Award availability from Boston to London Heathrow is wide open for May 4, 2026, with business class seats bookable through Air Canada Aeroplan for 70,000 miles. The taxes and fees come in at a reasonable $107, making this a solid redemption for transatlantic premium cabin travel.
This is notably better than the typical going rate for this route. Aeroplan usually prices Boston-London business class around 110,000 miles, so you're saving roughly 40,000 miles per ticket. For a family of two adults, that's 80,000 miles back in your pocket for future trips.
Availability appears strong at the moment, but spring travel to Europe tends to book up as the date approaches. If your schedule works for early May, it's worth locking this in sooner rather than later.
One practical note: Aeroplan miles transfer instantly from Amex Membership Rewards, Chase Ultimate Rewards, and Capital One, so you can top off your balance if needed right before booking.
How to book
Search and book directly through Aeroplan at aircanada.com.