AirHint found the following cheapest return flights from Indianapolis (IND) to Madrid (MAD) in May 2026 (see full year).
Return flights
| 08 May - 15 May | Iberia | ||
| 13 May - 20 May | Iberia | ||
| 14 May - 25 May | Iberia | ||
| 03 May - 10 May | Iberia | ||
| 14 May - 24 May | British Airways | ||
| 18 May - 25 May | Iberia | ||
| 28 May - 04 Jun | Iberia |
Also check the deals for one-way flights from Indianapolis to Madrid in May.
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