$279+ Cheap flights from the United States 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Sep 25 — Oct 21
Round-trip
1 adult, Economy
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Find cheap flights from USA 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
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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 USA to Portsmouth
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Cheapest flights from USA to PortsmouthExplore the most affordable flight options available from USA to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 2026.
Explore the most affordable flight options available from USA to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/25. 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.
Sun 10/1812:30 am -
2 stops31h 20m
Mon 11/27:25 pm -
1 stop31h 35m
Deal found 8/25![Multiple Airlines logo]()
$676
This Mytrip deal was found by Cheapflights users on 8/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/185:10 pm -
2 stops21h 20m
Tue 11/39:20 am -
2 stops35h 25m
Deal found 8/23![Multiple Airlines logo]()
$728
This Mytrip deal was found by Cheapflights users on 8/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/185:45 pm -
2 stops20h 45m
Tue 11/39:20 am -
2 stops35h 20m
Deal found 8/23![Multiple Airlines logo]()
$728
This Mytrip deal was found by Cheapflights users on 8/25. 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 10/195:20 pm -
2 stops21h 10m
Mon 11/29:20 am -
2 stops35h 20m
Deal found 8/25![Multiple Airlines logo]()
$765
This Mytrip deal was found by Cheapflights users on 8/24. 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.
Tue 10/610:50 am -
2 stops27h 40m
Tue 10/138:00 pm -
2 stops31h 40m
Deal found 8/24![Multiple Airlines logo]()
$808
This Mytrip deal was found by Cheapflights users on 8/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:30 pm -
2 stops18h 00m
Tue 10/209:15 am -
2 stops15h 05m
Deal found 8/23![Multiple Airlines logo]()
$814
This Mytrip deal was found by Cheapflights users on 8/21. 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.
Tue 10/68:25 pm -
2 stops18h 05m
Tue 10/209:15 am -
2 stops15h 00m
Deal found 8/21![Multiple Airlines logo]()
$830
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 10/55:35 pm -
1 stop10h 05m
Mon 10/125:20 pm -
2 stops34h 05m
Deal found 8/22![Aer Lingus logo]()
$836
This flugladen.de 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:55 pm -
2 stops19h 35m
Tue 10/139:15 am -
2 stops36h 45m
Deal found 8/22![Multiple Airlines logo]()
$843
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Sun 10/48:30 pm -
2 stops31h 10m
Sun 10/119:20 am -
1 stop13h 55m
Deal found 8/21![Multiple Airlines logo]()
$850
This Mytrip deal was found by Cheapflights users on 8/25. 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.
Fri 10/912:30 pm -
2 stops26h 00m
Fri 10/168:00 pm -
2 stops25h 05m
Deal found 8/25![Multiple Airlines logo]()
$853
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.
Tue 10/69:35 pm -
1 stop12h 25m
Tue 10/138:00 pm -
2 stops52h 20m
Deal found 8/22![Multiple Airlines logo]()
$856
Best flights from USA to PortsmouthDiscover carefully curated flight deals from USA to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 26, 2026.
Discover carefully curated flight deals from USA to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 26, 2026.
This Mytrip deal was found by Cheapflights users on 8/25. 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.
Fri 10/912:30 pm -
2 stops26h 00m
Fri 10/168:00 pm -
2 stops25h 05m
Deal found 8/25![Multiple Airlines logo]()
$853
This Expedia deal was found by Cheapflights users on 8/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:25 pm -
1 stop9h 40m
Tue 10/139:15 am -
1 stop10h 40m
Deal found 8/24![Aer Lingus logo]()
$873
This Delta deal was found by Cheapflights users on 8/21. 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 1/317:20 pm -
1 stop16h 40m
Tue 2/95:30 pm -
2 stops27h 31m
Deal found 8/21![Delta logo]()
$1,019
This KLM deal was found by Cheapflights users on 8/24. 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.
