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Portsmouth

$322+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — LHR
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
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 February 5, 2026.

This Delta deal was found by Cheapflights users on 2/2. 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 stop28h 55m
Delta
Tue 11/35:30 pm
SOU
-
ATL
1 stop28h 25m
Delta
Deal found 2/2$818
This Mytrip deal was found by Cheapflights users on 2/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:00 am
ATL
-
SOU
3 stops28h 35m
Multiple Airlines
Mon 3/97:55 pm
SOU
-
ATL
3 stops28h 36m
Multiple Airlines
Deal found 2/2$851
This KLM deal was found by Cheapflights users on 2/2. 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.
Mon 3/28:10 pm
ATL
-
SOU
1 stop31h 10m
KLM
Mon 3/95:40 pm
SOU
-
ATL
1 stop26h 00m
KLM
Deal found 2/2$864
This Delta deal was found by Cheapflights users on 2/2. 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 stop28h 55m
Delta
Sun 11/19:30 am
SOU
-
ATL
1 stop16h 15m
Delta
Deal found 2/2$869
This Delta deal was found by Cheapflights users on 2/2. 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 9/1210:12 am
ATL
-
SOU
2 stops17h 33m
Delta
Tue 11/35:30 pm
SOU
-
ATL
1 stop26h 15m
Delta
Deal found 2/2$873
This Delta deal was found by Cheapflights users on 2/4. 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 4/227:45 pm
ATL
-
SOU
1 stop31h 50m
Delta
Wed 5/69:05 am
SOU
-
ATL
1 stop12h 47m
Delta
Deal found 2/4$876
This Delta deal was found by Cheapflights users on 2/4. 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 4/227:00 am
ATL
-
SOU
2 stops20h 35m
Delta
Tue 5/55:20 pm
SOU
-
ATL
1 stop24h 22m
Delta
Deal found 2/4$880
This Delta deal was found by Cheapflights users on 2/4. 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 4/226:00 am
ATL
-
SOU
2 stops21h 35m
Delta
Fri 5/19:05 am
SOU
-
ATL
1 stop16h 20m
Delta
Deal found 2/4$881
This Delta deal was found by Cheapflights users on 2/4. 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 4/2510:45 pm
ATL
-
SOU
2 stops28h 50m
Delta
Tue 5/55:20 pm
SOU
-
ATL
1 stop24h 22m
Delta
Deal found 2/4$892
This Delta deal was found by Cheapflights users on 2/2. 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 stop28h 55m
Delta
Wed 10/285:30 pm
SOU
-
ATL
1 stop26h 15m
Delta
Deal found 2/2$893

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 February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$851
(Mytrip)

One-way from

$322
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$734
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 ($286 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($89 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 5, 2026.
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

Mon 3/2

6:00 am-3:35 pm

3 stops28h 35m

Southampton Eastleigh

Mon 3/9

7:55 pm-8:31 pm

3 stops28h 36m

$851

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Mon 3/2

8:10 pm-8:20 am

1 stop31h 10m

Southampton Eastleigh

Mon 3/9

5:40 pm-3:40 pm

1 stop26h 00m

$864

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Wed 4/22

7:45 pm-8:35 am

1 stop31h 50m

Southampton Eastleigh

Mon 5/4

5:20 pm-4:55 pm

1 stop28h 35m

$876

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Mon 4/27

5:05 pm-4:50 pm

1 stop18h 45m

Southampton Eastleigh

Mon 5/4

5:20 pm-12:42 pm

1 stop24h 22m

$876

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Wed 4/22

7:45 pm-8:35 am

1 stop31h 50m

Southampton Eastleigh

Thu 5/7

5:20 pm-12:42 pm

1 stop24h 22m

$876

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Mon 4/27

7:45 pm-4:50 pm

1 stop16h 05m

Southampton Eastleigh

Tue 5/5

5:20 pm-12:42 pm

1 stop24h 22m

$876

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Sun 4/26

3:25 pm-8:35 am

1 stop12h 10m

Southampton Eastleigh

Thu 5/7

5:20 pm-12:42 pm

1 stop24h 22m

$876

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Sun 4/26

3:25 pm-8:35 am

1 stop12h 10m

Southampton Eastleigh

Wed 5/6

9:05 am-4:52 pm

1 stop12h 47m

$876

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Wed 4/22

7:25 am-8:35 am

2 stops20h 10m

Southampton Eastleigh

Wed 5/6

5:20 pm-12:42 pm

1 stop24h 22m

$880

AtlantaSouthampton

ATL - SOU

ATLSOU

Atlanta Hartsfield-Jackson

Sun 3/15

9:00 am-8:50 am

3 stops43h 50m

$322

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 16 results
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 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 $835). 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 February 5, 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 February 5, 2026.

The most flights from ATL to P0R are scheduled on a Tuesday (24 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (19 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 February 5, 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
8,146 reviews

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

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
8,146 reviews
Delta
7.9
Good
8,146 reviews

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

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. 13 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 31h 10m. Your travel time can differ by up to 40m. 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 (78%), Aer Lingus (78%) or Finnair (78%) 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 $2,231, our data indicates the cheapest price to be $251. The most popular route (Atlanta Hartsfield-Jackson - Southampton Eastleigh), is priced around $912.

  • 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 $835). 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.

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Alternative routes for Atlanta to Portsmouth

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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 February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$746FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$427Average$599FlexibilityNo cancel feeOn-time77%
DeltaCheapest$486Average$1,111FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$514Average$787FlexibilityNo cancel feeOn-time70%
IberiaCheapest$564Average$833FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$573Average$918FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$573Average$810FlexibilityNo cancel feeOn-time71%
FinnairCheapest$581Average$823FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$588Average$969FlexibilityNo cancel feeOn-time72%
LufthansaCheapest$594Average$971FlexibilityNo cancel feeOn-time76%

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