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5 Shocking Updates On Des Moines International Airport (DSM) Expansion: New Routes, $600M Terminal & 2027 Debut

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Des Moines International Airport (DSM) is currently undergoing a monumental transformation, and the latest updates as of December 2025 confirm that the project is not only on schedule but is also dramatically reshaping the future of air travel for Iowans. The multi-phase, $600 million "Lift DSM" terminal expansion is well past its halfway point, promising a state-of-the-art facility designed to handle the region's rapidly increasing passenger traffic. This comprehensive overview details the most critical, up-to-the-minute developments, from infrastructure milestones to exciting new flight destinations.

The Des Moines Airport Authority Board has been aggressively moving forward with construction, approving the third phase of the new terminal project which extends its reach all the way to Fleur Drive. With a projected debut in early 2027, the new Des Moines International Airport will feature significantly expanded capacity and modern amenities, positioning DSM as a premier regional hub.

1. The $600 Million "Lift DSM" Terminal Expansion: A 2027 Vision

The cornerstone of the airport's overhaul is the ambitious "Lift DSM" project, a massive infrastructure investment that will completely replace the existing, aging terminal building. This is not a renovation; it is a full-scale replacement designed to meet the demands of a growing metropolitan area.

The project, which involves key partners like The Weitz Company and Turner Construction, has seen steady progress throughout 2025.

Key Features of the New DSM Terminal

  • Expanded Gate Capacity: The new facility will debut with a total of 18 aircraft gates, a significant increase that includes seven additional gates to serve more flights simultaneously.
  • Enhanced Security Checkpoints: Central security screening will be dramatically expanded to include eight screening lanes, designed to move passengers through the TSA process with greater speed and efficiency.
  • Modern Passenger Amenities: The new terminal will feature expanded concessions, modern seating areas, and a more intuitive, spacious layout.
  • New Parking & Skyway: A newly expanded parking garage is being built, which will be connected to the terminal via a convenient skyway bridge, improving the passenger experience significantly.

As of June 2025, construction had reached its halfway point, with the Des Moines Airport Authority Board having approved Phase 1B East and the third phase of the development. The momentum suggests the early 2027 opening date is firm.

2. Record-Breaking Nonstop Routes: Six New Destinations in 2025

The infrastructure expansion is being matched by a major boost in flight service, with the Des Moines International Airport announcing a record number of nonstop destinations. In 2025 alone, six new routes were added to the DSM roster, providing Iowans with unprecedented travel options.

This expansion in service is a direct result of increased partnerships with key carriers, particularly Allegiant Air and American Airlines.

New Nonstop Destinations Added in 2025

  • Los Angeles (LAX): American Airlines expanded its service with a new nonstop route to the West Coast hub, a major win for both business and leisure travelers.
  • Philadelphia (PHL): American Airlines also added service to this East Coast gateway, providing crucial connections to the Northeast.
  • Boston (BOS): Allegiant Air introduced a direct flight to this key New England city, significantly broadening the airport's reach.
  • Jacksonville, Florida (JAX): Allegiant Air added this popular Florida destination, catering to sun-seekers.
  • Gulfport/Biloxi, Mississippi (GUF): This new Allegiant route provides a direct link to the Gulf Coast.
  • Fort Myers/Punta Gorda, Florida (RSW): Another Allegiant route focused on connecting Iowa to the popular Florida travel market.

These additions, combined with existing routes, mean DSM now offers over 20 nonstop routes, with limitless connection possibilities worldwide.

3. Allegiant Air's Aggressive Expansion: More Florida, More Fun

Allegiant Air has cemented its role as a critical partner for DSM, focusing heavily on leisure travel and adding multiple routes beyond the initial 2025 announcements. The airline is clearly betting big on the Des Moines market, utilizing the new terminal's future capacity.

The airline's strategy involves adding service to popular leisure spots, many of which are seasonal or less frequently served by major carriers.

Future Allegiant Nonstop Routes from DSM

  • Sarasota/Bradenton, Florida (SRQ): Service is scheduled to begin in November 2025, providing another option for travel to Florida’s Gulf Coast.
  • Memphis, Tennessee (MEM): A new route launching in September 2025, opening up the historic music city to Iowans.
  • Key West, Florida (EYW): Service to the southernmost point in the continental U.S. is also slated to begin in September 2025.

Travelers can also expect continued service from major carriers like Delta and Southwest Airlines, maintaining a diverse portfolio of travel options from the heart of Iowa.

4. Current Airlines and Nonstop Destinations from DSM

The Des Moines International Airport serves as a vital transportation hub, partnering with several major airlines to offer a robust network of flights. The airport handles an average of 34 passenger flights daily to 35 nonstop destinations across 20 U.S. states.

The current roster of airlines ensures that travelers have a choice between low-cost carriers and full-service airlines for both domestic and international connections.

  • Allegiant Air: Focuses on leisure destinations like Las Vegas (LAS), various Florida cities (JAX, RSW, SRQ, EYW), and New England (BOS).
  • American Airlines (Oneworld): Offers service to major hubs like Dallas/Fort Worth (DFW), Chicago (ORD), Los Angeles (LAX), and Philadelphia (PHL).
  • Delta Air Lines (SkyTeam): Provides critical connections to hubs such as Atlanta (ATL), Detroit (DTW), and Minneapolis/St. Paul (MSP).
  • Southwest Airlines: A popular choice for non-stop flights to destinations like Las Vegas (LAS) and other key domestic cities.

5. The Economic Impact and Future of Des Moines Travel

The $600 million investment in the new terminal is not just about convenience; it represents a significant economic driver for the entire Des Moines metropolitan area and the state of Iowa. The Des Moines International Airport is a crucial gateway for business, tourism, and convention traffic.

The expanded capacity and modern infrastructure will allow DSM to attract even more airlines and new routes in the years following the 2027 opening, further boosting the region's connectivity. The ability to handle more passengers and larger aircraft is essential for the continued economic growth of the city.

With construction proceeding on schedule, the collaboration between the Des Moines Airport Authority, the construction firms, and the airlines promises a seamless transition to a new era of air travel. The Lift DSM project is a clear signal that Des Moines is ready to take its place on the national and international stage as a major travel destination.

5 Shocking Updates on Des Moines International Airport (DSM) Expansion: New Routes, $600M Terminal & 2027 Debut
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