Best Flights starting from $160
from$160economy
Chicago (ORD)
Fri, May 1
Roundtrip
Ontario (ONT)
Fri, May 8
Fields updated — click View Prices to search ↑
Other Options for This Route
Other Destinations
Chicago (ORD) to Philadelphia (PHL) in May from $32
From $32
Chicago (ORD) to Newark (EWR) in May from $65
From $65
Chicago (ORD) to New York (JFK) in May from $69
From $69
Chicago (ORD) to Fort Lauderdale (Any) in May from $72
From $72
Chicago (ORD) to New Orleans (MSY) in May from $76
From $76
Chicago (ORD) to Las Vegas (LAS) in May from $81
From $81
Flights from Other Cities
Denver (Any) to Ontario (ONT) in May from $88
From $88
Dallas (Any) to Ontario (ONT) in May from $160
From $160
Kansas City (MCI) to Ontario (ONT) in May from $160
From $160
Dallas (DFW) to Ontario (ONT) in May from $177
From $177
Austin (AUS) to Ontario (ONT) in May from $180
From $180
Cleveland (CLE) to Ontario (ONT) in May from $219
From $219
✈️ Flight Guide: Chicago (ORD) → Ontario (ONT)
Complete travel information for your May journey
Departing from Chicago (ORD) FAQs
To find the cheapest economy flights from Ontario International Airport (ONT) in June, search flexible-date calendars on fare-comparison sites, set price alerts, and check low-cost carriers like Southwest and Spirit. June is a shoulder-to-peak travel month for Southern California, so booking 4–8 weeks in advance and flying midweek can lower fares. Use primary keywords like "cheap flights from Ontario International Airport" when searching to surface budget deals.
Baggage rules for economy travelers departing Ontario International Airport (ONT) depend on the airline: low-cost carriers often charge for checked bags and sometimes for larger carry-ons, while legacy carriers may include at least one carry-on. Always check your airline's baggage policy before heading to ONT and add bags online to save on airport fees. Use travel and airline comparison keywords like "economy baggage fees ONT" for quick lookup.
Yes — Ontario International Airport (ONT) typically offers frequent direct economy flights to Las Vegas served by carriers like Southwest and Allegiant. These routes are among the most price-competitive, especially during off-peak weekdays and holiday shoulder periods. Search "ONT to Las Vegas cheap flights" and set alerts for flash sales to catch the lowest fares.
To reach Ontario International Airport (ONT) from downtown Los Angeles on a budget, consider shared shuttles, public transit combinations (Metrolink + local shuttle), or split ride-hailing options. Trains and buses can be economical but add extra transfer time; compare cost versus convenience using keywords like "cheap transfer to ONT from LA". Booking airport shuttles in advance often secures the lowest rates.
December holiday travel from Ontario International Airport (ONT) usually fills quickly and last-minute deals are rare; fares often spike closer to holidays. For December travel, book early (8–12 weeks) and watch for targeted sale windows or midweek departures to save on economy fares. Use keywords like "ONT holiday flights December" to find seasonal offers and set price alerts.
From Ontario International Airport (ONT), low-cost and legacy carriers make nearby destinations like Los Angeles, San Diego, Las Vegas, Phoenix, and San Francisco regularly accessible with cheap economy fares. These cities are often part of promotion networks and flash sales, so use location-based keywords such as "ONT to San Diego cheap flights" to find deals. Consider flying midweek or using price alerts to lower costs.
Arriving at Ontario (ONT) FAQs
Arriving in Economy Class (ECONOMY) typically means basic seat assignment and standard carry-on rules; checked baggage allowance varies by airline and fare type. Some cheap economy fares exclude checked bags, so review your ticket for baggage fees and consider purchasing bundles for savings. Use search phrases like "economy class baggage fees" to compare policies before travel.
To find the cheapest economy arrival fares to major gateways like New York, Chicago, and Orlando, use fare comparison engines, set multi-destination alerts, and be flexible with dates and nearby airports. Searching using keywords like "cheap economy flights to New York" and monitoring price calendars can reveal the best windows to book. Consider connecting flights or alternative airports for additional savings.
On arrival with the cheapest economy fare, expect basic in-flight service and potential restrictions like no complimentary checked baggage or seat selection. You may have to pay for add-ons such as priority boarding, extra legroom, or checked luggage. Plan accordingly and pack a carry-on with essentials to avoid extra fees.
Yes — during December holidays, arrive early at the airport to allow for increased security and crowds; cheap economy travelers should account for longer baggage waits and potential delays. If you booked a basic economy fare for December, carry digital copies of your itinerary and consider travel insurance for disruptions. Use "economy arrival tips December" to find seasonal checklists.
