Cheap Flight Deals to Ontario
Find the best cheap flight deals to Ontario International Airport (ONT). Compare fares, book in seconds, and discover everything Ontario, California has to offer.
Round-trip flights from $79*
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Your Complete Guide to Flying to Ontario, California
Ontario International Airport serves California’s fast-growing Inland Empire region — San Bernardino, Riverside, and the broader area east of Los Angeles that is home to nearly 5 million people. ONT offers a dramatically less stressful alternative to LAX for Inland Empire residents and visitors, with shorter security lines, easier parking, and competitive pricing from Southwest, American, Alaska, and other major carriers.
The Ontario area itself offers access to several distinct California experiences — the renowned wine country of Temecula is an hour south, the ski resorts of Big Bear Mountain are 90 minutes northeast, and the famous Coachella Valley (Palm Springs, Joshua Tree) is 75 minutes east. Book cheap flight deals to Ontario (ONT) and enjoy easy access to Southern California’s most diverse inland region.
Rising to 10,064 feet, Mt. Baldy is the highest peak in the San Gabriel Mountains and a popular destination for hiking in summer and skiing in winter, just 25 miles from Ontario airport.
Mount San Antonio (Mt. Baldy)
One of California’s largest outlet shopping centers, featuring over 200 factory stores, entertainment venues, and dining options — a major regional retail destination adjacent to the airport.
Ontario Mills
Home of the Los Angeles County Fair (September-October, one of the largest in the US) and the Auto Club Raceway at Pomona NHRA drag racing events throughout the year.
Pomona Fairplex
Southern California’s premier wine region, located approximately 60 miles south of Ontario, featuring over 40 wineries in rolling chaparral hillside scenery with exceptional Cabernet Sauvignon and Syrah.
Temecula Wine Country
A year-round mountain resort area 90 minutes northeast of Ontario, offering skiing and snowboarding at Big Bear Mountain Resort in winter and exceptional hiking, fishing, and mountain biking in summer.
Big Bear Lake Resort Area
Joshua Tree National Park
A stunning desert national park where the Mojave and Colorado Deserts converge, approximately 75 miles east of Ontario, featuring iconic Joshua trees, dramatic boulder formations, and world-class stargazing.
Ontario International Airport (ONT)
The primary commercial airport serving Ontario, located 4 miles from downtown. IATA code: ONT. Connects primarily through Los Angeles International (LAX).
Location & Getting Around
Ontario is located in Taylor County, West Texas, approximately 180 miles west of Dallas-Fort Worth. Car rentals are available at ONT airport. The city is easily navigable by car with minimal traffic.
Climate & Weather
Ontario has a semi-arid climate with hot summers (avg. 95°F in July) and mild winters. The city receives about 23 inches of rain annually. Spring and fall offer the most pleasant visiting conditions.
Events & Festivals
Major annual events include the Children’s Art & Literacy Festival (June), Western Heritage Classic Rodeo (May), and Holiday in Ontario (December). Plan flights early around festival dates.
Travel Calendar
Best Time to Fly to Ontario
Airfare and weather guide for every month of the year
JAN
Low fares
FEB
Low fares
MAR
Moderate
APR
Moderate
MAY
Moderate
JUN
Peak season
JUL
Peak season
AUG
Peak season
SEP
Moderate
OCT
Moderate
NOV
Low fares
DEC
Moderate
Cheapest fares
Average fares
Peak / expensive
Routes
Popular Routes to Ontario (ONT)
Compare fares across the most-searched departure cities
| From | To | From Price | Type |
|---|---|---|---|
| Seattle (SEA) Seattle | Ontario (ONT) Ontario, California | from $79* | Round Trip |
| Las Vegas (LAS) Las Vegas | Ontario (ONT) Ontario, California | from $79* | Round Trip |
| Denver (DEN) Denver | Ontario (ONT) Ontario, California | from $89* | Round Trip |
| Portland (PDX) Portland | Ontario (ONT) Ontario, California | from $89* | Round Trip |
| Dallas (DFW) Dallas | Ontario (ONT) Ontario, California | from $109* | Round Trip |
| Chicago (ORD) Chicago | Ontario (ONT) Ontario, California | from $119* | Round Trip |
| Phoenix (PHX) Phoenix | Ontario (ONT) Ontario, California | from $84* | Round Trip |
| Salt Lake City (SLC) Salt Lake City | Ontario (ONT) Ontario, California | from $89* | Round Trip |
Airport Guide
Ontario Regional Airport (ONT)
Everything you need to know about flying into and out of Ontario’s main commercial airport.
