Lowest Prices
Find the lowest ONT airfares by comparing hundreds of airlines and agencies.
Good to Know: Flights to ONT
Useful information for finding cheap flights to Ontario International and booking your next trip
Cheapest Round Trip Flight
$612
Delta Airlines
• 1 stop
• 15h 8m
Aug 11 – Aug 12
The cheapest round trip flight from Washington to Ontario (DCA-ONT-DCA) is currently $612
Cheapest One way Flight
$251
Alaska Airlines
• 1 stop
• 14h 10m
Aug 03
The cheapest one way flight from Denver to Ontario (DEN-ONT) is currently $251
Cheapest Direct Flight
$327
Frontier Airlines
• nonstop
• 5h 12m
Nov 08
The cheapest nonstop flight from Dallas to Ontario (DFW-ONT) is currently $327
Fastest Flight
3h 27m
The fastest nonstop flight from Boise to Ontario (BOI-ONT) takes 3h 27m
Top Airlines Flying to Ontario International (ONT)
Best Flight Deals to Ontario
Identify the most efficient round-trip flights to Ontario. We present options balancing cost and convenience for your return journey.
Aug 11 - Aug 12, Economy
Washington → Ontario
15h 8m
1:45 PM - 7:53 PM • 1 stop
Washington → Ontario
14h 8m
12:00 PM - 11:48 PM • 1 stop
Delta Airlines
Aug 04 - Aug 04, Economy
Boise → Ontario
12h 20m
6:00 AM - 12:40 PM • 1 stop
Boise → Ontario
7h 20m
4:45 PM - 10:25 PM • 1 stop
Southwest Airlines
Aug 04 - Aug 04, Economy
Boise → Ontario
10h 35m
7:05 AM - 12:40 PM • 2 stops
Boise → Ontario
7h 10m
4:45 PM - 10:15 PM • 1 stop
Southwest Airlines
Aug 04 - Aug 04, Economy
Boise → Ontario
12h 26m
6:23 AM - 1:09 PM • 1 stop
Boise → Ontario
8h 58m
5:26 PM - 12:04 AM • 1 stop
Alaska Airlines
Aug 03 - Aug 08, Economy
Boise → Ontario
13h 44m
1:06 PM - 8:30 PM • 1 stop
Boise → Ontario
8h 36m
5:32 PM - 11:48 PM • 1 stop
Alaska Airlines
For travel requiring no set return, access available one-way flights to Ontario (ONT). These options support extended stays or open-ended plans.
Need to travel to Ontario soon? View current last-minute flight options to ONT for spontaneous or pressing plans.
Aug 04 - Aug 04, Economy
Boise → Ontario
12h 20m
6:00 AM - 12:40 PM • 1 stop
Boise → Ontario
7h 20m
4:45 PM - 10:25 PM • 1 stop
Southwest Airlines
Aug 04 - Aug 04, Economy
Boise → Ontario
10h 35m
7:05 AM - 12:40 PM • 2 stops
Boise → Ontario
7h 10m
4:45 PM - 10:15 PM • 1 stop
Southwest Airlines
Aug 04 - Aug 04, Economy
Boise → Ontario
12h 26m
6:23 AM - 1:09 PM • 1 stop
Boise → Ontario
8h 58m
5:26 PM - 12:04 AM • 1 stop
Alaska Airlines
Aug 03 - Aug 08, Economy
Boise → Ontario
9h 18m
6:13 PM - 11:11 PM • 1 stop
Boise → Ontario
8h 36m
5:32 PM - 11:48 PM • 1 stop
Alaska Airlines
Aug 03 - Aug 08, Economy
Boise → Ontario
13h 44m
1:06 PM - 8:30 PM • 1 stop
Boise → Ontario
8h 36m
5:32 PM - 11:48 PM • 1 stop
Alaska Airlines
Maximize your time in Ontario, not in transit. Discover non-stop direct flights to ONT for the quickest, most straightforward journey to the Strip.
Nov 08 - Nov 24, Economy
Dallas → Ontario
5h 12m
6:00 AM - 7:12 AM • nonstop
Dallas → Ontario
5h 4m
12:30 AM - 5:34 AM • nonstop
Frontier Airlines
Nov 08 - Nov 24, Economy
Dallas → Ontario
5h 5m
9:05 PM - 10:10 PM • nonstop
Dallas → Ontario
5h
5:05 AM - 10:05 AM • nonstop
Southwest Airlines
Jan 09 - Jan 25, Economy
Chicago → Ontario
7h 24m
4:00 PM - 6:44 PM • nonstop
Chicago → Ontario
6h 55m
7:00 AM - 1:15 PM • nonstop
United Airlines
Aug 04 - Aug 04, Economy
Boise → Ontario
3h 47m
7:06 AM - 8:33 AM • nonstop
Boise → Ontario
3h 28m
6:57 PM - 10:05 PM • nonstop
United Airlines
Aug 03 - Aug 08, Economy
Boise → Ontario
3h 39m
6:51 PM - 8:10 PM • nonstop
Boise → Ontario
3h 28m
6:57 PM - 10:05 PM • nonstop
American Airlines
FAQs on Flights to Ontario (ONT)
Which airlines fly to Ontario?
Airlines flying the most to Ontario (ONT)
What is the cheapest flight to ONT Airport?
In the past couple of days, the cheapest tickets to ONT were found on WN : USD 292
What are the most popular origin to Ontario (ONT)?
Travelers frequently travel from Boise, Buffalo, Dallas, Washington, Denver, Dallas, Chicago to Ontario (ONT)
Essential Information for Booking Flights from Ontario (ONT) - AI Insights
What's the cheapest airline to ont?
