$391+ Cheap flights from San Juan to London (LON)
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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LON
Apr 26 — May 31
Round-trip
1 adult, Economy
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Cheapest flights from San Juan to LondonExplore the most affordable flight options available from San Juan to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.
Explore the most affordable flight options available from San Juan to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.
This Expedia deal was found by Cheapflights users on 3/24. 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.
Sun 9/272:05 pm
SJU
- LHR
1 stop13h 55m
Iberia
Thu 10/86:15 am
LHR
- SJU
1 stop14h 10m
Iberia
Deal found 3/24![Iberia logo]()
$757
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:20 pm
SJU
- LHR
1 stop14h 50m
United Airlines
Fri 11/277:30 am
LHR
- SJU
2 stops18h 52m
United Airlines
Deal found 3/24![United Airlines logo]()
$782
This KLM deal was found by Cheapflights users on 3/22. 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.
Sun 10/187:30 am
SJU
- LHR
1 stop17h 55m
KLM
Thu 10/2211:15 am
LHR
- SJU
1 stop29h 21m
KLM
Deal found 3/22![KLM logo]()
$787
This KLM deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/301:10 pm
SJU
- LHR
1 stop14h 40m
KLM
Fri 1/83:50 pm
LHR
- SJU
1 stop24h 05m
KLM
Deal found 3/23![KLM logo]()
$791
This British Airways deal was found by Cheapflights users on 3/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:55 pm
SJU
- LHR
1 stop13h 55m
British Airways
Tue 11/2411:15 am
LHR
- SJU
1 stop16h 41m
British Airways
Deal found 3/25![British Airways logo]()
$800
This United Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:25 pm
SJU
- LHR
1 stop12h 50m
United Airlines
Tue 8/259:30 am
LHR
- SJU
2 stops19h 20m
United Airlines
Deal found 3/23![United Airlines logo]()
$803
This Delta deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:00 am
SJU
- LHR
2 stops19h 20m
Delta
Tue 11/248:00 pm
LHR
- SJU
1 stop21h 05m
Delta
Deal found 3/23![Delta logo]()
$804
This Orbitz deal was found by Cheapflights users on 3/24. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:05 pm
SJU
- LHR
1 stop13h 55m
Iberia
Thu 10/86:15 am
LHR
- SJU
1 stop14h 10m
Iberia
Deal found 3/24![Iberia logo]()
$807
This Travelocity deal was found by Cheapflights users on 3/24. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:37 pm
SJU
- LHR
2 stops19h 58m
Iberia
Tue 11/249:45 am
LHR
- SJU
1 stop18h 11m
Iberia
Deal found 3/24![Iberia logo]()
$808
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 4/163:21 am
SJU
- LGW
2 stops21h 59m
Multiple Airlines
Mon 4/272:00 pm
LGW
- SJU
1 stop14h 24m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$808
This British Airways deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/232:05 pm
SJU
- LHR
1 stop13h 55m
British Airways
Mon 9/289:15 am
LHR
- SJU
1 stop14h 35m
British Airways
Deal found 3/23![British Airways logo]()
$814
This Delta deal was found by Cheapflights users on 3/24. 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 9/131:30 pm
SJU
- LHR
1 stop12h 15m
Delta
Wed 9/166:15 am
LHR
- SJU
2 stops22h 29m
Delta
Deal found 3/24![Delta logo]()
$829
Best flights from San Juan to LondonDiscover carefully curated flight deals from San Juan to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 27, 2026.
Discover carefully curated flight deals from San Juan to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 27, 2026.
This Norse deal was found by Cheapflights users on 3/24. 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 Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:45 am
SJU
- LGW
1 stop17h 35m
Multiple Airlines
Sun 4/192:00 pm
LGW
- SJU
1 stop17h 01m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$844
This Delta deal was found by Cheapflights users on 3/24. 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 4/202:03 pm
SJU
- LHR
2 stops18h 12m
Delta
Tue 4/288:20 am
LHR
- SJU
2 stops19h 53m
Delta
Deal found 3/24![Delta logo]()
$864
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/211:00 am
SJU
- LHR
1 stop14h 40m
United Airlines
Wed 4/296:55 am
LHR
- SJU
2 stops19h 29m
United Airlines
Deal found 3/24![United Airlines logo]()
$881
This TAP AIR PORTUGAL deal was found by Cheapflights users on 3/22. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/195:01 am
SJU
- LGW
2 stops49h 19m
TAP AIR PORTUGAL
Thu 4/309:20 pm
LGW
- SJU
2 stops55h 13m
TAP AIR PORTUGAL
Deal found 3/22![TAP AIR PORTUGAL logo]()
$1,081
This JetBlue deal was found by Cheapflights users on 3/26. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/114:50 pm
SJU
- LGW
1 stop11h 45m
JetBlue
Mon 6/2912:20 pm
LGW
- SJU
1 stop18h 08m
JetBlue
Deal found 3/26![JetBlue logo]()
$1,190
This Delta deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/317:30 am
SJU
- LHR
2 stops18h 40m
Delta
Tue 4/78:05 pm
LHR
- SJU
2 stops25h 13m
Delta
Deal found 3/23![Delta logo]()
$954
This United Airlines deal was found by Cheapflights users on 3/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:56 pm
SJU
- LHR
1 stop14h 59m
United Airlines
Sat 5/97:30 am
LHR
- SJU
2 stops18h 54m
United Airlines
Deal found 3/21![United Airlines logo]()
$954
This Turkish Airlines deal was found by Cheapflights users on 3/21. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:25 am
SJU
- LGW
2 stops25h 45m
Multiple Airlines
Sat 5/97:10 am
LGW
- SJU
2 stops23h 57m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$1,075
This Delta deal was found by Cheapflights users on 3/26. 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.
