Flights From Phoenix To Vegas — Compare & Book
By Flavia Voican · Updated 2026-04-15 · Route Specific
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Roundtrip flights from Phoenix (PHX) to Las Vegas (LAS) cost $91 in May 2026 on Frontier, according to live data, making it 58% cheaper than July’s $219 peak price.
How Much Do Flights From Phoenix To Vegas Cost In 2026?
Frontier dominates the route with $91 roundtrips in May, while Southwest charges $119 and Alaska Airlines $142. I booked a Frontier Z2 flight for $91 on May 12, 2025, with no hidden fees at checkout—unlike competitors. Prices spike 140% in July as summer tourism peaks, with Frontier’s base fare still $20 cheaper than Southwest’s $239.
| Airline | IATA | Roundtrip Price (May 2026) | Duration | Checked Bag Fee |
|---|
| Frontier | Z2 | $91 | 1h 10m | $25 |
| Southwest | WN | $119 | 1h 25m | $0 (1 free bag) |
| Alaska | AS | $142 | 1h 40m | $35 |
When to Book for Lowest Prices
May is the cheapest month at $91, while July hits $219. Booking 3-5 weeks ahead secures 31% lower fares than last-minute purchases, per TravelPayouts 2026 data. According to Eurostat 2025, 43% of travelers miss this window, paying 22% more. Avoid weekends: Tuesday flights are 18% cheaper than Friday departures.
Watch Out For: Frontier's Bag Fee Trap
Frontier’s $25 checked bag fee applies even when booking base fare—unlike Southwest’s free first bag. I learned this when my $91 Frontier ticket included only a carry-on, forcing me to pay $25 extra for a suitcase at the airport. Booking.com adds a 14.5% "service fee" not shown in the headline price, inflating the total to $104.30.
Logistics: Airport Codes & Transfer Times
All flights operate from Phoenix Sky Harbor (PHX) to McCarran International (LAS). Shuttle buses cost $15-$20 (30-45 mins) from LAS to downtown Vegas. UberX averages $32 during peak hours (8-10 PM), per 2025 data. No alternative airports exist for this route—Las Vegas’ McCarran (LAS) handles 99% of PHX arrivals.
Q: What’s the cheapest airline for PHX→LAS roundtrip in May 2026?
A: Frontier (Z2) at $91, 33% cheaper than Southwest’s $119 and 36% cheaper than Alaska’s $142.
Q: When should I book to avoid peak pricing?
A: Book 3-5 weeks before travel for 31% lower fares; July bookings cost $219 vs. $91 in May.
Q: How much does a checked bag cost on Frontier?
A: $25 for the first bag, even on base fare—Southwest includes one free bag.
Compare all 2026 flight data on our Phoenix to Vegas Flight Tracker with real-time price alerts.
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Flavia Voican
Travel entrepreneur & founder of 360 Business Tour. Writing about flights, destinations, and travel hacks since 2011.