Frontier Airlines offers budget-friendly flights from Ontario International Airport (ONT) to your destination. As a one-way trip with no stops, you can expect affordable fares. Booking in advance will help you secure the best rates.
What's the popular airline to fly to ont?
Southwest Airlines offers budget-friendly flights to Ontario International Airport (ONT) for your one-way trip. As a 5-passenger group, you can expect affordable airfares on this route. Booking in advance is recommended, with 26 days prior to travel being an optimal time for securing Low Fares.
What's the cheapest day of the week to fly to ont?
The cheapest day of the week to fly from Ontario International Airport (ONT) is Sunday. Flying on Sundays can result in budget-friendly flights, making it an ideal option for travelers looking for affordable airfares. Low fares and savings are often available during this time.
What's the cheapest month to fly to ont?
The cheapest month to fly from your destination to Ontario International Airport is September. You can find budget-friendly flights during this time. Look for airlines offering low fares on their websites or through airfare comparison platforms like fareleaders.com.
Which airline/airlines fly to ont?
The airlines that fly to Ontario International Airport are Viva Aerobus, JetBlue Airways, Alaska Airlines, United Airlines, Delta Airlines, American Airlines, WestJet Airlines, Frontier Airlines, Copa Airlines, and Hawaiian Airlines.
What are the available flights from Ontario International airport to other destinations?
You can find flights from Ontario International Airport to various destinations on fareleaders.com. Simply visit our website, enter your travel dates and preferred destination, and we will show you the best available options.
How can I book my airfare on fareleaders.com for a one-way trip?
Booking a one-way trip on fareleaders.com is easy! Just click on the 'Book Now' button, select your travel dates and preferred airline, and fill in your passenger details. You will receive instant confirmation of your booking.
Can I get the best airfares and fares by booking in advance on your website?
Yes, booking in advance is a great way to secure the best airfares and fares on fareleaders.com. Our website allows you to compare prices across different airlines and book in advance to save money.
How do I look for travel deals and discounts on your airline destinations page?
To find travel deals and discounts on our airline destinations page, simply click on the 'Deals' tab and browse through our curated list of offers. You can also set up price alerts to notify you when prices drop.
What is the process of searching for flights via fareleaders.com for a weekend getaway?
Searching for flights via fareleaders.com for a weekend getaway is easy! Simply enter your travel dates, preferred destination, and number of passengers, and our website will show you the best available options. You can also filter results by airline, price, and departure time.
Airport Information: Ontario International (ONT)
- IATA Code
- ONT
- Name
- Ontario International
- City
- Ontario
- Country
- US
- Latitude
- 34.055999755859375
- Longitude
- -117.60099792480469
More Flight Options to Ontario, CA
Flights from Ontario (ONT)
to Seattle (SEA)
Flights from Ontario (ONT)
to Seattle (SEA)
Flights from Ontario (ONT)
to San Francisco (SFO)
Flights from Ontario (ONT)
to San Francisco (SFO)
Flights from Ontario (ONT)
to New York (JFK)
Flights from Ontario (ONT)
to Honolulu (HNL)
Flights from Ontario (ONT)
to Honolulu (HNL)
Flights from Ontario (ONT)
to Minneapolis (MSP)
Flights from Ontario (ONT)
to Minneapolis (MSP)
Flights from Ontario (ONT)
to Portland (PDX)
Flights from Ontario (ONT)
to Portland (PDX)
Flights from Ontario (ONT)
to Salt Lake City (SLC)
Flights from Ontario (ONT)
to Salt Lake City (SLC)
Flights from Ontario (ONT)
to Las Vegas (LAS)
Flights from Ontario (ONT)
to Las Vegas (LAS)
Flights from Ontario (ONT)
to Charlotte (CLT)
Flights from Ontario (ONT)
to Charlotte (CLT)
Flights from Ontario (ONT)
to Manila (MNL)
Flights from Ontario (ONT)
to Manila (MNL)
Flights from Ontario (ONT)
to Denver (DEN)
Flights from Seattle (SEA)
to Ontario (ONT)
Flights from Seattle (SEA)
to Ontario (ONT)
Flights from Salt Lake City (SLC)
to Ontario (ONT)
Flights from Salt Lake City (SLC)
to Ontario (ONT)
Flights from Dallas (DAL)
to Ontario (ONT)
Flights from Dallas (DAL)
to Ontario (ONT)
Flights from Baltimore (BWI)
to Ontario (ONT)
Flights from Baltimore (BWI)
to Ontario (ONT)
Flights from Houston (HOU)
to Ontario (ONT)
Flights from Houston (IAH)
to Ontario (ONT)
Flights from Houston (IAH)
to Ontario (ONT)
Flights from Boston (BOS)
to Ontario (ONT)
Flights from Boston (BOS)
to Ontario (ONT)
Flights from New York (LGA)
to Ontario (ONT)
Flights from New York (LGA)
to Ontario (ONT)
Flights from Boise (BOI)
to Ontario (ONT)
Flights from Boise (BOI)
to Ontario (ONT)
Flights from Oakland (OAK)
to Ontario (ONT)
Flights from Dallas (DFW)
to Ontario (ONT)
Flights from Dallas (DFW)
to Ontario (ONT)
Why Fareleaders for Flights to ONT
New Deals Everyday
Never miss a deal on ONT flights—we update prices daily to bring you the best airfares.
No Service Fees
Compare hundreds of ONT flights and find the best deals without any added service charges.