$135 Cheap Flights from Canada to Ontario International
One-way
Departing from
Canada
Going to
Ontario International
Ontario (ONT)
United States • April, 2026
67% AI deal score
$373 $135
This is the lowest one-way flight price found by RatePunk users in the last 24 hours for a flight going to Ontario International. Fares are subject to change and may not be available for all dates. (Data last updated 4/7/2026).
Popular airlines to Ontario International
American Airlines
Air Canada
Alaska Airlines, Inc.
Deutsche Luft Hansa
Flair Airlines
Executive Airlines
Porter Airlines
United Airlines
655,949 searches in the past 7 days on RatePunk
Flight deals up to 90% off
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Top Cheap Flight Deals from Canada to Ontario International
Recent round-trip flight deals to Ontario International
Sun, May 10 - Wed, May 13
Cheapest
Abbotsford (YXX) - Ontario (ONT)
WestJet airlines • 2 stops • Calgary (YYC), Las Vegas (LAS)
Ontario (ONT) - Abbotsford (YXX)
Frontier Airlines airlines • 2 stops • Las Vegas (LAS), Calgary (YYC)
$760
$492
-$268
35%
Thu, May 7 - Tue, May 12
Hamilton (YHM) - Ontario (ONT)
WestJet airlines • 2 stops • Calgary (YYC), Seattle (SEA)
Ontario (ONT) - Hamilton (YHM)
Alaska Airlines, Inc. airlines • 2 stops • Seattle (SEA), Calgary (YYC)
$248
$528
+$280
113%
Fri, Jun 19 - Sun, Jun 21
Nanaimo (YCD) - Ontario (ONT)
United Airlines airlines • 2 stops • Vancouver (YVR), San Francisco (SFO)
Ontario (ONT) - Nanaimo (YCD)
United Airlines airlines • 2 stops • Denver (DEN), Vancouver (YVR)
$542
Sun, May 24 - Tue, Jun 2
London (YXU) - Ontario (ONT)
United Airlines airlines • 2 stops • Toronto (YYZ), Denver (DEN)
Ontario (ONT) - London (YXU)
United Airlines airlines • 2 stops • Denver (DEN), Toronto (YYZ)
$785
$549
-$236
30%
Mon, Apr 20 - Tue, Apr 28
London (YXU) - Ontario (ONT)
WestJet airlines • 2 stops • Calgary (YYC), Las Vegas (LAS)
Ontario (ONT) - London (YXU)
Frontier Airlines airlines • 2 stops • Las Vegas (LAS), Calgary (YYC)
$785
$569
-$216
28%
Sun, May 3 - Thu, May 7
Abbotsford (YXX) - Ontario (ONT)
WestJet airlines • 2 stops • Calgary (YYC), San Francisco (SFO)
Ontario (ONT) - Abbotsford (YXX)
Frontier Airlines airlines • 2 stops • San Francisco (SFO), Calgary (YYC)
$760
$582
-$178
23%
The cheapest time to fly to Ontario International
Ready to jet to Ontario International on a budget? Check out these popular routes with surprisingly cheap fares (one-way prices):
Last-Minute Flights from Canada to Ontario International
Need to get to Ontario International ASAP? Even if you're booking a flight on short notice, there are often last-minute deals available:
Next 2 weeks deals
Last Minute Flight Deals!
Limited-time flight deals are available for Ontario, United States, with prices as low as $135 for departures within the next two weeks.
⌛ Last-Minute
Vancouver - ONT
A great last-minute steal for a cross-country flight.
Found 1 week ago
$135
one-way
⌛ Last-Minute
London - ONT
A great last-minute steal for a cross-country flight.
Found 1 week ago
$569
round-trip
Tip: If you don’t see your city listed, try a quick search anyway – new deals appear daily. Airlines sometimes slash prices a few days before departure to avoid empty seats.
Keep in mind, while last-minute fares can be lucky finds, booking about a month in advance generally yields cheaper flights on average. If you have flexibility, try to plan ahead. But if an unexpected trip to Ontario International pops up, check our site – you might get lucky with a sudden fare drop.
Facts About Flights from Canada to Ontario
To help you plan your journey, here are some quick Ontario flight facts and tips.
Ontario airports
Ontario International Airport (ONT): A Gateway to Southern California Located in the heart of Southern California, Ontario International Airport (ONT) offers a convenient and increasingly popular alternative to the larger and often more congested Los Angeles International Airport (LAX). ONT boasts a growing list of domestic and international destinations, served by a variety of airlines. Passengers appreciate its modern facilities, shorter security lines, and overall ease of navigation. The airport is easily accessible via major freeways and offers ample parking options, making it a stress-free starting point or arrival point for your travels. Whether you're visiting the Inland Empire, heading to nearby attractions, or connecting to destinations around the globe, Ontario International Airport provides a smooth and efficient travel experience.
Pro tip: search “Ontario (Any)” to see fares to all Ontario airports – sometimes one is cheaper than the others on your dates.
