HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portsmouth

$5,824+ Cheap flights from Atlanta (ATL) to Portsmouth, England

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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — LHR
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Atlanta to Portsmouth with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Atlanta to Portsmouth

Best flights from Atlanta to Portsmouth
Discover carefully curated flight deals from Atlanta to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 15, 2025.

This British Airways deal was found by Cheapflights users on 12/12. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2810:10 pmATL - SOU
2 stops17h 50mBritish Airways
Sun 2/12:55 pmSOU - ATL
2 stops34h 15mBritish Airways
Deal found 12/12$5,824

Find flight deals from Atlanta to Portsmouth

Keep the following information in mind while searching for Atlanta to Portsmouth flight deals. Data was last updated December 15, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$5,824
(British Airways)

Popular in

July

Cheapest in

January

Average price

$2,076
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-London (LON) flights.
Search Deals
From Atlanta Hartsfield-Jackson to Portsmouth
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($317 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($74 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Atlanta to Portsmouth 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 December 15, 2025.
Use the filters below to find and compare flights from Atlanta to Portsmouth that are best for you.

Fly from

Atlanta

Fly to

Portsmouth

Route

Depart

Return

Price

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Wed 1/28

10:10 pm-9:00 pm

2 stops17h 50m

Southampton Eastleigh

Sun 2/1

2:55 pm-8:10 pm

2 stops34h 15m

$5,824

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

Best time to book a flight from Atlanta to Portsmouth

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

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

Currently, October is the cheapest month in which you can book a flight from Atlanta to Portsmouth (average of $95). Flying from Atlanta to Portsmouth in June is currently the most expensive (average of $834). 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 ATL to P0R?

Find hourly flight availability from Atlanta to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

It’s optimal to fly from Atlanta to Portsmouth in the evening. By choosing this option you can save up to 17% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Atlanta to Portsmouth?

Use this chart to determine the cheapest time to fly round-trip from Atlanta to Portsmouth. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Atlanta to Portsmouth flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Atlanta to Portsmouth

Explore weekly flight availability from Atlanta to Portsmouth. 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 December 15, 2025.

The most flights from ATL to P0R are scheduled on a Friday (24 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (23 on average).

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. 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 Portsmouth. Reviews last updated December 15, 2025.
See what other customers who have flown with Delta from Atlanta to Portsmouth have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Atlanta to Portsmouth. 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 Atlanta to Portsmouth?

    For a flight from Atlanta to Portsmouth, you will be flying from Hartsfield-Jackson. Atlanta Hartsfield-Jackson (ATL) is just 8.2 mi from the center of the city. Hartsfield-Jackson is the only Atlanta airport and it handles 0 outbound flights to Portsmouth per day. 15 airlines have flights to Portsmouth from Atlanta Hartsfield-Jackson on a regular basis.

  • How long is the flight from Atlanta to Portsmouth?

    British Airways can get you from Atlanta to Portsmouth in just under 17h 50m. Your travel time can differ by up to . Atlanta and Portsmouth are separated by a distance of 4172 mi.

  • What are the most reliable airlines from Atlanta to Portsmouth?

    No one likes to see their flight delayed. When booking a flight from Atlanta to Portsmouth consider choosing KLM (82%), American Airlines (81%) or Aer Lingus (81%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Atlanta to Portsmouth?

    Looking for the cheapest flight from Atlanta to Portsmouth? While on average our users pay $2,331, our data indicates the cheapest price to be $346. The most popular route (Atlanta Hartsfield-Jackson - Southampton Eastleigh), is priced around $5,825.

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

    Yes. In addition to deals on Atlanta to Portsmouth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Atlanta to Portsmouth?

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

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

    Yes. Cheapflights offers flight deals from Atlanta to Portsmouth 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 Atlanta to Portsmouth?

    Currently, October is the cheapest month in which you can book a flight from Atlanta to Portsmouth (average of $95). Flying from Atlanta to Portsmouth in June is currently the most expensive (average of $834). 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

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 Atlanta to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
Atlanta to Heathrow flights
Atlanta to Gatwick flights
Atlanta to London City flights
Atlanta to Stansted flights
Atlanta to Edinburgh flights
Jacksonville to Heathrow flights
Atlanta to Manchester flights
Jacksonville to Gatwick flights
Savannah to Heathrow flights
Atlanta to Luton flights
Jacksonville to Edinburgh flights
Savannah to Gatwick flights
Jacksonville to London City flights
Savannah to London City flights
Tallahassee to Heathrow flights
Asheville to Heathrow flights
Chattanooga to Heathrow flights
Chattanooga to Manchester flights
Atlanta to Birmingham flights
Savannah to Edinburgh flights
Tallahassee to Gatwick flights
Tallahassee to London City flights
Jacksonville to Manchester flights
Chattanooga to Edinburgh flights
Asheville to Edinburgh flights
Asheville to Gatwick flights
Tallahassee to Edinburgh flights
Atlanta to Newcastle upon Tyne flights
Savannah to Manchester flights
Valdosta to Heathrow flights
Augusta to Heathrow flights
Atlanta to Leeds flights
Asheville to Manchester flights
Asheville to Birmingham flights
Jacksonville to Birmingham flights
Atlanta to Liverpool flights
Albany to Heathrow flights
Jacksonville to Leeds flights
Atlanta to Southampton flights
Brunswick to Heathrow flights
Asheville to Leeds flights
Savannah to Leeds flights
Tallahassee to Birmingham flights
Savannah to Birmingham flights
Chattanooga to London City flights
Augusta to Leeds flights
Chattanooga to Bristol flights
Asheville to Newcastle upon Tyne flights

Top 10 airlines flying from Atlanta to Portsmouth

Discover the top 10 airlines that operate flights from Atlanta to Portsmouth. 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 2,558,603 searches. Data last updated December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$743FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$427Average$606FlexibilityNo cancel feeOn-time77%
DeltaCheapest$486Average$1,110FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$511Average$872FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$515Average$801FlexibilityNo cancel feeOn-time70%
IberiaCheapest$565Average$819FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$573Average$834FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$576Average$899FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$594Average$825FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$596Average$795FlexibilityNo cancel feeOn-time67%

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.