ISP - LON

$1,278 Find Cheap Flights from Islip to London

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to London departing on 1/31. 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, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to London, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,278
Multiple Airlines
Sat 1/31Sat 2/7
ISP - LHR • 2 stops
Cheapest one-way
Multiple Airlines
Thu 12/18
ISP - LON • multi-stop
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We hope you love your trip to London!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Islip to London (ISP-LON)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip 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.

Recent round-trip flight deals from Islip to London

Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
12:30 pm - 7:10 am
ISP
-
LHR
13h 40m2 stops
Multiple Airlines Logo
7:50 am - 7:45 pm
LHR
-
ISP
16h 55m2 stops
$1,278Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
9:59 am - 7:10 am
ISP
-
LHR
16h 11m2 stops
Multiple Airlines Logo
6:50 am - 7:45 pm
LHR
-
ISP
17h 55m3 stops
$1,297Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
12:30 pm - 3:30 pm
ISP
-
LHR
22h 00m2 stops
Multiple Airlines Logo
9:20 am - 4:10 pm
LHR
-
ISP
11h 50m1 stop
$1,545Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
12:30 pm - 6:55 am
ISP
-
LHR
13h 25m1 stop
Multiple Airlines Logo
9:20 am - 4:10 pm
LHR
-
ISP
11h 50m1 stop
$1,974Multiple Airlines
Sat, Jan 10 - Sun, Jan 11
Multiple Airlines Logo
10:00 am - 4:50 pm
ISP
-
LHR
25h 50m2 stops
Multiple Airlines Logo
8:45 pm - 8:52 am
LHR
-
ISP
41h 07m2 stops
$2,094Multiple Airlines
Mon, Dec 29 - Sat, Jan 3
Multiple Airlines Logo
9:59 am - 7:00 am
ISP
-
LHR
16h 01m1 stop
Multiple Airlines Logo
11:40 am - 7:45 pm
LHR
-
ISP
13h 05m1 stop
$3,099Multiple Airlines
Sat, Jan 10 - Sun, Jan 11
Multiple Airlines Logo
12:30 pm - 6:55 am
ISP
-
LHR
13h 25m1 stop
Multiple Airlines Logo
9:20 am - 4:10 pm
LHR
-
ISP
11h 50m1 stop
$3,175Multiple Airlines
Mon, Dec 29 - Sat, Jan 3
Multiple Airlines Logo
10:46 am - 4:50 pm
ISP
-
LHR
25h 04m2 stops
Multiple Airlines Logo
7:50 am - 10:01 am
LHR
-
ISP
31h 11m2 stops
$3,443Multiple Airlines
Mon, Dec 29 - Sat, Jan 3
Multiple Airlines Logo
8:35 pm - 10:50 am
ISP
-
LHR
33h 15m2 stops
Multiple Airlines Logo
9:20 am - 4:10 pm
LHR
-
ISP
11h 50m1 stop
$3,893Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
10:00 am - 7:30 am
ISP
-
LGW
16h 30m1 stop
Multiple Airlines Logo
11:20 am - 8:55 am
LGW
-
ISP
26h 35m1 stop
$6,620Multiple Airlines
Booking Insights

When to book flights from Islip to London

Are your dates flexible? Find out the best times to travel from Islip 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 flights from Islip to London

  • What is the cheapest flight from Islip to London?

    In the last 3 days, the lowest price for a flight from Islip to London was $1,278 for a round-trip ticket.

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

    A passport is required to fly from Islip to London.

  • Which aircraft models fly most regularly from Islip to London?

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

  • How does KAYAK find such low prices on flights from Islip 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 Islip to London.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Islip 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 Islip 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 Islip with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip 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 Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Islip to London

Information on your arrival and departure airports

Islip (ISP)