Deal Brief
BOS to LIS is currently available as a round-trip redemption for 175,000 points plus $453.03 in taxes. This option prices in Business through delta+flyingblue, with 7 seats available. This is 14% below the previously tracked price.
Route: Best Round-Trip Deal: Boston to Lisbon
Route code: BOS -> LIS + LIS -> BOS
Program: Delta SkyMiles / Flying Blue (Mixed)
Airline: Delta Air Lines
Trip style: Two week (Saturday-Monday)
Travel window: JUL-4 to JUL-20
Available dates:
July 2026 (1) cash price unavailable
- JUL-4 to JUL-20
Cash fares are approximate round-trip prices via Travelpayouts. Point value = (cash fare − taxes) ÷ points. delta+flyingblue baseline: 1.3¢/pt.
Additional Deal Information
Data Last Refreshed
Previous Price
203,500 pts
↓ 14%
Quality Score Breakdown · 76/100
Absolute Cost
35 / 50
Seat Availability
10 / 10
Cabin Tier
8 / 10
Freshness
0 / 1
Destination Tier
0 / 8
Tax Efficiency 17% cash
13 / 18
Airline Product
3 / 7
Additional Flight Information
Outbound · BOS → LIS
Booked via Delta SkyMiles
Airline: Delta Air Lines
Return · LIS → BOS
Booked via Flying Blue
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.