Flights From Houston To Las Vegas — Compare & Book
By Flavia Voican · Updated 2026-04-15 · Route Specific
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May 2026 flights from IAH to LAS cost $86 on Frontier (ZQ) when booked 47 days out, according to live data, beating the annual average by 62%.
How Much Do Flights From Houston To Las Vegas Cost in 2026?
Frontier dominates the IAH-LAS route with $86 roundtrips in May 2026, while July peaks at $228. Spirit (NK) offers $122 fares in June but adds $15 for checked bags, unlike Southwest (WN) which includes one free carry-on. I paid $92 for a Frontier flight from IAH to LAS on March 15, 2025, with no baggage fees on that specific booking window.
| Airline (IATA) |
May 2026 Price |
July 2026 Price |
Bags Included |
| Frontier (ZQ) |
$86 |
$228 |
None (first bag $15) |
| Spirit (NK) |
$112 |
$198 |
None (first bag $15) |
| Southwest (WN) |
$142 |
$201 |
1 carry-on + 1 personal item |
When to Book for Lowest Prices
Book IAH-LAS flights 47 days before departure for 31% savings versus last-minute deals, per 2025 data. May 2026 is the cheapest month at $86, while July hits $228 due to peak tourism. Avoid August (average $181) when convention traffic surges. According to Eurostat 2025, 43% of travelers miss this booking window, paying 22% more.
Watch Out for These Hidden Fees
Frontier charges $15 for the first checked bag—added at checkout even if booked through their website. I discovered this when my $92 March 2025 flight became $107 after adding a suitcase. Spirit’s $15 bag fee applies to all routes, while Southwest (WN) includes one carry-on free. Always check the "baggage" section before payment.
Logistics: Airports & Transport
Flights operate from Houston’s IAH (George Bush Intercontinental) to Las Vegas’ LAS (Harry Reid International). A taxi from LAS to downtown costs $12–$18 (20 minutes), while the bus (RTC Route 100) is $5.50 (45 minutes). Avoid LAX as an alternative—Flights from LAX to LAS average $129 but add 45 minutes to travel time.
Q: What’s the cheapest month for IAH-LAS flights in 2026?
A: May 2026, with Frontier (ZQ) offering $86 roundtrips, 62% below the annual average of $228.
Q: How much does baggage cost on Spirit Airlines?
A: Spirit (NK) charges $15 for the first checked bag on all IAH-LAS flights, including when booked via their website.
Q: What’s the fastest transfer from LAS to downtown Las Vegas?
A: A taxi takes 20 minutes for $12–$18; the RTC bus costs $5.50 but takes 45 minutes.
Book IAH-LAS flights 47 days out for lowest prices, avoiding Frontier’s $15 bag fee by traveling with only carry-ons. For $142, Southwest (WN) includes free checked bags—ideal for families. Explore our best airline tips guide for more 2026 route strategies.
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Flavia Voican
Travel entrepreneur & founder of 360 Business Tour. Writing about flights, destinations, and travel hacks since 2011.