Cheapflights Tip: The best prices from London to Siena are usually found in January or November, booked 57 days in advance, depart on a Tuesday or Monday and return on a Thursday
Find flight deals from London to Siena
Keep the following information in mind while searching for London to Siena flight deals. Data was last updated 29 September 2026.
Popular in
September
Cheapest in
January
Average price
£254
Highest demand for flights based on searches. 9% potential increase in price (£15 potential increase over avg. return price).
Everything you need to know about your flight from London to Siena
What is the cheapest time of day to fly from LON to S1N?
Find hourly flight availability from London to Siena. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 September 2026.
It’s optimal to fly from London to Siena at midday. By choosing this option you can save up to 12% on the cost of your flight, compared to a flight in the afternoon.
What is the cheapest day to fly from London to Siena?
Use this chart to determine the cheapest time to fly return from London to Siena. Price data was last updated on 26 September 2026.
Travellers seeking maximum savings on their London to Siena flight should consider departing on Saturday at midday when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Siena
Get insights into the airlines that provide service to Siena. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Siena. Reviews last updated 29 September 2026.
Check out reviews from past customers who have flown with Vueling,Iberia, andRyanair from London to Siena to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Rude Air hostess, looks tired...no smile, no food, not even water although i understnad its 2 hours flight. No hand luggage included in price. Worst airline ever...so tight sitting arrangement
Rude Air hostess, looks tired...no smile, no food, not even water although i understnad its 2 hours flight. No hand luggage included in price. Worst airline ever...so tight sitting arrangement
Rude Air hostess, looks tired...no smile, no food, not even water although i understnad its 2 hours flight. No hand luggage included in price. Worst airline ever...so tight sitting arrangement
Rude Air hostess, looks tired...no smile, no food, not even water although i understnad its 2 hours flight. No hand luggage included in price. Worst airline ever...so tight sitting arrangement
Rude Air hostess, looks tired...no smile, no food, not even water although i understnad its 2 hours flight. No hand luggage included in price. Worst airline ever...so tight sitting arrangement
Rude Air hostess, looks tired...no smile, no food, not even water although i understnad its 2 hours flight. No hand luggage included in price. Worst airline ever...so tight sitting arrangement
Related info for your journey
Find useful and relevant information for your journey from London to Siena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What are the most popular routes from London to Siena?
The most popular route from London to Siena is London Heathrow - Florence Peretola. You may also consider London Gatwick - Florence Peretola or London City - Florence Peretola.
What are the most reliable airlines from London to Siena?
Consider American Airlines (69%), Qatar Airways (68%) or British Airways (68%) when booking your flight. These represent the most reliable airlines when flying from London to Siena.
What are the cheapest flights from London to Siena?
While on average a flight from London to Siena is generally £161, our data shows the cheapest flight currently is £82. When looking at the most popular route, (London Heathrow - Florence Peretola), you can expect to pay £97 for that flight.
Can I find deals for business class flights from London to Siena?
Yes. Cheapflights offers flight deals from London to Siena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
Browse through other flights departing from London. Flights are based on user searches made on Cheapflights and were last updated on 29 September 2026.
Discover the top 9 airlines that operate flights from London to Siena. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 29 September 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from London to Siena?
When you search for this flight from London to Siena, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from London to Siena?
Cheapflights simply makes it quick and affordable to book flights from London to Siena by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from London to Siena with no change fees?
Certainly. Search results for flights to Siena from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from London to Siena become cheaper?
Yes, Cheapflights offers price alerts on London to Siena flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
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