$1,032+ Cheap flights from San Diego (SAN) to Portsmouth, England
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LHR
Jun 10 — Jun 171
Round-trip
1 adult, Economy
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Find cheap flights from San Diego 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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Best
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Cheapest flights from San Diego to PortsmouthExplore the most affordable flight options available from San Diego to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 11, 2026.
Explore the most affordable flight options available from San Diego to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 11, 2026.
This Delta deal was found by Cheapflights users on 5/7. 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 11/32:00 pm
SAN
- SOU
1 stop34h 20m
Delta
Mon 11/165:30 pm
SOU
- SAN
1 stop26h 35m
Delta
Deal found 5/7![Delta logo]()
$1,032
This Delta deal was found by Cheapflights users on 5/10. 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 9/81:40 pm
SAN
- SOU
1 stop19h 10m
Delta
Wed 9/165:20 pm
SOU
- SAN
1 stop26h 30m
Delta
Deal found 5/10![Delta logo]()
$1,033
This Delta deal was found by Cheapflights users on 5/7. 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 11/18:00 am
SAN
- SOU
2 stops40h 10m
Delta
Wed 11/185:30 pm
SOU
- SAN
1 stop26h 35m
Delta
Deal found 5/7![Delta logo]()
$1,037
This Delta deal was found by Cheapflights users on 5/10. 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
SAN
- SOU
2 stops25h 55m
Delta
Wed 9/169:05 am
SOU
- SAN
1 stop34h 45m
Delta
Deal found 5/10![Delta logo]()
$1,038
This Delta deal was found by Cheapflights users on 5/7. 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 11/32:00 pm
SAN
- SOU
1 stop34h 20m
Delta
Thu 11/128:50 am
SOU
- SAN
2 stops19h 28m
Delta
Deal found 5/7![Delta logo]()
$1,042
This Delta deal was found by Cheapflights users on 5/10. 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 9/81:40 pm
SAN
- SOU
1 stop19h 10m
Delta
Tue 9/159:05 am
SOU
- SAN
2 stops21h 39m
Delta
Deal found 5/10![Delta logo]()
$1,043
This Delta deal was found by Cheapflights users on 5/7. 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 11/19:40 pm
SAN
- SOU
2 stops26h 30m
Delta
Tue 11/178:40 am
SOU
- SAN
2 stops19h 45m
Delta
Deal found 5/7![Delta logo]()
$1,046
This Delta deal was found by Cheapflights users on 5/10. 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 9/66:20 am
SAN
- SOU
2 stops18h 15m
Delta
Tue 9/155:20 pm
SOU
- SAN
2 stops32h 40m
Delta
Deal found 5/10![Delta logo]()
$1,047
This Delta deal was found by Cheapflights users on 5/7. 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 11/52:00 pm
SAN
- SOU
1 stop19h 00m
Delta
Wed 11/185:30 pm
SOU
- SAN
1 stop26h 35m
Delta
Deal found 5/7![Delta logo]()
$1,082
This Delta deal was found by Cheapflights users on 5/10. 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 9/107:00 am
SAN
- SOU
2 stops17h 35m
Delta
Mon 9/149:05 am
SOU
- SAN
1 stop34h 45m
Delta
Deal found 5/10![Delta logo]()
$1,088
This Delta deal was found by Cheapflights users on 5/10. 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 9/81:40 pm
SAN
- SOU
1 stop19h 10m
Delta
Sun 9/135:20 pm
SOU
- SAN
2 stops30h 48m
Delta
Deal found 5/10![Delta logo]()
$1,093
This Delta deal was found by Cheapflights users on 5/7. 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.
Fri 11/611:40 am
SAN
- SOU
2 stops21h 20m
Delta
Mon 11/165:30 pm
SOU
- SAN
2 stops34h 55m
Delta
Deal found 5/7![Delta logo]()
$1,096
Best flights from San Diego to PortsmouthDiscover carefully curated flight deals from San Diego to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 11, 2026.
Discover carefully curated flight deals from San Diego to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 11, 2026.
This Delta deal was found by Cheapflights users on 5/8. 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 7/1110:15 pm
SAN
- SOU
2 stops26h 30m
Delta
Fri 7/319:15 am
SOU
- SAN
2 stops22h 15m
Delta
Deal found 5/8![Delta logo]()
$1,369
This KLM deal was found by Cheapflights users on 5/6. 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.
