Find flights
When to book
FAQs

Cheap flights from Southampton to Key Largo from £390

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 27/10. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — MIA
11 Jun — 18 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap 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 12 May 2026.

Tue 10/1120:00
SOU
-
MIA
1 stop26h 10m
British Airways
Tue 1/1222:00
MIA
-
SOU
2 stops14h 40m
British Airways
Deal found 12/5£733
Mon 9/1119:55
SOU
-
MIA
2 stops23h 45m
British Airways
Mon 30/1122:00
MIA
-
SOU
2 stops14h 40m
British Airways
Deal found 11/5£758
Fri 5/617:20
SOU
-
MIA
1 stop26h 25m
KLM
Tue 9/616:55
MIA
-
SOU
1 stop18h 55m
KLM
Deal found 7/5£773
Sat 7/1117:05
SOU
-
MIA
1 stop29h 05m
British Airways
Sat 28/1122:00
MIA
-
SOU
2 stops17h 45m
British Airways
Deal found 9/5£793
Fri 6/1109:20
SOU
-
MIA
1 stop12h 50m
British Airways
Fri 27/1119:05
MIA
-
SOU
1 stop16h 30m
British Airways
Deal found 8/5£795
Mon 15/617:20
SOU
-
MIA
1 stop26h 25m
Virgin Atlantic
Sun 21/616:55
MIA
-
SOU
1 stop18h 55m
Virgin Atlantic
Deal found 10/5£799
Fri 5/609:05
SOU
-
MIA
2 stops20h 42m
Delta
Tue 9/607:05
MIA
-
SOU
2 stops20h 30m
Delta
Deal found 8/5£801

Find 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 12 May 2026.

Round-trip from

£793

One-way from

£390

Popular in

December

Cheapest in

September

Average price

£521
British Airways
  • British Airways
  • 7/11-28/11
  • 3 total stops
  • 46h 50m total
  • Southampton to Key Largo
Search Deals
27/10
  • 27/10
  • 2 total stops
  • 29h 00m total
  • Southampton to Key Largo
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 12 May 2026.
Use the filters below to find and compare flights from Southampton to Key Largo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Fri 5/6

17:20-14:45

1 stop26h 25m

Miami

Tue 9/6

16:55-16:50

1 stop18h 55m

£773

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Mon 15/6

17:20-14:45

1 stop26h 25m

Miami

Sun 21/6

16:55-16:50

1 stop18h 55m

£799

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Fri 5/6

09:05-00:47

2 stops20h 42m

Miami

Tue 9/6

07:05-08:35

2 stops20h 30m

£801

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Mon 25/5

17:20-14:45

1 stop26h 25m

Miami

Tue 2/6

11:37-16:50

2 stops24h 13m

£839

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Tue 2/6

09:05-21:18

2 stops17h 13m

Miami

Thu 11/6

11:23-16:50

2 stops24h 27m

£843
Fastest return journey

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Wed 3/6

09:05-21:18

2 stops17h 13m

Miami

Thu 11/6

07:05-08:35

2 stops20h 30m

£843

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Mon 25/5

17:20-16:46

2 stops28h 26m

Miami

Mon 1/6

11:10-08:35

2 stops16h 25m

£843

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Mon 15/6

09:05-23:21

2 stops19h 16m

Miami

Sun 21/6

07:05-08:35

2 stops20h 30m

£844
Cheapest one-way

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Tue 27/10

20:00-18:10

1 stop26h 10m

£447

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

Sun 28/6

08:25-20:40

3 stops41h 15m

£553

Flights are sorted by cheapest return flights first.

Deals found on 10/5

Showing 1-10 of 20 resultsSorted by cheapest first
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
No data available for this route at this time. Please check back soon.

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 26h 25m. KLM provides one of the quickest options available for as low as £773. There are 4381 mi between Southampton and Key Largo.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Southampton to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Orlando flights
Heathrow to Miami flights
Manchester to Orlando flights
Gatwick to Orlando flights
Stansted to Orlando flights
Gatwick to Miami flights
Stansted to Miami flights
London City to Miami flights
Heathrow to Tampa flights
London City to Orlando flights
Luton to Miami flights
Edinburgh to Orlando flights
Luton to Orlando flights
Gatwick to Fort Lauderdale flights
Heathrow to Fort Lauderdale flights
Gatwick to Tampa flights
Stansted to Tampa flights
London City to Tampa flights
Manchester to Miami flights
Luton to Tampa flights
Southend to Miami flights
Heathrow to West Palm Beach flights
Heathrow to Fort Myers flights
Gatwick to West Palm Beach flights
Manchester to Tampa flights
Birmingham to Orlando flights
Edinburgh to Miami flights
Luton to Fort Lauderdale flights
Gatwick to Fort Myers flights
Stansted to Fort Myers flights
London City to Fort Lauderdale flights
Manchester to Fort Lauderdale flights
Heathrow to Jacksonville flights
Southampton to Miami flights
Heathrow to Panama City flights
Leeds to Orlando flights
Heathrow to Pensacola flights
Birmingham to Tampa flights
Edinburgh to Tampa flights
Newcastle upon Tyne to Orlando flights
Birmingham to Miami flights
Heathrow to Melbourne flights
Stansted to Fort Lauderdale flights
London City to Fort Myers flights
Heathrow to Daytona Beach flights
Southend to Orlando flights
Heathrow to Key West flights
Leeds to Miami flights
Manchester to Melbourne flights
Southampton to Orlando 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 Southampton to Key Largo?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Key Largo from Southampton today with Cheapflights!

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Southampton to Key Largo for you. Better yet — we are completely free to use.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.