We noticed that you're using an unsupported browser. The Tripadvisor website may not display properly.We support the following browsers: Windows: Internet Explorer, Mozilla Firefox, Google Chrome. Mac: Safari.
We’ve searched 100s of deals recently found by travellers.*
Lisbon, PT (LIS)Washington DC, DC (WAS)
Wed, 28/2 - Sun, 3/3
Multiple Airlines - Roundtrip, Economy
US$464
Bonn, DE (CGN)Washington DC, DC (WAS)
Thu, 14/12 - Mon, 18/12
British Airways - Roundtrip, Economy
US$722
*Prices are based on round trip travel with returns between 1-21 days after departure. These are the best fares found by travellers who searched Tripadvisor and a select group of our fare search partners in the past 72 hours. Ticket prices and seat availability change rapidly and cannot be guaranteed.