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Portsmouth

$55+ Cheap flights from Portsmouth

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — JFK
May 3 — May 101
Sun 5/3
Sun 5/10
1 adult, Economy
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Find flights from Portsmouth within your budget

 
Find flights departing from Portsmouth that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on April 3, 2026. In the last 7 days, Cheapflights users made a total of 2,558,603 searches

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SouthamptonAthens

SOU - ATH

SOUATH

Southampton Eastleigh

Tue 5/12

5:20 pm-1:15 am

1 stop5h 55m

Athens Eleftherios V.

Sun 5/31

5:45 pm-8:35 am

1 stop16h 50m

$453

SouthamptonAthens

SOU - ATH

SOUATH

Southampton Eastleigh

Mon 5/18

6:50 am-1:05 pm

2 stops28h 15m

Athens Eleftherios V.

Wed 5/20

4:15 pm-9:25 am

2 stops19h 10m

$683

SouthamptonAthens

SOU - ATH

SOUATH

Southampton Eastleigh

Tue 5/5

6:50 am-2:10 am

2 stops17h 20m

Athens Eleftherios V.

Fri 5/8

3:20 pm-11:45 am

2 stops22h 25m

$696

SouthamptonNewark

SOU - EWR

SOUEWR

Southampton Eastleigh

Thu 4/23

8:00 pm-4:05 pm

1 stop25h 05m

Newark

Mon 4/27

5:35 pm-8:40 am

1 stop10h 05m

$717

SouthamptonNewark

SOU - EWR

SOUEWR

Southampton Eastleigh

Mon 5/4

9:20 am-4:05 pm

1 stop11h 45m

Newark

Sun 5/10

5:50 pm-12:05 pm

2 stops13h 15m

$728

SouthamptonAthens

SOU - ATH

SOUATH

Southampton Eastleigh

Tue 4/28

3:15 pm-1:10 pm

2 stops19h 55m

Athens Eleftherios V.

Tue 5/12

5:30 pm-8:25 am

2 stops16h 55m

$741

SouthamptonAthens

SOU - ATH

SOUATH

Southampton Eastleigh

Mon 4/27

7:55 pm-7:05 pm

2 stops21h 10m

Athens Eleftherios V.

Mon 5/11

8:50 pm-2:45 pm

2 stops19h 55m

$743

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Wed 5/13

9:20 am-7:20 pm

1 stop15h 00m

New York John F Kennedy Intl

Sun 5/17

9:35 am-12:05 pm

2 stops21h 30m

$748

SouthamptonNew York

SOU - JFK

SOUJFK

Southampton Eastleigh

Sun 5/3

12:35 pm-11:10 am

2 stops27h 35m

New York John F Kennedy Intl

Mon 5/11

4:55 pm-8:40 am

1 stop10h 45m

$752

SouthamptonAthens

SOU - ATH

SOUATH

Southampton Eastleigh

Tue 9/29

3:15 pm-1:10 pm

2 stops19h 55m

Athens Eleftherios V.

Tue 10/13

8:00 pm-2:45 pm

2 stops20h 45m

$760

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Portsmouth

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

Travel insights for flights from Portsmouth

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

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

Currently, August is the cheapest month in which you can book a flight from Portsmouth (average of $130). Flying from Portsmouth in July will prove the most costly (average of $455). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

When is the cheapest time to fly from Portsmouth?

Use this chart to determine the cheapest time to fly round-trip from Portsmouth to John F Kennedy Intl. Price data was last updated on March 28, 2026.

Those who are seeking the cheapest fare on flights departing from Portsmouth would be wise to consider leaving during Sunday evenings when prices are typically at their lowest. When considering other options, price-conscious travelers should avoid Tuesday mornings when fares are usually the most expensive.

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Related info for your journey

Access useful and relevant information related to your journey from Portsmouth. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated April 3, 2026.

  • What is the cheapest airport to fly out of Portsmouth?

    Istanbul airport offers the cheapest routes to Dubai, from $23; whereas Cheongju airport is typically cheaper if you're flying to Jeju City, from $24. It's best to make sure you are flexible on dates to find the cheapest possible flight options for your journey.

  • What is the cheapest month to fly from Portsmouth?

    August is currently the cheapest month to fly from Portsmouth. At this moment in time July is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.

  • Where are the cheapest places to fly to from Portsmouth?

    Check out the cheapest flights from Portsmouth to embark to:
    Fly from Istanbul to Ankara from $23 round trip
    Fly from Cheongju to Jeju City from $24 round trip
    Fly from Medellín to Cartagena from $24 round trip
    Fly from Cartagena to Medellín from $25 round trip
    Fly from Valencia to Palma de Mallorca from $25 round trip

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