Thu 4/302:03 pm
SJU
- LHR
2 stops17h 07m
Delta
Mon 5/119:55 am
LHR
- SJU
2 stops18h 40m
Delta
Deal found 3/26![Delta logo]()
$987
This TAP AIR PORTUGAL deal was found by Cheapflights users on 3/26. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/283:00 pm
SJU
- LGW
2 stops19h 35m
TAP AIR PORTUGAL
Sun 5/1012:05 pm
LGW
- SJU
2 stops19h 36m
TAP AIR PORTUGAL
Deal found 3/26![TAP AIR PORTUGAL logo]()
$1,115
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:20 am
SJU
- LHR
2 stops18h 10m
United Airlines
Tue 6/96:50 am
LHR
- SJU
2 stops19h 34m
United Airlines
Deal found 3/24![United Airlines logo]()
$1,077
This TAP AIR PORTUGAL deal was found by Cheapflights users on 3/22. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/165:30 am
SJU
- LGW
2 stops47h 15m
TAP AIR PORTUGAL
Wed 4/2912:05 pm
LGW
- SJU
2 stops28h 55m
TAP AIR PORTUGAL
Deal found 3/22![TAP AIR PORTUGAL logo]()
$1,151
This Icelandair deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:25 am
SJU
- LGW
2 stops27h 15m
Multiple Airlines
Wed 4/293:40 pm
LGW
- SJU
2 stops39h 59m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$1,153
This Delta deal was found by Cheapflights users on 3/22. 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.
Wed 6/102:04 pm
SJU
- LHR
2 stops17h 01m
Delta
Wed 6/178:05 pm
LHR
- SJU
2 stops22h 26m
Delta
Deal found 3/22![Delta logo]()
$1,101
This Delta deal was found by Cheapflights users on 3/22. 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.
Tue 5/267:05 am
SJU
- LHR
1 stop22h 15m
Delta
Tue 6/94:20 pm
LHR
- SJU
2 stops26h 11m
Delta
Deal found 3/22![Delta logo]()
$1,101
This Icelandair deal was found by Cheapflights users on 3/24. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/132:20 pm
SJU
- LGW
2 stops16h 25m
Multiple Airlines
Wed 7/13:40 pm
LGW
- SJU
2 stops39h 40m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$1,216
This TAP AIR PORTUGAL deal was found by Cheapflights users on 3/22. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:00 pm
SJU
- LGW
2 stops37h 45m
TAP AIR PORTUGAL
Wed 4/2912:05 pm
LGW
- SJU
2 stops28h 55m
TAP AIR PORTUGAL
Deal found 3/22![TAP AIR PORTUGAL logo]()
$1,233
This Icelandair deal was found by Cheapflights users on 3/22. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/171:30 pm
SJU
- LGW
2 stops20h 10m
Multiple Airlines
Wed 7/13:40 pm
LGW
- SJU
2 stops39h 40m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$1,257
This Delta deal was found by Cheapflights users on 3/21. 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.
Thu 6/116:00 am
SJU
- LHR
2 stops20h 10m
Delta
Mon 6/156:35 pm
LHR
- SJU
2 stops23h 56m
Delta
Deal found 3/21![Delta logo]()
$1,231
Last-minute flights from San Juan to LondonDiscover last-minute flight deals from San Juan to London. Data last updated March 27, 2026 and is based on user searches.
Discover last-minute flight deals from San Juan to London. Data last updated March 27, 2026 and is based on user searches.
