Flights from London to Islamabad
This is the single busiest corridor between Britain and Pakistan, and the one where a week of flexibility is worth the most money. London is searched as a city rather than a single airport, so the fares below can depart from Heathrow, Gatwick, Stansted or Luton, always check which one your ticket actually uses before booking onward transport.
London to Islamabad: cached fares
from $315 one-way
LON → ISB route insight
Computed from real cached return fares for this route. Prices change; use it as a guide, not a promise.
Cheapest month
November 2026
from $615 return
Typical return price
$700
median return fare across 10 months of cached data
Cheapest airline most often
Air Arabia
cheapest in 4 of 10 months
Direct fares
Rarely cached
connections usually win on price
Cheapest month · LON → ISB
Lowest cached round-trip fare found per month. Prices change constantly; tap a month to search it.
Prices come from the seller and we add no fees on top. Booking happens with the airline or agency we link you to. How we make money.
Questions about this route
- Which London airport will I fly from?
- LON covers all of them. Heathrow carries most of the full-service traffic on this corridor, but a cheaper itinerary may well leave from Gatwick or Stansted. The seller’s page shows the exact airport before you pay.
- When is London to Islamabad cheapest?
- The monthly calendar further down this page is built from real cached fares for this exact corridor, so it beats any general rule of thumb. As a pattern, late winter and autumn are soft and both Eids are brutal.
- Is a one-stop itinerary worth it?
- Usually yes on price. Connecting through Doha, Dubai, Abu Dhabi or Istanbul is often meaningfully cheaper than flying direct, at the cost of three to five extra hours. If the layover is long, our stopover guides show how to use it.
- How far ahead should I book for Eid?
- Months, not weeks. Eid fares on this route start climbing roughly three months out and rarely come back down, because demand is fixed to a date that everybody knows in advance.