Best Flights starting from $325
from$325economy
Chicago (ORD)
Sat, Mar 28
Roundtrip
Ontario (ONT)
Mon, Mar 30
from$336economy
Chicago (ORD)
Mon, Mar 30
Roundtrip
Ontario (ONT)
Wed, Apr 1
from$375economy
Chicago (ORD)
Tue, Mar 31
Roundtrip
Ontario (ONT)
Thu, Apr 2
from$619economy
Chicago (ORD)
Sun, Mar 29
Roundtrip
Ontario (ONT)
Tue, Mar 31
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Other Options for This Route
Other Destinations
Chicago (ORD) to Fort Lauderdale (FLL) in March from $34
From $34
Chicago (ORD) to Orlando (MCO) in March from $57
From $57
Chicago (ORD) to Boston (BOS) in March from $64
From $64
Chicago (ORD) to Fort Myers (RSW) in March from $65
From $65
Chicago (ORD) to New York (LGA) in March from $73
From $73
Chicago (ORD) to Las Vegas (Any) in March from $74
From $74
Flights from Other Cities
Cleveland (CLE) to Ontario (ONT) in March from $106
From $106
San Antonio (SAT) to Ontario (ONT) in March from $127
From $127
San Antonio (SAT) to Ontario (ONT) in March from $164
From $164
Denver (Any) to Ontario (ONT) in March from $185
From $185
Salt Lake City (SLC) to Ontario (ONT) in March from $195
From $195
Oklahoma City (OKC) to Ontario (ONT) in March from $208
From $208
✈️ Flight Guide: Chicago (ORD) → Ontario (ONT)
Complete travel information for your March journey
Departing from Chicago (ORD) FAQs
To find the cheapest economy flights from Ontario International Airport (ONT), search multiple OTAs and carrier sites, set price alerts, and be flexible with dates. Use weekday departures (Tuesday–Thursday) and consider early-morning or late-night flights for lower fares. Booking 21–60 days ahead often yields the best combination of availability and price.
Ontario International Airport (ONT) provides easy access to Los Angeles, Anaheim (home to Disneyland), San Bernardino, Riverside, and Palm Springs, and is a convenient gateway for Las Vegas travelers. Ground transportation options include rental cars, shuttles, and rideshares with fast freeway access to I-10 and I-15.
Yes — November and December often feature holiday and Black Friday fare sales for economy travel from Ontario International Airport (ONT), but demand increases around Thanksgiving and Christmas. Book early for holiday weeks; for December mid-week travel you can still find lower economy fares if you monitor flash sales and flexible-date pricing.
Yes — Ontario International Airport (ONT) has nonstop budget and legacy carrier routes to hubs such as Las Vegas, Phoenix, Denver, and seasonal nonstop flights to some West Coast cities. However, the cheapest economy fares sometimes include connections — compare nonstop vs connecting to weigh price against travel time.
Cheap economy fares marketed from Ontario International Airport (ONT) often have strict carry-on and checked-bag rules; ultra-low-cost carriers may charge for both. Check the airline's fare class details before booking to avoid surprise baggage fees, and consider adding a bag during purchase for a lower price than airport rates.
Summer (June–August) is a peak travel season, so cheap economy fares from Ontario International Airport (ONT) can be limited and higher compared to shoulder seasons. Look for early-bird deals in January–March, and use flexible dates and midweek flights to secure lower fares for summer travel.
Arriving at Ontario (ONT) FAQs
A 'Cheapest Economy Fare (ECONOMY)' usually includes a basic seat and one small personal item; checked bags, seat selection, and in-flight extras are often additional charges. Always review the fare conditions before booking to avoid surprise fees at arrival and consider bundled fares if you need baggage or seat choices.
Cheapest economy fares commonly connect travelers to major cities like Los Angeles, New York City, San Francisco, Las Vegas, Seattle, and Denver depending on the route. For travelers arriving on an economy fare, using secondary airports or flexible travel dates often unlocks the best prices.
In August, expect busier airports and potential delays; arrive earlier for connections and know baggage rules to speed your exit. Pack essentials in a personal item to avoid baggage fees and verify airport transfer options in advance to ensure a smooth arrival.
Upgrades from the cheapest economy fare may be available for a fee during online check-in, at the gate, or via an airline’s upgrade offers, but availability and price vary widely. If comfort is a priority, checking upgrade options early or purchasing a higher fare class at booking can be more reliable.
