If you are flying into or out of Boston Logan International Airport (BOS) this fall, your travel plans are at high risk for delays. Starting August 31, Runway 09-27 shuts down for 75 days to undergo critical safety upgrades, heavily reducing the airport’s capacity just in time for the peak holiday season.

Do not wait to see if your flight gets delayed. With fewer runways available, a single bad weather day will trigger a massive backlog. This guide breaks down exactly what the Boston Logan Airport runway 27 closure means for your trip and how you can reroute, rebook, and bypass the chaos.

Why is Boston Logan Runway 09-27 Closing?

The closure is not routine maintenance; it is a major safety overhaul required by the Federal Aviation Administration (FAA). Massachusetts Port Authority (Massport) is installing an Engineered Material Arresting System (EMAS) at the end of the runway.

Think of an EMAS as a massive, high-tech runaway truck ramp for airplanes. It is a specially designed surface built over the water that safely stops an aircraft if it overshoots the runway. It is a critical upgrade, but it means shutting down a vital artery of an airport that handles roughly 120,000 passengers a day.

The Real Impact: What the 75-Day Closure Means for You

When an airport loses a runway, the ripple effect is immediate. Flights are shifted to the remaining five active runways, but there is only so much space. Here is what you should expect if you are flying between August 31 and mid-November.

1. Massive Cascading Delays: If a morning flight is delayed, the reduced runway capacity means the airport cannot catch up. Afternoon and evening flights will face severe delays.
2. Weather Vulnerability: Boston fall weather is unpredictable. Air Traffic Control will have fewer routing options during storms, meaning flights will be grounded faster and stay grounded longer.
3. Holiday Surges: This 75-day window hits major travel peaks, including Labor Day, Columbus/Indigenous Peoples’ Day, and the start of the Thanksgiving rush.

1.Book the First Flight Out:

Early morning flights are significantly less likely to face delays because the planes are usually already at the airport overnight. Avoid afternoon flights when the backlog peaks.

2.Fly Non-Stop When Possible:

If Boston is your connection, a delay could make you miss your onward flight. Direct flights eliminate this risk.

3.Pack Carry-On Only:

Checked baggage systems get overwhelmed during mass delays. Keep your bags with you so you can easily switch to a different flight or airline if needed.

The Backup Plan: Alternative Airports to Boston Logan

I always have a Plan B when I travel during major infrastructure projects. If Boston Logan is experiencing severe delays, airlines and Air Traffic Control will divert flights. You can also proactively book your flights into these nearby regional airports to avoid the Boston Logan Airport closures altogether.

If your flight into BOS is delayed or canceled while you are already traveling, get on the phone with your airline immediately and ask to be rerouted to one of these alternative airports.

How to Check Your Flight Status Easily

Do not rely on the departure boards at the airport. They are often the last to update.

Download your airline’s official app for real-time alerts. I also highly recommend using a live flight tracker app like Flightradar24. You can track the plane assigned to your flight before it even arrives in Boston. If you see your inbound plane is delayed leaving its previous destination, you know your flight out of Boston will also be delayed, giving you a head start to rebook.

The Boston Logan Airport runway 09-27 closed status will test travelers this fall. Expect the flight disruptions from August 31, plan your connections with a massive buffer, and if you can, fly into a regional alternative.