Sun 2/710:40 am -
2 stops15h 30m
Fri 2/198:40 am -
2 stops18h 53m
Deal found 8/24![KLM logo]()
$1,035
This Trip.com deal was found by Cheapflights users on 8/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/185:10 pm -
2 stops18h 40m
Tue 11/39:20 am -
2 stops35h 25m
Deal found 8/23![Multiple Airlines logo]()
$858
This Mytrip deal was found by Cheapflights users on 8/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:45 pm -
1 stop10h 55m
Wed 10/149:20 am -
1 stop15h 55m
Deal found 8/23![Aer Lingus logo]()
$947
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 10/65:25 pm -
2 stops11h 50m
Tue 10/139:15 am -
1 stop10h 40m
Deal found 8/24![Multiple Airlines logo]()
$866
This Delta deal was found by Cheapflights users on 8/21. 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 1/267:20 pm -
1 stop16h 40m
Wed 2/105:30 pm -
2 stops31h 20m
Deal found 8/21![Delta logo]()
$1,019
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/205:35 pm -
1 stop10h 05m
Sun 9/279:20 am -
1 stop11h 45m
Deal found 8/22![Aer Lingus logo]()
$960
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/611:19 am -
2 stops15h 26m
Tue 10/139:05 am -
1 stop11h 10m
Deal found 8/22![KLM logo]()
$1,069
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:25 pm -
2 stops18h 05m
Tue 10/139:15 am -
2 stops15h 00m
Deal found 8/22![Multiple Airlines logo]()
$913
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2012:20 pm -
2 stops36h 15m
Mon 9/285:20 pm -
2 stops38h 31m
Deal found 8/22![Delta logo]()
$1,029
This KLM deal was found by Cheapflights users on 8/23. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/711:19 am -
2 stops15h 16m
Wed 10/149:15 am -
2 stops18h 16m
Deal found 8/23![KLM logo]()
$1,072
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 11/267:55 pm -
1 stop15h 40m
Sat 12/59:20 am -
1 stop13h 50m
Deal found 8/25![Aer Lingus logo]()
$986
This Delta deal was found by Cheapflights users on 8/21. 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 12/27:15 pm -
1 stop16h 45m
Sun 12/135:30 pm -
1 stop28h 35m
Deal found 8/21![Delta logo]()
$1,050
This KLM deal was found by Cheapflights users on 8/24. 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 10/711:33 am -
2 stops16h 02m
Wed 10/149:15 am -
2 stops19h 02m
Deal found 8/24![KLM logo]()
$1,074
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/75:35 pm -
1 stop10h 05m
Thu 9/109:20 am -
2 stops32h 55m
Deal found 8/24![Multiple Airlines logo]()
$991
This Delta deal was found by Cheapflights users on 8/21. 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 12/111:15 am -
2 stops24h 45m
Sun 12/135:30 pm -
1 stop28h 35m
Deal found 8/21![Delta logo]()
$1,054
This KLM deal was found by Cheapflights users on 8/25. 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 9/2211:23 am -
2 stops16h 22m
Tue 9/299:05 am -
2 stops20h 17m
Deal found 8/25![KLM logo]()
$1,074
This Mytrip deal was found by Cheapflights users on 8/25. 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.
Thu 11/265:40 pm -
2 stops20h 50m
Sat 12/57:55 pm -
2 stops26h 20m
Deal found 8/25![Multiple Airlines logo]()
$1,016
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/61:00 pm -
2 stops14h 05m
Sun 10/189:20 am -
1 stop10h 35m
Deal found 8/22![Aer Lingus logo]()
$1,126
This Delta deal was found by Cheapflights users on 8/24. 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 1/3110:05 am -
2 stops16h 05m
Fri 2/58:40 am -
2 stops19h 03m
Deal found 8/24![Delta logo]()
$1,058
This KLM deal was found by Cheapflights users on 8/21. 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.
Thu 10/14:55 pm -
1 stop18h 55m
Mon 10/55:20 pm -
1 stop26h 25m
Deal found 8/21![KLM logo]()
$1,109
This Mytrip deal was found by Cheapflights users on 8/24. 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.
