Submit feedbackComplete travel information for your October journey
October departures from Chicago O'Hare International Airport (ORD) present a strong balance of lower shoulder-season fares and reliable scheduling. Travelers flying ORD to Ontario International Airport (ONT) should expect moderate crowds, especially around Columbus Day and weekend sporting events. Use mobile check-in, check TSA wait times, and consider off-site parking deals to optimize your airport experience. Popular nearby cities served from ORD include Chicago (downtown), Milwaukee, Gary, and Indianapolis, all of which feed connecting traffic to Southern California routes. Book flights 3–6 weeks in advance for the best October fares and sign up for fare alerts to capture discounts for nonstop or one-stop itineraries.
For domestic flights from Chicago O'Hare International Airport (ORD) in October, arrive at least 2 hours before departure to allow time for check-in, security screening, and possible fall travel crowds. Weekend and holiday weekends (Columbus Day) can be busier, so consider 2.5–3 hours for peace of mind. Check TSA wait times and airline mobile check-in to speed up your transit through the airport.
October at Chicago O'Hare International Airport (ORD) can see occasional delays due to seasonal weather shifts and increased holiday travel, but overall delays are moderate compared with winter months. Plan buffer time for missed connections and monitor flight status via your airline for real-time updates. Signing up for airline alerts and checking the FAA status page can help you avoid last-minute surprises.
Chicago O'Hare International Airport (ORD) offers economy lots, hourly and daily garages, and cell phone waiting areas; October often has good availability but popular terminals fill early on busy days. Consider off-site airport shuttles or pre-booked long-term parking deals to save money during peak October travel like Columbus Day weekend. Use the airport's parking map and reservation tools to lock in the best rates.
Airlines often add seasonal routes or increase frequencies from Chicago O'Hare International Airport (ORD) for fall events and sports fixtures in October, including additional service for MLB postseason travel and college football weekends. Check your airline's October schedule and consider booking early to secure lower fares and preferred departure times. Use fare alerts to catch limited-time seasonal seat sales.
October in Chicago is typically cool with average highs in the mid-50s to low-60s Fahrenheit and potential for rain or early snow; this can affect morning commutes to Chicago O'Hare International Airport (ORD) and occasionally disrupt flight schedules. Dress in layers for airport security and give extra time for ground transportation. Keep an eye on weather advisories and airport delay notifications before heading to ORD.
Arriving at Ontario International Airport (ONT) in October is ideal for travelers seeking warmer weather and easy access to Southern California attractions. Expect comfortable temperatures and increased passenger volumes tied to theme park events and Halloween festivities, so pre-book car rentals and airport transfers when possible. ONT serves as a convenient gateway to Anaheim (Disneyland), Los Angeles attractions, Riverside, and Palm Springs. If you're flying from Chicago O'Hare International Airport (ORD), consider flexible travel dates and compare nonstop and one-stop options to find the best October fares.
Ontario International Airport (ONT) offers car rental facilities, shared-ride shuttles, taxis, ride-hailing pickups, and regional bus connections year-round, with reliable service in October. Rental car counters are on-site and often have competitive autumn rates; pre-booking is recommended for holiday weekends. For quick transfers to nearby destinations like Anaheim (Disneyland), Los Angeles, Riverside, and San Bernardino, rideshares or express shuttles often offer the best balance of cost and convenience.
October brings increased passenger traffic to Ontario International Airport (ONT) due to seasonal events like Disneyland Halloween celebrations, Knott's Scary Farm in nearby Buena Park, and other Southern California fall festivals. While ONT is less congested than Los Angeles International, expect busier mornings and late afternoons on weekends. Book accommodations and car rentals early and allow extra time at ONT for baggage and ground transportation during peak October days.
October features notable events that affect travel patterns on the ORD→ONT route. In Chicago, October often includes the Chicago Marathon, Oktoberfest-style events, and MLB postseason travel demand. In Southern California, attractions like Disneyland Halloween events and Knott's Scary Farm in Buena Park drive increased traffic through Ontario International Airport (ONT). Regional fall festivals, college football weekends, and holiday lead-ins can create peak periods—plan flights and accommodations accordingly, and book early if your trip coincides with major events.
October is a shoulder season for ORD to ONT routes, making mid-October weekdays typically the cheapest and least crowded times to fly. Book 3–6 weeks ahead to capture the best October fares, and prefer early morning departures to reduce risk of delays. If you need flexibility, Tuesdays, Wednesdays, and Saturdays often offer lower prices; avoid peak holiday weekends like Columbus Day. Use price alerts and check multiple nearby airports (LAX) if you need additional schedule flexibility or lower fares.
Direct nonstop flights between Chicago O'Hare International Airport (ORD) and Ontario International Airport (ONT) save time but can be limited or seasonal in October. Connecting flights—often routed via Los Angeles (LAX), Phoenix (PHX), or Denver (DEN)—offer greater schedule flexibility and lower fares but increase total travel time and the risk of missed connections. Choose nonstop options when time is critical, and opt for one-stop itineraries to save money or access more favorable departure times. If connecting, allow 90–120 minutes for domestic connections to minimize stress.
