Guide to Master Your Southwest Flight from Houston Hobby Airport

July 20, 2026

Book a Southwest flight out of Houston and there's a good chance you never even considered the other Houston airport. Southwest Airlines operates HOU Hobby as one of its largest bases, the fifth-largest airport in the airline's entire network, and it controls the vast majority of Hobby's 30 gates across both concourses. Once you understand how Southwest shapes this airport, from the west-side check-in counters to the international gates behind Customs, the whole trip gets easier to plan. This guide covers the gate-level and policy-level details, and it’s just one piece of our broader HOU airport guide if you want the full picture of the airport.

Southwest Airlines planes at HOU

Why Southwest Dominates Houston Hobby Airport

Southwest carries most of Hobby's passengers, and the airport handled roughly 14 million travelers in 2023 with Southwest operating the bulk of the routes. Hobby is Houston's oldest commercial airport, sitting about seven miles southeast of downtown, and Southwest has effectively rebuilt it around its own operation.

The clearest proof is the 2015 expansion, when Southwest spent an estimated $156 million to build the 280,000-square-foot West Concourse, add a parking garage, reorganize the security checkpoint, and enlarge its own check-in counter. International service launched the same day construction finished, October 15, 2015, opening flights to Mexico and Central and South America.

Southwest is still growing its investment in Houston Hobby. A $470 million West Concourse expansion broke ground in November 2024 and is scheduled to finish in summer 2027, adding seven new gates (six domestic, one international), a new baggage handling system, additional carousels, and a canopy connecting the Red Garage to the departures curb. When it's done, the West Concourse will hold 12 gates, and every one of them will be Southwest's.

Which Concourse Does Southwest Use at HOU?

Southwest uses both concourses, but most of its gates are in the Central Concourse, which holds gates 20–32 and 40–51. The West Concourse's five gates (1–5) are reserved for Southwest as well, primarily for international departures, though they also absorb overflow domestic flights on busy days.

Hobby's single-terminal layout works in your favor here. Ticket counters, the checkpoint, and all 30 gates sit in one building, so there are no terminal transfers or airport trains which can be a genuine advantage over larger airports. The two concourses connect via a long corridor with moving walkways, and walking from Gate 51 at the far end of Central to Gate 5 at the far end of West takes roughly 12 minutes at a steady pace.

One practical note if your gate changes at the last minute: because the security checkpoint sits in the middle of the terminal and feeds both concourses, you won't re-clear security to switch sides. Make sure you check the monitors before you settle in at a restaurant on the wrong end of the terminal

Southwest International Flights from Hobby: Gates, Customs & What to Expect

Southwest's international flights from Hobby depart from the West Concourse, which contains the Federal Inspection Services area for customs and immigration. If your boarding pass shows Gates 1 through 5, that's where you're headed. Federal Inspection Services for international arrivals operate from 9:00 am to 9:00 pm, and Hobby became the first Texas airport with full biometric entry and exit for international travelers back in February 2020. Arrival processing here moves faster than most people expect.

Southwest Airlines’ route map skews heavily toward beach destinations. Their booking pages list international service from Hobby to Mexico, Puerto Rico, Jamaica, Costa Rica, Belize, the Dominican Republic, Aruba, the Bahamas, Turks and Caicos, Cuba, the U.S. Virgin Islands, and St. Maarten. Cancun is the most popular, with 74 weekly flights (an average flight time of 2 hours 10 minutes) and nonstop service three times daily Monday through Friday. Industry analysis using Cirium data also shows that San Jose del Cabo, San Jose (Costa Rica), Puerto Vallarta, Liberia, and Belize City among the top routes.

Know Hobby's limits, though. For Europe, Asia, or anything beyond Latin America and the Caribbean, you'll be flying out of George Bush Intercontinental instead. You can review entry requirements for international destinations through U.S. Customs and Border Protection before you fly. If you're traveling with children on an international departure, the 24-hour play area near Gate 4 sits right by Southwest's international gates. Our guide to kids' activities at HOU covers it all in detail.

