Cheap Flights from Brussels (BRU) to Siena (SAY)

Popular airlines from Brussels Airport (BRU) to Ampugnano Airport (SAY)

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Frequently asked questions

How much does a flight from Brussels - National Airport (BRU) to Siena (SAY-Ampugnano) cost?
Secure a cheap one-way flight or cheap return flight from Brussels - National Airport (BRU) to Siena (SAY-Ampugnano) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Brussels - National Airport (BRU) to Siena (SAY-Ampugnano)?
The cheapest month to fly from BRU to SAY is , when demand is low. Off-peak months are often when airlines offer better prices between these airports.
What is the cheapest airline that flies from Brussels - National Airport (BRU) to Siena (SAY-Ampugnano)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest BRU to SAY flight.
How many flights per day from Brussels - National Airport (BRU) to Siena (SAY-Ampugnano)?
Direct flights from Brussels - National Airport (BRU) to Siena (SAY-Ampugnano) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BRU to SAY?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Brussels - National Airport (BRU) to Siena (SAY-Ampugnano)?
To reach Siena (SAY-Ampugnano) on schedule, choose a flight that takes off from Brussels - National Airport (BRU) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Brussels - National Airport (BRU) to Siena (SAY-Ampugnano) last-minute?
Booking your flight from BRU to SAY just before your getaway is generally more expensive. But if you're flexible with your travel dates and times, you could snag a cheap last-minute fare.
Can I cancel or change the date of my flight from Brussels - National Airport (BRU) to Siena (SAY-Ampugnano)?
If you reserved your BRU to SAY flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you have, 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.

Travel information

Origin airport
Brussels - National
Destination airport
Ampugnano
Distance
615 mi

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Brussels to Siena Flights

The cheapest times to fly from Brussels 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 Brussels to Siena are during the month of . You can find some of the cheapest flights from Brussels to Siena with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Brussels to Siena

Sunday is one of the best days to book for cheap flights from Brussels 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 Brussels 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 Brussels 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 Brussels 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 Brussels 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.

 

Brussels to Siena Flights

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*Available to One Key members.