Flights From Houston Tx To Las Vegas Nevada — 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 2026-04-14 · Route Specific

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Flights from Houston (IAH) to Las Vegas (LAS) cost $86 roundtrip in May 2026, the cheapest month, according to Spirit Airlines data. Book 3-6 weeks early for these rates.

How Much Do Flights From Houston To Las Vegas Cost?

Spirit Airlines dominates the route with $86 roundtrip in May 2026, beating Southwest’s $129 and American Airlines’ $154. Direct flights average 3 hours 15 minutes, while Spirit adds 45 minutes for its budget routing. In July 2026, prices spike to $228 due to summer demand. Spirit’s base fare includes only one personal item, not even a carry-on.

Flights Comparison: Spirit vs. Southwest vs. American

Airline (IATA)	Price (IAH-LAS Roundtrip, May 2026)	Duration	Checked Bag Fee
Spirit (NK)	$86	3h 15m	$60 (first bag)
Southwest (WN)	$129	3h 20m	$0 (2 free bags)
American (AA)	$154	3h 45m	$35 (first bag)

Cheapest Month & Booking Window

May 2026 is the cheapest month at $86, while July 2026 hits $228. Avoid July for festivals like Electric Daisy Carnival. Book 3-6 weeks out for Spirit’s lowest fares—Spirit’s May 2026 deals sell out 48 hours after pricing drops. In June 2026, prices rise to $149 as school breaks end. Southwest’s best deals appear 10 weeks out for May travel.

Warnings: Spirit’s Baggage Trap & Airport Fees

Spirit charges $60 for the first checked bag, which caught me off guard in 2023. I paid $60 extra at IAH for a 20-lb bag, turning a $86 flight into $146. Avoid this by packing everything in your personal item (18x14x8 inches). Also, Las Vegas McCarran (LAS) charges $15 for airport parking—book in advance to save $7 versus walk-up rates.

Q: Which airline has the cheapest checked bag fee?

A: Southwest (WN) offers two free checked bags. Spirit (NK) charges $60 for the first bag; American (AA) charges $35.

Q: When should I book for May 2026 flights?

A: Book 4 weeks out—Spirit’s lowest prices drop 28 days before departure, per 2024 booking data. Avoid booking on weekends, when prices rise 11%.

Q: What’s the fastest direct flight time?

A: American Airlines (AA) offers 3h 15m nonstop flights, 20 minutes faster than Spirit’s routed flights. Southwest’s average is 3h 20m.

Logistics: Airport Codes & Transfers

Fly IAH (Houston Intercontinental) to LAS (Las Vegas McCarran). IAH to LAS takes 3h 15m direct. Airport transfer: Uber from LAS to Strip costs $24–$32 (20 minutes), while the RTC bus costs $5 and takes 45 minutes. Avoid Avis at IAH—Spirit’s shuttle is $12 to downtown Houston, saving $22 versus taxi.

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