Cheap Flights from San Diego (SAN) to Siena (SAY)

Popular airlines from San Diego Intl. Airport (SAN) to Ampugnano Airport (SAY)

Frequently asked questions

How much does a flight from San Diego Intl. Airport (SAN) to Siena (SAY-Ampugnano) cost?
Get a cheap one-way flight or cheap return flight from San Diego Intl. Airport (SAN) 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 San Diego Intl. Airport (SAN) to Siena (SAY-Ampugnano)?
is the most affordable month to fly from SAN to SAY. Traveling during quieter months is often the key to finding a great deal.
What is the cheapest airline that flies from San Diego Intl. Airport (SAN) to Siena (SAY-Ampugnano)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SAN to SAY flight.
How many flights per day from San Diego Intl. Airport (SAN) to Siena (SAY-Ampugnano)?
There are no daily nonstop flights available from San Diego Intl. Airport (SAN) to Siena (SAY-Ampugnano). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from SAN to SAY?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Diego Intl. Airport (SAN) to Siena (SAY-Ampugnano)?
Choose a flight from San Diego Intl. Airport (SAN) to Siena (SAY-Ampugnano) that takes off before 3 PM to reduce the likelihood of delays. Departures after this hour have a 22% higher chance of being canceled, on average.**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 San Diego Intl. Airport (SAN) to Siena (SAY-Ampugnano) last-minute?
Waiting until just before your departure to book a flight from SAN to SAY often results in higher prices. While you might find some last-minute offers, they're not always guaranteed. Keep your travel plans flexible to maximize your chances of getting a bargain.
Can I cancel or change the date of my flight from San Diego Intl. Airport (SAN) to Siena (SAY-Ampugnano)?
It's usually possible to reschedule or cancel your SAN to SAY flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
San Diego Intl.
Destination airport
Ampugnano
Distance
6259 mi

Book with confidence

San Diego to Siena Flights

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

 

The best time to book a flight from San Diego to Siena

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

 

San Diego to Siena Flights

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*Available to One Key members.