$1,641 Cheap United flights Bilbao (BIO) to Liberia (LIR)

Scoring cheap one-way United Airlines flights from BIO to LIR from $1,641 on Expedia is a breeze — just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly round-trip fares from $2,088 for your next exciting getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Landing the best United Airlines deals from BIO to LIR often comes down to booking at the right time. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. Better yet, you can pocket 17% on average by buying your fare on a Sunday rather than a Friday, which is often the most expensive day to book.* It's a good idea to start searching for flights about one month before your departure date.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

To find the earliest departure from BIO to LIR with United Airlines, sort your results by "Morning" and "Early Morning." Booking an early flight generally means you'll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

A rewarding loyalty program and the chance to rack up points through United Mileage Plus are the start of the reasons to depart from BIO to LIR with United Airlines. Plus, when you sign up to Expedia's free One Key™ program, you can earn OneKeyCash™* on top of United Airlines's loyalty program earnings. It's yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.