Arrival transfers are not always cheaper for economy passengers; low-cost carriers don't bundle ground transport but landing at secondary airports accessed by cheap economy fares can reduce car rental and parking costs. Compare shuttle, public transit, and rideshare options to find the best value for your arrival city.
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Events & Festivals — Plan Cheap Economy Travel from ONT
Major events that can raise fares and airport crowds include: Comic-Con International in San Diego (July), E3/Gaming conventions in Los Angeles (varies), Disneyland peak seasons (spring break, summer), Coachella (April near Palm Springs — increases demand on nearby airports), and large sporting events or conventions in Las Vegas year-round. When flying on the cheapest economy fare from Ontario International Airport (ONT), avoid peak event dates or book far in advance. CTA: Check event calendars for your destination and adjust travel dates to secure cheaper economy fares.
Best Time to Fly — Cheapest Economy Fares from ONT
For the cheapest economy fares from Ontario International Airport (ONT), book 21–60 days in advance for domestic trips and 60–120 days for cross-country travel. Fly midweek (Tuesday–Thursday) and choose off-peak months like September and January for the lowest prices. Shoulder seasons (April–May and September–October) often combine better weather with lower fares. Use fare alerts and be flexible with departure airports and times to capture the best deals. CTA: Check flexible dates around your trip for the best economy fares from ONT.
Direct vs Connecting — Cheapest Economy Tradeoffs from ONT
Connecting flights often deliver the lowest economy fares from Ontario International Airport (ONT), especially for long-haul or cross-country travel, while nonstop flights save time and reduce the risk of missed connections. If price is the priority, consider one-stop itineraries through big hubs (Phoenix, Las Vegas, Denver) and allow sufficient layover time. For short trips where time is critical, paying a premium for a nonstop may be worthwhile. Balance total door-to-door time, baggage transfer risk, and potential savings when choosing between direct and connecting economy options.
Airline Comparison — Cheap Economy Options from ONT
Airline options for cheap economy travel from Ontario International Airport (ONT) vary: low-cost carriers (Spirit, Frontier) often provide the lowest base fares but charge for carry-on and checked bags; Southwest frequently includes two free checked bags and competitive fares on many routes; Alaska, American, and Delta offer broader route networks and frequent sales for economy seats. Compare total trip cost (fare + baggage + seat selection) rather than base fare alone to find the true cheapest economy option. CTA: Compare total costs across carriers for your ONT itinerary before booking.
Seasonal Travel Tips — Save on Economy Fares from ONT
Winter: Book holiday travel early, travel midweek to lower costs, and pack warm layers in carry-on if your cheapest economy fare excludes blankets. Spring: Take advantage of shoulder-season deals in March–April; flexible dates yield the best economy prices. Summer: Expect higher fares — secure early bookings and consider red-eye flights for savings. Fall: September and October offer the best value with lower demand and comfortable weather; use this season for affordable economy travel and last-minute deals. Across all seasons, check baggage fees, compare total trip costs, and sign up for fare alerts to capture the lowest economy fares from Ontario International Airport (ONT). CTA: Find and book the cheapest economy fares from ONT today.
Flight Times & Schedules — Ontario International Airport (ONT) Economy Routes
Typical nonstop flight times from Ontario International Airport (ONT) for cheap economy routes: Las Vegas ~1h 10m, Phoenix ~1h 30m, San Francisco ~1h 20m (seasonal/connecting flights may vary), Denver ~2h 20m, New York City (JFK/EWR) typically 5h+ with most cheap economy itineraries including a connection. Low-cost, economy-focused schedules favor early-morning and late-evening departures; these time slots often yield the lowest fares. For connecting itineraries, allow at least 90 minutes for domestic transfers to reduce risk of missed flights when flying cheap economy. CTA: Compare schedules and choose the cheapest economy times from Ontario International Airport (ONT) for your travel dates.
Cheap Flights Strategies — ONT to Economy Routes
To get the cheapest economy flights from Ontario International Airport (ONT) start by using fare comparison engines, setting multi-source price alerts, and being flexible with travel dates and airports. Consider nearby major airports (Los Angeles, Long Beach) when comparing prices and remember low-cost carriers often reduce base fares but add ancillary fees for bags and seats. Book during shoulder seasons (September, January) and midweek departures to maximize savings; act on flash sales quickly and consider one-way combinations to build the lowest price itinerary. CTA: Search cheap flights from Ontario International Airport (ONT) now and set price alerts to catch economy deals.