Southwest Check-In, Baggage, and Security Tips Specific to HOU

Southwest check-in at Hobby is on the west side of the main terminal on Level 2. All other airlines use the east side. When you walk in from the garage or curb, head left and you'll find the counters Southwest expanded during the 2015 project. Digital bag check during or after online check-in can save you a counter stop entirely.

Baggage rules worth knowing before you pack

Southwest's baggage policy changed on May 28, 2025, ending the historic free-bags model. Current rules:

First checked bag costs $35 and the second $45 on Basic, Choice, and Choice Preferred fares
Free bags remain for select travelers: two for A-List Preferred members and Business Select customers, one for A-List members, and a first free bag for Rapid Rewards Credit Cardmembers
Active-duty military with valid ID check bags free
Checked bags max out at 62 inches and 50 pounds; oversized bags cap at 80 inches and overweight at 100 pounds
Carry-ons can measure up to 24 x 16 x 10 inches (wheels and handles included) with no weight limit, plus a personal item up to 16.25 x 13.5 x 8 inches
Strollers and FAA-approved car seats check free at the curb, counter, or gate; small pets travel in approved carriers with fees starting at $125

Prices are subject to change, so verify current rates on Southwest's official website.

Security at the central checkpoint

The Main Terminal checkpoint runs 3:45 am to 11:00 pm, with TSA PreCheck lanes open 3:45 am to 8:45 pm. Expedited screening also extends to DoD members, adults 75 and older, and children 12 and under. CLEAR operates Sunday through Friday 4:30 am to 8:00 pm and Saturday until 7:00 pm. As of May 7, 2025, everyone 18 and older needs a REAL ID-compliant license or another TSA-accepted ID. Hours may change, so check the official website before visiting.

Boarding: the new system

As of January 27, 2026, Southwest uses assigned seating and numbered boarding positions in Groups 1 through 8 instead of the old A/B/C lineup. Most fares let you pick a seat at booking; Basic fares get a seat assigned at check-in unless you hold tier status or a Rapid Rewards credit card. At the gate, you'll see alternating boarding lanes with digital screens showing which group is boarding. Everyone on a reservation of nine or fewer boards in the same group, cardmembers board no later than Group 5, and anyone needing to preboard for a seating or medical-device reason should talk to a gate agent before boarding starts.

How Southwest's Schedule at HOU Should Shape Your Parking and Arrival Timing

Southwest's dense schedule creates predictable crunch times at Hobby's single checkpoint. With routes like San Antonio running 151 weekly flights and Nashville at 156, the morning bank of departures stacks up fast. Peak hours from 7-9am and 3-6 pm can push regular security lines to 30–45 minutes or more, while off-peak lanes typically clear in 10-15 minutes. PreCheck usually moves through in 5-10 minutes even when it's busy.

Houston Airports advises arriving two hours before domestic flights and three hours before international departures. The extra hour on international trips accounts for the West Concourse's customs procedures. With TSA PreCheck, you can usually cut a domestic arrival to about 90 minutes.

Build parking into that math. The Red and Blue Garages sit within walking distance of the terminal. The Blue Garage connects via a sky bridge on the third terminal level, and the EcoPark economy lot runs a complimentary shuttle. EV drivers will find Blink stations in the Red Garage Level 2 valet area and ChargePoint stations in the Blue Garage Level 2, Row D. Off-airport, The Parking Spot 1 sits 1.1 miles out and is fastest coming from I-45, while The Parking Spot 2 is 0.8 miles away and easier from the Sam Houston Tollway or Telephone Road, with rates starting at $6.50/day and door-to-door shuttle service on every stay.

Planning Your Full HOU Trip: Parking, Timing, and the Bigger Airport Picture

The HOU-versus-IAH decision usually resolves itself if you're on Southwest. Hobby is the better fit for Southwest flyers, anyone near downtown or southern Houston, travelers heading to Latin America or the Caribbean, and people who simply prefer a smaller airport. It's about seven miles from downtown (while IAH's roughly 23 miles north), and the single-terminal design means no train rides between check-in and your gate. IAH remains the choice for legacy-carrier hubs, wider international networks, or complex connections.

