Deal Brief
IAD to LIS is currently available as a round-trip redemption for 148,000 points plus $124.17 in taxes. This option prices in Business through united+aeroplan, with strong seat availability.
Route: Best Round-Trip Deal: Washington, DC to Lisbon
Route code: IAD -> LIS + LIS -> IAD
Program: United MileagePlus / Air Canada Aeroplan (Mixed)
Trip style: 13 days
Travel window: Multiple
Available dates:
January 2027 (12) cash price unavailable
- JAN-5 to JAN-18
- JAN-6 to JAN-19
- JAN-7 to JAN-20
- JAN-11 to JAN-24
- JAN-13 to JAN-26
- JAN-14 to JAN-27
- JAN-16 to JAN-29
- JAN-17 to JAN-30
- JAN-18 to JAN-31
- JAN-23 to FEB-5
- JAN-24 to FEB-6
- JAN-26 to FEB-8
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 · IAD → LIS
Booked via United MileagePlus
Return · LIS → IAD
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.