American Airlines flights from Boston to London Heathrow Airport (BOS - LHR)

• Can I get a flight from Boston to London Heathrow Airport on American Airlines for under $800?

  Boston to London Heathrow Airport flights on American Airlines are currently available under $800. 4 flights have been found by Cheapflights users under that amount. To find flights for your dates, click here.

• How do most travelers feel about American Airlines?

  Cheapflights users who travel with American Airlines (a popular airline from Boston to London Heathrow Airport) have rated them a 6.8/10. This rating comes from 29 reviews. If you are looking to travel BOS-LHR, search your dates above.

Currently, the most affordable month to book a American Airlines flight from Boston to London Heathrow Airport in November, with an average price of $653. Conversely, traveling with American Airlines from Boston to London Heathrow Airport in June will be the most expensive, with an average cost of $1,150. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).