Flights From Houston To Las Vegas — Compare & Book

Written by Flavia Voican, Travel Researcher at 360 Business Tour

Independent European travel research. Verified data, updated for 2026

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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