$320+ Cheap flights from Luis Munoz Marin Intl (SJU) to Heathrow (LHR)
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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — LHR
Mar 14 — Mar 211
1 adult, Economy
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1. Tell us where you want to go
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Cheapest flights from Luis Munoz Marin Intl to HeathrowExplore the most affordable flight options available from Luis Munoz Marin Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.
Explore the most affordable flight options available from Luis Munoz Marin Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.
This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:30 am
SJU
- LHR
1 stop18h 25m
United Airlines
Wed 3/186:50 am
LHR
- SJU
2 stops18h 32m
United Airlines
Deal found 2/9![United Airlines logo]()
$578
This Delta deal was found by Cheapflights users on 2/9. 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.
Mon 3/95:30 pm
SJU
- LHR
1 stop14h 10m
Delta
Mon 3/168:40 am
LHR
- SJU
2 stops19h 19m
Delta
Deal found 2/9![Delta logo]()
$584
This Delta deal was found by Cheapflights users on 2/10. 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 3/107:30 am
SJU
- LHR
1 stop21h 30m
Delta
Tue 3/1710:00 am
LHR
- SJU
2 stops17h 59m
Delta
Deal found 2/10![Delta logo]()
$585
This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/99:15 am
SJU
- LHR
1 stop18h 15m
United Airlines
Mon 3/167:30 am
LHR
- SJU
2 stops17h 52m
United Airlines
Deal found 2/9![United Airlines logo]()
$589
This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/221:25 pm
SJU
- LHR
1 stop13h 55m
United Airlines
Wed 4/297:30 am
LHR
- SJU
2 stops18h 54m
United Airlines
Deal found 2/9![United Airlines logo]()
$596
This KLM deal was found by Cheapflights users on 2/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/91:17 pm
SJU
- LHR
1 stop14h 48m
KLM
Fri 3/203:50 pm
LHR
- SJU
1 stop22h 55m
KLM
Deal found 2/9![KLM logo]()
$597
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:25 pm
SJU
- LHR
1 stop12h 30m
JetBlue
Wed 3/187:25 am
LHR
- SJU
1 stop19h 26m
JetBlue
Deal found 2/9![JetBlue logo]()
$606
This JetBlue deal was found by Cheapflights users on 2/10. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:01 am
SJU
- LHR
1 stop12h 39m
JetBlue
Mon 3/1612:20 pm
LHR
- SJU
1 stop18h 07m
JetBlue
Deal found 2/10![JetBlue logo]()
$607
This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:05 am
SJU
- LHR
1 stop19h 35m
United Airlines
Wed 3/189:10 am
LHR
- SJU
2 stops16h 12m
United Airlines
Deal found 2/9![United Airlines logo]()
$611
This KLM deal was found by Cheapflights users on 2/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:34 pm
SJU
- LHR
1 stop14h 41m
KLM
Wed 4/299:20 am
LHR
- SJU
1 stop18h 53m
KLM
Deal found 2/9![KLM logo]()
$614
This KLM deal was found by Cheapflights users on 2/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:44 pm
SJU
- LHR
1 stop15h 36m
KLM
Tue 4/711:15 am
LHR
- SJU
1 stop17h 00m
KLM
Deal found 2/9![KLM logo]()
$623
Best flights from Luis Munoz Marin Intl to HeathrowDiscover carefully curated flight deals from Luis Munoz Marin Intl to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 12, 2026.
Discover carefully curated flight deals from Luis Munoz Marin Intl to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 12, 2026.
This Delta deal was found by Cheapflights users on 2/9. 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.
Mon 3/97:30 am
SJU
- LHR
1 stop18h 55m
Delta
Tue 3/178:40 am
LHR
- SJU
2 stops19h 19m
Delta
Deal found 2/9![Delta logo]()
$584
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:25 pm
SJU
- LHR
1 stop12h 30m
JetBlue
Wed 3/187:25 am
LHR
- SJU
1 stop19h 26m
JetBlue
Deal found 2/9![JetBlue logo]()
$606
This KLM deal was found by Cheapflights users on 2/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/92:44 pm
SJU
- LHR
1 stop14h 16m
KLM
Mon 3/164:35 pm
LHR
- SJU
1 stop23h 32m
KLM
Deal found 2/9![KLM logo]()
$606
This Delta deal was found by Cheapflights users on 2/9. 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.
Tue 3/107:30 am
SJU
- LHR
1 stop21h 30m
Delta
Tue 3/176:30 am
LHR
- SJU
2 stops21h 29m
Delta
Deal found 2/9![Delta logo]()
$584
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/104:15 am
SJU
- LHR
1 stop13h 25m
JetBlue
Mon 3/1612:20 pm
LHR
- SJU
1 stop14h 31m
JetBlue
Deal found 2/9![JetBlue logo]()
$606
This Delta deal was found by Cheapflights users on 2/9. 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.
