If you want a cheap flight from Boise to London, you've got six airlines to choose from. You can use the search box to filter your preferences, but we've found that the cheapest day to fly is 07 / Feb / 2025.
Make sure you use the search options above to search for flights to other airports in London, not just London Heathrow. The more options you look at, the better your chance of finding a cheap deal. Just so you know, the flight typically takes 15 hrs 5 mins.
There are about 20 flights to or via London every week, so you have plenty of options. Keep your eye out for flights with Delta Air Lines, KLM and Virgin Atlantic – these are the most popular airlines for flying to .
If you're planning on going to London during this time, you could take a look at other airport options. Or you could try to get a last-minute bargain.