AirHint found the following cheapest return flights from Chicago (ORD) to Brussels (BRU) in May 2026 (see full year).
Return flights
| 06 May - 14 May | TAP | ||
| 13 May - 21 May | TAP | ||
| 06 May - 15 May | TAP | ||
| 17 May - 25 May | Scandinavian Airlines | ||
| 07 May - 14 May | Turkish Airlines | ||
| 15 May - 22 May | Icelandair | ||
| 25 May - 01 Jun | jetBlue |
Also check the deals for one-way flights from Chicago to Brussels in May.
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