Low-budget Frontier Airlines has added 20 new routes across the U.S. and Latin America, and that includes eight new routes out of George Bush Intercontinental Airport (IAH).

The additional routes are part of Frontier's goal to become the top low-fare carrier in the top 20 U.S. metro areas. What better way to do that than to add routes.

The six new routes from IAH are Baltimore, Detroit, Fort Lauderdale, Guatemala City, New Orleans, Philadelphia, San Salvador (El Salvador), and San Pedro Sula (Honduras), with fares starting at $29.

Frontier Airlines CEO Barry Biffle says that "As industry capacity adjusts, we want to ensure consumers in those markets continue to have affordable flight options."

Tickets for the flights go on sale starting September 2.

Some of the flights, including IAH to Fort Lauderdale, start in November. The rest begin in December 2025 or February 2026, including IAH to New Orleans. Some to international destinations are still pending per government approval.

The eight IAH flights are as follows:

• Houston (IAH) to/from Baltimore (BWI): 3 flights per week, beginning November 20, 2025.
• Houston (IAH) to/from Detroit (DTW): 3 flights per week, beginning November 20, 2025.
• Houston (IAH) to/from Fort Lauderdale (FLL): 1 flight weekly, beginning November 22, 2025.
• Houston (IAH) to Guatemala City, Guatemala (GUA): 3 flights per week, beginning December 18, 2025
  
• Houston (IAH) to/from New Orleans (MSY): 2 flights per week, beginning February 13, 2026
  
• Houston (IAH) to/from Philadelphia (PHL): 3 flights per week, beginning November 21, 2025.
  
• Houston (IAH) to San Salvador, El Salvador (SAL): 3 flights per week, beginning December 19, 2025
  Houston (IAH) to San Pedro Sula, Honduras (SAP): 1 flight weekly, beginning December 20, 2025
• Houston (IAH) to San Pedro Sula, Honduras (SAP): 1 flight weekly, beginning December 20, 2025

The full list of cities and new flights includes:

Baltimore (BWI) to Cancun (CUN)
Baltimore (BWI) to/from Fort Lauderdale (FLL)
Baltimore (BWI) to/from Houston (IAH)
Baltimore (BWI) to/from New Orleans (MSY)
Charlotte (CLT) to/from Detroit (DTW)
Charlotte (CLT) to/from Fort Lauderdale (FLL)
Dallas (DFW) to/from Fort Lauderdale (FLL)
Dallas (DFW) to/from New Orleans (MSY)
Detroit (DTW) to Cancun (CUN)
Detroit (DTW) to/from Fort Lauderdale (FLL)
Detroit (DTW) to/from Houston (IAH)
Detroit (DTW) to/from Miami (MIA)
Detroit (DTW) to/from New Orleans (MSY)
Fort Lauderdale (FLL) to/from Chicago (ORD)
Houston (IAH) to/from Fort Lauderdale (FLL)
Houston (IAH) to Guatemala City, Guatemala (GUA)
Houston (IAH) to/from New Orleans (MSY)
Houston (IAH) to/from Philadelphia (PHL)
Houston (IAH) to San Salvador, El Salvador (SAL)
Houston (IAH) to San Pedro Sula, Honduras

Other upgrades
Frontier also has additional fleet and route expansion on tap for 2026, along with major investments in loyalty and product upgrades, Biffle says.

“Frontier is not just about delivering low fares — we’ve made major enhancements, from product upgrades to the most rewarding loyalty program, and investments in technology and service, as part of The New Frontier,” he says.