United and American often provide reliable coast-to-coast connectivity and hub-based connections through Los Angeles (LAX) or Phoenix (PHX). Southwest and other low-cost carriers may offer competitive pricing and flexible change policies—especially valuable in October when plans can change for fall events. Delta typically provides solid customer service and SkyTeam connections. When comparing airlines for ORD→ONT in October, weigh total itinerary time, baggage fees, seat selection costs, and loyalty benefits. Use bundled fare comparisons to identify the best value for your travel needs and consider booking refundable or flexible fares for event-driven trips.
Pack for contrasting October climates: bring layers for cool Chicago mornings and lighter clothing for warm Southern California afternoons near Ontario International Airport (ONT). Allow extra time for transportation to Chicago O'Hare International Airport (ORD) during potential fall weather transitions and verify return travel arrangements in case of event-related crowds. Use TSA PreCheck or CLEAR to speed up security at ORD, pre-book car rentals at ONT, and keep electronic boarding passes handy. Consider travel insurance or refundable fares if your trip coincides with major October events.
Typical nonstop flight time between Chicago O'Hare International Airport (ORD) and Ontario International Airport (ONT) is approximately 4 hours to 4 hours 30 minutes when available; many travelers use one-stop options that range from 5.5 to 9+ hours total depending on layover length. In October, carriers tend to schedule flights during early morning (6:00–9:00), midday (11:00–14:00), and evening (16:00–21:00) windows to accommodate business and leisure demand. Common connection hubs for one-stop itineraries include Los Angeles (LAX), Phoenix (PHX), and Denver (DEN). For the most reliable schedules, book flights that allow a minimum 60–90 minute domestic connection buffer.
To score cheap flights from Chicago O'Hare International Airport (ORD) to Ontario International Airport (ONT) in October, search 3–6 weeks before departure and target midweek travel (Tuesdays and Wednesdays) for the lowest fares. Use fare comparison tools and set price alerts for primary keywords like 'cheap ORD ONT October' and variations like 'discount flights Chicago to Ontario.' Consider one-stop itineraries via Los Angeles (LAX) or Phoenix (PHX), which can be significantly cheaper than limited nonstop options. Low-cost carriers and seasonal schedule changes can produce flash sales, so act quickly when you see a fare that matches your budget.
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Book your economy class flight from Chicago (ORD) to Ontario (ONT)and save money on your travel. Compare all flight options to find the best deal for your october trip.
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Book your economy class flight from Chicago (ORD) to Ontario (ONT)and save money on your travel. Compare all flight options to find the best deal for your october trip.
Starting from $223
Book your economy class flight from Chicago (ORD) to Ontario (ONT)and save money on your travel. Compare all flight options to find the best deal for your october trip.
Starting from $253
Book your economy class flight from Chicago (ORD) to Ontario (ONT)and save money on your travel. Compare all flight options to find the best deal for your october trip.
Starting from $259
Book your economy class flight from Chicago (ORD) to Ontario (ONT)and save money on your travel. Compare all flight options to find the best deal for your october trip.
Starting from $263
Book your economy class flight from Chicago (ORD) to Ontario (ONT)and save money on your travel. Compare all flight options to find the best deal for your october trip.
Planning a trip from Chicago (ORD) to Ontario (ONT) in october? SlickTrip helps you find the cheapest economy class flights with our comprehensive flight comparison tool. Whether you prefer direct flights for convenience or multi-stop flights for savings, we have options for every budget and schedule.
October in the Inland Empire near Ontario International Airport (ONT) is usually warm and dry, with daytime highs in the 70s to low 80s Fahrenheit and cool evenings. This comfortable, sunny weather makes October ideal for theme-park visits and outdoor activities in nearby Los Angeles, Anaheim, and Riverside. Pack light layers for cooler evenings and sunscreen for daytime activities after arrival at ONT.
Direct nonstop service between Chicago O'Hare International Airport (ORD) and Ontario International Airport (ONT) can be limited and sometimes seasonal in October; many travelers rely on one-stop itineraries via Los Angeles (LAX), Phoenix (PHX), or Denver (DEN). Check major carriers' October schedules and consider flexible dates or early bookings to find the best nonstop or single-connection itineraries. Use fare comparison tools to spot nonstop offerings when available.
From Ontario International Airport (ONT) you can quickly access top Southern California destinations like Anaheim (Disneyland), Los Angeles downtown, San Bernardino, Riverside, and Palm Springs. The airport's proximity to major freeways makes car rentals and rideshares efficient for multi-destination itineraries. For longer stays, consider combining a visit to Los Angeles attractions with day trips to San Diego or Joshua Tree National Park.
