Cheap flights from London to Islip, New York from £892
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from London to Islip
Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Islip (ISP). 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 11 July 2025.
Round-trip from | £892 |
---|---|
Popular in | August |
Cheapest in | September |
Average price | £480 |
Find flight deals from London to Islip
Cheapest flights from London to IslipExplore the most affordable flight options available from London to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.
Explore the most affordable flight options available from London to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from London to Islip 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 858,174 searches. Data last updated 11 July 2025.
Use the filters below to find and compare flights from London to Islip that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
LondonIslip
LHR - ISP
LHRISP
London Heathrow
Sat 23/8
09:40-20:01
1 stop15h 21m
Islip Long Island
Sat 30/8
11:53-08:05
1 stop15h 12m
LondonIslip
LHR - ISP
LHRISP
London Heathrow
Sun 24/8
09:45-20:01
2 stops15h 16m
Islip Long Island
Sun 31/8
14:19-07:50
1 stop12h 31m
Best time to book a flight from London to Islip
Have a flexible travel schedule? Discover the best time to fly to Islip from London with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from London to Islip
Reviews of airlines servicing Islip
Get insights into the airlines that provide service to Islip. 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 Islip. Reviews last updated 11 July 2025.
Read through reviews of airlines operating flights from London to Islip, such as Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Comfort
Crew
Boarding
Overall
Food
Reviews
James,Apr 2025
LAX - SFO
Entertainment
Comfort
Crew
Boarding
Overall
Food
Reviews
James,Apr 2025
LAX - SFO
Related info for your journey
Find useful and relevant information for your journey from London to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for London to Islip
See prices for flight routes from nearby airports that may be better suited for you.
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How does Cheapflights help users find flights from London to Islip?
Deals for London to Islip flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from London to Islip?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to Islip for you. Better yet — we are completely free to use.
Can Cheapflights find flights from London to Islip with no change fees?
Certainly. Search results for flights to Islip from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from London to Islip become cheaper?
Yes! Start tracking prices for London to Islip flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.