Best Flights starting from $240
from$240economy
Detroit (DTW)
Thu, Apr 2
Roundtrip
Ontario (ONT)
Fri, Apr 17
from$240economy
Detroit (DTW)
Sat, Apr 4
Roundtrip
Ontario (ONT)
Sun, Apr 19
from$270economy
Detroit (DTW)
Wed, Apr 1
Roundtrip
Ontario (ONT)
Thu, Apr 16
from$297economy
Detroit (DTW)
Fri, Apr 3
Roundtrip
Ontario (ONT)
Sat, Apr 18
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Other Destinations
Detroit (DTW) to Las Vegas (Any) in April from $106
From $106
Detroit (DTW) to Houston (IAH) in April from $108
From $108
Detroit (DTW) to Las Vegas (LAS) in April from $112
From $112
Detroit (DTW) to Fort Myers (RSW) in April from $114
From $114
Detroit (DTW) to Orlando (MCO) in April from $117
From $117
Detroit (DTW) to Orlando (Any) in April from $117
From $117
Flights from Other Cities
San Francisco (SFO) to Ontario (ONT) in April from $59
From $59
Portland (PDX) to Ontario (ONT) in April from $89
From $89
San Francisco (SFO) to Ontario (ONT) in April from $133
From $133
Phoenix (PHX) to Ontario (ONT) in April from $137
From $137
Dallas (DFW) to Ontario (ONT) in April from $177
From $177
Portland (PDX) to Ontario (ONT) in April from $177
From $177
✈️ Flight Guide: Detroit (DTW) → Ontario (ONT)
Complete travel information for your April journey
Departing from Detroit (DTW) FAQs
Ontario International Airport (ONT) serves several major and low-cost carriers including Southwest, Alaska Airlines, Delta, American, United, Volaris and Spirit on select routes. For the cheapest economy fares, compare Southwest and Volaris for domestic and Mexico routes and use fare aggregators (Google Flights, Skyscanner) to spot low-season sales. Always check baggage and change fees—an ultra-low fare can become more expensive when fees are added.
For domestic economy flights from Ontario International Airport (ONT), arrive at least 90 minutes before departure during off-peak times and 2 hours during peak holiday or weekend periods. This allows time for check-in, security screening (TSA), and possible traffic through the Inland Empire to the airport. If you have checked luggage or need to change seats, add another 20–30 minutes.
Yes, Ontario International Airport (ONT) regularly offers nonstop economy service to nearby major destinations such as Las Vegas (LAS), Phoenix (PHX), San Diego (SAN), and Denver (DEN) depending on season and carrier schedules. Nonstop flights are typically the best value for short trips because they reduce travel time and the possibility of missed connections. Check airlines’ official schedules and fare calendars for current nonstop availability.
January and February are often among the cheapest months to fly economy from Ontario International Airport (ONT) because demand drops after the winter holidays and many carriers run fare sales. However, low prices can vary by route—Mexico and vacation-bound routes may still be busy. Use fare alerts and a flexible date search to lock in the best January–February deals.
Ontario International Airport (ONT) offers economy and short-term parking lots, shared-ride shuttles, ride-hailing pickup zones, and public transit (Omnitrans connections). For budget travelers, long-term economy parking and ride-shares or park-and-ride options typically offer the best value. Compare parking reservation sites and check for off-site lots with shuttle service for additional savings.
From Ontario International Airport (ONT) travelers commonly access Los Angeles, Anaheim (Disneyland), San Diego, Palm Springs, Las Vegas, Phoenix and central/eastern Los Angeles County destinations in the Inland Empire. ONT is a convenient low-congestion alternative to LAX for visiting Southern California attractions and desert resort destinations. Use ONT as a hub for combined trips to SoCal beaches, theme parks, and national parks.
Arriving at Ontario (ONT) FAQs
'Cheapest Economy Fare (ECONOMY)' refers to the lowest available economy-class ticket type for a given route, often with restricted changes and limited or no included checked baggage. These fares maximize upfront savings but can have stricter rules for cancellations and seat selection. Always compare total trip cost including baggage and seat fees when booking the cheapest economy fare.
Use fare aggregators like Google Flights, Skyscanner, Kayak and set price alerts for your desired dates. Search with flexible dates, midweek travel, and nearby airports (LAX, SNA) to uncover lower economy fares. Book directly with the airline once you find the best deal to ensure smoother customer service and easier changes.
Yes — January and September are commonly cheaper months for economy travel from Ontario International Airport (ONT) due to post-holiday and shoulder-season demand lulls. While January offers off-peak savings after the holidays, September’s lower leisure travel demand often leads to discounted fares. Use monthly price calendars and flexible-date searches to capture these opportunities.
Cheap economy fares from Ontario International Airport (ONT) frequently connect travelers to Los Angeles, Anaheim (Disneyland), San Diego, Las Vegas, Phoenix, Cabo San Lucas and Mexico City. Budget carriers and seasonal schedules make destinations in Mexico and the southwestern U.S. especially competitive for the lowest economy fares. Consider multi-city itineraries that use ONT as a low-cost gateway to Southern California attractions.
