Cheap Flights from Boston (BOS) to Siena (SAY)

Popular airlines from Logan International Airport (BOS) to Ampugnano Airport (SAY)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key
Flights from Boston (BOS) to Siena (SAY)
Origin airport
Logan Intl.
Destination airport
Ampugnano
Distance
3987 mi

Boston to Siena Flights

The cheapest times to fly from Boston to Siena

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to Siena are during the month of . You can find some of the cheapest flights from Boston to Siena with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boston to Siena

Sunday is one of the best days to book for cheap flights from Boston to Siena: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boston to Siena

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to Siena in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to Siena flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to Siena airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Siena (SAY-Ampugnano) cost?
Lock in a cheap one-way flight or cheap return flight from Logan Intl. Airport (BOS) to Siena (SAY-Ampugnano) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Logan Intl. Airport (BOS) to Siena (SAY-Ampugnano)?
is the most affordable month to fly from BOS to SAY. Avoiding peak travel times is often the key to finding a great deal.
What is the cheapest airline that flies from Logan Intl. Airport (BOS) to Siena (SAY-Ampugnano)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest BOS to SAY flight.
How many flights per day from Logan Intl. Airport (BOS) to Siena (SAY-Ampugnano)?
You'll need to hop on a flight with a layover when traveling from Logan Intl. Airport (BOS) to Siena (SAY-Ampugnano). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from BOS to SAY?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary based on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Siena (SAY-Ampugnano)?
To avoid potential delays on the Logan Intl. Airport (BOS) to Siena (SAY-Ampugnano) route, aim to travel before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Siena (SAY-Ampugnano) last-minute?
Last-minute bookings from BOS to SAY are typically more expensive. To secure the best prices, start looking for flights ahead of time. That being said, if you're flexible with your travel dates, you may land a cheap fare right before your trip.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Siena (SAY-Ampugnano)?
If you booked your BOS to SAY flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

Explore a world of travel with Expedia

*Available to One Key members.