Cheap flights from Chicago O'Hare Intl Airport to Belgium from $253

In general, April is the cheapest month to fly from Chicago O'Hare Intl Airport to Belgium. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $610. If you are unable to visit Belgium during the month of April, then departing from Chicago O'Hare Intl Airport during the month November is also very affordable. Most momondo users find prices during this month for around $632.

Our data shows that Tuesday is the least expensive day to fly to Belgium. Tickets to fly out on this day can be as low as $1,139. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,434. These prices are subject to change though, so be sure to set up a Price Alert for flights to Belgium.

Our most recent data shows that the best time of day to fly to Belgium is in the evening. Flights from Chicago O'Hare Intl Airport to Belgium during this time can be as low as $1,234. Flights to Belgium are more costly in the afternoon, with an average ticket price of $1,286. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Chicago O'Hare Intl to Brussels Bruxelles-National for the best Chicago O'Hare Intl - Belgium flight prices

You are more likely to see cheaper flights to Belgium from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Belgium for around $843 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belgium from Chicago O'Hare Intl Airport for as low as $591 on momondo.

There are 3 cabin classes available to choose from on Chicago O'Hare Intl Airport to Belgium flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

4 flights are operational daily from Chicago O'Hare Intl Airport to Belgium as of September 2026. The most popular departure time for this route is 6:00PM, with 100% of flights per day taking off in the evening.

As of September 2026, there are 32 flights per week flying from Chicago O'Hare Intl Airport to Belgium. The most common day of the week flights depart is Thu, with 16% of flights taking off on this day.