AirHint found the following cheapest return flights from Chicago (MDW) to Madrid (MAD) in April 2026 (see full year).
Return flights
| 21 Apr - 05 May | Delta | ||
| 12 Apr - 25 Apr | Delta | ||
| 04 Apr - 19 Apr | Delta | ||
| 04 Apr - 11 Apr | Delta | ||
| 06 Apr - 02 May | Virgin Atlantic | ||
| 23 Apr - 30 Apr | Delta | ||
| 23 Apr - 16 May | Virgin Atlantic |
Also check the deals for one-way flights from Chicago to Madrid in April.
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