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Cheap flights from London to Siena from £37

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BLQ
26 Jan — 2 Feb1
1 adult

The best prices from London to Siena are usually found in January or November, booked 88 days in advance, depart on a Monday or Wednesday and return on a Saturday

Cheap flight deals from London to Siena

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Siena (S1N). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 January 2025.

Round-trip from

£72

One-way from

£37

Popular in

May

Cheapest in

January

Average price

£101
Vueling
  • Vueling
  • 22/3-27/3
  • Nonstop
  • 4h 25m total
  • London to Siena
Search Deals
Vueling
  • Vueling
  • 18/3
  • Nonstop
  • 2h 15m total
  • London to Siena
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£25 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2025
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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 21 January 2025.

Sat 22/319:55LGW - FLR
Nonstop2h 05mVueling
Thu 27/313:20FLR - LGW
Nonstop2h 20mVueling
Deal found 20/1£72
Tue 4/308:50LCY - FLR
Nonstop2h 05mBritish Airways
Tue 11/315:10FLR - LCY
Nonstop2h 10mBritish Airways
Deal found 20/1£83
Thu 27/308:35LGW - FLR
2 stops13h 40mMultiple Airlines
Sun 30/306:25FLR - LGW
Nonstop2h 25mMultiple Airlines
Deal found 20/1£91
Sat 1/306:10LTN - FLR
2 stops16h 10mMultiple Airlines
Mon 3/306:30FLR - LTN
2 stops17h 20mMultiple Airlines
Deal found 20/1£116
Tue 4/309:55LHR - FLR
1 stop12h 20mVueling
Tue 11/319:05FLR - LHR
1 stop15h 05mVueling
Deal found 20/1£117
Sat 1/212:55STN - FLR
1 stop7h 30mMultiple Airlines
Sat 8/215:15FLR - STN
Nonstop2h 15mMultiple Airlines
Deal found 21/1£120
Sat 1/319:35LHR - FLR
1 stop12h 30mAir France
Mon 3/315:30FLR - LHR
1 stop6h 55mAir France
Deal found 21/1£127
Sun 26/108:30STN - FLR
Nonstop2h 15mBritish Airways
Sat 1/215:15FLR - STN
Nonstop2h 15mBritish Airways
Deal found 21/1£132
Wed 19/213:50LHR - FLR
1 stop5h 25mLufthansa
Wed 26/206:40FLR - LHR
1 stop10h 05mLufthansa
Deal found 20/1£133
Tue 5/819:00LHR - FLR
Nonstop2h 20mBritish Airways
Thu 21/807:05FLR - LHR
Nonstop2h 25mBritish Airways
Deal found 20/1£134
Thu 6/320:05LHR - FLR
1 stop11h 45mMultiple Airlines
Thu 13/306:40FLR - LHR
1 stop10h 10mMultiple Airlines
Deal found 20/1£137
Fri 3/1016:50LCY - FLR
1 stop17h 00mITA Airways
Wed 8/1006:35FLR - LCY
1 stop10h 40mITA Airways
Deal found 20/1£139

Find flights from London to Siena within your budget

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 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Sat 22/3

19:55-23:00

Nonstop2h 05m

Florence Peretola

Thu 27/3

13:20-14:40

Nonstop2h 20m

£72

LondonFlorence

LCY - FLR

LCYFLR

London City

Tue 4/3

08:50-11:55

Nonstop2h 05m

Florence Peretola

Tue 11/3

15:10-16:20

Nonstop2h 10m

£83

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Tue 4/3

06:05-23:15

2 stops16h 10m

Florence Peretola

Tue 11/3

06:50-08:15

Nonstop2h 25m

£87

LondonFlorence

LTN - FLR

LTNFLR

London Luton

Sat 1/3

06:10-23:20

2 stops16h 10m

Florence Peretola

Mon 3/3

06:30-22:50

2 stops17h 20m

£116

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Tue 4/3

09:55-23:15

1 stop12h 20m

Florence Peretola

Tue 11/3

19:05-09:10

1 stop15h 05m

£117

LondonFlorence

STN - FLR

STNFLR

London Stansted

Sat 1/2

12:55-21:25

1 stop7h 30m

Florence Peretola

Sat 8/2

15:15-16:30

Nonstop2h 15m

£120

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Sat 1/3

19:35-09:05

1 stop12h 30m

Florence Peretola

Mon 3/3

15:30-21:25

1 stop6h 55m

£127

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Wed 19/2

13:50-20:15

1 stop5h 25m

Florence Peretola

Wed 26/2

06:40-15:45

1 stop10h 05m

£133

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Thu 6/3

20:05-08:50

1 stop11h 45m

Florence Peretola

Thu 13/3

06:40-15:50

1 stop10h 10m

£137

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Mon 31/3

19:00-22:20

Nonstop2h 20m

Florence Peretola

Tue 8/4

07:05-08:30

Nonstop2h 25m

£139

Flights are sorted by cheapest return flights first.

Deals found on 20/1

Showing 1-10 of 48 results
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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.

Travel insights for flights from London to Siena

Get recent, data-driven insights about flights from London to Siena including ideal travel times, pricing trends, and more.

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 17 January 2025.

To ensure you get the cheapest price possible for a flight from London to Siena, you should look to book at least 88 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 21 January 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 Saturday 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 21 January 2025.
Peruse reviews from past customers who have flown with Lufthansa, Vueling and British Airways 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
1,341 reviews
Check prices

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,341 reviews
KLM
7.8
Good
1,341 reviews
Check prices

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Austrian Airlines
7.6
Good
786 reviews
KLM
7.8
Good
1,341 reviews
Check prices

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

SWISS
7.5
Good
1,600 reviews
KLM
7.8
Good
1,341 reviews
Check prices

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Air France
7.4
Good
1,490 reviews
KLM
7.8
Good
1,341 reviews
Check prices

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Scandinavian Airlines
7.3
Good
1,320 reviews
KLM
7.8
Good
1,341 reviews
Check prices

Entertainment

7.2

Food

7.3

Comfort

7.7

Crew

8.4

Boarding

7.8

Overall

7.8

Reviews

1 / 10

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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 (£37), British Airways (£46), and KLM (£88).

  • 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 Japan Airlines (63%), American Airlines (62%) or Qatar Airways (61%) 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 £211, our data shows the cheapest flight currently is £67. When looking at the most popular route, (London Heathrow - Florence Peretola), you can expect to pay £121 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

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Alternative routes for London to Siena

See prices for flight routes from nearby airports that may be better suited for you.
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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 21 January 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£41Average£123FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£52Average£287FlexibilityNo cancel feeOn-time70%
Search British Airways flights
easyJetCheapest£55Average£154FlexibilityNo cancel feeOn-time86%
Search easyJet flights
VuelingCheapest£78Average£192FlexibilityNo cancel feeOn-time88%
Search Vueling flights
SWISSCheapest£130Average£188FlexibilityNo cancel feeOn-time79%
Search SWISS flights
LufthansaCheapest£135Average£191FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Brussels AirlinesCheapest£136Average£189FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
KLMCheapest£144Average£229FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£158Average£265FlexibilityNo 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.

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