SJU - LHR

$267 Find Cheap Flights from San Juan to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Juan to London departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to London.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Juan to London (SJU-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Juan to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Juan to London

Tue, Oct 21 - Tue, Oct 28
British Airways Logo
1:35 pm - 9:25 amSJU-LHR
14h 50m1 stop
British Airways Logo
9:15 am - 7:55 pmLHR-SJU
14h 40m1 stop
$546British Airways
Find Deal
Wed, Sep 10 - Wed, Sep 17
KLM Logo
5:46 pm - 1:30 pmSJU-LHR
14h 44m1 stop
KLM Logo
9:20 am - 10:00 pmLHR-SJU
17h 40m1 stop
$568KLM
Find Deal
Tue, Sep 9 - Tue, Sep 16
Virgin Atlantic Logo
6:00 pm - 11:25 amSJU-LHR
12h 25m1 stop
Virgin Atlantic Logo
6:30 am - 11:47 pmLHR-SJU
22h 17m2 stops
$570Virgin Atlantic
Find Deal
Mon, Nov 24 - Fri, Dec 5
United Airlines Logo
2:05 am - 9:20 pmSJU-LHR
15h 15m1 stop
United Airlines Logo
6:35 am - 10:22 pmLHR-SJU
19h 47m2 stops
$573United Airlines
Find Deal
Wed, Sep 10 - Wed, Sep 17
Delta Logo
7:00 am - 7:15 amSJU-LHR
19h 15m1 stop
Delta Logo
6:30 am - 11:44 pmLHR-SJU
22h 14m2 stops
$575Delta
Find Deal
Tue, Sep 23 - Wed, Oct 1
United Airlines Logo
1:05 am - 8:40 pmSJU-LHR
14h 35m1 stop
United Airlines Logo
1:00 pm - 11:57 pmLHR-SJU
15h 57m1 stop
$576United Airlines
Find Deal
Tue, Sep 23 - Wed, Oct 1
United Airlines Logo
1:05 am - 8:40 pmSJU-LHR
14h 35m1 stop
United Airlines Logo
1:00 pm - 11:57 pmLHR-SJU
15h 57m1 stop
$577United Airlines
Find Deal
Mon, Oct 20 - Tue, Oct 28
Air Canada Logo
1:05 am - 6:30 amSJU-LHR
24h 25m2 stops
Air Canada Logo
1:00 pm - 11:49 amLHR-SJU
26h 49m2 stops
$583Air Canada
Find Deal
Wed, Oct 29 - Fri, Nov 7
Delta Logo
7:15 am - 8:45 amSJU-LHR
21h 30m2 stops
Delta Logo
3:50 pm - 2:12 pmLHR-SJU
26h 22m2 stops
$587Delta
Find Deal
Tue, Sep 23 - Mon, Sep 29
Air Canada Logo
1:05 am - 8:35 amSJU-LHR
26h 30m2 stops
Air Canada Logo
3:50 pm - 1:45 pmLHR-SJU
26h 55m2 stops
$633Air Canada
Find Deal
Booking Insights

KAYAK's insights & trends for San Juan to London flights

Get data-powered insights and trends into flights from San Juan to London to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

What’s the cheapest day of the week to fly from San Juan to London?

The average price of all round-trip flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to London on a Wednesday and more expensive on a Friday. On your return trip to San Juan, you should consider flying back on a Wednesday, and avoid Mondays for better deals.

What is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport is September, where tickets cost $681 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,201 and $1,139 respectively.

How far in advance should I book a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport, you should book around 3 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$267
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from San Juan to London

When to book flights from San Juan to London

Are your dates flexible? Find out the best times to travel from San Juan to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Juan to London flights

  • What is the cheapest flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to London Heathrow Airport was $267 for a one-way ticket and $546 for a round-trip.

  • Do I need a passport to fly between San Juan and London?

    Yes

  • Which airports will I be using when flying from San Juan to London?

    San Juan and London are both served by 1 main airport. You will leave San Juan from San Juan Luis Munoz Marin Intl and will be arriving at London Heathrow.

  • Which aircraft models fly most regularly from San Juan to London?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Juan to London?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between San Juan and London, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from San Juan to London, Delta or Virgin Atlantic?

