Average price (all airlines)
Delta offers 3 flights from Boston to Lisbon for under $700. Prices vary by date and time. To see all prices and select your dates, click here.
Cheapflights users who travel with Delta (a popular airline from Boston to Lisbon) have rated them a 7.3/10. This rating comes from 1,849 reviews. If you are looking to travel BOS-LIS, search your dates above.