How winter snow affects
flights at BOS.
Boston Logan International (BOS) in Boston. Historical delay data, cancellation risk, airline performance, and what to do when winter snow hits. Season: Jan - Dec.
Winter Snow Impact at BOS
Based on historical flight performance data during Jan - Dec
79%
On-time rate
during winter snow
2.3%
Cancellation
rate
73m
Avg delay
when late
No change
On-time rate drop
vs off-peak months
8 snow days/month
During
Jan - Dec
What happens at BOS during winter snow
Winter snow and ice storms cause de-icing queues, runway closures, and cascading delays across hub networks. Airports with strong winter infrastructure recover faster, but even the best-equipped hubs struggle during major storms.
Historical impact
During Jan - Dec, BOS's on-time rate drops to 79% — compared to 76% during non-peak months. Cancellations rise from 1.8% to 2.3% during peak winter snow months.
Typical recovery time
4-12 hours after snow stops; 1-2 days for major storms. De-icing queues create a backlog even after runways reopen.
Which airlines handle winter snow best at BOS?
All airlines are subject to the same runway closures and ground stops, but some handle disruption better than others — faster rebooking, better crew scheduling, and more de-icing capacity.
Best at BOS
Allegiant Air
90% on-time · 51m avg delay
Most delayed
Hawaiian Airlines
70% on-time · 66m avg delay
Based on overall performance at BOS. Individual flight performance varies by route and time of day.
Tips for flying through BOS during winter snow
Book the earliest flight
The first departure of the day at BOS almost always leaves on time — the de-icing queue hasn't built up yet and the runway has been cleared overnight.
Check weather waivers 48 hours out
Airlines post free rebooking waivers before major winter storms. If you see one, rebook immediately to dates outside the storm window.
Avoid connecting through this airport
If BOS is your connection, consider a direct flight or routing through a warmer hub. A missed connection in a snowstorm means an overnight stay.
Pack essentials in your carry-on
If you're checked through to a connection, your bag may not make it. Keep medications, charger, and a change of clothes with you.
Get a free flight briefing for BOS
Weather risk, delay probability, and what to expect — delivered to your inbox before you fly.
Common questions
How does winter snow affect flights at BOS?
During winter snow season, BOS averages a 79% on-time rate with an average delay of 73 minutes when flights are late. The cancellation rate during peak months is 2.3%.
What months are worst for winter snow at BOS?
Winter Snow at BOS peaks during Nov - Mar. These months show measurably higher delay and cancellation rates compared to the rest of the year.
Which airline handles winter snow best at BOS?
Based on historical data, Allegiant Air has the best on-time performance at BOS with a 90% on-time rate. However, all airlines are subject to the same runway and ground stop constraints during severe weather.
Do I get a refund if my BOS flight is cancelled due to winter snow?
Yes. Under federal law (14 CFR Part 260), you are entitled to a full cash refund if your flight is cancelled — regardless of the reason, including weather. The airline must refund to your original payment method within 7 business days for credit cards.
How long do winter snow delays last at BOS?
4-12 hours after snow stops; 1-2 days for major storms. De-icing queues create a backlog even after runways reopen.
Other airports affected by winter snow