Economy arrivals commonly access major cities like Los Angeles, San Diego, Las Vegas, Phoenix, and San Francisco when flying into Southern California hubs. These metropolitan areas are often served by budget routes and short-haul economy flights. Searching with location modifiers like "economy flights to San Diego" yields targeted deals and route options.
1.0.2603.30
Events & Festivals Near Ontario International Airport (ONT) — Travel Timing for Economy Flyers
Major events that affect ONT economy fares: January — Rose Parade viewing increases regional travel; February — presidents' week and local conventions; March–April — spring break festivals in Las Vegas and San Diego; May — music and food festivals across Southern California; June–August — summer concerts and Comic-Con spillover raising demand; September — Labor Day weekend and regional fairs; October — fall festivals and tourist shoulder-season events; November — holiday parades and Black Friday travel; December — holiday travel and New Year's events. For economy travelers, avoid peak festival weekends or book early; alternatively, travel just before or after events to tap lower fares. CTA: Check event dates and search "cheap flights ONT during [event name]" to plan.
Best Time to Fly from Ontario International Airport (ONT) for Cheap Economy Fares
The best time to fly from Ontario International Airport (ONT) for cheap economy fares is during shoulder seasons — typically January through mid-February and September through early November. For domestic short-haul routes, book 3–8 weeks in advance; for busier holiday travel, book 2–3 months ahead. Traveling midweek, choosing early-morning or red-eye flights, and avoiding peak summer and major holiday weekends increases your chances of affordable fares. CTA: Check fare calendars now for "ONT cheapest months" and sign up for alerts.
Direct vs Connecting Flights from Ontario International Airport (ONT) — Economy Tradeoffs
Direct nonstop economy flights from Ontario International Airport (ONT) save time but can cost more during peak windows. Connecting flights—often routing through hubs like Phoenix (PHX), Denver (DEN), or Dallas-Fort Worth (DFW)—can cut fares substantially for long-haul trips. For short regional routes (e.g., ONT to Las Vegas), nonstop options are typically both fast and affordable. Use connecting flights when seeking the absolute lowest economy fare, but weigh total travel time, layover risks, and potential for delays. CTA: Compare nonstop and connecting options with a fare aggregator using the keyword "ONT connecting flights cheap."
Airline Comparison for Economy Travelers at Ontario International Airport (ONT)
Key airlines from Ontario International Airport (ONT) include Southwest (strong for flexible economy fares and free checked baggage on many fares), American and Delta (wide network and frequent connections), United (hub connectivity), Alaska (West Coast strength), and low-cost carriers like Spirit or Allegiant for ultra-low fares. Southwest often provides the best balance of price and included baggage for economy travelers, while ultra-low-cost carriers can undercut fare prices but add fees for bags and seat selection. Compare total price (ticket + fees) rather than base fare alone. CTA: Run a side-by-side fare check for "ONT airline comparison economy" before booking.
Seasonal Travel Tips for Economy Flights from Ontario International Airport (ONT)
Winter: Book early for holiday travel, carry essential documents and layers in a carry-on, and expect longer security lines during peak days. Spring: Take advantage of shoulder-season fares; pack for variable weather and book midweek flights. Summer: Reserve tickets and accommodations well in advance; consider red-eye flights or earlier departures to save on economy fares. Fall: Enjoy lower airfare and fewer crowds—flexible date searches pay dividends. Universal tips: always check baggage inclusions, sign up for airline newsletters for flash sales, and use fare alerts to secure the cheapest economy flights. CTA: Use the phrase "cheap flights from Ontario International Airport" in your searches and subscribe for alerts to catch seasonal deals.
Flight Times & Schedules from Ontario International Airport (ONT) — Economy Guide
Typical nonstop flight durations from Ontario International Airport (ONT) in economy class: Los Angeles area connections (LAX) are not applicable as separate flights but ground transfers average 30–90 minutes; San Diego (SAN) 55–75 minutes; Las Vegas (LAS) 55–70 minutes; Phoenix (PHX) 70–90 minutes; San Francisco (SFO) 90–110 minutes. For schedule planning, midweek departures and red-eye flights often have lower fares and less congestion. Use aggregate schedule search tools to filter by nonstop or single-connection flights and include time-of-day modifiers like "early morning" to find cheaper economy options.
Cheap Flights from Ontario International Airport (ONT) — Economy Savings Guide
To find cheap economy flights from Ontario International Airport (ONT), combine fare calendars, price alerts, and flexible-date searches. Primary tactics include: setting alerts on multiple aggregators, checking low-cost carriers (Southwest, Spirit, Allegiant) directly, and comparing alternative nearby airports like Los Angeles (LAX). Use secondary keywords such as "budget airfare" and LSI terms like "fare sales" and "price alerts." Book 1–3 months ahead for domestic economy routes and 2–6 months for busier holiday windows. CTA: Search now for "cheap flights from Ontario International Airport" and sign up for alerts to lock in savings.