Sat 6/201:40 pm
SAN
- SOU
1 stop34h 55m
KLM
Sat 6/279:15 am
SOU
- SAN
2 stops21h 23m
KLM
Deal found 5/6![KLM logo]()
$1,514
This BusinessClass deal was found by Cheapflights users on 5/9. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1710:59 am
SAN
- SOU
2 stops21h 51m
Multiple Airlines
Wed 6/249:20 am
SOU
- SAN
2 stops18h 47m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,515
This Delta deal was found by Cheapflights users on 5/8. 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 7/1210:15 pm
SAN
- SOU
2 stops26h 30m
Delta
Fri 7/319:15 am
SOU
- SAN
2 stops19h 21m
Delta
Deal found 5/8![Delta logo]()
$1,369
This Delta deal was found by Cheapflights users on 5/6. 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 6/202:31 pm
SAN
- SOU
2 stops18h 19m
Delta
Sat 6/279:15 am
SOU
- SAN
2 stops22h 24m
Delta
Deal found 5/6![Delta logo]()
$1,523
This KLM deal was found by Cheapflights users on 5/7. 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 6/176:15 am
SAN
- SOU
2 stops18h 20m
KLM
Wed 6/249:05 am
SOU
- SAN
1 stop34h 45m
KLM
Deal found 5/7![KLM logo]()
$1,729
This Delta deal was found by Cheapflights users on 5/9. 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 6/171:25 pm
SAN
- SOU
2 stops19h 25m
Delta
Wed 6/245:20 pm
SOU
- SAN
1 stop26h 30m
Delta
Deal found 5/9![Delta logo]()
$1,730
This Mytrip deal was found by Cheapflights users on 5/6. 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.
Sat 6/207:00 am
SAN
- SOU
3 stops28h 30m
Multiple Airlines
Sat 6/278:00 pm
SOU
- SAN
3 stops32h 58m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$2,227
This British Airways deal was found by Cheapflights users on 5/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:40 pm
SAN
- SOU
2 stops28h 45m
British Airways
Wed 5/276:25 pm
SOU
- SAN
2 stops28h 30m
British Airways
Deal found 5/6![British Airways logo]()
$5,899
This British Airways deal was found by Cheapflights users on 5/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/284:45 pm
SAN
- SOU
2 stops18h 40m
British Airways
Mon 6/16:25 pm
SOU
- SAN
2 stops28h 30m
British Airways
Deal found 5/6![British Airways logo]()
$5,899
This British Airways deal was found by Cheapflights users on 5/8. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:40 pm
SAN
- SOU
2 stops16h 35m
British Airways
Sat 8/16:45 am
SOU
- SAN
2 stops19h 05m
British Airways
Deal found 5/8![British Airways logo]()
$5,900
Last-minute flights from San Diego to PortsmouthDiscover last-minute flight deals from San Diego to Portsmouth. Data last updated May 11, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Portsmouth. Data last updated May 11, 2026 and is based on user searches.
This British Airways deal was found by Cheapflights users on 5/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/134:45 pm
SAN
- SOU
2 stops18h 40m
British Airways
Mon 5/186:25 pm
SOU
- SAN
2 stops28h 30m
British Airways
Deal found 5/10![British Airways logo]()
$5,900
This British Airways deal was found by Cheapflights users on 5/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:40 pm
SAN
- SOU
2 stops28h 45m
British Airways
Wed 5/276:25 pm
SOU
- SAN
2 stops28h 30m
British Airways
Deal found 5/6![British Airways logo]()
$5,899
This British Airways deal was found by Cheapflights users on 5/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:40 pm
SAN
- SOU
2 stops34h 50m
British Airways
Tue 6/236:25 pm
SOU
- SAN
2 stops28h 30m
British Airways
Deal found 5/9![British Airways logo]()
$5,911
This BusinessClass deal was found by Cheapflights users on 5/7. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1710:59 am
SAN
- SOU
2 stops24h 31m
Multiple Airlines
Wed 6/249:20 am
SOU
- SAN
2 stops21h 19m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,514
This KLM deal was found by Cheapflights users on 5/7. 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 6/176:15 am
SAN
- SOU
2 stops18h 20m
KLM
Wed 6/249:05 am
SOU
- SAN
1 stop34h 45m
KLM
Deal found 5/7![KLM logo]()
$1,729
This Delta deal was found by Cheapflights users on 5/9. 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 6/171:25 pm
SAN
- SOU
2 stops19h 25m
Delta
Wed 6/245:20 pm
SOU
- SAN
1 stop26h 30m
Delta
Deal found 5/9![Delta logo]()
$1,730
Find flight deals from San Diego to Portsmouth
Keep the following information in mind while searching for San Diego to Portsmouth flight deals. Data was last updated May 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,032 (Delta) |
Popular in | June |
Cheapest in | October |
Average price | $1,047 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego 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 May 11, 2026.
