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Cheap flights from Southampton to Castletown from £121

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — IOM
22 Apr — 29 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Southampton to Castletown

Enter your travel dates to find the best prices.

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 23 March 2026.

Mon 23/308:30
SOU
-
IOM
2 stops34h 20m
Multiple Airlines
Sat 28/314:10
IOM
-
SOU
1 stop2h 30m
Multiple Airlines
Deal found 19/3£245
Sun 24/514:50
SOU
-
IOM
1 stop17h 50m
Multiple Airlines
Sun 31/515:20
IOM
-
SOU
1 stop17h 05m
Multiple Airlines
Deal found 21/3£256
Fri 10/706:50
SOU
-
IOM
1 stop10h 05m
Multiple Airlines
Fri 17/717:25
IOM
-
SOU
1 stop3h 20m
Multiple Airlines
Deal found 20/3£259
Sun 22/309:30
SOU
-
IOM
2 stops21h 55m
Multiple Airlines
Sat 28/314:10
IOM
-
SOU
1 stop2h 30m
Multiple Airlines
Deal found 19/3£278
Mon 23/320:10
SOU
-
IOM
1 stop20h 40m
Multiple Airlines
Mon 30/313:35
IOM
-
SOU
2 stops19h 05m
Multiple Airlines
Deal found 19/3£280
Sat 21/315:25
SOU
-
IOM
2 stops15h 45m
Multiple Airlines
Sat 28/314:10
IOM
-
SOU
1 stop2h 30m
Multiple Airlines
Deal found 19/3£289
Fri 24/406:50
SOU
-
IOM
1 stop10h 55m
Loganair
Mon 27/409:40
IOM
-
SOU
1 stop11h 05m
Loganair
Deal found 18/3£294
Mon 23/320:10
SOU
-
IOM
1 stop20h 40m
Multiple Airlines
Sun 29/317:10
IOM
-
SOU
1 stop16h 15m
Multiple Airlines
Deal found 19/3£305

Find 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 23 March 2026.

Round-trip from

£256

One-way from

£121

Popular in

June

Cheapest in

January

Average price

£82
Aer Lingus
  • Aer Lingus
  • 24/5-31/5
  • 2 total stops
  • 34h 55m total
  • Southampton to Castletown
Search Deals
6/9
  • 6/9
  • 1 total stop
  • 17h 50m total
  • Southampton to Castletown
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (£33 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 23 March 2026.
Use the filters below to find and compare flights from Southampton to Castletown that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Sun 24/5

14:50-08:40

1 stop17h 50m

Castletown Ronaldsway

Sun 31/5

15:20-08:25

1 stop17h 05m

£256

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Fri 10/7

06:50-16:55

1 stop10h 05m

Castletown Ronaldsway

Fri 17/7

17:25-20:45

1 stop3h 20m

£259
Fastest return journey

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Thu 9/4

06:50-13:25

1 stop6h 35m

Castletown Ronaldsway

Sat 11/4

07:00-11:45

1 stop4h 45m

£280

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Fri 24/4

06:50-17:45

1 stop10h 55m

Castletown Ronaldsway

Mon 27/4

09:40-17:40

1 stop8h 00m

£310

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Thu 2/4

12:35-17:30

1 stop4h 55m

Castletown Ronaldsway

Mon 6/4

18:25-17:15

2 stops22h 50m

£374

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Sun 5/4

14:50-11:50

1 stop21h 00m

Castletown Ronaldsway

Thu 9/4

15:20-09:25

1 stop18h 05m

£386

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Thu 4/6

08:55-11:00

1 stop26h 05m

Castletown Ronaldsway

Sat 6/6

07:00-11:45

1 stop4h 45m

£454
Cheapest one-way
Fastest single journey

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Mon 7/9

12:35-17:45

1 stop5h 10m

£134

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Sat 5/9

20:00-11:45

1 stop15h 45m

£202

SouthamptonCastletown

SOU - IOM

SOUIOM

Southampton Eastleigh

Mon 7/9

20:00-11:45

1 stop15h 45m

£204

Flights are sorted by cheapest return flights first.

Deals found on 22/3

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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, December is the cheapest month in which you can book a flight from Southampton to Castletown (average of £37). Flying from Southampton to Castletown in August is currently the most expensive (average of £81). 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.

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.

  • How long is the flight from Southampton to Castletown?

    Departing from Southampton to Castletown will take you 6h 35m. There are 256 mi between Southampton and Castletown.

  • 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, December is the cheapest month in which you can book a flight from Southampton to Castletown (average of £37). Flying from Southampton to Castletown in August is currently the most expensive (average of £81). 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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How does Cheapflights help users find flights from Southampton to Castletown?

Cheapflights makes it easy to find Southampton to Castletown flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Southampton to Castletown?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Castletown from Southampton.

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.

Can Cheapflights notify me if prices for flights from Southampton to Castletown become cheaper?

Of course! You can now track prices for flights from Southampton to Castletown and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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