Fri 1/295:40 pm -
1 stop10h 00m
Fri 2/53:00 pm -
3 stops29h 40m
Deal found 8/24![Multiple Airlines logo]()
$1,018
This Delta deal was found by Cheapflights users on 8/24. 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.
Mon 2/15:35 pm -
2 stops17h 25m
Fri 2/58:40 am -
2 stops19h 03m
Deal found 8/24![Delta logo]()
$1,058
This Cheapflightsfares deal was found by Cheapflights users on 8/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:15 pm -
1 stop10h 25m
Tue 9/159:15 am -
1 stop11h 30m
Deal found 8/26![Aer Lingus logo]()
$1,178
This KLM deal was found by Cheapflights users on 8/24. 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 10/712:45 pm -
2 stops14h 50m
Sun 10/255:30 pm -
1 stop28h 35m
Deal found 8/24![KLM logo]()
$1,114
This Mytrip deal was found by Cheapflights users on 8/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/74:55 pm -
2 stops21h 35m
Wed 10/148:00 pm -
2 stops29h 20m
Deal found 8/23![Multiple Airlines logo]()
$1,065
This Delta deal was found by Cheapflights users on 8/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/194:50 pm -
1 stop18h 00m
Tue 11/175:20 pm -
1 stop27h 05m
Deal found 8/26![Delta logo]()
$1,066
This KAYAK deal was found by Cheapflights users on 8/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:35 pm -
1 stop10h 05m
Wed 10/289:20 am -
1 stop11h 50m
Deal found 8/23![Aer Lingus logo]()
$1,208
Last-minute flights from USA to PortsmouthDiscover last-minute flight deals from USA to Portsmouth. Data last updated August 26, 2026 and is based on user searches.
Discover last-minute flight deals from USA to Portsmouth. Data last updated August 26, 2026 and is based on user searches.
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 9/59:05 pm -
1 stop30h 35m
Fri 9/188:00 pm -
2 stops24h 55m
Deal found 8/22![Multiple Airlines logo]()
$995
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:35 pm -
1 stop10h 05m
Wed 9/99:20 am -
1 stop11h 45m
Deal found 8/22![Aer Lingus logo]()
$894
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:35 pm -
1 stop10h 05m
Wed 9/98:00 pm -
2 stops46h 15m
Deal found 8/23![Multiple Airlines logo]()
$960
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/75:35 pm -
1 stop10h 05m
Thu 9/109:20 am -
1 stop11h 45m
Deal found 8/24![Aer Lingus logo]()
$976
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/75:35 pm -
1 stop10h 05m
Thu 9/109:20 am -
2 stops32h 55m
Deal found 8/24![Multiple Airlines logo]()
$991
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 9/85:35 pm -
1 stop18h 15m
Fri 9/119:20 am -
1 stop11h 45m
Deal found 8/25![Aer Lingus logo]()
$999
This Mytrip deal was found by Cheapflights users on 8/25. 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.
Wed 9/96:00 am -
2 stops29h 50m
Sat 9/128:00 pm -
2 stops24h 53m
Deal found 8/25![Multiple Airlines logo]()
$1,002
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/204:55 pm -
1 stop21h 35m
Sun 9/279:20 am -
1 stop18h 05m
Deal found 8/22![Aer Lingus logo]()
$928
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.
Sun 9/206:20 pm -
2 stops33h 20m
Sun 9/279:20 am -
1 stop15h 00m
Deal found 8/22![Multiple Airlines logo]()
$968
This Mytrip deal was found by Cheapflights users on 8/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:05 am -
2 stops26h 25m
Mon 9/288:00 pm -
2 stops24h 52m
Deal found 8/23![Multiple Airlines logo]()
$1,005
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 9/227:59 pm -
1 stop15h 51m
Tue 9/296:10 pm -
2 stops53h 15m
Deal found 8/25![Multiple Airlines logo]()
$901
This Delta deal was found by Cheapflights users on 8/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:10 pm -
2 stops20h 40m
Tue 10/205:20 pm -
1 stop29h 25m
Deal found 8/26![Delta logo]()
$1,070
One-way flights from USA to PortsmouthSearch for one-way flight options from USA to Portsmouth. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.