To secure the cheapest economy seats, search with flexible dates, set multi-source fare alerts, add a single carry-on only filter, and check both one-way and roundtrip pricing for better value. Consider booking during low-demand windows (midweek, off-peak months) and be ready to accept limited change/refund flexibility. Use airline loyalty points or credit card deals to offset fees and upgrade only if necessary.
Cheapest economy fares often include only a personal item, with carry-on and checked baggage charged separately depending on the carrier. Airlines like Southwest may include two checked bags even in lower fare classes, while ultra-low-cost carriers typically charge for both carry-on and checked luggage. Check the specific airline’s baggage policy before booking to avoid surprise fees that could negate fare savings.
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Events & Festivals Impacting ONT Economy Fares — Plan Ahead
Major events and festivals that impact economy fares from Ontario International Airport (ONT) include Anaheim/LA area conventions, Comic-Con (San Diego), Coachella and Stagecoach (near Palm Springs), Los Angeles county sporting events, and holiday-weekend conventions. Event-driven demand typically raises fares and hotel rates; book early or fly on non-event dates to secure the cheapest economy fares. CTA: Check event calendars and adjust travel dates to find the best economy prices out of Ontario International Airport (ONT).
Best Time to Fly from Ontario International Airport (ONT) — Get the Cheapest Economy Fare
The best time to fly from Ontario International Airport (ONT) for cheap economy fares is typically mid-January through early March and September through early November—these shoulder months offer the lowest average prices. Midweek departures (Tuesdays–Thursdays), early-morning flights and red-eyes tend to be cheaper. Avoid peak holiday windows like late June–August and mid-December to New Year for the highest fares. CTA: Use our fare calendar and alerts to pick the best time to fly economy from Ontario International Airport (ONT).
Direct vs Connecting Flights — Ontario International Airport (ONT) Economy Decisions
Direct (nonstop) flights from Ontario International Airport (ONT) reduce travel time and missed-connection risk, which is often worth a modest premium when time is valuable. Connecting flights can offer cheaper economy fares, especially on longer or international routes, but factor in potential layover delays and the need to re-clear security at some hubs. For cheapest economy travel, be flexible: a one-stop itinerary with a long layover can be inexpensive, but check total travel time and baggage transfer rules. CTA: Compare nonstop and connecting options from Ontario International Airport (ONT) to find the best economy value for your schedule.
Airline Comparison — Economy Fares from Ontario International Airport (ONT)
Major carriers serving Ontario International Airport (ONT) include Southwest, Alaska Airlines, Delta, American, United, Volaris and Spirit. Southwest is often a strong economy-value choice for domestic travelers because of included two-checked-bag allowance on many fares; Volaris and Spirit can provide the lowest base fares to Mexico and nearby U.S. destinations but charge add-on fees for bags and seat selection. Compare total landed cost, flight times, and customer service reputations when choosing an airline. CTA: Compare carriers from Ontario International Airport (ONT) now to find the cheapest economy combination for your trip.
Seasonal Travel Tips — Cheapest Economy Travel from Ontario International Airport (ONT)
Spring (March–May): Book spring-break travel early and target mid-April for shoulder-season savings. Summer (June–August): Expect highest fares; plan far in advance and consider alternate airports to reduce costs. Fall (September–November): Often the best season for cheap economy fares—target September and early November. Winter (December–February): Post-holiday January is cost-effective; holiday windows in late December are expensive. Always check low-cost carriers and use carry-on only filters to keep economy fares low. CTA: Apply these seasonal tips when searching cheap economy flights from Ontario International Airport (ONT) to lower your total travel cost.
Flight Times & Schedules — Ontario International Airport (ONT) Economy Routes
Typical nonstop flight times from Ontario International Airport (ONT) include: Las Vegas (LAS) ~1 hour, Phoenix (PHX) ~1 hour 20 minutes, San Diego (SAN) ~45 minutes, Denver (DEN) ~2 hours 20 minutes, Mexico City (MEX) ~3 hours 30 minutes (with seasonality). Low-cost carriers often schedule multiple daily flights on short-haul routes, while transcontinental and Mexico routes may be seasonal. CTA: Check live schedules and book economy seats early to secure the best times and fares.
Cheap Flights from Ontario International Airport (ONT) — Economy Booking Strategies
To find cheap flights from Ontario International Airport (ONT) in economy class, combine flexible-date searches, fare alerts, and comparisons across nearby airports (LAX, SNA). Use multiple aggregators such as Google Flights, Skyscanner and Kayak and follow airlines’ social channels for flash sales. For international value, check low-cost carriers to Mexico and compare total trip costs including baggage and seat fees. CTA: Search cheap flights from Ontario International Airport (ONT) now to compare economy fares and set alerts for the best deals.