AirHint found the following cheapest one-way flights from Colombo (CMB) to London (LHR) in July 2025 (see full year).

One-Way flights

29 Jul	SriLankan Airlines
30 Jul	Air India
28 Jul	Air India
27 Jul	Air India
31 Jul	Air India
31 Jul	SriLankan Airlines	direct
30 Jul	SriLankan Airlines	direct
29 Jul	SriLankan Airlines	direct
28 Jul	SriLankan Airlines	direct
27 Jul	SriLankan Airlines	direct

Also check the deals for return flights from Colombo to London in July.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in London

Cheap car rent in London

Cheapest one-way flights from Colombo to London in July from 239€

One-Way flights