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Southwest doesn't currently fly to Mexico City, but you can build a connecting trip through Southwest's US network. Fly to Houston, Dallas, or another hub, then connect on Aeromexico, United, or Volaris. Mundo Trip pulls together the best combined routings so you don't have to piece it together yourself.
Cheapest Months to Travel
May and June see lower demand as the rainy season starts. September is historically the cheapest month for Mexico travel. Connecting itineraries from the US are 20% to 30% cheaper during these windows.
Peak Travel Seasons to Avoid
Christmas, New Year's, Easter (Semana Santa), and the Day of the Dead period (late October/early November) are peak travel times. Summer months also see higher prices due to US vacation schedules.
Best Time to Book
Book connecting itineraries 2 to 3 months ahead for the best pricing. This route requires coordination between Southwest and another carrier, so early planning gives you better connection options.
Midweek Advantage
Tuesday and Wednesday departures are cheaper on both the Southwest leg and the connecting Mexico City flight. Avoid Friday and Sunday travel for the lowest fares.
Time Difference to Keep in Mind
Mexico City is on CST (UTC-6) year-round since Mexico dropped daylight saving in 2022. It matches US Central Time in winter. From March to November, it's 1 hour behind CDT. East Coast travelers face a 1 to 2 hour difference.