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Cheap Flights from Houston to Las Vegas
Houston is served by two major airports — George Bush Intercontinental (IAH) and William P. Hobby (HOU) — and both connect to Las Vegas with nonstop service. IAH, located 25 miles north of downtown Houston, is United Airlines' second-largest hub in the world and offers the highest frequency of nonstop departures to Las Vegas. HOU, 7 miles southeast of downtown, is Southwest Airlines' Houston hub. The two airports are 40–50 minutes apart by car — which airport makes more sense depends entirely on where you are in Houston and which carrier's pricing works better for your trip. Neither is wrong; both are viable. This guide covers both.
Las Vegas — served by Harry Reid International Airport (LAS) — has two operating terminals that handle different carriers. Terminal 1 serves Southwest, Spirit, and Frontier. Terminal 3 serves United, Delta, American, and major international carriers. The terminals share baggage claim zones but have separate check-in areas and security checkpoints. Arriving at the wrong terminal with checked bags is a fixable but time-consuming problem — know yours before you land.
The Houston-to-Las Vegas corridor is one of the most price-competitive domestic routes in the Southwest. United's hub dominance at IAH means 4–6 daily nonstop departures, but Southwest's HOU service — with two free checked bags — keeps the competition genuine. Spirit and Frontier add ultra-low-cost pressure that keeps base fares reasonable year-round. For leisure travelers packing for a long Vegas weekend, the total-cost calculation (fare + bag fees + parking) almost always favors Southwest's HOU service over bare-bones Spirit fares from IAH once luggage is factored in.
Airlines Flying Houston to Las Vegas
| Airline | Departure Airport | Nonstop? | Departure Terminal | LAS Terminal | Avg. One-Way Fare | 1st Bag Fee |
|---|---|---|---|---|---|---|
| United Airlines | IAH | Yes | Terminal C | Terminal 3 | $89–$249 | $35 |
| Southwest Airlines | HOU | Yes | Main Terminal | Terminal 1 | $79–$229 | FREE (2 bags) |
| Spirit Airlines | IAH | Yes | Terminal D | Terminal 1 | $49–$139 | $39–$79 |
| Frontier Airlines | IAH | Yes | Terminal D | Terminal 1 | $55–$149 | $35–$75 |
| American Airlines | IAH | Via DFW | Terminal A/B | Terminal 3 | $120–$280 | $35 |
Flight Duration and Schedule
- IAH to LAS nonstop: Approximately 3 hours westbound. Return eastbound averages 3 hours 25 minutes against headwinds.
- HOU to LAS nonstop: Approximately 3 hours 5 minutes westbound. Similar return time.
- First departures from IAH: United often operates a 6:00 AM departure, ideal for arriving in Las Vegas by 7 AM local time and maximizing your day.
- Late-night options: Spirit frequently offers 8:00 PM–10:00 PM departures from IAH — useful for travelers coming straight from work.
- Daily frequency: United operates 4–6 nonstop departures from IAH daily. Southwest runs 4–5 from HOU. Combined, Houston–Vegas receives 10–12 nonstop flights per day.
- Busiest departure days: Thursday evening and Friday morning. These flights book earliest and price highest.
Monthly Fare Guide: Houston to Las Vegas Round-Trip
| Month | Avg. Round-Trip Fare | Season | Demand Level | Las Vegas Weather |
|---|---|---|---|---|
| January | $110–$200 | Low | Low-Medium | Cool, 38–57°F, dry |
| February | $100–$190 | Low | Low | Cool, 42–62°F, dry |
| March | $120–$220 | Shoulder | Medium (spring break) | Mild, 50–72°F |
| April | $110–$200 | Shoulder | Medium | Warm, 58–82°F |
| May | $120–$210 | Shoulder | Medium | Hot, 68–95°F |
| June | $140–$250 | Peak | High | Very hot, 80–108°F |
| July | $150–$270 | Peak | High | Extreme heat, 85–112°F |
| August | $130–$240 | Peak | High | Extreme heat, 83–109°F |
| September | $110–$200 | Shoulder | Medium | Hot, 70–98°F |
| October | $100–$185 | Shoulder | Low-Medium | Warm, 56–80°F |
| November | $110–$200 | Low | Low | Cool, 44–65°F |
| December | $120–$240 | Holiday | Medium-High | Cool, 38–58°F |
How to Get the Cheapest Houston to Las Vegas Flights
- Compare IAH and HOU separately: Southwest's HOU fares don't always appear prominently on Google Flights. Open Southwest.com separately and compare total cost including bags before booking from IAH on any other carrier.