    The two airlines most popular with KAYAK users for flights from San Juan to London are Delta and Virgin Atlantic. With an average price for the route of $797 and an overall rating of 8.0, Delta is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of $778 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San Juan to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Juan to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Juan to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from San Juan is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Juan to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to San Juan with another airline. Booking your flights between San Juan and LHR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Juan to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from San Juan up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from San Juan to London

 
See real verified KAYAK customer reviews for airlines flying from San Juan to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Juan to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7980 reviews
7.9Comfort
8.2Boarding
8.5Crew
7.3Food
7.9Entertainment
Airline reviews

Great. Very smooth. Plenty of information. However, wish they would give out a menu in advance of making a dinner choice like other international airlines. The flight attendant says chicken or pasta and there are details about ingredients or spices requiring the passenger to ask which requires the flight attendant to answer many times. So easy to solve this problem. P

10.0 ExcellentRobert, Jul 2025DTW - LHR
Read more Delta reviews

Great. Very smooth. Plenty of information. However, wish they would give out a menu in advance of making a dinner choice like other international airlines. The flight attendant says chicken or pasta and there are details about ingredients or spices requiring the passenger to ask which requires the flight attendant to answer many times. So easy to solve this problem. P

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Boarding was tough as we had to take a bus out to the plane and walk up a lot of stairs. Difficult with heavy carry-ons that said I got an entire empty row of seats, which was excellent for an international flight. Food was very mediocre but happy with the comfort so not complaining.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

Zero updates from the pilots for 30 minutes in the tarmac

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

All fine save for the abominable catering. Really gone downhill. We found it all inedible.

Very dissatisfied with the fact that I had upgraded to first class for the second part of my trip only to find out that the lounge was still not available to me, as well as not having any food or drink service on the flight due to weather, so I lost out more than what I paid for.

Not good , late, and long. We came home so late and spent so much time flying around and taxiing

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Awful. There was a minor problem with a fridge and they had us 2 hours in the runway before take off. The paper work alone took them half hour. There was no attemp to make up time up while in teansit and when we arrived, they had us another half hour in the plane because of traffic. I, and a bunch of people, lost their onnection flights for 5 to 10 minutes. Not even the attemp to wait given thar all delays, but the taxing, were United's fault. Then another 45 mins to get an agent and no flight alternatives for 2 days. Im am very disapointed with this "premium carrier".

The boarding of took of late.The presentation of the food was horrable as was the tast of the food was cold and tastless.

Its good expeince but in enternteiment please be like you tube the music i like or movie

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

Following a paid seat upgrade for enhanced comfort, I encountered an unacceptable odor in my assigned area. It took three hours for the crew to relocate me, and the replacement seat was unacceptably close to the lavatory, offering no improvement.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

I did not fly by vergin atlantic from bangalore to vasco da gama

Your flight delayed at Heathrow n I almost missed my mother funeral.you idiots. I had to waste 10 hours in different airports. Thank your stars I'm not suing you.

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

More choices on menu. Seemed only thing offered was Scottish, and while that’s good for the Scot’s it doesn’t help the Americans who don’t like that food. And I really hate it when, during sleep time the attendants have a very loud conversation right over you. Lastly, I paid 5000 dollars for business class, and having to pay more to choose my seat early is really an insult. Seems greedy

The chicken adobo was a little too spicy but good otherwise. My personal opinion. Movie selection could be improved, too many horror movies. Could add a few more chick flicks! The flight was bumpy at times. We arrived a little early too! Flight attendants friendly.

Again flight was awesome except British Airways lost both gate checked luggage’s. Still missing

really bad they refused to check in luggages that I had purchased, even showing them the transaction receipt from british airways app the staff in miami was MEDIOCRE

Crew was great and responsive. Entertainment quit working with about 4 hours remaining on the flight. My seat cushion was broken.

Not very good , the stewardess were unfriendly and they don't like to be bothered. Cos was a night flight and they need to sleep.

British Airways staff are very polite and willing to help.

This particular flight wasn't very full at the back, so there were three seats available for spreading out and getting relatively comfortable

The captain gave good announcements and the flight attendants were friendly. The WiFi was pretty good. The plane itself looked very old inside and the seats were very uncomfortable. The screens in the seat backs were the smallest I’ve ever seen. There were so many loud and obnoxious kids on this flight and the parents didn’t do much to try to quiet them down. Some had videos and games on tablets with higher than necessary volume going the whole time.

Too many long delays with JetBlue. Worst major airline that serves JFK but unfortunately I keep going back because of the prices.

No overhead baggage room even though I was seated in row 2. Consequently had to check in my carry on bag. Baggage carousel was jammed. Took 45 min to get my bag.

Excellent from start to finish. All staff members were amazing!

Cancelled flight with no specific instructions to get a boarding pass for another flight. The whole flight of people were in line for an hour because there was only 1 person to help at the desk. This was unusual for JetBlue.

Overall was excellent. Will definitely us JetBlue in the future.

Love the mosaic program, being able to move to an extra space seat for free is awesome

Flight was on time arrived at the destination 10min early they kept in touch via email

I like their airplanes because they have plenty of legroom in their seats they always work with me if I have a change of plans on my tickets courteous and I always feel safe flying with them.

The flights are back on time and everything else runs perfectly.

Everything you need to know for your flight from San Juan to London

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.