This Norse deal was found by Cheapflights users on 3/24. 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 Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:45 am
SJU
- LGW
1 stop17h 35m
Multiple Airlines
Sun 4/192:00 pm
LGW
- SJU
1 stop17h 01m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$844
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
Wed 4/153:21 am
SJU
- LGW
2 stops21h 59m
Multiple Airlines
Mon 4/272:00 pm
LGW
- SJU
1 stop14h 24m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$830
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 4/163:21 am
SJU
- LGW
2 stops21h 59m
Multiple Airlines
Mon 4/272:00 pm
LGW
- SJU
1 stop14h 24m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$808
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 4/163:21 am
SJU
- LGW
2 stops21h 59m
Multiple Airlines
Sat 4/251:05 pm
LGW
- SJU
1 stop15h 54m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$877
This Delta deal was found by Cheapflights users on 3/22. 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 4/197:30 am
SJU
- LHR
1 stop17h 55m
Delta
Wed 4/2911:45 am
LHR
- SJU
2 stops17h 14m
Delta
Deal found 3/22![Delta logo]()
$831
This Delta deal was found by Cheapflights users on 3/22. 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 4/197:30 am
SJU
- LHR
1 stop17h 55m
Delta
Tue 4/286:15 am
LHR
- SJU
2 stops22h 44m
Delta
Deal found 3/22![Delta logo]()
$838
This Delta deal was found by Cheapflights users on 3/24. 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 4/207:15 am
SJU
- LHR
1 stop18h 30m
Delta
Tue 4/289:20 am
LHR
- SJU
1 stop18h 53m
Delta
Deal found 3/24![Delta logo]()
$860
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 4/218:40 pm
SJU
- LGW
1 stop14h 45m
Multiple Airlines
Mon 4/272:00 pm
LGW
- SJU
1 stop14h 24m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$841
This KLM deal was found by Cheapflights users on 3/24. 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 4/221:25 pm
SJU
- LHR
1 stop15h 55m
KLM
Wed 4/299:20 am
LHR
- SJU
1 stop18h 53m
KLM
Deal found 3/24![KLM logo]()
$851
This Delta deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:30 am
SJU
- LHR
2 stops18h 40m
Delta
Wed 4/2911:15 am
LHR
- SJU
1 stop16h 58m
Delta
Deal found 3/23![Delta logo]()
$864
This Avianca deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/251:05 pm
SJU
- LHR
1 stop21h 30m
Avianca
Fri 5/810:05 pm
LHR
- SJU
1 stop24h 05m
Avianca
Deal found 3/23![Avianca logo]()
$850
This Avianca deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/281:05 pm
SJU
- LHR
1 stop21h 30m
Avianca
Sun 5/1010:05 pm
LHR
- SJU
1 stop24h 05m
Avianca
Deal found 3/23![Avianca logo]()
$845
One-way flights from San Juan to LondonSearch for one-way flight options from San Juan to London. Find affordable one-way fares based on user searches. Data last updated March 27, 2026.
Search for one-way flight options from San Juan to London. Find affordable one-way fares based on user searches. Data last updated March 27, 2026.
This Trip.com deal was found by Cheapflights users on 3/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/101:27 pm
SJU
- LHR
1 stop12h 03m
TAP AIR PORTUGAL
Deal found 3/25![TAP AIR PORTUGAL logo]()
$391
This Trip.com deal was found by Cheapflights users on 3/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:20 am
SJU
- LGW
1 stop21h 15m
TAP AIR PORTUGAL
Deal found 3/25![TAP AIR PORTUGAL logo]()
$391
This JetBlue deal was found by Cheapflights users on 3/24. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1810:05 pm
SJU
- LHR
1 stop17h 40m
JetBlue
Deal found 3/24![JetBlue logo]()
$411
This TAP AIR PORTUGAL deal was found by Cheapflights users on 3/24. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/303:40 pm
SJU
- LGW
2 stops23h 45m
TAP AIR PORTUGAL
Deal found 3/24![TAP AIR PORTUGAL logo]()
$420
This TAP AIR PORTUGAL deal was found by Cheapflights users on 3/26. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:00 pm
SJU
- LHR
2 stops26h 55m
TAP AIR PORTUGAL
Deal found 3/26![TAP AIR PORTUGAL logo]()
$430
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Mon 6/17:04 pm
SJU
- LGW
3 stops45h 11m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$442
This Justfly.com deal was found by Cheapflights users on 3/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1710:05 pm
SJU
- LHR
1 stop17h 40m
JetBlue
Deal found 3/25![JetBlue logo]()
$445
This Norse deal was found by Cheapflights users on 3/24. 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 Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/47:00 am
SJU
- LGW
1 stop22h 00m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$448
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Wed 6/106:00 am
SJU
- LGW
3 stops33h 10m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$452
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
Sat 3/281:59 am
SJU
- LGW
3 stops51h 01m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$457
This FlightHub deal was found by Cheapflights users on 3/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/47:00 am
SJU
- LHR
1 stop21h 30m
JetBlue
Deal found 3/24![JetBlue logo]()
$461
This TAP AIR PORTUGAL deal was found by Cheapflights users on 3/24. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/185:01 am
SJU
- LGW
2 stops34h 24m
TAP AIR PORTUGAL
Deal found 3/24![TAP AIR PORTUGAL logo]()
$467
Find flight deals from San Juan to London
Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 27, 2026.
