How long does it take to fly to Liège?

Average flight duration from Washington, D.C. to Liège depends on which airport you fly into and out of. Flying from Washington, D.C. to Brussels Bruxelles-National Airport is 10h 05m on average, while flying from Baltimore to Brussels Bruxelles-National Airport is 10h 40m on average. Brussels Bruxelles-National Airport is the most popular airport in Liège.

When did momondo last update prices for flights from Washington, D.C. to Liège Bierset Airport?

Prices for flights from Washington, D.C. to Liège Bierset Airport were last updated today.

How old do you have to be to fly from Washington, D.C. to Liège Bierset Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Liège Bierset Airport.

What documentation or ID do you need to fly to Liège Bierset Airport?

The travel and health documents you'll need for your trip to Liège Bierset Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Liège Bierset Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$624 Cheap Flights from Washington, D.C. to Liège in 2025

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Cheap round-trip flights

These are some of the best round-trip flight deals from Washington, D.C. to Liège that have been recently found on momondo from popular airlines, departing in the coming months.

WAS-LGG

3909 mimulti-stop

LGG-WAS

3909 mimulti-stop

Multiple Airlines

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How to get the cheapest flight ticket from Washington, D.C. to Liège

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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Other information

What airlines fly to Liège?

United Airlines, Scandinavian Airlines and Aer Lingus are the top three most popular airlines that fly to Liège from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Liège. Keep in mind that there are 10 different airlines that fly to Liège on a routine basis, so you have a few additional options to choose from.

When to book flights from Washington, D.C. to Liège

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Liège according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. to Liège (WAS to LGG) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Liège

Fastest flight time	19h 45m
Direct flights	None
Airports in Liège	1 airport

The fastest flight from Washington, D.C. to Liège takes 19h 45m

There are no direct flights from Washington, D.C. to Liège. Popular non-direct route for this connection is Washington, D.C. Dulles Intl Airport - Liège Bierset Airport.

There is 1 airport near Liège: Liège Bierset (LGG)

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How far is Washington, D.C. to Liège Bierset by plane?
The distance between Washington, D.C. and Liège Bierset is about 3915.0 mi.
When did momondo last update prices for flights from Washington, D.C. to Liège Bierset Airport?
Prices for flights from Washington, D.C. to Liège Bierset Airport were last updated today.
How old do you have to be to fly from Washington, D.C. to Liège Bierset Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Liège Bierset Airport.
What documentation or ID do you need to fly to Liège Bierset Airport?
The travel and health documents you'll need for your trip to Liège Bierset Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Liège Bierset Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Liège?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Liège. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to Liège with flexible booking policies on momondo?

Flights from Washington, D.C. to Liège with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Washington, D.C. to Liège?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Liège.

I’m not ready to book a flight from Washington, D.C. to Liège right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Liège flights. All you need is a valid email address and we will do the rest; it is that quick and easy.