Going to the wrong terminal at Harry Reid International Airport (LAS) can cost you a Southwest flight. Southwest flies exclusively from Terminal 1, and knowing where to check in, drop bags, and reach your gate saves you real time on travel day. This guide covers everything you need before you arrive.
Quick Answer
Southwest Airlines uses Terminal 1 at Harry Reid International Airport (LAS) in Las Vegas. Check in and drop bags at Terminal 1, then go through security to reach your gate. Southwest flights depart from Concourse C and some B gates. Gate assignments can change, so confirm yours on the airport screens and in the Southwest app before you head to the gate.
Key Takeaways
- Southwest uses Terminal 1 at LAS.
- Most Southwest flights depart from Concourse C (and some B gates) in Terminal 1.
- Southwest checked-bag fees apply to many fares booked on or after May 28, 2025 — check your booking before you travel.
- Southwest now uses assigned seating on all flights, effective January 27, 2026.
- A free shuttle connects Terminal 1 and Terminal 3.
Which Terminal Does Southwest Use at LAS?
Southwest Airlines operates out of Terminal 1 at Harry Reid International Airport. Check in and drop bags at Terminal 1. You can confirm the current airline-terminal list on the airport’s official airlines by terminal page.
After security, Southwest flights depart from the C gates and sometimes the B gates in Terminal 1. Always check your gate on the airport departure boards, since gates can change up to departure.
Southwest Check-In and Bag Fees at LAS
Most travelers check in on the Southwest app or website before arriving at the airport. At Terminal 1, use kiosks or staffed counters for bag tags and bag drop.
Bag fees: For many reservations booked (or voluntarily changed) on or after May 28, 2025, checked-bag fees apply. Southwest charges $35 for a first checked bag and $45 for a second checked bag on many fares, with exceptions based on fare type and Rapid Rewards status. Review Southwest’s checked baggage policy before you travel.
Warning: Bag fee rules vary by fare type and booking date — confirm your specific allowance before you reach the check-in counter.
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Southwest assigned seating: What to Expect Now
Southwest moved to assigned seating for all flights starting January 27, 2026. You’ll receive a seat assignment when you book or when you check in. Follow the boarding group and seat number shown on your boarding pass.
Food, Shops, and Seating in Terminal 1
Terminal 1 has food options, coffee, and retail stores for snacks and travel items. Charging stations and Wi-Fi are available throughout the terminal.
Go to your gate area first, then grab food at a spot nearby. That way you stay close if your gate changes before departure.
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Shuttle Between Terminal 1 and Terminal 3
Terminal 1 and Terminal 3 are separate buildings at LAS. If you need to switch terminals, take the airport’s free courtesy shuttle bus. It runs about every 20 to 30 minutes. Check the airport’s inter-terminal shuttle page for current pickup locations and schedules.
Pro tip: Build in at least 30 minutes if you need to transfer between terminals — the shuttle runs on a schedule and stops between pickup points.
Quick Tips for Your Travel Day
- Arrive at least two hours before a domestic flight and three hours before an international one.
- Check your gate on the airport departure boards and in the Southwest app — gates can change close to departure.
- Know your bag allowance before you reach the check-in counter.
- Have your boarding pass ready with your assigned seat and boarding group visible.
Brief History: Southwest at Las Vegas
Southwest launched service to Las Vegas on January 31, 1982. The airport’s name changed from McCarran International Airport to Harry Reid International Airport in 2021.
Frequently Asked Questions
What terminal is Southwest Airlines at Las Vegas Airport?
Southwest Airlines operates from Terminal 1 at Harry Reid International Airport (LAS) in Las Vegas.
Which gates does Southwest use at LAS?
Southwest usually uses the C gates and some B gates in Terminal 1. Your exact gate can change, so check the airport departure boards and your Southwest app before heading to your gate.
Does Southwest still offer free checked bags?
It depends on your fare and booking date. For many reservations booked or voluntarily changed on or after May 28, 2025, bag fees apply. Check your specific booking before you travel.
Does Southwest use assigned seating now?
Yes. Southwest switched to assigned seating for all flights starting January 27, 2026. You’ll get a seat assignment when you book or check in, and your boarding pass will show your group and seat number.
Is there a shuttle between Terminal 1 and Terminal 3 at LAS?
Yes. LAS runs a free courtesy shuttle bus between Terminal 1 and Terminal 3, with service about every 20 to 30 minutes. Check the airport’s website for current pickup locations.
Plan Ahead and You’ll Be Fine
Terminal 1 is your starting point for every Southwest flight at Harry Reid International Airport. Check your gate in the Southwest app before you leave home, confirm your bag allowance in advance, and give yourself enough time at the airport. A few minutes of preparation on the front end makes the whole travel day easier.
References
- Airlines by Terminal — Harry Reid International Airport
- Checked Baggage Policy — Southwest Airlines
- Inter-Terminal Shuttle — Harry Reid International Airport