Search for one-way flight options from USA to Portsmouth. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 10/96:20 pm -
2 stops32h 35m
Deal found 8/24![Multiple Airlines logo]()
$279
This Connections by easyJet deal was found by Cheapflights users on 8/24. 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 Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/911:00 pm -
1 stop14h 55m
Deal found 8/24![Multiple Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/2912:30 am -
2 stops27h 05m
Deal found 8/24![Multiple Airlines logo]()
$328
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.
Sun 2/147:05 pm -
2 stops35h 40m
Deal found 8/22![Multiple Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/1510:05 pm -
2 stops29h 40m
Deal found 8/24![Multiple Airlines logo]()
$364
This Mytrip deal was found by Cheapflights users on 8/24. 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.
Wed 9/305:35 pm -
2 stops12h 30m
Deal found 8/24![Multiple Airlines logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/159:05 pm -
1 stop14h 45m
Deal found 8/24![Aer Lingus logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/155:35 pm -
1 stop9h 30m
Deal found 8/24![Aer Lingus logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 9/173:50 pm -
3 stops58h 05m
Deal found 8/25![Multiple Airlines logo]()
$402
This Mytrip deal was found by Cheapflights users on 8/24. 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.
Tue 9/153:45 pm -
2 stops18h 15m
Deal found 8/24![Multiple Airlines logo]()
$408
This Delta deal was found by Cheapflights users on 8/24. 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.
Mon 1/410:05 am -
2 stops24h 55m
Deal found 8/24![Delta logo]()
$426
This Delta deal was found by Cheapflights users on 8/24. 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 1/105:35 pm -
2 stops32h 35m
Deal found 8/24![Delta logo]()
$438
Find flight deals from USA to Portsmouth
Keep the following information in mind while searching for USA to Portsmouth flight deals. Data was last updated August 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $676 (Kiwi.com) |
One-way from | $279 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $748 |
Cheapflights Fare Finder
Customize your flight search to find flights from USA 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 26, 2026.
Use the filters below to find and compare flights from the United States to Portsmouth that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonSouthampton
BOS Boston Logan Intl - SOU Southampton Eastleigh
BOSSOU
Boston Logan Intl
Fri 10/9
12:30 pm-7:30 pm
2 stops26h 00m
Southampton Eastleigh
Fri 10/16
8:00 pm-4:05 pm
2 stops25h 05m
$853
New YorkSouthampton
JFK New York John F Kennedy Intl - SOU Southampton Eastleigh
JFKSOU
New York John F Kennedy Intl
Sun 10/18
5:10 pm-4:50 pm
2 stops18h 40m
Southampton Eastleigh
Tue 11/3
9:20 am-3:45 pm
2 stops35h 25m
$858
BostonSouthampton
BOS Boston Logan Intl - SOU Southampton Eastleigh
BOSSOU
Boston Logan Intl
Tue 10/6
5:25 pm-10:15 am
2 stops11h 50m
Southampton Eastleigh
Tue 10/13
9:15 am-2:55 pm
1 stop10h 40m
$866
Quickest round-trip
BostonSouthampton
BOS Boston Logan Intl - SOU Southampton Eastleigh
BOSSOU
Boston Logan Intl
Tue 10/6
5:25 pm-8:05 am
1 stop9h 40m
Southampton Eastleigh
Tue 10/13
9:15 am-2:55 pm
1 stop10h 40m
$873
ChicagoSouthampton
ORD Chicago O'Hare Intl - SOU Southampton Eastleigh
ORDSOU
Chicago O'Hare Intl
Tue 10/6
7:25 pm-7:30 pm
2 stops18h 05m
Southampton Eastleigh
Tue 10/13
9:15 am-6:15 pm
2 stops15h 00m
$913
ChicagoSouthampton
ORD Chicago O'Hare Intl - SOU Southampton Eastleigh
ORDSOU
Chicago O'Hare Intl
Wed 10/7
3:45 pm-8:40 am
1 stop10h 55m
Southampton Eastleigh
Wed 10/14
9:20 am-7:15 pm
1 stop15h 55m
$947
NewarkSouthampton
EWR Newark - SOU Southampton Eastleigh
EWRSOU
Newark
Sun 9/20
5:35 pm-8:40 am
1 stop10h 05m
Southampton Eastleigh
Sun 9/27
9:20 am-4:05 pm
1 stop11h 45m
$960
OrlandoSouthampton
MCO Orlando - SOU Southampton Eastleigh
MCOSOU
Orlando
Thu 11/26
7:55 pm-4:35 pm
1 stop15h 40m
Southampton Eastleigh
Sat 12/5
9:20 am-6:10 pm
