✈️ Flight Guide: Chicago (ORD) → Las Vegas (Any)

May features several notable events that increase demand on the route between Chicago O'Hare International Airport (ORD) and Las Vegas (All Airports) (LASA). In Las Vegas, large-scale events like Electric Daisy Carnival (EDC) and Memorial Day weekend activities draw high visitor numbers and push up fares and hotel rates. Chicago hosts spring festivals in early May that can influence outbound seat availability. If traveling in May, especially around EDC or Memorial Day weekend, book flights and hotels early, and verify event dates when purchasing tickets.

The best time to fly from Chicago O'Hare International Airport (ORD) to Las Vegas (All Airports) (LASA) in May is mid-week (Tuesday–Thursday) and early morning departures. Early May weekdays generally offer the lowest fares and shorter lines at security. Avoid flying on or immediately before Memorial Day weekend (late May) when demand spikes and prices climb. For those seeking Las Vegas nightlife and shows, evening arrivals work well, but book early to secure tickets and pool access for holiday weekends.

Tips

• Book 3–8 weeks in advance for the best May fares.
• Choose early-morning flights to reduce the chance of weather delays at ORD.
• If traveling on Memorial Day weekend, consider arriving mid-week to avoid peak pricing.

Nonstop flights from Chicago O'Hare International Airport (ORD) to Las Vegas (All Airports) (LASA) are the fastest option, typically 3.5–4 hours door-to-door. Connecting itineraries can be cheaper or open more scheduling options but add layover time and potential for delay. Common connection airports include Denver International Airport (DEN), Phoenix Sky Harbor International Airport (PHX), and Dallas/Fort Worth International Airport (DFW). If your priority is saving time and minimizing risk of missed connections in May—especially during event weekends—opt for nonstop service.

United Airlines, American Airlines, Delta Air Lines and Southwest Airlines all serve the Chicago to Las Vegas market with varying service patterns. United offers frequent nonstop service from Chicago O'Hare International Airport (ORD) with robust loyalty benefits for MileagePlus members. American provides competitive schedules and connections through Dallas/Fort Worth International Airport (DFW). Delta may offer one-stop options via Salt Lake City or Minneapolis. Southwest commonly provides lower base fares and free two-checked-bags policy but may operate more flights from Chicago Midway; check specific itineraries for availability from Chicago O'Hare International Airport (ORD). Compare seat selection, change fees, and included baggage when booking for May.

May weather varies: Chicago O'Hare International Airport (ORD) departures can bring cool mornings and sudden spring storms, while Las Vegas (All Airports) (LASA) is warm and dry. Pack layered clothing, breathable fabrics and sun protection for Las Vegas. Use TSA PreCheck for faster security at ORD and consider reserving airport parking ahead of time for May holidays. For peak May events, pre-book shows, airport transfers and pool access to avoid last-minute price spikes. Keep digital and physical copies of reservations and check airline apps for gate changes.

Nonstop flights from Chicago O'Hare International Airport (ORD) to Las Vegas (All Airports) (LASA) typically take about 3 hours 30 minutes to 4 hours. In May, expect multiple daily nonstop departures: early morning flights (6:00–9:00 AM) ideal for avoiding weather and airport congestion, mid-day options (11:00 AM–2:00 PM), and evening departures (5:00–9:00 PM). Chicago operates on Central Daylight Time (CDT) in May (UTC−5) while Las Vegas uses Pacific Daylight Time (PDT) (UTC−7), so the clock difference is two hours — a 9:00 AM departure from ORD often arrives around 10:30 AM PDT after accounting for flight time and timezone change. For the most accurate and up-to-date schedules, check airline timetables and airline mobile apps the week of travel.

To secure cheap flights from Chicago O'Hare International Airport (ORD) to Las Vegas (All Airports) (LASA) in May, search 3–8 weeks in advance and target Tuesday–Thursday departures for lower fares. Use fare comparison sites and set price alerts with keywords such as 'ORD to LASA May deals' and 'discount Chicago to Las Vegas May nonstop.' Consider flexible date searches that include nearby departure cities like Milwaukee or Indianapolis for broader fare options. Sign up for airline newsletters from United Airlines, American Airlines and Delta Airlines for flash sales; also compare connecting routes through Denver International Airport (DEN) or Phoenix Sky Harbor International Airport (PHX) if nonstop fares are high. When booking, check baggage fees and bundle options (basic economy vs main cabin) to reveal true trip cost.

Tips

• Use flexible dates +/- 3 days to surface cheaper itineraries during May.
• Book early for Memorial Day weekend; otherwise mid-May midweek often has the best prices.
• Compare nearby airports served by Chicago O'Hare International Airport (ORD) and consider Midway (Chicago Midway International Airport) for alternate pricing.
• Use airline miles or credit card travel portals to reduce out-of-pocket costs.