Use the filters below to find and compare flights from San Diego to Portsmouth that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Sat 7/11
10:15 pm-8:45 am
2 stops26h 30m
Southampton Eastleigh
Fri 7/31
9:15 am-11:30 pm
2 stops22h 15m
$1,369
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Sun 7/12
10:15 pm-8:45 am
2 stops26h 30m
Southampton Eastleigh
Fri 7/31
9:15 am-8:36 pm
2 stops19h 21m
$1,369
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Sat 6/20
1:40 pm-8:35 am
1 stop34h 55m
Southampton Eastleigh
Sat 6/27
9:15 am-10:38 pm
2 stops21h 23m
$1,514
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Wed 6/17
10:59 am-4:50 pm
2 stops21h 51m
Southampton Eastleigh
Wed 6/24
9:20 am-8:07 pm
2 stops18h 47m
$1,515
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Sat 6/20
2:31 pm-4:50 pm
2 stops18h 19m
Southampton Eastleigh
Sat 6/27
9:15 am-11:39 pm
2 stops22h 24m
$1,523
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Wed 6/17
6:15 am-8:35 am
2 stops18h 20m
Southampton Eastleigh
Wed 6/24
9:05 am-11:50 am
1 stop34h 45m
$1,729
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Wed 6/17
1:25 pm-4:50 pm
2 stops19h 25m
Southampton Eastleigh
Wed 6/24
5:20 pm-11:50 am
1 stop26h 30m
$1,730
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Sat 6/20
7:00 am-7:30 pm
3 stops28h 30m
Southampton Eastleigh
Sat 6/27
8:00 pm-8:58 pm
3 stops32h 58m
$2,227
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Sun 5/24
7:40 pm-8:25 am
2 stops28h 45m
Southampton Eastleigh
Wed 5/27
6:25 pm-2:55 pm
2 stops28h 30m
$5,899
San DiegoSouthampton
SAN - SOU
SANSOU
San Diego
Thu 5/28
4:45 pm-7:25 pm
2 stops18h 40m
Southampton Eastleigh
Mon 6/1
6:25 pm-2:55 pm
2 stops28h 30m
$5,899
Showing 1-10 of 11 resultsSorted by cheapest first
Best time to book a flight from San Diego to Portsmouth
Have a flexible travel schedule? Discover the best time to fly to Portsmouth from San Diego with our price prediction graph.
SAN-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 San Diego to Portsmouth
SAN-P0R
SAN-SOU
What is the cheapest time of day to fly from SAN to P0R?
Find hourly flight availability from San Diego 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 May 11, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Diego to Portsmouth as you normally would.
Weekly flight availability from San Diego to Portsmouth
Explore weekly flight availability from San Diego 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 May 11, 2026.
The most flights from SAN to P0R are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).
Related info for your journey
Find useful and relevant information for your journey from San Diego to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from San Diego
Popular flights
Top destinations
Alternative routes for San Diego 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 San Diego to Portsmouth by cabin class
Find flights from San Diego to Portsmouth, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Diego and Portsmouth flights
Browse other San Diego and Portsmouth flight options. Last updated on May 11, 2026.
Other flights from San Diego
Browse through other flights departing from San Diego. Flights are based on user searches made on Cheapflights and were last updated on May 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
San Diego to Portsmouth flights
Consider these flights traveling from San Diego to Portsmouth.
Top 9 airlines flying from San Diego to Portsmouth
Discover the top 9 airlines that operate flights from San Diego 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 May 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$181 | Average$1,178 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$538 | Average$792 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$552 | Average$994 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$567 | Average$938 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$568 | Average$830 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$578 | Average$706 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$593 | Average$945 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$621 | Average$884 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$623 | Average$670 | FlexibilityNo cancel fee | On-time72% |