HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portsmouth

$276+ Cheap flights from Atlanta (ATL) to Portsmouth, England

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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — LHR
Jul 31 — Aug 71
Fri 7/31
Fri 8/7
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

Cheapest flights from Atlanta to Portsmouth
Explore the most affordable flight options available from Atlanta to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2026.

This KLM deal was found by Cheapflights users on 6/26. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:10 pm
ATL
-
SOU
1 stop18h 40m
KLM
Mon 11/25:30 pm
SOU
-
ATL
1 stop26h 30m
KLM
Deal found 6/26$1,028
This Delta deal was found by Cheapflights users on 6/30. 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 10/209:32 am
ATL
-
SOU
2 stops18h 13m
Delta
Fri 10/308:40 am
SOU
-
ATL
1 stop17h 05m
Delta
Deal found 6/30$1,034
This Delta deal was found by Cheapflights users on 6/30. 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.
Sun 9/1310:40 pm
ATL
-
SOU
1 stop13h 10m
Delta
Thu 9/245:20 pm
SOU
-
ATL
1 stop25h 40m
Delta
Deal found 6/30$1,089
This Delta deal was found by Cheapflights users on 6/30. 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.
Sun 9/1311:30 am
ATL
-
SOU
2 stops16h 05m
Delta
Wed 9/239:15 am
SOU
-
ATL
1 stop12h 45m
Delta
Deal found 6/30$1,093
This Delta deal was found by Cheapflights users on 6/30. 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.
Wed 10/2110:00 am
ATL
-
SOU
2 stops17h 35m
Delta
Mon 11/28:40 am
SOU
-
ATL
2 stops17h 56m
Delta
Deal found 6/30$1,094
This Delta deal was found by Cheapflights users on 6/28. 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 8/1111:00 am
ATL
-
SOU
2 stops16h 45m
Delta
Tue 8/189:15 am
SOU
-
ATL
2 stops18h 05m
Delta
Deal found 6/28$1,120
This Delta deal was found by Cheapflights users on 6/30. 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.
Thu 9/103:35 pm
ATL
-
SOU
1 stop12h 00m
Delta
Thu 9/249:05 am
SOU
-
ATL
1 stop12h 55m
Delta
Deal found 6/30$1,139
This Delta deal was found by Cheapflights users on 6/29. 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.
Thu 8/137:30 pm
ATL
-
SOU
2 stops17h 05m
Delta
Thu 8/209:15 am
SOU
-
ATL
1 stop12h 43m
Delta
Deal found 6/29$1,143

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 July 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,028
(KLM)

One-way from

$276
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,158
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
One-way flight from Atlanta Hartsfield-Jackson to Portsmouth
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($366 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 1, 2026.
Use the filters below to find and compare flights from Atlanta to Portsmouth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Tue 8/11

3:40 pm-8:45 am

1 stop12h 05m

Southampton Eastleigh

Tue 8/18

6:05 pm-8:25 pm

1 stop31h 20m

$1,089

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Wed 9/16

10:40 pm-4:50 pm

1 stop13h 10m

Southampton Eastleigh

Mon 9/21

5:20 pm-12:36 pm

1 stop24h 16m

$1,089

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Mon 9/14

12:28 pm-8:35 am

2 stops15h 07m

Southampton Eastleigh

Tue 9/22

9:05 am-5:00 pm

1 stop12h 55m

$1,093

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Tue 8/11

11:00 am-8:45 am

2 stops16h 45m

Southampton Eastleigh

Tue 8/18

9:15 am-10:20 pm

2 stops18h 05m

$1,120

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Thu 8/13

5:10 pm-8:45 am

1 stop10h 35m

Southampton Eastleigh

Thu 8/20

9:15 am-1:55 pm

1 stop33h 40m

$1,139

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Wed 9/16

3:35 pm-8:35 am

1 stop12h 00m

Southampton Eastleigh

Sun 9/20

9:15 am-5:00 pm

1 stop12h 45m

$1,139

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Fri 9/11

5:05 pm-8:45 am

1 stop10h 40m

Southampton Eastleigh

Mon 9/21

5:20 pm-12:36 pm

1 stop24h 16m

$1,139

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Thu 8/13

7:30 pm-5:35 pm

2 stops17h 05m

Southampton Eastleigh

Thu 8/20

9:15 am-4:58 pm

1 stop12h 43m

$1,143
Quickest round-trip

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Wed 7/29

5:05 pm-8:45 am

1 stop10h 40m

Southampton Eastleigh

Fri 8/7

9:15 am-4:58 pm

1 stop12h 43m

$1,171
Cheapest one-way

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Mon 7/27

8:30 pm-8:35 am

3 stops55h 05m

$276

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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 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 July 1, 2026.

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

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 July 1, 2026.

The most flights from ATL to P0R are scheduled on a Monday (24 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

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. 14 airlines have flights to Portsmouth from Atlanta Hartsfield-Jackson on a regular basis.

  • How long is the flight from Atlanta to Portsmouth?

    KLM and Delta can get you from Atlanta to Portsmouth in just under 12h 05m. Your travel time can differ by up to 1h 05m. Atlanta and Portsmouth are separated by a distance of 4172 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 Air France (84%), KLM (84%) or Delta (84%) 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 $3,050, our data indicates the cheapest price to be $339. The most popular route (Atlanta Hartsfield-Jackson - Southampton Eastleigh), is priced around $1,029.

  • 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.

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.

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 July 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$81Average$788FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$442Average$705FlexibilityNo cancel feeOn-time77%
FinnairCheapest$484Average$926FlexibilityNo cancel feeOn-time76%
DeltaCheapest$486Average$998FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$506Average$768FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$507Average$795FlexibilityNo cancel feeOn-time70%
IberiaCheapest$515Average$763FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$560Average$1,044FlexibilityNo cancel feeOn-time72%
Air FranceCheapest$562Average$997FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$565Average$802FlexibilityNo cancel feeOn-time71%

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.