Cheap Flights from Boston (BOS) to Liege (LGG)

Popular airlines from Logan International Airport (BOS) to Liege (LGG)

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Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Liege Airport (LGG) cost?
Lock in a cheap one-way flight or cheap return flight from Logan Intl. Airport (BOS) to Liege Airport (LGG) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Logan Intl. Airport (BOS) to Liege Airport (LGG)?
is the cheapest month to fly from BOS to LGG. Traveling during quieter months is often the key to finding a great deal.
What is the cheapest airline that flies from Logan Intl. Airport (BOS) to Liege Airport (LGG)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest BOS to LGG flight.
How many flights per day from Logan Intl. Airport (BOS) to Liege Airport (LGG)?
There aren't any daily nonstop flights from Logan Intl. Airport (BOS) to Liege Airport (LGG). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from BOS to LGG?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on a number of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Liege Airport (LGG)?
Book a flight from Logan Intl. Airport (BOS) to Liege Airport (LGG) that takes off before 3 PM to reduce the likelihood of delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Liege Airport (LGG) last-minute?
Booking your plane ticket from BOS to LGG shortly before your getaway is typically more expensive. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a BOS to LGG flight and hotel package?
Securing a BOS to LGG flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our impressive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Liege Airport (LGG)?
Generally, it's possible to reschedule or cancel your BOS to LGG flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Logan Intl.
Destination airport
Liege
Distance
3517 mi

Book with confidence

Book with confidence

Boston to Liege Flights

The cheapest times to fly from Boston to Liege

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to Liege are during the month of . You can find some of the cheapest flights from Boston to Liege with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boston to Liege

Sunday is one of the best days to book for cheap flights from Boston to Liege: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boston to Liege

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to Liege in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to Liege flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to Liege airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Boston to Liege Flights

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*Available to One Key members.