$385+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — LHR
Sep 22 — Sep 291
Round-trip
1 adult, Economy
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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
Best
Last-minute
One-way
Cheapest flights from Atlanta to PortsmouthExplore 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 August 23, 2026.
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 August 23, 2026.
This Delta deal was found by Cheapflights users on 8/20. 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 11/1810:45 pm -
1 stop13h 15m
Mon 11/305:30 pm -
1 stop25h 05m
Deal found 8/20![Delta logo]()
$1,050
This Delta deal was found by Cheapflights users on 8/18. 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 10/2110:40 pm -
1 stop13h 10m
Fri 10/308:40 am -
1 stop17h 05m
Deal found 8/18![Delta logo]()
$1,092
This Delta deal was found by Cheapflights users on 8/19. 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 9/168:05 am -
2 stops19h 30m
Wed 9/239:15 am -
2 stops17h 45m
Deal found 8/19![Delta logo]()
$1,107
This Delta deal was found by Cheapflights users on 8/18. 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 10/213:40 pm -
1 stop11h 55m
Mon 11/28:40 am -
1 stop17h 05m
Deal found 8/18![Delta logo]()
$1,142
Best flights from Atlanta to PortsmouthDiscover 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 August 23, 2026.
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 August 23, 2026.
This Delta deal was found by Cheapflights users on 8/19. 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 10/2110:40 pm -
1 stop13h 10m
Fri 10/308:40 am -
1 stop17h 05m
Deal found 8/19![Delta logo]()
$1,093
This Delta deal was found by Cheapflights users on 8/19. 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 9/168:30 am -
2 stops19h 05m
Wed 9/239:15 am -
1 stop16h 10m
Deal found 8/19![Delta logo]()
$1,097
This Delta deal was found by Cheapflights users on 8/20. 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 10/213:40 pm -
1 stop11h 55m
Mon 11/28:40 am -
1 stop17h 05m
Deal found 8/20![Delta logo]()
$1,142
Last-minute flights from Atlanta to PortsmouthDiscover last-minute flight deals from Atlanta to Portsmouth. Data last updated August 23, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Portsmouth. Data last updated August 23, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/19. 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 9/168:30 am -
2 stops19h 05m
Wed 9/239:15 am -
1 stop16h 10m
Deal found 8/19![Delta logo]()
$1,097
This Virgin Atlantic deal was found by Cheapflights users on 8/19. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:40 pm -
1 stop13h 10m
Wed 9/239:15 am -
1 stop16h 10m
Deal found 8/19![Virgin Atlantic logo]()
$1,264
One-way flights from Atlanta to PortsmouthSearch for one-way flight options from Atlanta to Portsmouth. Find affordable one-way fares based on user searches. Data last updated August 23, 2026.
Search for one-way flight options from Atlanta to Portsmouth. Find affordable one-way fares based on user searches. Data last updated August 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:20 pm -
3 stops55h 20m
Deal found 8/22![Multiple Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 8/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:05 pm -
2 stops56h 35m
Deal found 8/22![Multiple Airlines logo]()
$445
This Kiwi.com deal was found by Cheapflights users on 8/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:15 am -
2 stops42h 50m
Deal found 8/22![Multiple Airlines logo]()
$466
This Kiwi.com deal was found by Cheapflights users on 8/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:20 pm -
3 stops39h 30m
Deal found 8/22![Multiple Airlines logo]()
$478
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:05 am -
3 stops20h 10m
Deal found 8/20![Multiple Airlines logo]()
$494
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:25 pm -
3 stops20h 25m
Deal found 8/20![Multiple Airlines logo]()
$510
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 August 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,050 (Delta) |
One-way from | $385 (Kiwi.com) |
