$462 Cheap United flights from Houston to Madrid (IAH to MAD)

Make sure you visit the Covid-19 Travel Advisor to learn if there are any current travel advice reports and quarantine requirements in place in Madrid–Barajas Airport when jet-setting from IAH.

The information printed on tickets often differs between airlines. If you’re flying from George Bush Intercontinental Airport (IAH) to Adolfo Suarez Madrid-Barajas Airport (MAD) with United Airlines and you can’t find your terminal details, contact the airline.

You won’t find any direct flights from IAH to Madrid Airport with United Airlines. Be ready to make at least one stopover if you need to stick to this airline and route.

You can wander wisely from the second you climb on board. With a United Airlines flight from IAH to MAD lasting an average of 10 hours and 46 minutes, you’ll want to have a few survival strategies to depend on. Some toiletries and earplugs should be among the basics tucked away in your carry-on.

You’ll find roughly 7 United Airlines flights each week connecting IAH to MAD.

For more info about changing your flight to Madrid Airport, please visit our Customer Service Portal.

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.