actually drives it.

Score real BWI–BOS flights on reliability, weather, and connection safety — not just price.