Deal Brief
BOS to LIS is currently available as a round-trip redemption for 48,200 points plus $157.77 in taxes. This option prices in Economy through flyingblue+aeroplan, with strong seat availability.
Route: Best Round-Trip Deal: Boston to Lisbon
Route code: BOS -> LIS + LIS -> BOS
Program: Flying Blue / Air Canada Aeroplan (Mixed)
Airline: Delta Air Lines
Trip style: 4 days
Travel window: Multiple
Available dates:
August 2026 (4) cash price unavailable
- AUG-22 to AUG-26
- AUG-23 to AUG-27
- AUG-24 to AUG-28
- AUG-25 to AUG-29
October 2026 (1) cash price unavailable
- OCT-24 to OCT-28
November 2026 (1) cash price unavailable
- NOV-2 to NOV-6
Cash fares are approximate round-trip prices via Travelpayouts. Point value = (cash fare − taxes) ÷ points. flyingblue+aeroplan baseline: 1.3¢/pt.
Additional Deal Information
Data Last Refreshed
Quality Score Breakdown · 68/100
Absolute Cost
28 / 50
Seat Availability
10 / 10
Cabin Tier
0 / 10
Freshness
1 / 1
Destination Tier
0 / 8
Tax Efficiency 20% cash
12 / 18
Airline Product
0 / 7
Additional Flight Information
Outbound · BOS → LIS
Booked via Flying Blue
Airline: Delta Air Lines
Return · LIS → BOS
Booked via Air Canada Aeroplan
Mixed booking: This round trip uses two different loyalty programs for the best combined price.
The booking program is where you redeem points. Different programs may price the same flight differently.