United Airlines Expands Colombia Flights With New Cartagena Routes

[Chicago, USA – July 2, 2026] — As United Airlines expands Colombia flight network operations, the carrier has announced new nonstop flights connecting Houston and Washington Dulles with Cartagena. Launching December 17, 2026, the year-round service will operate four times weekly, improving travel links between the United States and Colombia's Caribbean coast. Aviation planners indicate that the flights are scheduled to capture peak winter vacation traffic.

Capital and Mid-West Gateways Expand South American Reach

The new year-round services will depart from two primary U.S. hubs, George Bush Intercontinental Airport (IAH) and Washington Dulles International Airport (IAD). Operating on Tuesdays, Thursdays, Saturdays, and Sundays, the routes will utilize Boeing 737 narrowbody aircraft. This service makes Cartagena the carrier's third destination in Colombia, complementing existing routes to Bogotá (BOG) and Medellín (MDE).

Industry observers note that the Washington Dulles service marks the first nonstop connection between the U.S. capital region and Colombia's Caribbean coastline. The Houston route improves travel options for passengers connecting from West Coast and Midwestern cities. Both services are scheduled to align with domestic flight schedules, reducing layover times at U.S. gateways.

Competitive Shifts in the U.S.-Colombia Aviation Market

The launch of these routes comes during a period of consolidation in the U.S.-Colombia aviation market. Following the operational exit of Spirit Airlines in early 2026, total nonstop seating capacity between the two nations declined slightly. Our analysis of the flight data indicates that total two-way seats dropped by 2.7 percent, from 3.9 million in summer 2025 to 3.8 million in summer 2026.

Despite this capacity reduction, legacy carriers are expanding operations to capture market share. Avianca has grown its presence, increasing summer 2026 capacity by 17.3 percent to nearly 1.9 million seats. American Airlines also expanded its operations, growing capacity by 6.1 percent to approximately 742,000 seats. United Airlines recorded a 7 percent capacity adjustment during this cycle, primarily due to scheduling adjustments on its Houston-Medellín route.

Key Takeaways of the United Airlines Cartagena Launch

Route Commencements: United Airlines launches nonstop flights to Cartagena (CTG) starting December 17, 2026.
Hub Gateways: Flights depart from Houston (IAH) and Washington Dulles (IAD) four times weekly.
Aircraft Deployment: Scheduled flights will utilize Boeing 737 passenger jets.
Colombia Network: Cartagena joins Bogotá and Medellín as United's third Colombian destination.
Market Consolidation: Spirit Airlines' exit from the market opens route options for legacy operators.
Capacity Trends: Overall U.S.-Cartagena flight capacity remains down 20.4% year-on-year.

Regional Airport Dynamics and Capacity Changes

While United's new routes add seat capacity, overall U.S.-Cartagena flight availability remains below 2025 levels. Due to Spirit Airlines' withdrawal, total seating capacity to Cartagena fell by 20.4 percent during the summer 2026 season. Miami remains the largest international gateway to Cartagena, supported by flights from American Airlines, Delta Air Lines, and JetBlue Airways.

Regional performance across other Colombian airport gateways remains varied. Bogotá recorded a 1.8 percent growth in seat capacity, cementing its role as the nation's primary international hub. Barranquilla experienced the strongest regional growth, surging 47.6 percent due to expanded Florida services. Conversely, Medellín recorded a 14.1 percent decline in seat capacity during the same period.

Tourism Appeal Drives Aviation Investment

Cartagena continues to establish itself as a primary leisure destination in South America. Recognized as a UNESCO World Heritage site, the city draws international visitors to its colonial walled city, beachfront resorts, and local museums. The addition of nonstop flights from Houston and Washington Dulles improves access for travelers seeking warm-weather winter vacations.

Aviation planners suggest that direct international flights support local tourism infrastructure, including hotels, tour agencies, and transport providers. The direct routes also appeal to corporate business travelers and remote workers who prioritize short flight durations. By offering year-round service, the airline expects to capture consistent passenger volumes across both peak and off-peak seasons.

Data Table

United Airlines Winter 2026 Cartagena Flight Schedule

Flight Route	Departure Hub	Arrival Gateway	Operating Days	Aircraft Deployed	Launch Date
Houston (IAH) to Cartagena	Houston (IAH)	Cartagena (CTG)	Tuesday, Thursday, Saturday, Sunday	Boeing 737	Dec 17, 2026
Washington to Cartagena	Washington (IAD)	Cartagena (CTG)	Tuesday, Thursday, Saturday, Sunday	Boeing 737	Dec 17, 2026

U.S.-Colombia Aviation Market Performance Indicators

Market Performance Metric	Summer 2025	Summer 2026	Year-on-Year Percentage Change
Total Two-Way Seats	3.9 million	3.8 million	-2.7%
Total Flight Frequencies	21,386 flights	21,112 flights	Slight decline
Spirit Airlines Seating Capacity	497,000 seats	83,000 seats	Sharp reduction before shutdown

Airline Seating Capacity and Growth Trends (Summer 2026)

Airline Carrier	Summer 2026 Capacity (Seats)	Year-on-Year Capacity Change	Primary Hubs Served
Avianca	Nearly 1.9 million	+17.3%	Bogotá, Miami, New York JFK
American Airlines	About 742,000	+6.1%	Miami, Dallas/Fort Worth
United Airlines	About 315,000	-7%	Houston, Newark, Washington Dulles

Colombian Airport Destination Capacity Trends (Summer 2026)

Destination Airport	Summer 2026 Capacity Trend	Primary International Connecting Route
Barranquilla (BAQ)	+47.6% growth	Miami – Barranquilla direct corridor
Bogotá (BOG)	+1.8% growth	Miami, New York, Houston hub routes
Medellín (MDE)	-14.1% decline	Fort Lauderdale, Miami, New York
Cartagena (CTG)	-20.4% decline	Miami, Fort Lauderdale, New York JFK

Why This Matters

Our analysis of the flight data indicates that the exit of budget carriers changes international routing strategies for legacy airlines. Because Spirit Airlines withdrew from the U.S.-Colombia corridor, United, American, and Avianca have expanded capacity on high-demand leisure routes. Consequently, legacy carriers capture premium tourist traffic, improving yield margins on South American operations.

The launch of the Washington Dulles route highlights how airlines target underserved metro areas to establish regional monopolies. By providing the first nonstop connection from the U.S. capital to Cartagena, United appeals to business and diplomatic travelers who previously required transfers. This schedule design demonstrates the value of direct routing in attracting high-value corporate travel segments.

Industry Outlook

Expect international travel agencies to launch winter holiday packages for Cartagena following the December route launches. Airport planners at Rafael Núñez International will prepare terminal facilities to handle the twin arrival flights from Houston and Washington Dulles on Tuesdays and Thursdays. Additionally, competitors will monitor booking trends to determine if further capacity increases are needed for the 2027 summer season.

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Disclaimer: This article is strictly for informational and travel planning purposes. Route details, launch dates, aircraft types, and seating capacities are based on airline filings available at the time of publication. Flight paths, booking availability, entry requirements, and airport slot allocations are highly dynamic and subject to change. Travelers should check flight statuses before booking.