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Cheap flights from Southampton to Key Largo from £492

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — MIA
6 joulu — 13 joulu1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Southampton to Key Largo

Keep the following information in mind while searching for Southampton to Key Largo flight deals. Data was last updated 6 marraskuu 2025.

Round-trip from

£492

Popular in

February

Cheapest in

October

Average price

£853
Delta
  • Delta
  • 7/3-11/3
  • 4 total stops
  • 40h 15m total
  • Southampton to Key Largo
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£30 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£41 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Southampton to Key Largo

Enter your travel dates to find the best prices.

Cheapest flights from Southampton to Key Largo
Explore the most affordable flight options available from Southampton to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 marraskuu 2025.

to 18/1209:30SOU - MIA
2 stops37h 00mMultiple Airlines
to 25/1207:25MIA - SOU
2 stops27h 10mMultiple Airlines
Deal found 5/11£864
to 18/1218:05SOU - MIA
1 stop25h 45mKLM
to 25/1216:50MIA - SOU
1 stop19h 10mKLM
Deal found 5/11£979
ti 23/1217:30SOU - MIA
2 stops36h 01mDelta
to 1/107:25MIA - SOU
2 stops28h 35mDelta
Deal found 5/11£1,067
pe 19/1209:30SOU - MIA
2 stops20h 29mAer Lingus
pe 26/1219:05MIA - SOU
1 stop32h 40mAer Lingus
Deal found 4/11£1,114
ke 24/1208:40SOU - MIA
2 stops20h 51mDelta
to 1/119:29MIA - SOU
2 stops16h 31mDelta
Deal found 5/11£1,151
pe 19/1217:30SOU - MIA
3 stops33h 51mMultiple Airlines
pe 26/1216:40MIA - SOU
3 stops35h 10mMultiple Airlines
Deal found 4/11£1,172
ke 19/1119:55SOU - MIA
2 stops23h 45mBritish Airways
ma 24/1117:10MIA - SOU
3 stops15h 55mBritish Airways
Deal found 5/11£1,379

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southampton to Key Largo 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 6 marraskuu 2025.
Use the filters below to find and compare flights from Southampton to Key Largo that are best for you.

Fly from

Southampton

Fly to

Key Largo

Route

Depart

Return

Price

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

la 7/3

09:25-23:20

2 stops18h 55m

Miami

ke 11/3

07:00-08:20

2 stops21h 20m

£492

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

la 7/3

06:50-19:30

2 stops17h 40m

Miami

ke 11/3

20:55-19:40

1 stop18h 45m

£737

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

to 18/12

18:05-14:50

1 stop25h 45m

Miami

to 25/12

16:50-17:00

1 stop19h 10m

£979

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

to 18/12

18:05-22:21

3 stops33h 16m

Miami

to 25/12

10:40-15:35

3 stops23h 55m

£1,010

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

ti 23/12

17:30-00:31

2 stops36h 01m

Miami

to 1/1

07:25-17:00

2 stops28h 35m

£1,067

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

pe 19/12

09:30-00:59

2 stops20h 29m

Miami

pe 26/12

19:05-08:45

1 stop32h 40m

£1,114

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

ma 15/12

20:50-19:30

2 stops27h 40m

£620

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

ke 12/11

08:55-19:30

2 stops15h 35m

£664

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

su 4/1

20:00-19:30

2 stops28h 30m

£790

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

ti 11/11

08:40-00:46

2 stops21h 06m

£1,140

Flights are sorted by cheapest return flights first.

Deals found on 3/11

Showing 1-10 of 14 results
1
2

Best time to book a flight from Southampton to Key Largo

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

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

Currently, May is the cheapest month in which you can book a flight from Southampton to Key Largo (average of £236). Flying from Southampton to Key Largo in July is currently the most expensive (average of £364). 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 Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Southampton to Key Largo?

    Southampton Eastleigh (SOU), located 3.5 mi from the city center, is the airport you fly out of when you book flights from Southampton to Key Largo. 0 airlines have flights from Eastleigh to Key Largo on a regular basis. Booking flights from Southampton Eastleigh to Key Largo should not be difficult; the airport handles an average of 0 outbound flights to Key Largo per day.

  • How long is the flight from Southampton to Key Largo?

    A quick flight from Southampton to Key Largo can take about 17h 40m. Delta provides one of the quickest options available for as low as £737. There are 4381 mi between Southampton and Key Largo. This flight may include one or multiple stops.

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

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

  • How can I find direct flights from Southampton to Key Largo?

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

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

    Yes. Cheapflights offers flight deals from Southampton to Key Largo 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 Key Largo?

    Currently, May is the cheapest month in which you can book a flight from Southampton to Key Largo (average of £236). Flying from Southampton to Key Largo in July is currently the most expensive (average of £364). 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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Fly with Cheapflights

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How does Cheapflights help users find flights from Southampton to Key Largo?

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

Yes, we can. To see specific flights from Southampton to Key Largo 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 from Southampton to Key Largo become cheaper?

Yes! Start tracking prices for Southampton to Key Largo flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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