Mumbai (BOM) to London (LON): 4,482 miles (7,213 km) great-circle, about 9h 30m nonstop by our estimate. Cheapest fare observed: $736 round-trip on IndiGo, with 1 stop, departing June 2, 2026.
$736 round-trip, IndiGo 6E17, departing 2026-06-02 at 04:15, returning 2026-07-15. The recorded itinerary left on a Tuesday, returning on a Wednesday 43 nights later; the fare was observed 38 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $736, it ranked 27th of the 30 round-trip fares we recorded from BOM (median $407). That is 16.4 cents per great-circle mile (round-trip price over one-way distance), below the BOM median of 22.3 cents across 30 round-trip routes.
Routes from BOM of similar length: Milan (4,044 mi) at $536 and St. Petersburg (3,507 mi) at $538.
IndiGo had the cheapest fare on 8 of 30 BOM routes. It is the longest of the 30 routes we track from BOM.
Of 49 departure airports with a fare to London, Mumbai (BOM) ranked 25th at $736. Lowest: $46 from Dublin (DUB); highest: $1356 from Sydney (SYD); 14 nonstop. Cheapest-fare airlines (routes): Ryanair (7), easyJet (4), Etihad (4), Frontier (4), Air Canada (3) and WestJet (3), plus 19 more.
That depends on your passport and trip, so check the official source for United Kingdom: GOV.UK: check if you need a UK visa. Connecting elsewhere? Check that country's transit rules too.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Kolkata, Europe/London; flight time is our estimate.