IATA Code
ONT
Ontario
Distance to City
4 mi
From downtown Ontario
Main Hub Airlines
AA / 9E
American / Endeavor Air
Key Connections
ONT
Los Angeles International hub
Travel Tips
Tips for Finding Cheap Flights to Ontario
Insider strategies to cut your airfare to ONT significantly
01
Book 3–6 Weeks Ahead
For flights to Ontario, booking 3 to 6 weeks before departure typically yields the best fares. Prices usually rise sharply within 2 weeks of departure.
02
Fly on Tuesdays or Wednesdays
Mid-week departures to ONT are consistently 15–25% cheaper than weekend flights. Avoid Friday and Sunday travel for the lowest rates.
03
Consider Connecting via DFW
Most flights to Ontario connect through Los Angeles International (LAX). Booking this connection often unlocks more schedule options and better pricing. Booking a DFW connection often unlocks more schedule options and better pricing compared to nonstop alternatives.
04
Travel in January, February, or September
These are the off-peak months for Ontario air travel. Fares can be 30–40% lower than during the busy summer season.
05
Set Fare Alerts
Sign up for price drop notifications on your preferred Ontario route. Fares fluctuate daily and a well-timed alert can save you $50–$150 per ticket.
06
Use Flexible Date Search
If your travel schedule allows, check fares ±3 days around your ideal dates. A one-day shift in departure can sometimes cut prices dramatically.
Frequently Asked Questions
Cheap flight deals to Ontario (ONT) start from around $79 for round-trip tickets from Seattle and Las Vegas. ONT frequently offers lower fares than LAX for West Coast routes, making it an excellent value for Inland Empire travelers and visitors.
Ontario is served by Ontario International Airport (IATA: ONT), located approximately 4 miles from downtown Ontario. It serves the Inland Empire region — comprising San Bernardino and Riverside counties — as a convenient alternative to Los Angeles International Airport (LAX).
January, February, and November offer the lowest airfares to Ontario (ONT). Summer is peak season for Inland Empire travel. Fall (September-October) offers pleasant weather and the famous Los Angeles County Fair at the Pomona Fairplex nearby.
Ontario (ONT) is served by Southwest Airlines, American Airlines, Alaska Airlines, Delta Air Lines, Frontier Airlines, and Spirit with nonstop service to Seattle, Las Vegas, Denver, Portland, Dallas, Chicago, Phoenix, and Salt Lake City among other cities.
Book 3-5 weeks ahead for the best fares to Ontario. Always compare ONT against LAX and John Wayne (SNA) for the lowest total fare to the greater Los Angeles region. ONT frequently offers Southwest's best Bay Area and Pacific Northwest pricing.
Top attractions include Mount San Antonio hiking and skiing, Ontario Mills outlet shopping, the Pomona Fairplex LA County Fair, Temecula Wine Country (60 miles south), Big Bear Lake Resort (90 minutes north), and Joshua Tree National Park (75 miles east).
Yes - Ontario (ONT) has nonstop flights from Seattle, Las Vegas, Denver, Portland, Dallas, Chicago, Phoenix, Salt Lake City, and many other cities. Southwest Airlines operates the most routes from ONT with particularly competitive pricing for West Coast destinations.
Popular Destinations
The Most Popular Cities
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Las Vegas
LAS. Nevada
New York
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Washington
DCA · D.C.
Chicago
ORD · Illinois
San Francisco
SFO · California
Los Angeles
LAX · California
Orlando
MCO · Florida
Miami
MIA · Florida
Paris
CDG · France
London
LHR · UK
Rome
FCO · Italy
Amsterdam
AMS · Netherlands
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