Deal Brief
BOS to LIS is currently available as a round-trip redemption for 148,000 points plus $123.81 in taxes. This option prices in Business through united+aeroplan, with strong seat availability.
Route: Best Round-Trip Deal: Boston to Lisbon
Route code: BOS -> LIS + LIS -> BOS
Program: United MileagePlus / Air Canada Aeroplan (Mixed)
Airline: TAP Air Portugal
Trip style: 4 days
Travel window: Multiple
Available dates:
November 2026 (1) cash price unavailable
- NOV-23 to NOV-27
December 2026 (2) cash price unavailable
- DEC-7 to DEC-11
- DEC-30 to JAN-3
January 2027 (20) cash price unavailable
- JAN-4 to JAN-8
- JAN-5 to JAN-9
- JAN-9 to JAN-13
- JAN-12 to JAN-16
- JAN-13 to JAN-17
- JAN-14 to JAN-18
- JAN-15 to JAN-19
- JAN-16 to JAN-20
- JAN-17 to JAN-21
- JAN-19 to JAN-23
- JAN-20 to JAN-24
- JAN-21 to JAN-25
- JAN-22 to JAN-26
- JAN-23 to JAN-27
- JAN-24 to JAN-28
- JAN-25 to JAN-29
- JAN-26 to JAN-30
- JAN-27 to JAN-31
- JAN-28 to FEB-1
- JAN-30 to FEB-3
February 2027 (6) cash price unavailable
- FEB-1 to FEB-5
- FEB-2 to FEB-6
- FEB-3 to FEB-7
- FEB-4 to FEB-8
- FEB-5 to FEB-9
- FEB-7 to FEB-11
Cash fares are approximate round-trip prices via Travelpayouts. Point value = (cash fare − taxes) ÷ points. united+aeroplan baseline: 1.3¢/pt.
Additional Deal Information
Data Last Refreshed
Quality Score Breakdown · 85/100
Absolute Cost
42 / 50
Seat Availability
10 / 10
Cabin Tier
8 / 10
Freshness
1 / 1
Destination Tier
0 / 8
Tax Efficiency 6% cash
18 / 18
Airline Product
3 / 7
Additional Flight Information
Outbound · BOS → LIS
Booked via United MileagePlus
Return · LIS → BOS
Booked via Air Canada Aeroplan
Airline: TAP Air Portugal
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.