Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London to Siena from £56

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BLQ
31 Mar — 7 Apr1
1 adult

Cheapflights Tip: The best prices from London to Siena are usually found in January or November, booked 72 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from London to Siena

Keep the following information in mind while searching for London to Siena flight deals. Data was last updated 26 March 2025.

Round-trip from

£92

One-way from

£56

Popular in

May

Cheapest in

January

Average price

£170
Vueling
  • Vueling
  • 17/5-20/5
  • 1 total stop
  • 7h 20m total
  • London to Siena
Search Deals
Vueling
  • Vueling
  • 23/4
  • Nonstop
  • 2h 25m total
  • London to Siena
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£19 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from London to Siena

Cheapest flights from London to Siena
Explore the most affordable flight options available from London to Siena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 March 2025.

Sat 17/519:50LGW - FLR
Nonstop2h 15mVueling
Tue 20/518:45FLR - LGW
1 stop5h 05mVueling
Deal found 25/3£92
Tue 29/420:55LGW - FLR
1 stop20h 20mMultiple Airlines
Thu 1/517:50FLR - LGW
Nonstop2h 25mMultiple Airlines
Deal found 25/3£107
Tue 13/522:05STN - FLR
1 stop22h 20mMultiple Airlines
Wed 21/509:10FLR - STN
1 stop13h 35mMultiple Airlines
Deal found 25/3£114
Wed 14/518:25LTN - FLR
1 stop26h 00mMultiple Airlines
Thu 22/522:00FLR - LTN
1 stop23h 55mMultiple Airlines
Deal found 25/3£124
Fri 12/912:05LGW - FLR
1 stop5h 10mITA Airways
Tue 16/906:25FLR - LGW
1 stop5h 50mITA Airways
Deal found 25/3£137
Fri 25/419:00LHR - FLR
Nonstop2h 20mBritish Airways
Tue 29/407:05FLR - LHR
Nonstop2h 25mBritish Airways
Deal found 25/3£141
Thu 24/406:00LHR - FLR
1 stop10h 45mMultiple Airlines
Thu 1/517:25FLR - LHR
1 stop6h 15mMultiple Airlines
Deal found 25/3£142
Tue 22/407:25LHR - FLR
1 stop11h 50mLufthansa
Tue 29/413:35FLR - LHR
1 stop4h 30mLufthansa
Deal found 25/3£146
Wed 19/1116:45LCY - FLR
1 stop4h 50mITA Airways
Sun 23/1119:10FLR - LCY
1 stop15h 55mITA Airways
Deal found 25/3£148
Fri 9/517:10LHR - FLR
1 stop4h 25mSWISS
Fri 16/506:05FLR - LHR
1 stop26h 50mSWISS
Deal found 25/3£158
Thu 24/418:40LGW - FLR
1 stop14h 05mSWISS
Mon 28/406:05FLR - LGW
1 stop12h 45mSWISS
Deal found 26/3£163
Tue 22/417:50LCY - FLR
1 stop3h 45mSWISS
Tue 29/414:55FLR - LCY
1 stop4h 50mSWISS
Deal found 25/3£170

Cheapflights Fare Finder

Customise your flight search to find flights from London to Siena that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 26 March 2025.
Use the filters below to find and compare flights from London to Siena that are best for you.

Fly from

London

Fly to

Siena

Route

Depart

Return

Price

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Sat 17/5

19:50-23:05

Nonstop2h 15m

Florence Peretola

Tue 20/5

18:45-22:50

1 stop5h 05m

£92

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Tue 29/4

20:55-18:15

1 stop20h 20m

Florence Peretola

Thu 1/5

17:50-19:15

Nonstop2h 25m

£107

LondonFlorence

STN - FLR

STNFLR

London Stansted

Tue 13/5

22:05-21:25

1 stop22h 20m

Florence Peretola

Wed 21/5

09:10-21:45

1 stop13h 35m

£114

LondonFlorence

LTN - FLR

LTNFLR

London Luton

Wed 14/5

18:25-21:25

1 stop26h 00m

Florence Peretola

Thu 22/5

22:00-20:55

1 stop23h 55m

£124

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Fri 12/9

12:05-18:15

1 stop5h 10m

Florence Peretola

Tue 16/9

06:25-11:15

1 stop5h 50m

£137

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Fri 25/4

19:00-22:20

Nonstop2h 20m

Florence Peretola

Tue 29/4

07:05-08:30

Nonstop2h 25m

£141

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Thu 24/4

06:00-17:45

1 stop10h 45m

Florence Peretola

Thu 1/5

17:25-22:40

1 stop6h 15m

£142

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Tue 22/4

07:25-20:15

1 stop11h 50m

Florence Peretola

Tue 29/4

13:35-17:05

1 stop4h 30m

£146

LondonFlorence

LCY - FLR

LCYFLR

London City

Fri 12/9

08:30-18:15

1 stop8h 45m

Florence Peretola

Mon 15/9

19:00-10:05

1 stop16h 05m

£152

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Fri 9/5

17:10-22:35

1 stop4h 25m

Florence Peretola

Fri 16/5

06:05-07:55

1 stop26h 50m

£158

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 48 results
1
2
3
...
5

Best time to book a flight from London to Siena

Have a flexible travel schedule? Discover the best time to fly to Siena from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Siena

How far ahead should I book a flight from London to Siena?

