There are several airlines that offer budget-friendly flights to London from India. It's important that while these airlines may offer cheaper fares, they may also have different baggage allowances and additional fees for services that are included in other airlines' fares. Additionally, it's important to book your flight in advance and be flexible with your travel dates to find the best deals on flights to London. You can use Snagout.com to search for cheap flights to London from India based on your preferred dates and price.