1 stop13h 50m
$986
NewarkSouthampton
EWR Newark - SOU Southampton Eastleigh
EWRSOU
Newark
Mon 9/7
5:35 pm-8:40 am
1 stop10h 05m
Southampton Eastleigh
Thu 9/10
9:20 am-1:15 pm
2 stops32h 55m
$991
OrlandoSouthampton
MCO Orlando - SOU Southampton Eastleigh
MCOSOU
Orlando
Thu 11/26
5:40 pm-7:30 pm
2 stops20h 50m
Southampton Eastleigh
Sat 12/5
7:55 pm-5:15 pm
2 stops26h 20m
$1,016
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from USA to Portsmouth
Have a flexible travel schedule? Discover the best time to fly to Portsmouth from USA with our price prediction graph.
JFK-SOU
EWR-SOU
BOS-SOU
MCO-SOU
MIA-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 the United States to Portsmouth
US0-P0R
JFK-SOU
EWR-SOU
BOS-SOU
MCO-SOU
What is the cheapest time of day to fly from US to P0R?
Find hourly flight availability from USA 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 26, 2026.
It’s typically best to fly out from USA to Portsmouth in the morning. Doing so could potentially save you 7% on the flight price compared to flying at noon, which is usually more expensive.
Weekly flight availability from USA to Portsmouth
Explore weekly flight availability from USA 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 26, 2026.
The most flights from US0 to P0R are scheduled on a Monday (57 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (52 on average).
What is the cheapest day to fly from USA to Portsmouth?
Use this chart to determine the cheapest time to fly round-trip from USA to Portsmouth. Price data was last updated on August 22, 2026.
Travelers seeking maximum savings on their USA to Portsmouth flight should consider departing on Thursday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 August 26, 2026.
See what other customers who have flown with KLM,Delta, andAer Lingus from the United States 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.
Food
7.3
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Boarding
7.8
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Food
7.3
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Boarding
7.8
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Food
7.3
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Boarding
7.8
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Food
7.3
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Boarding
7.8
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Related info for your journey
Find useful and relevant information for your journey from USA 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 USA to Portsmouth
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Complete your trip
Complete your trip to Portsmouth by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from USA to Portsmouth by cabin class
Find flights from USA to Portsmouth, based on your preferred cabin class, be it economy, premium economy, business, or first class.
USA and Portsmouth flights
Browse other USA and Portsmouth flight options. Last updated on August 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
USA to Portsmouth flights
Consider these flights traveling from USA to Portsmouth.
Top 10 airlines flying from USA to Portsmouth
Discover the top 10 airlines that operate flights from USA 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 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$263 | Average$618 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$280 | Average$280 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$291 | Average$1,031 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$329 | Average$929 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$352 | Average$892 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$355 | Average$627 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$396 | Average$573 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$430 | Average$871 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$432 | Average$903 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$438 | Average$662 | FlexibilityNo cancel fee | On-time75% |