- Factor in checked bag fees from day one: A family of four checking bags each way adds $280–$560 to IAH carrier fares. Southwest's two free bags per person eliminates this cost entirely from HOU.
- Avoid major convention and fight weekends: CES (January), NAB (April), Electric Daisy Carnival (May), NFL Draft (April/May), and any major boxing or UFC card at T-Mobile Arena spike fares by $80–$150 above baseline. Check the Las Vegas events calendar before selecting dates.
- Fly Tuesday–Wednesday: Mid-week fares on IAH–LAS average $60–$100 cheaper than Friday departures. Las Vegas mid-week hotel rates are also 30–50% lower than weekend rates — the savings compound.
- Book United's basic economy carefully: On a 3-hour flight, United basic economy restricts you to one personal item under the seat (no overhead bin). On a leisure trip with any carry-on bag, upgrading to standard economy for $20–$35 more is worth it.
- Use the price calendar on Google Flights: The monthly fare calendar view identifies the cheapest travel dates at a glance. On IAH–LAS, a 2–3 day shift in departure can save $40–$80 without changing your plans significantly.
- Book return flights on Sunday night rather than Sunday afternoon: Sunday afternoon return flights from Las Vegas are the most expensive single departure of the week on this route. Sunday evening flights (7 PM+) price $30–$60 lower on average.
Houston Airport Guide — IAH and HOU
George Bush Intercontinental Airport (IAH):
- Five terminals (A, B, C, D, E) connected by an underground train (IAH Subway) running every 3 minutes
- United Airlines: Terminal C (primary domestic hub) and Terminal E (international)
- Spirit and Frontier: Terminal D
- Parking: Economy Lot A/B runs $14/day with free shuttle. Terminal garages cost $22–$30/day
- IAH to downtown Houston: 35–55 minutes by rideshare ($35–$55), 45–70 minutes by METRO Bus 102 ($1.25)
William P. Hobby Airport (HOU):
- Single terminal with Concourses A, B, C, and D — compact and easy to navigate
- Southwest Airlines: All gates. Check-in opens 24 hours before departure
- Parking: Economy Lot runs $12/day. Hourly garage costs $2/30 min, max $25/day
- HOU to downtown Houston: 20–35 minutes by rideshare ($18–$28), or METRO Bus 40 ($1.25)
Harry Reid International Airport (LAS) — Arrival Guide
- Terminal 1: Southwest, Spirit, Frontier. Older terminal but recently renovated. Slot machines begin at the gate area — this is Las Vegas, after all.
- Terminal 3: United, Delta, American, and international carriers. Newer, larger, with better dining options and the main automated people mover connecting to the baggage claim and rental car center.
- Baggage claim: Both terminals have ground-level baggage carousels. Budget 15–25 minutes from landing to bags on busy weekend afternoons.
- Rideshare pickup: LAS has a dedicated rideshare pickup lot on the first floor of the parking structure — accessible via a free shuttle from both terminals. Not at the curbside. This surprises many first-time visitors.
- Rental cars: All rental agencies operate from the Rental Car Center, accessible by free shuttle from both terminals (7–12 minute ride).
Getting from LAS Airport to the Las Vegas Strip
| Method | Cost | Time | Best For |
|---|---|---|---|
| Rideshare (Uber/Lyft) | $14–$25 | 10–20 min | Most travelers |
| Taxi | $18–$35 | 10–20 min | Groups, those without app |
| RTC Bus (Route 109) | $2–$6 | 20–40 min | Budget travelers, Strip hotels |
| Hotel shuttle | Free–$15 | 15–30 min | Resort hotel guests |
| Rental car | $35–$80/day | 10 min | Day trips to Hoover Dam, Red Rock, Grand Canyon |
Top Things to Do in Las Vegas
- The Las Vegas Strip: 4.2 miles of hotels, casinos, and entertainment from Mandalay Bay to the Stratosphere. Walk it at night when the neon is fully lit — the Bellagio fountains (free, runs every 15–30 min), the Venetian canals (free to walk), and the Mirage volcano (free, runs 8 PM–11 PM nightly) are all no-cost experiences.
