The cheapest Madrid to Antigua return flight on the radar right now is €800, flying with Iberia + British Airways via one or more connections. It covers departures in November 2026, and every dated link below opens that exact MAD–ANU search on Skyscanner. At 37% under the €1,279 we normally record here, it is one of the strongest MAD–ANU fares in our index. Across 52 recorded checks it has ranged between €675 and €1,673. Our sampling points to November 2026 as the cheapest month to fly Madrid to Antigua.
Prices are re-checked against Skyscanner automatically, and every one shows when it was last confirmed, so nothing here is older than it looks. Not flying from Madrid? We track 42 other departure cities for Antigua, listed at the foot of this page.
Prices like this tend to vanish fast. If it has gone when you look, try the days either side of the dates above, since Madrid to Antigua is often still worth booking within a day or two of the fare we found.