Best Flights starting from $89
Economy
Portland (PDX)
Sat, Apr 11
One-way
Ontario (ONT)
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Economy
Portland (PDX)
Thu, Apr 9
One-way
Ontario (ONT)
—
Economy
Portland (PDX)
Fri, Apr 10
One-way
Ontario (ONT)
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Other Destinations
Portland (PDX) to Los Angeles (Any) in April from $108
From $108
Portland (PDX) to Toronto (Any) in April from $143
From $143
Portland (PDX) to Phoenix (PHX) in April from $189
From $189
Portland (PDX) to Phoenix (Any) in April from $189
From $189
Portland (PDX) to Pittsburgh (PIT) in April from $237
From $237
Portland (PDX) to Tulsa (TUL) in April from $237
From $237
Flights from Other Cities
San Francisco (SFO) to Ontario (ONT) in April from $133
From $133
Dallas (DFW) to Ontario (ONT) in April from $177
From $177
Myrtle Beach (Any) to Ontario (ONT) in April from $393
From $393
Dallas (DFW) to Ontario (ONT) in May from $177
From $177
Cleveland (CLE) to Ontario (ONT) in May from $219
From $219
Boise (BOI) to Ontario (ONT) in May from $257
From $257
✈️ Flight Guide: Portland (PDX) → Ontario (ONT)
Complete travel information for your April journey
Departing from Portland (PDX) FAQs
From Ontario International Airport (ONT), budget-conscious travelers frequently find the lowest economy fares on carriers such as Spirit Airlines, Frontier Airlines, and Southwest Airlines, with seasonal deals from Alaska Airlines and American Airlines. February often offers off-peak savings and promotional sales—book 3–7 weeks in advance and use fare alerts to lock in the cheapest fares from ONT.
For domestic economy flights departing Ontario International Airport (ONT), arrive at least 90 minutes before departure to allow time for check-in, security screening, and possible traffic or parking delays. If you need to check bags, or travel during holiday peak times (e.g., December or July), plan for 2 hours to avoid stress.
Ontario International Airport (ONT) provides frequent low-fare economy routes to top short- and mid-haul destinations like Harry Reid International Airport (Las Vegas - LAS), Phoenix Sky Harbor International Airport (PHX), San Diego International Airport (SAN), Denver International Airport (DEN), and Seattle-Tacoma International Airport (SEA). These routes are popular for weekend getaways and business connections, so subscribe to airline newsletters for targeted ONT economy deals.
Yes—economy fares from Ontario International Airport (ONT) typically rise during summer (June–August), winter holidays (late December), and around major local events. Conversely, January, February (excluding Presidents' Day weekend), and late September often have lower average prices; booking during these off-peak months can yield substantial savings.
Ontario International Airport (ONT) offers affordable ground options including shared shuttles, regional buses, rideshare services (Uber/Lyft), airport shuttles to Ontario and nearby Los Angeles neighborhoods, and car rentals for budget-minded travelers. For cheapest transfers, compare regional bus and shuttle services or book shared-ride shuttles in advance to save on arrival and departure costs.
Arriving at Ontario (ONT) FAQs
To find the cheapest economy arrival options, search flexible-date calendars on metasearch engines, set fare alerts, and compare low-cost carriers operating from Ontario International Airport (ONT) to your target airports like Harry Reid International Airport (Las Vegas - LAS) and Phoenix Sky Harbor International Airport (PHX). Consider alternative nearby airports—Los Angeles International Airport (LAX) or John Wayne Airport (SNA)—to widen cheap-economy options.
Popular arrival airports on cheap economy itineraries from Ontario International Airport (ONT) include Harry Reid International Airport (Las Vegas - LAS), Phoenix Sky Harbor International Airport (PHX), Denver International Airport (DEN), Seattle-Tacoma International Airport (SEA), and San Diego International Airport (SAN). These airports frequently appear in promotional economy fare sales and short-haul deals.
Yes; arrival prices in economy fare class fluctuate by month. For example, February and September often show lower average arrival fares due to reduced leisure demand, while July and late-December typically drive arrivals prices up. Monitoring monthly trends for your arrival airport helps you choose lower-cost travel dates.
When arriving on an economy ticket into larger hubs from Ontario International Airport (ONT), allow a minimum 60–90 minutes for same-terminal connections and 90–180 minutes for different terminals or connecting through heavy-traffic airports like Denver International Airport (DEN) or Los Angeles International Airport (LAX). Budget extra time if you need to clear U.S. customs on international legs or transfer between terminals.
