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Cheap flights from London to Siena from £43

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 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BLQ
27 Feb — 6 Mar1
1 adult

The best prices from London to Siena are usually found in January or November, booked 88 days in advance, depart on a Tuesday or Monday 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 22 February 2025.

Round-trip from

£78

One-way from

£43

Popular in

May

Cheapest in

January

Average price

£147
Vueling
  • Vueling
  • 19/4-30/4
  • Nonstop
  • 4h 40m total
  • London to Siena
Search Deals
Vueling
  • Vueling
  • 17/5
  • Nonstop
  • 2h 15m total
  • London to Siena
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£21 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 22 February 2025.

Sat 19/419:50LGW - FLR
Nonstop2h 15mVueling
Wed 30/406:25FLR - LGW
Nonstop2h 25mVueling
Deal found 21/2£78
Tue 1/420:20LGW - FLR
2 stops25h 10mMultiple Airlines
Thu 3/407:35FLR - LGW
Nonstop2h 25mMultiple Airlines
Deal found 21/2£86
Sun 27/407:50STN - FLR
Nonstop2h 15mBritish Airways
Sat 3/516:15FLR - STN
Nonstop2h 15mBritish Airways
Deal found 22/2£114
Tue 29/414:50STN - FLR
1 stop7h 05mMultiple Airlines
Sat 3/516:15FLR - STN
Nonstop2h 15mMultiple Airlines
Deal found 21/2£115
Tue 1/420:50LHR - FLR
1 stop10h 45mVueling
Tue 8/418:45FLR - LHR
1 stop15h 25mVueling
Deal found 22/2£115
Tue 13/506:00LTN - FLR
1 stop27h 00mMultiple Airlines
Tue 20/521:55FLR - LTN
1 stop15h 25mMultiple Airlines
Deal found 21/2£122
Tue 1/419:00LHR - FLR
Nonstop2h 20mBritish Airways
Tue 8/407:05FLR - LHR
Nonstop2h 25mBritish Airways
Deal found 22/2£138
Wed 4/609:00LHR - FLR
1 stop4h 55mLufthansa
Wed 11/615:40FLR - LHR
1 stop5h 00mLufthansa
Deal found 21/2£140
Sat 19/407:25LHR - FLR
1 stop11h 50mMultiple Airlines
Wed 30/411:30FLR - LHR
1 stop11h 05mMultiple Airlines
Deal found 21/2£143
Mon 6/1010:20LHR - FLR
1 stop7h 30mScandinavian Airlines
Fri 10/1011:50FLR - LHR
1 stop10h 30mScandinavian Airlines
Deal found 21/2£150
Fri 26/916:50LCY - FLR
1 stop4h 45mITA Airways
Sun 28/911:35FLR - LCY
1 stop23h 30mITA Airways
Deal found 22/2£152
Mon 9/612:05LGW - FLR
1 stop5h 25mITA Airways
Wed 11/606:35FLR - LGW
1 stop5h 40mITA Airways
Deal found 22/2£153

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 22 February 2025.

Fly from

London

Fly to

Siena

Route

Depart

Return

Price

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Sat 19/4

19:50-23:05

Nonstop2h 15m

Florence Peretola

Wed 30/4

06:25-07:50

Nonstop2h 25m

£78

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Tue 1/4

20:20-22:30

2 stops25h 10m

Florence Peretola

Thu 3/4

07:35-09:00

Nonstop2h 25m

£86

LondonFlorence

STN - FLR

STNFLR

London Stansted

Sun 27/4

07:50-11:05

Nonstop2h 15m

Florence Peretola

Sat 3/5

16:15-17:30

Nonstop2h 15m

£114

LondonFlorence

STN - FLR

STNFLR

London Stansted

Tue 29/4

14:50-22:55

1 stop7h 05m

Florence Peretola

Sat 3/5

16:15-17:30

Nonstop2h 15m

£115

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Tue 1/4

20:50-08:35

1 stop10h 45m

Florence Peretola

Tue 8/4

18:45-09:10

1 stop15h 25m

£115

LondonFlorence

LTN - FLR

LTNFLR

London Luton

Tue 13/5

06:00-10:00

1 stop27h 00m

Florence Peretola

Tue 20/5

21:55-12:20

1 stop15h 25m

£122

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Tue 1/4

19:00-22:20

Nonstop2h 20m

Florence Peretola

Tue 8/4

07:05-08:30

Nonstop2h 25m

£138

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Wed 4/6

09:00-14:55

1 stop4h 55m

Florence Peretola

Wed 11/6

15:40-19:40

1 stop5h 00m

£140

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Sat 19/4

07:25-20:15

1 stop11h 50m

Florence Peretola

Wed 30/4

11:30-21:35

1 stop11h 05m

£143

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Mon 9/6

12:05-18:30

1 stop5h 25m

Florence Peretola

Wed 11/6

06:35-11:15

1 stop5h 40m

£153

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 50 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 14 February 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 22 February 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. Monday afternoons 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 22 February 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
1,332 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

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
1,332 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

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
7.5
Good
771 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

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
1,566 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

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
1,448 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

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
1,332 reviews
Check prices

Overall

7.8

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

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 (£43), British Airways (£59), and KLM (£88).

  • What are the most popular routes from London to Siena?

    The most popular route from London to Siena is London City - Florence Peretola. You may also consider London Heathrow - Florence Peretola or London Gatwick - Florence Peretola.

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

    Consider Japan Airlines (78%), Qatar Airways (74%) or British Airways (74%) 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 £205, our data shows the cheapest flight currently is £74. When looking at the most popular route, (London City - Florence Peretola), you can expect to pay £169 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 22 February 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£40Average£121FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
easyJetCheapest£54Average£154FlexibilityNo cancel feeOn-time86%
Search easyJet flights
VuelingCheapest£76Average£193FlexibilityNo cancel feeOn-time88%
Search Vueling flights
British AirwaysCheapest£96Average£263FlexibilityNo cancel feeOn-time70%
Search British Airways flights
SWISSCheapest£127Average£194FlexibilityNo cancel feeOn-time79%
Search SWISS flights
LufthansaCheapest£131Average£185FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Brussels AirlinesCheapest£132Average£184FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
KLMCheapest£140Average£227FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£154Average£234FlexibilityNo 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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