Mon 3/95:30 pm
SJU
- LHR
1 stop14h 10m
Delta
Mon 3/168:40 am
LHR
- SJU
2 stops19h 19m
Delta
Deal found 2/9![Delta logo]()
$584
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/104:15 am
SJU
- LHR
1 stop13h 25m
JetBlue
Wed 3/187:25 am
LHR
- SJU
1 stop19h 26m
JetBlue
Deal found 2/9![JetBlue logo]()
$606
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/611:59 pm
SJU
- LHR
1 stop18h 01m
JetBlue
Mon 3/1612:20 pm
LHR
- SJU
1 stop17h 05m
JetBlue
Deal found 2/9![JetBlue logo]()
$606
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/911:10 am
SJU
- LHR
1 stop15h 45m
JetBlue
Wed 3/187:25 am
LHR
- SJU
1 stop19h 26m
JetBlue
Deal found 2/9![JetBlue logo]()
$606
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/611:59 pm
SJU
- LHR
1 stop18h 01m
JetBlue
Tue 3/1712:20 pm
LHR
- SJU
1 stop17h 05m
JetBlue
Deal found 2/9![JetBlue logo]()
$606
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/75:05 am
SJU
- LHR
1 stop12h 55m
JetBlue
Wed 3/187:25 am
LHR
- SJU
1 stop19h 26m
JetBlue
Deal found 2/9![JetBlue logo]()
$606
Last-minute flights from Luis Munoz Marin Intl to HeathrowDiscover last-minute flight deals from Luis Munoz Marin Intl to Heathrow. Data last updated February 12, 2026 and is based on user searches.
Discover last-minute flight deals from Luis Munoz Marin Intl to Heathrow. Data last updated February 12, 2026 and is based on user searches.
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/512:15 pm
SJU
- LHR
1 stop14h 40m
JetBlue
Mon 3/168:05 am
LHR
- SJU
1 stop18h 46m
JetBlue
Deal found 2/9![JetBlue logo]()
$606
This JetBlue deal was found by Cheapflights users on 2/10. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:01 am
SJU
- LHR
1 stop12h 39m
JetBlue
Thu 3/1212:20 pm
LHR
- SJU
1 stop18h 07m
JetBlue
Deal found 2/10![JetBlue logo]()
$607
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/53:05 pm
SJU
- LHR
1 stop14h 25m
JetBlue
Sun 3/157:45 am
LHR
- SJU
1 stop19h 06m
JetBlue
Deal found 2/9![JetBlue logo]()
$626
This Delta deal was found by Cheapflights users on 2/9. 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.
Mon 3/95:30 pm
SJU
- LHR
1 stop14h 10m
Delta
Mon 3/168:40 am
LHR
- SJU
2 stops19h 19m
Delta
Deal found 2/9![Delta logo]()
$584
This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/99:15 am
SJU
- LHR
1 stop18h 15m
United Airlines
Mon 3/167:30 am
LHR
- SJU
2 stops17h 52m
United Airlines
Deal found 2/9![United Airlines logo]()
$589
This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/96:40 am
SJU
- LHR
1 stop20h 50m
United Airlines
Fri 3/208:00 am
LHR
- SJU
2 stops17h 22m
United Airlines
Deal found 2/9![United Airlines logo]()
$597
This JetBlue deal was found by Cheapflights users on 2/10. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/910:59 pm
SJU
- LHR
1 stop18h 41m
JetBlue
Wed 3/187:25 am
LHR
- SJU
1 stop14h 05m
JetBlue
Deal found 2/10![JetBlue logo]()
$627
This Delta deal was found by Cheapflights users on 2/10. 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 3/106:15 am
SJU
- LHR
1 stop25h 25m
Delta
Mon 3/1610:00 am
LHR
- SJU
2 stops17h 59m
Delta
Deal found 2/10![Delta logo]()
$585
This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:05 am
SJU
- LHR
1 stop19h 35m
United Airlines
Wed 3/189:10 am
LHR
- SJU
2 stops16h 12m
United Airlines
Deal found 2/9![United Airlines logo]()
$611
This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:30 am
SJU
- LHR
1 stop18h 25m
United Airlines
Wed 3/186:50 am
LHR
- SJU
2 stops18h 32m
United Airlines
Deal found 2/9![United Airlines logo]()
$578
This KLM deal was found by Cheapflights users on 2/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:44 pm
SJU
- LHR
1 stop15h 36m
KLM
Tue 4/711:15 am
LHR
- SJU
1 stop17h 00m
KLM
Deal found 2/9![KLM logo]()
$623
One-way flights from Luis Munoz Marin Intl to HeathrowSearch for one-way flight options from Luis Munoz Marin Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated February 12, 2026.
