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$270+ Cheap flights from Key Largo, FL to Southampton (SOU)

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SOU
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Key Largo to Southampton

Cheapest flights from Key Largo to Southampton
Explore the most affordable flight options available from Key Largo to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This KLM deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:35 am
MIA
-
SOU
2 stops16h 10m
KLM
Sun 9/279:15 am
SOU
-
MIA
2 stops18h 58m
KLM
Deal found 1/27$915
This Expedia deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:55 pm
MIA
-
SOU
1 stop10h 50m
Multiple Airlines
Sun 9/278:45 pm
SOU
-
MIA
2 stops22h 45m
Multiple Airlines
Deal found 1/27$978
This Trip.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:00 pm
MIA
-
SOU
2 stops19h 40m
Multiple Airlines
Sun 10/182:50 pm
SOU
-
MIA
2 stops34h 25m
Multiple Airlines
Deal found 1/27$1,001
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:20 am
MIA
-
SOU
2 stops24h 30m
Delta
Wed 6/105:20 pm
SOU
-
MIA
1 stop26h 25m
Delta
Deal found 1/27$1,044
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/111:20 am
MIA
-
SOU
2 stops16h 15m
Delta
Thu 6/45:20 pm
SOU
-
MIA
2 stops30h 25m
Delta
Deal found 1/27$1,053
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:20 am
MIA
-
SOU
2 stops24h 30m
Delta
Fri 6/59:05 am
SOU
-
MIA
2 stops19h 08m
Delta
Deal found 1/27$1,054
This Delta deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:55 pm
MIA
-
SOU
2 stops39h 55m
Delta
Mon 6/15:20 pm
SOU
-
MIA
1 stop26h 25m
Delta
Deal found 1/28$1,078
This Priceline deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:00 pm
MIA
-
SOU
2 stops34h 40m
Aer Lingus
Sat 8/159:10 am
SOU
-
MIA
2 stops20h 36m
Aer Lingus
Deal found 1/26$1,093
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/111:20 am
MIA
-
SOU
2 stops16h 15m
Delta
Fri 6/55:20 pm
SOU
-
MIA
1 stop26h 25m
Delta
Deal found 1/27$1,104

Find flight deals from Key Largo to Southampton

Keep the following information in mind while searching for Key Largo to Southampton flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,044
(Delta)

One-way from

$270
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$641
Provider with most accurate pricing for Miami-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Miami-London (LON) flights.
Search Deals
From Key Largo to Southampton Eastleigh
Search Deals
One-way flight from Key Largo to Southampton Eastleigh
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($116 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Southampton 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 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Key Largo to Southampton that are best for you.

Fly from

Key Largo

Fly to

Southampton

Route

Depart

Return

Price

MiamiSouthampton

MIA - SOU

MIASOU

Miami

Mon 6/1

11:20 am-8:35 am

2 stops16h 15m

Southampton Eastleigh

Wed 6/10

5:20 pm-2:45 pm

1 stop26h 25m

$1,044

MiamiSouthampton

MIA - SOU

MIASOU

Miami

Wed 5/27

11:20 am-4:50 pm

2 stops24h 30m

Southampton Eastleigh

Wed 6/10

5:20 pm-2:45 pm

1 stop26h 25m

$1,044

MiamiSouthampton

MIA - SOU

MIASOU

Miami

Wed 5/27

7:00 am-8:35 am

2 stops20h 35m

Southampton Eastleigh

Thu 6/4

5:20 pm-5:09 pm

2 stops28h 49m

$1,053

MiamiSouthampton

MIA - SOU

MIASOU

Miami

Wed 5/27

7:00 am-8:35 am

2 stops20h 35m

Southampton Eastleigh

Tue 6/9

5:20 pm-5:21 pm

2 stops29h 01m

$1,053

MiamiSouthampton

MIA - SOU

MIASOU

Miami

Tue 5/26

11:20 am-8:35 am

2 stops16h 15m

Southampton Eastleigh

Thu 6/4

5:20 pm-5:21 pm

2 stops29h 01m

$1,053

MiamiSouthampton

MIA - SOU

MIASOU

Miami

Mon 6/1

11:20 am-8:35 am

2 stops16h 15m

Southampton Eastleigh

Thu 6/4

5:20 pm-6:45 pm

2 stops30h 25m

$1,053

MiamiSouthampton

MIA - SOU

MIASOU

Miami

Mon 6/1

11:20 am-8:35 am

2 stops16h 15m

Southampton Eastleigh

Mon 6/8

5:20 pm-5:09 pm

2 stops28h 49m

$1,053

MiamiSouthampton

MIA - SOU

MIASOU

Miami

Mon 6/1

11:20 am-8:35 am

2 stops16h 15m

Southampton Eastleigh

Fri 6/5

9:05 am-11:13 pm

2 stops19h 08m

$1,054

MiamiSouthampton

MIA - SOU

MIASOU

Miami

Tue 5/26

11:20 am-4:50 pm

2 stops24h 30m

Southampton Eastleigh

Fri 6/5

9:05 am-11:13 pm

2 stops19h 08m

$1,054

MiamiSouthampton

MIA - SOU

MIASOU

Miami

Mon 6/8

11:15 am-8:35 am

2 stops16h 20m

Southampton Eastleigh

Tue 6/16

9:05 am-5:09 pm

2 stops37h 04m

$1,054

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 19 results
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Best time to book a flight from Key Largo to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Key Largo with our price prediction graph.
Estimated round-trip 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 Key Largo to Southampton

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

Currently, January is the cheapest month in which you can book a flight from Key Largo to Southampton (average of $284). Flying from Key Largo to Southampton in December is currently the most expensive (average of $592). 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 Key Largo to Southampton. 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 into for flights to Southampton from Key Largo?

    Southampton Eastleigh (SOU) is the airport you will fly into if you book a flight from Key Largo to Southampton. You should not have trouble finding flights to Eastleigh from Key Largo; the airport handles an average of 0 inbound flights from Key Largo per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Southampton airport from Key Largo. It is only a 3.5 mi journey from Eastleigh (SOU) to Southampton’s city center.

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

    Departing from Key Largo to Southampton will take you 16h 15m. The distance between Key Largo and Southampton is about 4381 mi.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Key Largo to Southampton (average of $284). Flying from Key Largo to Southampton in December is currently the most expensive (average of $592). 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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