A few realities to plan around: Hobby's only lounge is the USO near Gate 44, restricted to active military, and there are no paid lounges or sleeping pods. If you're facing hours between flights, our rundown of layover activities at HOU covers how to fill the time on both concourses. Picking someone up? The free cell phone waiting lot at 7600 Airport Boulevard, just before the airport entrance, beats circling the arrivals curb.

Frequently Asked Questions

Which concourse does Southwest use at Houston Hobby Airport?

Southwest uses both concourses, with most of its gates in the Central Concourse (gates 20–32 and 40–51). The five West Concourse gates (1–5) are reserved for Southwest, mainly for international flights, with occasional domestic overflow. A corridor with moving walkways links the two.

Does Southwest fly internationally out of Houston Hobby?

Yes. Hobby is Southwest's largest international operation, launched October 15, 2015, the day the West Concourse opened. International flights depart from Gates 1–5, where the Federal Inspection Services facilities handle customs and immigration.

What are the international destinations Southwest serves from HOU?

Southwest's booking pages list flights from Hobby to Mexico, Puerto Rico, Jamaica, Costa Rica, Belize, the Dominican Republic, Aruba, the Bahamas, Turks and Caicos, Cuba, the U.S. Virgin Islands, and St. Maarten. Cancun leads with 74 weekly flights averaging about 2 hours 10 minutes. Routes to Europe or Asia require flying from IAH instead.

How early should I arrive at HOU for a Southwest flight?

Plan on two hours for domestic flights and three hours for international departures. With TSA PreCheck, about 90 minutes usually works for domestic trips. Add a buffer during the 7–9am and 3–6pm peaks, when security lines run longest.

Does Southwest have a dedicated check-in area at Houston Hobby?

Yes. Southwest check-in occupies the west side of the main terminal on Level 2, while every other airline uses the east side. The counters were expanded during Southwest's 2015 project, and digital bag check during or after online check-in can skip the counter altogether.

What is Southwest's baggage policy for flights out of HOU?

As of May 28, 2025, Southwest charges $35 for the first checked bag and $45 for the second on Basic, Choice, and Choice Preferred fares. Free bags still apply for A-List Preferred and Business Select (two bags), A-List members (one bag), Rapid Rewards Cardmembers (first bag), and active-duty military with valid ID. Bags must stay under 62 inches and 50 pounds. Verify current fees on Southwest's official site.

Are there TSA PreCheck lanes available for Southwest passengers at Hobby?

Yes. PreCheck lanes at the central checkpoint operate 3:45 am to 8:45 pm and typically clear in 5 to 10 minutes even during busy periods. Expedited screening also extends to DoD members, adults 75 and older, and children 12 and under. Hours may change, so check before you fly.

How does Southwest's boarding process work at Houston Hobby?

Since January 27, 2026, Southwest boards by numbered positions in Groups 1 through 8 with assigned seating. Gate areas use alternating boarding lanes with digital screens showing the current group instead of stanchions. Everyone on a reservation of nine or fewer boards together, and cardmembers board no later than Group 5.

Is HOU or IAH better for Southwest flights from Houston?

HOU is almost always the answer for Southwest, since the airline bases most of its Houston operation there. Hobby is also about seven miles from downtown versus IAH's 23, with a single terminal and no train transfers. IAH makes sense for legacy carriers, long-haul international routes, or connections.

How long does security typically take at Houston Hobby for Southwest travelers?

Regular lanes generally take 10 to 15 minutes off-peak. During the 7–9 am and 3–6 pm rushes, waits can stretch to 30–45 minutes or more, while TSA PreCheck usually clears in 5 to 10 minutes. The single central checkpoint feeds both concourses.

What parking options are closest to the Southwest terminals at HOU?

The Red and Blue Garages are within walking distance of the terminal, with the Blue Garage connected by a sky bridge on the third terminal level. The EcoPark surface lot offers a complimentary shuttle, and The Parking Spot's two locations sit 0.8 and 1.1 miles away with rates from $6.50/day and door-to-door shuttles. Rates change, so verify current pricing before you park.

Does Southwest's international terminal at HOU require extra check-in time?

Yes. Plan for three hours instead of the domestic two, since international procedures at the West Concourse take longer. Hobby's full biometric entry and exit systems help speed processing, but customs documentation and international bag check still add time you shouldn't cut close.