Cheap economy arrivals from ONT commonly connect travelers to nearby major cities such as Los Angeles (Los Angeles International Airport - LAX), San Diego (San Diego International Airport - SAN), San Francisco (San Francisco International Airport - SFO), and Riverside and San Bernardino via regional ground transport. These cities are often included as optional destinations when searching for the cheapest arrival airport.
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Events & Festivals That Affect ONT Economy Fares - Monthly Guide
Major events that commonly affect economy fares from Ontario International Airport (ONT): Super Bowl and CES (January/February) can spike fares to Las Vegas and Phoenix; Spring Break (March) raises prices to leisure hubs; Coachella (April) and major film festivals drive regional demand near Los Angeles (Los Angeles International Airport - LAX) and increase economy fares; Summer holidays (June–July) and Labor Day weekend cause peak pricing across most routes; major cultural festivals and Thanksgiving/Christmas holidays cause predictable spikes. Book well in advance for event dates and consider alternate arrival airports to avoid high economy prices.
Best Time to Fly from Ontario International Airport (ONT) for Cheap Economy Fares
The best times to fly for cheap economy fares from Ontario International Airport (ONT) are typically mid-January through late February and mid-September through mid-November—shoulder seasons where leisure demand softens. Mid-week travel (Tuesdays and Wednesdays) and red-eye flights often yield the lowest economy prices. Avoid peak summer (June–August) and the December holidays unless booked months in advance; set fare alerts and be flexible on travel dates for optimal economy savings.
Direct vs. Connecting Flights from Ontario International Airport (ONT) - Economy Choices
Direct economy flights from Ontario International Airport (ONT) are more convenient and usually save travel time, but sometimes connecting flights offer lower fares due to competition on multi-leg routes. For shorter trips (e.g., ONT to LAS or SAN), choose nonstop economy to value time; for longer routes (e.g., ONT to Denver or Mexico City), compare connecting itineraries that may be significantly cheaper in economy. If price is the priority, allow longer connection windows and check different hub options (PHX, DEN, LAS) to lower economy ticket cost—just factor in transfer times and luggage policies.
Airline Comparison for Economy Travel from Ontario International Airport (ONT)
Major carriers from Ontario International Airport (ONT) for cheap economy travel: Southwest Airlines often bundles two free checked bags and variable fares—useful for value travelers; Spirit and Frontier advertise very low base fares but charge extra for seat selection and baggage—ideal if traveling light; Alaska and American provide competitive economy sales and strong route networks for mid-range prices; Delta may offer premium economy deals with higher on-board service. Compare total price (fare + bags + seat fees) and loyalty perks when choosing the cheapest economy option, and always check bundled fare vs. bare-bones low-cost carrier pricing to find the best overall value.
Seasonal Travel Tips for Cheap Economy Flights from Ontario International Airport (ONT)
Spring: Book early for spring-break weeks and avoid peak weekends; flexible fares help if plans may change. Summer: Reserve economy seats months in advance and compare nearby airports for better prices; pack light to avoid checked-bag fees on low-cost carriers. Fall: Take advantage of shoulder season—travel mid-week and find the cheapest economy flights. Winter: For holiday travel, buy tickets early and consider arriving/departing on non-peak days; watch weather advisories for potential routing impacts. Across seasons, use fare alerts, check bundled vs bare-bones pricing, and factor in baggage and seat fees to determine the real cost of the cheapest economy option.
Flight Time & Schedules from Ontario International Airport (ONT) - Economy Routes
Common nonstop economy flight durations from Ontario International Airport (ONT): to Harry Reid International Airport (Las Vegas - LAS) ~1 hour 10 minutes, to Phoenix Sky Harbor International Airport (PHX) ~1 hour 20 minutes, to Denver International Airport (DEN) ~2 hours 15 minutes, to San Diego International Airport (SAN) ~45 minutes, to Seattle-Tacoma International Airport (SEA) ~2 hours 45 minutes. Schedules peak in early morning and late afternoon for business routes; leisure routes have frequent midday and evening departures. For cheapest economy options, search for mid-week and red-eye flights which often have lower occupancy and better pricing.
Cheap Flights from Ontario International Airport (ONT) - Economy Fare Strategies
To find the cheapest economy flights from Ontario International Airport (ONT), combine flexible-date searches, fare alerts, and direct-checks on low-cost carriers like Spirit, Frontier, and Southwest. Use location-based modifiers (e.g., 'cheap ONT to LAS economy', 'Ontario to Phoenix cheap flights') and monitor mid-week departures. For best savings, book 3–8 weeks ahead for domestic economy travel and compare nearby airports (Los Angeles International Airport (LAX), John Wayne Airport (SNA)) for alternate routes. CTA: Sign up for fare alerts and check low-cost carriers daily to catch short-term economy sales.