Cheap flights from Boston or Washington DC to Lisbon, Portugal from only $336 roundtrip with Iberia.
Depart from:Boston: $336Washington DC: $336-$351
DEPART:Boston/Washington DC, USA
RETURN:Boston/Washington DC, USA
DATES:Availability from September 2021 to June 2022 (excluding Christmas/New Year)
Boston – Lisbon: $33615th-22nd Sep17th-24th Sep29th Sep – 6th Oct1st-8th Oct3rd-10th Oct13th-20th Oct27th Oct – 3rd Nov8th-15th Nov20th-27th Nov22nd-29th Nov24th Nov – 1st Dec3rd-10th Jan5th-12th Jan15th-22nd Jan17th-24th Jan19th-26th Jan29th Jan – 5th Feb31st Jan – 7th Feb2nd-9th Feb12th-19th Feb14th-21st Feb16th-23rd Feb2nd-9th Mar16th-23rd Mar26th Mar – 2nd Apr28th Mar – 4th Apr30th Mar – 6th Apr27th Apr – 4th May7th-14th May9th-16th May11th-18th May21st-28th May23rd-30th May25th May – 1st Jun4th-11th Jun6th-13th Jun8th-15th Jun
Washington DC – Lisbon: $336-$35117th-24th Sep7th-14th Oct17th-24th Oct21st-28th Oct23rd-30th Oct12th-19th Nov14th-21st Nov18th-25th Nov8th-15th Dec13th-20th Jan23rd-30th Jan27th Jan – 3rd Feb31st Jan – 7th Feb6th-13th Feb22nd Feb – 1st Mar24th Feb – 3rd Mar8th-15th Mar