Round-trip from | $808 (Kiwi.com) |
|---|---|
One-way from | $391 (Trip.com) |
Popular in | June |
Cheapest in | February |
Average price | $702 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Juan to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 27, 2026.
Use the filters below to find and compare flights from San Juan to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San JuanLondon
SJU - LGW
SJULGW
San Juan Luis Munoz Marin Intl
Wed 4/1
7:45 am-6:20 am
1 stop17h 35m
London Gatwick
Sun 4/19
2:00 pm-2:01 am
1 stop17h 01m
$844
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Mon 4/20
2:03 pm-1:15 pm
2 stops18h 12m
London Heathrow
Tue 4/28
8:20 am-11:13 pm
2 stops19h 53m
$864
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Tue 4/21
1:00 am-8:40 pm
1 stop14h 40m
London Heathrow
Wed 4/29
6:55 am-9:24 pm
2 stops19h 29m
$881
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Tue 3/31
7:30 am-7:10 am
2 stops18h 40m
London Heathrow
Tue 4/7
8:05 pm-4:18 pm
2 stops25h 13m
$954
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Thu 4/23
3:56 pm-11:55 am
1 stop14h 59m
London Heathrow
Sat 5/9
7:30 am-9:24 pm
2 stops18h 54m
$954
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Thu 4/30
2:03 pm-12:10 pm
2 stops17h 07m
London Heathrow
Mon 5/11
9:55 am-11:35 pm
2 stops18h 40m
$987
San JuanLondon
SJU - LGW
SJULGW
San Juan Luis Munoz Marin Intl
Thu 4/23
6:25 am-1:10 pm
2 stops25h 45m
London Gatwick
Sat 5/9
7:10 am-2:07 am
2 stops23h 57m
$1,075
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Wed 5/20
7:20 am-6:30 am
2 stops18h 10m
London Heathrow
Tue 6/9
6:50 am-9:24 pm
2 stops19h 34m
$1,077
San JuanLondon
SJU - LGW
SJULGW
San Juan Luis Munoz Marin Intl
Sun 4/19
5:01 am-11:20 am
2 stops49h 19m
London Gatwick
Thu 4/30
9:20 pm-11:33 pm
2 stops55h 13m
$1,081
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Wed 6/10
2:04 pm-12:05 pm
2 stops17h 01m
London Heathrow
Wed 6/17
8:05 pm-1:31 pm
2 stops22h 26m
$1,101
Showing 1-10 of 36 resultsSorted by cheapest first
Best time to book a flight from San Juan to London
Have a flexible travel schedule? Discover the best time to fly to London from San Juan with our price prediction graph.
PR1-LON
SJU-LGW
SJU-LHR
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 Juan to London
PR1-LON
SJU-LGW
SJU-LHR
How far ahead should I book a flight from San Juan to London?
Use this chart to determine the optimal time to book a round-trip flight from San Juan to London. Price data was last updated on March 13, 2026.
The best time to book flights from San Juan to London is 15 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from San Juan to London?
Currently, September is the cheapest month in which you can book a flight from San Juan to London (average of $101). Flying from San Juan to London in June is currently the most expensive (average of $922). 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.
How much does it cost to fly round-trip from San Juan to London?
Reviews of airlines servicing London
Get insights into the airlines that provide service to London. 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 London. Reviews last updated March 27, 2026.
See what other customers who have flown with Delta,United Airlines, andJetBlue from San Juan to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.9
Food
7.2
Overall
7.9
Entertainment
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Food
7.2
Overall
7.9
Entertainment
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Food
7.2
Overall
7.9
Entertainment
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Food
7.2
Overall
7.9
Entertainment
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Food
7.2
Overall
7.9
Entertainment
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Food
7.2
Overall
7.9
Entertainment
7.8
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from San Juan to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsIlford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Borehamwood
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Sutton
Slough
Stansted
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Search flights from San Juan to London by cabin class
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Other flights to London
Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 27, 2026.
San Juan and London flights
Browse other San Juan and London flight options. Last updated on March 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from San Juan to London
Discover the top 5 airlines that operate flights from San Juan to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$101 | Average$846 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$584 | Average$711 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$600 | Average$799 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$605 | Average$741 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$655 | Average$883 | FlexibilityNo cancel fee | On-timeN/A |