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Cheap flights from Southampton to Castletown from £264

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — IOM
23 Jul — 30 Jul1
1 adult

Cheap flight deals from Southampton to Castletown

Discover tips and strategies to find the most affordable flight options for your journey from Southampton (SOU) to Castletown (IOM). 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 18 July 2025.

Round-trip from

£264

Popular in

June

Cheapest in

January

Average price

£146
Aer Lingus
  • Aer Lingus
  • 12/8-14/8
  • 2 total stops
  • 14h 00m total
  • Southampton to Castletown
Search Deals
Highest demand for flights based on searches. 33% potential increase in price (£38 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Southampton to Castletown

Cheapest flights from Southampton to Castletown
Explore the most affordable flight options available from Southampton to Castletown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2025.

Tue 12/809:10SOU - IOM
1 stop7h 40mAer Lingus
Thu 14/813:10IOM - SOU
1 stop6h 20mAer Lingus
Deal found 18/7£264
Fri 28/1111:40SOU - IOM
1 stop21h 35mLoganair
Sun 30/1115:20IOM - SOU
1 stop5h 35mLoganair
Deal found 17/7£280
Tue 12/809:10SOU - IOM
1 stop7h 40mMultiple Airlines
Thu 14/815:15IOM - SOU
2 stops4h 45mMultiple Airlines
Deal found 18/7£323
Tue 7/1019:55SOU - IOM
1 stop23h 30mBritish Airways
Sun 12/1019:55IOM - SOU
1 stop12h 15mBritish Airways
Deal found 16/7£504

Cheapflights Fare Finder

Customise your flight search to find flights from Southampton to Castletown 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 18 July 2025.
Use the filters below to find and compare flights from Southampton to Castletown that are best for you.

Fly from

Southampton

Fly to

Castletown

Route

Depart

Return

Price

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Tue 12/8

09:10-16:50

1 stop7h 40m

Castletown Ronaldsway

Thu 14/8

13:10-19:30

1 stop6h 20m

£264

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Fri 28/11

11:40-09:15

1 stop21h 35m

Castletown Ronaldsway

Sun 30/11

15:20-20:55

1 stop5h 35m

£280

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Tue 12/8

09:10-16:50

1 stop7h 40m

Castletown Ronaldsway

Thu 14/8

15:15-20:00

2 stops4h 45m

£323

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Tue 7/10

19:55-19:25

1 stop23h 30m

Castletown Ronaldsway

Sun 12/10

19:55-08:10

1 stop12h 15m

£504

Flights are sorted by cheapest return flights first.

Deals found on 18/7

Best time to book a flight from Southampton to Castletown

Have a flexible travel schedule? Discover the best time to fly to Castletown from Southampton 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 Southampton to Castletown

What is the cheapest month to book a flight from Southampton to Castletown?

Currently, March is the cheapest month in which you can book a flight from Southampton to Castletown (average of £86). Flying from Southampton to Castletown in July is currently the most expensive (average of £119). 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.

Reviews of airlines servicing Castletown

Get insights into the airlines that provide service to Castletown. 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 Castletown. Reviews last updated 18 July 2025.
Read through reviews of airlines operating flights from Southampton to Castletown, such as Aer Lingus and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.1
Good
1,170 reviews
Check prices

Food

6.4

Crew

8.0

Comfort

7.0

Entertainment

6.8

Boarding

7.3

Overall

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.
Aer Lingus
7.1
Good
1,170 reviews
Aer Lingus
7.1
Good
1,170 reviews
Check prices

Food

6.4

Crew

8.0

Comfort

7.0

Entertainment

6.8

Boarding

7.3

Overall

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.
British Airways
6.6
Okay
7,151 reviews
Aer Lingus
7.1
Good
1,170 reviews
Check prices

Food

6.4

Crew

8.0

Comfort

7.0

Entertainment

6.8

Boarding

7.3

Overall

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.

Related info for your journey

Find useful and relevant information for your journey from Southampton to Castletown. 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 flying from Southampton to Castletown round-trip?

    Currently priced at £264, Aer Lingus will fly you from Southampton to Castletown and back. In addition to Aer Lingus, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Loganair and British Airways - these airlines can fly you to your destination from £280 and £504, respectively.

  • Can I find deals for flights from Southampton to Castletown that include hotel bookings?

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

  • How can I find direct flights from Southampton to Castletown?

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

  • Can I find deals for business class flights from Southampton to Castletown?

    Yes. Cheapflights offers flight deals from Southampton to Castletown 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 Southampton to Castletown?

    Currently, March is the cheapest month in which you can book a flight from Southampton to Castletown (average of £86). Flying from Southampton to Castletown in July is currently the most expensive (average of £119). 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

Travelling to a place near Castletown?

Book flights to Castletown if you plan to visit one of these locations
Douglas

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Can Cheapflights find flights from Southampton to Castletown with no change fees?

Certainly. Search results for flights to Castletown from Southampton shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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