£20 Cheap flights to Belgium

Belgium is full of notable places to explore, many with significant historical value to the region and the world. Some of the most popular landmarks in Belgium are Grand Place, Place Sainte-Catherine, Square - Brussels Meeting Centre, and Brussels City Hall, among many more.

Flying into Brussels Bruxelles-National Airport is typically the best way to visit Grand Place, since it is the closest airport to the area.

You can find flights to Belgium from 5 airlines. If you’re unsure which to fly with, consider booking your flight with Ryanair, Brussels Airlines or British Airways as these are the most popular among our users. Ryanair is the most favoured with 50% of momondo travellers booking flights with this airline.

Brussels Bruxelles-National is the most popular airport in Belgium to fly to, with 89% of all users travelling to Belgium opting to take a flight into this airport. If you’re interested in staying in Brussels, which is the city in Belgium that is closest to Brussels Bruxelles-National, then be sure to check momondo for cheap flight deals.

On average, a flight to Belgium will cost £634 per ticket. We’ve had users find flights to Belgium for as low as £22, however. If you’re unable to find a plane ticket for £22, but manage to find one for £370 or less, then this is still a great deal. Keep in mind that flight costs vary depending on where you fly from, what time of year you travel, and what airline you fly with.

The best day of the week to fly to Belgium is Friday due to prices being at their lowest. Flying out on a Saturday should be a backup plan since this day tends to be less expensive as well. Tuesday, on the other hand, is the most expensive day to fly to Belgium.

Prices for flights to Belgium are updated daily.

The number of operators available for flights to Belgium is 20 as of August 2026.

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to Belgium.

The required travel and health documents for your Belgium trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belgium. We recommend that you seek guidance from your airline or a reliable third party such as IATA.