Popular in | June |
Cheapest in | November |
Average price | $981 |
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 7,457,451 searches. Data last updated August 23, 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
Cheapest round-trip
AtlantaSouthampton
ATL Atlanta Hartsfield-Jackson - SOU Southampton Eastleigh
ATLSOU
Atlanta Hartsfield-Jackson
Wed 10/21
10:40 pm-4:50 pm
1 stop13h 10m
Southampton Eastleigh
Fri 10/30
8:40 am-9:45 pm
1 stop17h 05m
$1,093
AtlantaSouthampton
ATL Atlanta Hartsfield-Jackson - SOU Southampton Eastleigh
ATLSOU
Atlanta Hartsfield-Jackson
Wed 9/16
8:30 am-8:35 am
2 stops19h 05m
Southampton Eastleigh
Wed 9/23
9:15 am-8:25 pm
1 stop16h 10m
$1,097
Quickest round-trip
AtlantaSouthampton
ATL Atlanta Hartsfield-Jackson - SOU Southampton Eastleigh
ATLSOU
Atlanta Hartsfield-Jackson
Wed 10/21
3:40 pm-8:35 am
1 stop11h 55m
Southampton Eastleigh
Mon 11/2
8:40 am-8:45 pm
1 stop17h 05m
$1,142
Cheapest one-way
AtlantaSouthampton
ATL Atlanta Hartsfield-Jackson - SOU Southampton Eastleigh
ATLSOU
Atlanta Hartsfield-Jackson
Sat 9/12
8:15 am-8:40 am
2 stops43h 25m
$454
AtlantaSouthampton
ATL Atlanta Hartsfield-Jackson - SOU Southampton Eastleigh
ATLSOU
Atlanta Hartsfield-Jackson
Mon 9/7
3:55 pm-7:30 pm
3 stops22h 35m
$602
AtlantaSouthampton
ATL Atlanta Hartsfield-Jackson - SOU Southampton Eastleigh
ATLSOU
Atlanta Hartsfield-Jackson
Tue 9/8
10:40 pm-4:50 pm
1 stop13h 10m
$663
Quickest one-way
AtlantaSouthampton
ATL Atlanta Hartsfield-Jackson - SOU Southampton Eastleigh
ATLSOU
Atlanta Hartsfield-Jackson
Sun 9/6
3:35 pm-8:35 am
1 stop12h 00m
$663
AtlantaSouthampton
ATL Atlanta Hartsfield-Jackson - SOU Southampton Eastleigh
ATLSOU
Atlanta Hartsfield-Jackson
Thu 9/10
3:35 pm-8:35 am
1 stop12h 00m
$713
AtlantaSouthampton
ATL Atlanta Hartsfield-Jackson - SOU Southampton Eastleigh
ATLSOU
Atlanta Hartsfield-Jackson
Sat 9/12
7:50 pm-4:50 pm
1 stop16h 00m
$713
AtlantaSouthampton
ATL Atlanta Hartsfield-Jackson - SOU Southampton Eastleigh
ATLSOU
Atlanta Hartsfield-Jackson
Fri 9/11
7:55 pm-4:50 pm
1 stop15h 55m
$713
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.
ATL-SOU
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
ATL-P0R
ATL-SOU
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 August 23, 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 August 23, 2026.
The most flights from ATL to P0R are scheduled on a Monday (28 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (26 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.
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Alternative routes for Atlanta to Portsmouth
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portsmouth by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Atlanta to Portsmouth by cabin class
Find flights from Atlanta to Portsmouth, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Atlanta and Portsmouth flights
Browse other Atlanta and Portsmouth flight options. Last updated on August 23, 2026.
Other flights from Atlanta
Browse through other flights departing from Atlanta. Flights are based on user searches made on Cheapflights and were last updated on August 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Atlanta to Portsmouth flights
Consider these flights traveling from Atlanta to Portsmouth.
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 7,457,451 searches. Data last updated August 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$329 | Average$905 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$437 | Average$1,142 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$458 | Average$741 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$484 | Average$926 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$503 | Average$797 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$506 | Average$768 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$524 | Average$962 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$544 | Average$1,075 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$594 | Average$964 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$630 | Average$975 | FlexibilityNo cancel fee | On-time71% |