- Red Rock Canyon National Conservation Area: 17 miles west of the Strip. The 13-mile scenic loop road costs $15/vehicle (no entrance fee for cyclists or pedestrians). Calico Hills and the Keystone Thrust hiking trails offer some of the most dramatic geology in Nevada with almost no crowd pressure on weekday mornings.
- Fremont Street Experience: Downtown Las Vegas, 5 miles from the Strip. The 1,500-foot LED canopy light show runs hourly after dark over a pedestrian mall. No cover, lower table minimums at the casinos below, and a more local atmosphere than the Strip.
- Neon Museum (The Boneyard): 770 Las Vegas Blvd N. Preserves 200+ historic neon signs from demolished casinos and hotels. Daytime tours are $20–$25; guided evening tours with projected light displays run $25–$28. One of the few genuinely original cultural experiences in Las Vegas.
- Hoover Dam: 35 miles southeast via US-93. The dam tour costs $30 (powerplant access included). The visitor center is free. The structural scale only becomes apparent standing on the dam itself — photos never fully communicate the 726-foot drop to the Colorado River below.
- Arts District (18B): Charleston Boulevard between Main and Commerce streets. First Friday gallery walk runs monthly with free admission to 20+ studios. Independent restaurants, vintage shops, and working artist spaces that operate daily regardless of the First Friday calendar.
- Zion National Park (Utah): 2.5 hours northeast via I-15. $35/vehicle entrance fee. The Angels Landing trail and the Narrows river hike through Zion Canyon are two of the most visually striking walks in the entire US National Park system. Worth a full day trip from Las Vegas.
Las Vegas Travel Tips
- Las Vegas hotels charge a daily resort fee ($30–$50/night) not included in advertised room rates. Factor this into total accommodation cost when comparing hotel prices.
- The Las Vegas Monorail runs along the east side of the Strip from MGM Grand to the Convention Center for $5/ride — faster than walking between the south and north Strip during peak evening hours.
- Drink prices on the Strip run $14–$20 for cocktails. Fremont Street casinos price drinks $6–$10. Off-Strip bars near the Arts District price comparably to any normal city bar.
- Heat in July and August regularly exceeds 110°F. Outdoor Strip walking between noon and 5 PM becomes genuinely unsafe for extended periods. Plan outdoor activities for morning (before 10 AM) or evening (after 7 PM).
- Las Vegas is in the Pacific Time Zone — same as Los Angeles, two hours behind Houston's Central Time. Account for the time difference when scheduling return flights and post-trip commitments.
FAQs – Flights from Houston to Las Vegas
Quick answers to the questions travelers ask us the most.
Should I fly from IAH or HOU to Las Vegas?+
IAH offers more carriers and departure times including United, Spirit, and Frontier. HOU via Southwest includes two free checked bags and is closer to downtown Houston. Compare total costs including bags — for most leisure travelers with luggage, HOU/Southwest is cheaper overall.
How long is the flight from Houston to Las Vegas?+
Nonstop from IAH or HOU to LAS takes approximately 3 hours westbound. The return eastbound flight averages 3 hours 20–25 minutes.
Which Las Vegas terminal does Southwest use?+
Southwest uses Terminal 1 at Harry Reid International. United, Delta, and American use Terminal 3. Spirit and Frontier also use Terminal 1.
When are Houston to Las Vegas flights cheapest?+
January, February, and October offer the lowest fares. Avoid major convention weekends (CES, NAB, Electric Daisy Carnival), major fight cards, and the week between Christmas and New Year's. Mid-week (Tuesday–Wednesday) departures save $60–$100 versus Friday.
Is summer a good time to visit Las Vegas from Houston?+
Airfares are higher in summer and Las Vegas temperatures regularly exceed 110°F in July–August. If you go in summer, plan outdoor activities before 10 AM and after 7 PM. Spring (March–May) and fall (September–October) offer the best weather and moderate pricing.