฿11,639+ Cheap flights to Siena

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 17/1. Fares are subject to change and may not be available on all flights or dates of travel.
— BLQ
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags

Flights to Siena in 2026

Find the latest flights to Siena in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 9 January 2026.

Return from

฿23,781

One-way from

฿11,639
27/1-30/1
  • 27/1-30/1
  • 5 total stops
  • 58h 25m total
  • Bangkok to Florence
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17/1
  • 17/1
  • 2 total stops
  • 45h 40m total
  • Bangkok to Siena
Search Deals

Find flight deals to Siena

Enter your travel dates to find the best prices.

Cheapest flights to Siena
Explore the most affordable flight options available to Siena. Find the lowest fares based on data from user searches, with prices last updated on 9 January 2026.

Wed 4/205:05BKK - FLR
2 stops23h 35mMultiple Airlines
Wed 11/215:00FLR - BKK
2 stops26h 55mMultiple Airlines
Deal found 6/1฿23,876
Thu 22/112:15BKK - FLR
1 stop16h 25mITA Airways
Mon 26/115:00FLR - BKK
1 stop35h 10mITA Airways
Deal found 7/1฿24,410
Thu 22/114:40BKK - FLR
2 stops26h 15mเอทิฮัดแอร์เวย์
Mon 26/115:00FLR - BKK
2 stops26h 25mเอทิฮัดแอร์เวย์
Deal found 7/1฿24,756
Sun 22/220:15BKK - FLR
3 stops29h 30mMultiple Airlines
Sun 1/306:30FLR - BKK
3 stops21h 20mMultiple Airlines
Deal found 8/1฿25,574
Thu 22/105:05BKK - FLR
2 stops23h 35mMultiple Airlines
Mon 26/115:00FLR - BKK
3 stops29h 05mMultiple Airlines
Deal found 7/1฿25,669
Sat 21/217:55BKK - FLR
3 stops34h 45mMultiple Airlines
Sat 28/206:35FLR - BKK
3 stops31h 15mMultiple Airlines
Deal found 7/1฿26,235
Wed 21/112:15BKK - FLR
1 stop16h 25mITA Airways
Sun 25/106:35FLR - BKK
1 stop19h 35mITA Airways
Deal found 8/1฿26,738
Wed 4/209:30BKK - FLR
1 stop19h 25mแอร์ฟร้านซ์
Wed 11/206:50FLR - BKK
1 stop18h 40mแอร์ฟร้านซ์
Deal found 6/1฿27,713

Cheapflights Fare Finder

 
Locate flights to Siena that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 9 January 2026.
Use the filters below to find and compare flights to Siena that are best for you.

Fly from

Bangkok

Route

Depart

Return

Price

BangkokFlorence

BKK - FLR

BKKFLR

Bangkok Suvarnabhumi

Wed 4/2

05:05-22:40

2 stops23h 35m

Florence Peretola

Wed 11/2

15:00-23:55

2 stops26h 55m

฿23,876

BangkokFlorence

BKK - FLR

BKKFLR

Bangkok Suvarnabhumi

Sun 22/2

20:15-19:45

3 stops29h 30m

Florence Peretola

Sun 1/3

06:30-09:50

3 stops21h 20m

฿25,574

BangkokFlorence

BKK - FLR

BKKFLR

Bangkok Suvarnabhumi

Thu 22/1

05:05-22:40

2 stops23h 35m

Florence Peretola

Mon 26/1

15:00-02:05

3 stops29h 05m

฿25,669

BangkokFlorence

BKK - FLR

BKKFLR

Bangkok Suvarnabhumi

Sat 21/2

17:55-22:40

3 stops34h 45m

Florence Peretola

Sat 28/2

06:35-19:50

3 stops31h 15m

฿26,235

BangkokFlorence

BKK - FLR

BKKFLR

Bangkok Suvarnabhumi

Wed 21/1

12:15-22:40

1 stop16h 25m

Florence Peretola

Sun 25/1

06:35-08:10

1 stop19h 35m

฿26,738

BangkokFlorence

BKK - FLR

BKKFLR

Bangkok Suvarnabhumi

Wed 4/2

09:30-22:55

1 stop19h 25m

Florence Peretola

Wed 11/2

06:50-07:30

1 stop18h 40m

฿27,713

BangkokFlorence

BKK - FLR

BKKFLR

Bangkok Suvarnabhumi

Thu 22/1

14:00-16:30

2 stops32h 30m

Florence Peretola

Mon 26/1

13:15-14:50

1 stop19h 35m

฿29,412

BangkokFlorence

BKK - FLR

BKKFLR

Bangkok Suvarnabhumi

Tue 27/1

18:40-11:20

2 stops22h 40m

Florence Peretola

Fri 30/1

15:20-16:05

1 stop18h 45m

฿29,569

BangkokFlorence

BKK - FLR

BKKFLR

Bangkok Suvarnabhumi

Wed 4/2

12:15-22:40

1 stop16h 25m

Florence Peretola

Wed 11/2

11:40-08:10

1 stop14h 30m

฿29,601

BangkokFlorence

BKK - FLR

BKKFLR

Bangkok Suvarnabhumi

Sat 17/1

01:10-16:50

2 stops45h 40m

฿11,639

Flights are sorted by cheapest return flights first.

Deals found on 7/1

Showing 1-10 of 25 results
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Best time to book a flight to Siena

Have a flexible travel schedule? Discover the best time to fly to Siena 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 to Siena

How long is the flight to Siena?

On average, a flight from Bangkok to Siena takes 35 hours 5 minutes. Flights to Siena from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.

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 mm 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).

FAQs about flying to Siena

  • Can I find cheaper flights to Siena if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Siena on Cheapflights that require 1 or 2 stops for potential cost savings.

  • Where does the fastest flight to Siena depart from?

    For those looking to save time traveling to Siena, Bangkok offers the quickest one-way flight (18 hours 25 minutes).

  • Does Bologna Guglielmo Marconi have rental cars?

    Yes. Those touching down at Bologna Guglielmo Marconi can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Bologna Guglielmo Marconi?

    Yes. Bologna Guglielmo Marconi has hotels nearby for those requiring accommodations. Flyon Hotel & Conference Center is the closest property to Bologna Guglielmo Marconi (0.0 km away from Bologna Guglielmo Marconi).

See more FAQs

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Yes, we can. To see specific flights to Siena with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights to Siena become cheaper?

Yes, Cheapflights has a feature called Price Alerts, which notifies users when flight prices change. Track prices for your flight to Siena today and book when you’re ready!

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