Search for one-way flight options from Luis Munoz Marin Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated February 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/181:21 am
SJU
- LHR
2 stops50h 49m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$320
This Orbitz deal was found by Cheapflights users on 2/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:25 am
SJU
- LHR
1 stop21h 05m
JetBlue
Deal found 2/10![JetBlue logo]()
$326
This Mytrip deal was found by Cheapflights users on 2/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:00 am
SJU
- LHR
3 stops24h 50m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:40 am
SJU
- LHR
1 stop18h 05m
United Airlines
Deal found 2/9![United Airlines logo]()
$372
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/62:25 pm
SJU
- LHR
1 stop12h 30m
JetBlue
Deal found 2/9![JetBlue logo]()
$376
This JetBlue deal was found by Cheapflights users on 2/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1712:00 pm
SJU
- LHR
1 stop16h 30m
JetBlue
Deal found 2/9![JetBlue logo]()
$395
This Mytrip deal was found by Cheapflights users on 2/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2710:00 am
SJU
- LHR
2 stops19h 05m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/307:54 pm
SJU
- LHR
3 stops33h 06m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$406
This Orbitz deal was found by Cheapflights users on 2/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/216:10 am
SJU
- LHR
1 stop20h 45m
JetBlue
Deal found 2/9![JetBlue logo]()
$446
Find flight deals from Luis Munoz Marin Intl to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) to Heathrow (LHR). 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 February 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $578 (United Airlines) |
One-way from | $320 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $698 |
Cheapflights Fare Finder
Customize your flight search to find flights from Luis Munoz Marin Intl to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 12, 2026.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport that are best for you.
Fly from
Luis Munoz Marin Intl
Fly to
Heathrow
Route
Depart
Return
Price
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Mon 3/9
7:30 am-6:25 am
1 stop18h 55m
London Heathrow
Tue 3/17
8:40 am-11:59 pm
2 stops19h 19m
$584
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Tue 3/10
7:30 am-9:00 am
1 stop21h 30m
London Heathrow
Tue 3/17
6:30 am-11:59 pm
2 stops21h 29m
$584
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Mon 3/9
5:30 pm-11:40 am
1 stop14h 10m
London Heathrow
Mon 3/16
8:40 am-11:59 pm
2 stops19h 19m
$584
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Thu 3/5
2:25 pm-6:55 am
1 stop12h 30m
London Heathrow
Wed 3/18
7:25 am-10:51 pm
1 stop19h 26m
$606
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Mon 3/9
2:44 pm-9:00 am
1 stop14h 16m
London Heathrow
Mon 3/16
4:35 pm-12:07 pm
1 stop23h 32m
$606
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Tue 3/10
4:15 am-9:40 pm
1 stop13h 25m
London Heathrow
Mon 3/16
12:20 pm-10:51 pm
1 stop14h 31m
$606
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Tue 3/10
4:15 am-9:40 pm
1 stop13h 25m
London Heathrow
Wed 3/18
7:25 am-10:51 pm
1 stop19h 26m
$606
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Fri 3/6
11:59 pm-10:00 pm
1 stop18h 01m
London Heathrow
Mon 3/16
12:20 pm-1:25 am
1 stop17h 05m
$606
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Mon 3/9
11:10 am-6:55 am
1 stop15h 45m
London Heathrow
Wed 3/18
7:25 am-10:51 pm
1 stop19h 26m
$606
San JuanLondon
SJU - LHR
SJULHR
San Juan Luis Munoz Marin Intl
Fri 3/6
11:59 pm-10:00 pm
1 stop18h 01m
London Heathrow
Tue 3/17
12:20 pm-1:25 am
1 stop17h 05m
$606
Showing 1-10 of 15 results
- Most accurate provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Juan Luis Munoz Marin Intl Airport-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Juan Luis Munoz Marin Intl Airport-London Heathrow Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Juan Luis Munoz Marin Intl Airport-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Luis Munoz Marin Intl to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Luis Munoz Marin Intl with our price prediction graph.
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 Luis Munoz Marin Intl Airport to London Heathrow Airport
How far ahead should I book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?
Use this chart to determine the optimal time to book a round-trip flight from Luis Munoz Marin Intl to Heathrow. Price data was last updated on February 6, 2026.
The price you pay for your flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 69 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?
Currently, September is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport (average of $101). Flying from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $920). 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.
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated February 12, 2026.
Read through reviews of airlines operating flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport, such as Delta, Virgin Atlantic, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Boarding
8.1
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Boarding
8.1
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Boarding
8.1
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Boarding
8.1
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Boarding
8.1
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Entertainment
7.8
Food
7.2
Overall
7.9
Crew
8.5
Comfort
7.9
Boarding
8.1
Reviews
1 / 20
6.0
Goodpilar,May 2025
RSW - ATL
Related info for your journey
Find useful and relevant information for your journey from Luis Munoz Marin Intl to Heathrow. 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 Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsIlford
Croydon
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
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Other flights to Heathrow
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 12, 2026.
Luis Munoz Marin Intl and Heathrow flights
Browse other Luis Munoz Marin Intl and Heathrow flight options. Last updated on February 12, 2026.
Other flights from Luis Munoz Marin Intl
Browse through other flights departing from Luis Munoz Marin Intl. Flights are based on user searches made on Cheapflights and were last updated on February 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Luis Munoz Marin Intl to Heathrow
Discover the top 5 airlines that operate flights from Luis Munoz Marin Intl to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$101 | Average$864 | 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$997 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$652 | Average$794 | FlexibilityNo cancel fee | On-timeN/A |