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Cheap flights from Portsmouth to Key Largo from £367

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 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — MIA
26 fev — 5 mar1
1 adult

Cheap flight deals from Portsmouth to Key Largo

Keep the following information in mind while searching for Portsmouth to Key Largo flight deals. Data was last updated 21 fevereiro 2025.

Round-trip from

£616

One-way from

£367

Popular in

December

Cheapest in

September

Average price

£474
Virgin Atlantic
  • Virgin Atlantic
  • 20/4-30/4
  • 4 total stops
  • 73h 17m total
  • Portsmouth to Key Largo
Search Deals
21/4
  • 21/4
  • 1 total stop
  • 28h 55m total
  • Portsmouth to Key Largo
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (£3 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Portsmouth to Key Largo

Cheapest flights from Portsmouth to Key Largo
Explore the most affordable flight options available from Portsmouth to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 fevereiro 2025.

dom 20/418:25SOU - MIA
2 stops27h 32mVirgin Atlantic
qua 30/406:00MIA - SOU
2 stops45h 45mVirgin Atlantic
Deal found 21/2£616
seg 20/1017:35SOU - MIA
2 stops26h 26mDelta
seg 3/1108:30MIA - SOU
2 stops18h 55mDelta
Deal found 20/2£703
dom 6/420:00SOU - MIA
3 stops30h 04mMultiple Airlines
dom 13/417:15MIA - SOU
2 stops33h 15mMultiple Airlines
Deal found 20/2£855
dom 6/420:00SOU - MIA
2 stops40h 51mAer Lingus
dom 13/406:00MIA - SOU
2 stops45h 15mAer Lingus
Deal found 20/2£926

Find flights from Portsmouth to Key Largo within your budget

Customise your flight search to find flights from Portsmouth 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 21 fevereiro 2025.

Fly from

Portsmouth

Fly to

Key Largo

Route

Depart

Return

Price

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

dom 20/4

18:25-16:57

2 stops27h 32m

Miami

qua 30/4

06:00-08:45

2 stops45h 45m

£616

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

dom 6/4

20:00-21:04

3 stops30h 04m

Miami

dom 13/4

17:15-07:30

2 stops33h 15m

£855

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

dom 13/4

18:25-20:43

2 stops31h 18m

Miami

ter 22/4

11:14-08:45

2 stops16h 31m

£904

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

dom 6/4

20:00-07:51

2 stops40h 51m

Miami

dom 13/4

06:00-08:15

2 stops45h 15m

£926

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

seg 21/4

19:25-19:20

1 stop28h 55m

£367

SouthamptonMiami

SOU - MIA

SOUMIA

Southampton Eastleigh

seg 3/3

09:00-14:45

1 stop34h 45m

£1,126

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Best time to book a flight from Portsmouth to Key Largo

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

Travel insights for flights from Portsmouth to Key Largo

Get recent, data-driven insights about flights from Portsmouth to Key Largo including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Portsmouth to Key Largo (average of £559). Flying from Portsmouth to Key Largo in July is currently the most expensive (average of £760). 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.

What is the cheapest time of day to fly from P0R to KE9?

Find hourly flight availability from Portsmouth to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 fevereiro 2025.

When flying from Portsmouth to Key Largo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Portsmouth to Key Largo?

Use this chart to determine the cheapest time to fly return from Portsmouth to Key Largo. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Portsmouth to Key Largo flight should consider departing on Saturday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Portsmouth to Key Largo

Explore weekly flight availability from Portsmouth to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 21 fevereiro 2025.

The most flights from P0R to KE9 are scheduled on a Wednesday (33 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (32 on average).

Rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key Largo ranges from 41.0 - 252.0 inches per month. September is typically the wettest month, when rainfall can reach 252.0 mm. January is typically the driest time to visit Key Largo when rainfall is around 41.0 mm.

Temperature in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 20.0 C).

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated 21 fevereiro 2025.
Delta
8.0
Very Good
8,212 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Delta
8.0
Very Good
8,212 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Aer Lingus
7.0
Good
1,070 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Reviews

1 / 20

6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Related info for your journey

Find useful and relevant information for your journey from Portsmouth 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 are the most reliable airlines from Portsmouth to Key Largo?

    The top 3 most reliable airlines when flying from Portsmouth to Key Largo are Malaysia Airlines (90%), Gulf Air (81%) and Air France (78%).

  • What are the cheapest flights from Portsmouth to Key Largo?

    Looking at all options, your cheapest flight can be booked for £416. While the most popular route (Southampton Eastleigh - Miami) can be booked for £553 on average our data indicates £1,220 when flying from Portsmouth to Key Largo.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Portsmouth to Key Largo (average of £559). Flying from Portsmouth to Key Largo in July is currently the most expensive (average of £760). 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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Top 10 airlines flying from Portsmouth to Key Largo

Discover the top 10 airlines that operate flights from Portsmouth to Key Largo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 21 fevereiro 2025.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£257Average£459FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
DeltaCheapest£327Average£553FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
TAP AIR PORTUGALCheapest£350Average£458FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesCheapest£364Average£533FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Virgin AtlanticCheapest£365Average£550FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air FranceCheapest£383Average£549FlexibilityNo cancel feeOn-time77%
Search Air France flights
British AirwaysCheapest£384Average£560FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£387Average£505FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£391Average£573FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air EuropaCheapest£401Average£460FlexibilityNo cancel feeOn-time83%
Search Air Europa flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Portsmouth to Key Largo via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

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 Key Largo from Portsmouth.

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

Certainly. Search results for flights to Key Largo from Portsmouth 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 Portsmouth to Key Largo become cheaper?

Yes! Start tracking prices for Portsmouth 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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