Cheap Swiss International Air Lines flights Barcelona (BCN) to Belgrade (BEG)

Finding cheap one-way SWISS flights from BCN to BEG on Expedia is a breeze — just filter by "Price (lowest to highest)." Or check out our affordable return fares from $201 for your next exciting vacation.**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.

Check for SWISS flights from BCN to BEG about one month before you want to leave. The cheapest time to book an international flight is usually 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. No matter your itinerary or ticket type, the best day to book international airfare is usually Sunday. Friday is often the most expensive. Passengers who book on a Sunday can save an average of 17% compared to those who book on a Friday.**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 departures from BCN to BEG with SWISS, filter your search by "Morning" and "Early Morning." Choosing an early flight usually means cancellations are less likely.**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.

SWISS makes flying from BCN to BEG enjoyable with a 4-star airline rating and a rewarding loyalty program. You even have the chance to collect points with Swiss Miles & More. Don't forget to join Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.