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Portsmouth

$483+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — LHR
Apr 27 — May 41
Mon 4/27
Mon 5/4
1 adult, Economy
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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 March 28, 2026.

This Delta deal was found by Cheapflights users on 3/23. 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 9/63:35 pm
ATL
-
SOU
1 stop12h 00m
Delta
Tue 9/159:05 am
SOU
-
ATL
1 stop12h 55m
Delta
Deal found 3/23$982
This Delta deal was found by Cheapflights users on 3/23. 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.
Sat 9/510:40 pm
ATL
-
SOU
1 stop28h 55m
Delta
Tue 9/159:05 am
SOU
-
ATL
1 stop12h 55m
Delta
Deal found 3/23$1,032
This KLM deal was found by Cheapflights users on 3/27. 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.
Wed 10/2110:40 pm
ATL
-
SOU
1 stop13h 10m
KLM
Mon 11/25:30 pm
SOU
-
ATL
1 stop28h 25m
KLM
Deal found 3/27$1,033
This KLM deal was found by Cheapflights users on 3/27. 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.
Tue 10/2010:40 pm
ATL
-
SOU
1 stop13h 10m
KLM
Fri 10/308:40 am
SOU
-
ATL
1 stop17h 05m
KLM
Deal found 3/27$1,034
This Delta deal was found by Cheapflights users on 3/23. 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 9/912:15 pm
ATL
-
SOU
2 stops15h 20m
Delta
Sun 9/135:20 pm
SOU
-
ATL
1 stop24h 16m
Delta
Deal found 3/23$1,036
This Delta deal was found by Cheapflights users on 3/23. 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 9/63:35 pm
ATL
-
SOU
1 stop12h 00m
Delta
Sat 9/129:15 am
SOU
-
ATL
2 stops28h 24m
Delta
Deal found 3/23$1,043
This Delta deal was found by Cheapflights users on 3/23. 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 9/912:15 pm
ATL
-
SOU
2 stops15h 20m
Delta
Sat 9/129:15 am
SOU
-
ATL
2 stops28h 24m
Delta
Deal found 3/23$1,047
This Delta deal was found by Cheapflights users on 3/23. 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 9/310:25 pm
ATL
-
SOU
2 stops29h 20m
Delta
Tue 9/85:20 pm
SOU
-
ATL
1 stop32h 05m
Delta
Deal found 3/23$1,079

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 March 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$982
(Delta)

One-way from

$483
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$807
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. 17% potential increase in price ($172 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 28, 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
Quickest round-trip

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Fri 5/8

11:10 am-8:45 am

2 stops16h 35m

Southampton Eastleigh

Fri 5/15

9:05 am-4:55 pm

1 stop12h 50m

$1,168

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Wed 5/27

7:45 pm-4:50 pm

1 stop16h 05m

Southampton Eastleigh

Mon 6/8

9:05 am-1:49 pm

1 stop33h 44m

$1,169

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Sat 5/9

11:35 am-8:45 am

2 stops16h 10m

Southampton Eastleigh

Sat 5/16

5:20 pm-12:42 pm

1 stop24h 22m

$1,197

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Wed 5/27

2:56 pm-8:35 am

2 stops12h 39m

Southampton Eastleigh

Mon 6/8

9:05 am-11:47 pm

2 stops19h 42m

$1,244
Cheapest one-way
Quickest one-way

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Fri 9/4

9:18 am-6:55 pm

2 stops28h 37m

$483

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Fri 9/4

10:40 pm-8:45 am

1 stop29h 05m

$577

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Sorted by cheapest first

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 $807). 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 March 28, 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 March 28, 2026.

The most flights from ATL to P0R are scheduled on a Saturday (24 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (13 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 March 28, 2026.
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
8,356 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

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
8,356 reviews
Delta
7.9
Good
8,356 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

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

  • How long is the flight from Atlanta to Portsmouth?

    Delta, KLM, and Virgin Atlantic can get you from Atlanta to Portsmouth in just under 16h 05m. Your travel time can differ by up to 30m. 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 American Airlines (91%), Aer Lingus (91%) or Finnair (91%) 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 $2,368, our data indicates the cheapest price to be $315. The most popular route (Atlanta Hartsfield-Jackson - Southampton Eastleigh), is priced around $982.

  • 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 $807). 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 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 March 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$792FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$427Average$650FlexibilityNo cancel feeOn-time77%
DeltaCheapest$486Average$1,078FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$506Average$768FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$513Average$799FlexibilityNo cancel feeOn-time70%
IberiaCheapest$516Average$798FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$565Average$903FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$566Average$975FlexibilityNo cancel feeOn-time72%
FinnairCheapest$581Average$917FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$603Average$880FlexibilityNo cancel feeOn-time71%

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