December is a high-demand month on transatlantic routes, so cheap flights from Dallas/Fort Worth International Airport (DFW) to Adolfo Suárez Madrid–Barajas Airport (MAD) are less common near Christmas and New Year. To find savings, search flexible dates in early December, look for midweek departures, and compare one-stop itineraries via European hubs like London (LHR), Paris (CDG), or Frankfurt (FRA). Use fare alerts, clear cookies or use incognito windows when searching, and check both major carriers and alliance partners for discounted partner fares. If your schedule is flexible, consider departing as early as the first two weeks of December or returning immediately after New Year's Day to capture lower midweek fares.
Tips
- Book 6–10 weeks ahead for the best December DFW–MAD fares.
- Search flexible dates and nearby airports (e.g., consider departing from nearby airports or arriving in a nearby Spanish city and taking a short connection).
- Set fare alerts and compare nonstop vs. one-stop options; sometimes a single overnight in a European hub reduces cost.
- Fly midweek (Tuesday–Thursday) when possible to avoid weekend holiday surcharges.
- Use loyalty points or credit card transfer partners for December transatlantic redemptions.