Use this chart to determine the optimal time to book a return flight from London to Siena. Price data was last updated on 21 March 2025.

To ensure you get the cheapest price possible for a flight from London to Siena, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from London to Siena?

Currently, January is the cheapest month in which you can book a flight from London to Siena (average of £118). Flying from London to Siena in May is currently the most expensive (average of £226). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 26 March 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Siena as you normally would.

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 16 December 2024.

Travellers seeking maximum savings on their London to Siena flight should consider departing on Wednesday at midday when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Siena by month

Plan your trip to Siena by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Siena ranges from 30.0 - 100.0 inches per month. October is typically the wettest month, when rainfall can reach 100.0 mm. July is typically the driest time to visit Siena when rainfall is around 30.0 mm.

Temperature in Siena by month

Plan your trip to Siena by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Siena, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 24.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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 26 March 2025.
Peruse reviews from past customers who have flown with KLM, Austrian Airlines and SWISS from London to Siena to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,319 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,319 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Austrian Airlines
7.5
Good
769 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
SWISS
7.5
Good
1,569 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air France
7.4
Good
1,423 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Scandinavian Airlines
7.3
Good
1,325 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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 cheapest airlines to fly from London to Siena one-way?

    The cheapet airlines for a one-way flight from London to Siena are Vueling (£56), ITA Airways (£80), and SWISS (£91).

  • 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 City - Florence Peretola or London Gatwick - Florence Peretola.

  • What are the most reliable airlines from London to Siena?

    Consider Japan Airlines (86%), Qatar Airways (83%) or American Airlines (83%) 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 £203, our data shows the cheapest flight currently is £68. When looking at the most popular route, (London Heathrow - Florence Peretola), you can expect to pay £124 for that flight.

  • Can I find deals for flights from London to Siena that include hotel bookings?

    Yes. In addition to deals on London to Siena flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Siena?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Siena.

  • 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.

  • What is the cheapest month to book a flight from London to Siena?

    Currently, January is the cheapest month in which you can book a flight from London to Siena (average of £118). Flying from London to Siena in May is currently the most expensive (average of £226). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Siena

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Leonardo da Vinci/Fiumicino flights
London City to Leonardo da Vinci/Fiumicino flights
Gatwick to Leonardo da Vinci/Fiumicino flights
Stansted to Ciampino flights
Stansted to Leonardo da Vinci/Fiumicino flights
Heathrow to Florence flights
Luton to Leonardo da Vinci/Fiumicino flights
London City to Florence flights
Gatwick to Florence flights
Heathrow to Pisa flights
Gatwick to Pisa flights
Manchester to Leonardo da Vinci/Fiumicino flights
Stansted to Pisa flights
Luton to Ciampino flights
Luton to Pisa flights
Manchester to Ciampino flights
London City to Pisa flights
Heathrow to Ciampino flights
Manchester to Pisa flights
Bristol to Leonardo da Vinci/Fiumicino flights
Luton to Florence flights
Birmingham to Leonardo da Vinci/Fiumicino flights
Edinburgh to Leonardo da Vinci/Fiumicino flights
Stansted to Florence flights
Edinburgh to Ciampino flights
Manchester to Florence flights
Gatwick to Ciampino flights
Southend to Pisa flights
Edinburgh to Florence flights
Liverpool to Leonardo da Vinci/Fiumicino flights
Leeds to Leonardo da Vinci/Fiumicino flights
Edinburgh to Pisa flights
Birmingham to Ciampino flights
Birmingham to Florence flights
Bristol to Pisa flights
Birmingham to Pisa flights
Newcastle upon Tyne to Leonardo da Vinci/Fiumicino flights
Bristol to Ciampino flights
East Midlands to Leonardo da Vinci/Fiumicino flights
Liverpool to Ciampino flights
Southampton to Leonardo da Vinci/Fiumicino flights
Southend to Leonardo da Vinci/Fiumicino flights
East Midlands to Ciampino flights
Leeds to Ciampino flights
Southampton to Florence flights
Leeds to Pisa flights
Bristol to Florence flights
Newcastle upon Tyne to Ciampino flights
Leeds to Florence flights
Newcastle upon Tyne to Florence flights

Top 9 airlines flying from London to Siena

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 858,174 searches. Data last updated 26 March 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£34Average£121FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
easyJetCheapest£52Average£149FlexibilityNo cancel feeOn-time86%
Search easyJet flights
VuelingCheapest£65Average£170FlexibilityNo cancel feeOn-time88%
Search Vueling flights
British AirwaysCheapest£94Average£262FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Brussels AirlinesCheapest£121Average£169FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
SWISSCheapest£124Average£189FlexibilityNo cancel feeOn-time79%
Search SWISS flights
LufthansaCheapest£128Average£182FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£137Average£213FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£151Average£229FlexibilityNo cancel feeOn-time77%
Search Air France flights

Fly with Cheapflights

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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.