Insights for flights to Ontario International
Cheapest airport
Hamilton (YHM)
Looking for a low-key Ontario adventure? Hamilton Airport (YHM) might be your golden ticket! While it's smaller than Toronto Pearson, YHM offers a relaxed vibe and budget-friendly flights, making it a smart choice for savvy travelers. Plus, you're perfectly positioned to explore Hamilton's waterfalls and vibrant arts scene, or take a quick trip to Niagara Falls!
Nonstop vs. 1-stop
20+ cities
Ontario International Airport (ONT) is a secondary airport in the Los Angeles Metropolitan area, and it offers a variety of routes, with popular connections to cities like Sacramento, San Francisco, and Denver, making it a convenient option for travelers looking to bypass the hustle of LAX.
Number of airlines
30+ airlines
Hold on to your hats, travel enthusiasts! Ontario is served by over 30 airlines, including popular choices like Air Canada, WestJet, Porter, and Swoop.
Typical price range (round-trip)
Flights to Ontario: $200 - $800
Dreaming of Niagara Falls or bustling Toronto? Flights to Ontario typically range from $200 to $800, but prices can fluctuate. Expect higher fares during the summer and around major holidays, while you might snag a deal during the off-season in the spring or fall. Keep an eye out for promotional fares to save even more!
Flight frequency
2,000+ flights
Flights to Ontario operate daily, with increased frequency during the summer and holiday seasons. Expect more flight options during morning and afternoon hours, perfect for catching that sunrise or sunset!
ONT Airport Deal Stats
Current most discounted routes
Avg. most discounted routes (last 3 months)
ONT airport insights
Best days to catch a deal
Mon, Thur
Based on the data, Sunday is the best day to find a deal out of Ontario International Airport, followed by Saturday. You're more likely to find cheaper flights on the weekends compared to Mondays, which have the fewest deals.
Avg. deal survival time
14.5 hours
Deals from Ontario International airport typically last around 14.5 hours. This means you should book quickly when you find a deal you like!
Rare deal frequency
5 deals
We found 5 rare deals for flights departing from Ontario International Airport in the past month. These rare deals, which usually consist of mistake fares, special promotions, or ultra-discounts, received an AI Deal Score of 90+.
Average price drop
-45%
The average price drop for flights to Ontario International Airport is 45.0%, meaning you could save a significant amount on your trip. With such a substantial decrease, it's an ideal time to book flights to this destination.
Next 4 weeks: deal forecast
Ontario International Airport Forecast
The forecast for Ontario International Airport next month shows stable pricing with no major price drops expected. Travelers can anticipate average fares for flights booked in May.
Top 5 biggest price drops (last 3 months)
Found on April 2
Twin Falls - ONT
$705 → $91
87%
Found on March 30
Buenos Aires - ONT
$4,350 → $1,018
77%
Found on March 31
Jackson - ONT
$890 → $271
70%
Found on March 28
Seoul - ONT
$1,245 → $406
67%
Found on March 29
Tokyo - ONT
$1,350 → $499
63%
Check these nearby airports too
Looking for more options? These airports near ONT sometimes drop rare deals too:
Los Angeles International (LAX)
~3 rare deals/month
Palm Springs International (PSP)
~14 rare deals/month
John Wayne (SNA)
~4 rare deals/month
If you’re flexible with departure cities, it’s worth keeping an eye on nearby airports — especially LAX and PSP for long-haul deal surprises.
When Is the Best Time to Fly from Canada to Ontario International
Timing is everything when hunting for cheap flights. Here are data-backed insights on the best times to fly to Ontario International:
Cheapest month
January
Cheapest month
January is often the cheapest month to fly to Ontario, offering budget-friendly travel options. The city experiences cooler temperatures and fewer tourists during this time. You can explore Ontario's attractions without the crowds and enjoy potential savings on flights and accommodations.
Best day to book
Tuesday
Best day to book
Booking your flight on a Tuesday can often lead to significant savings. Airlines frequently release deals and discounts at the beginning of the week. By monitoring prices and booking on a Tuesday, you increase your chances of securing a cheaper flight to Ontario.
Cheapest days to fly
Wednesday
Cheapest days to fly
Flying to Ontario on a Wednesday is typically the most economical choice. Mid-week flights tend to be less expensive due to lower demand from business travelers. Opting for a Wednesday arrival can free up your budget for enjoying the many attractions Ontario has to offer.
Advance booking sweet spot
2 months
Advance booking sweet spot
The sweet spot for booking flights to Ontario is about two months in advance. This timeframe often strikes a balance between availability and price. Booking around two months out allows you to secure your preferred flight times and potentially snag a better deal before prices start to climb closer to the departure date.
Seasonal considerations
Distinct
Seasonal considerations
Ontario experiences distinct seasonal variations in flight prices. Summer months tend to be more expensive due to increased tourism. Meanwhile, the shoulder seasons (spring and fall) and winter months offer better deals for budget-conscious travelers.
TL;DR: To sum it up, January is the cheapest month to fly to Ontario, and booking flights on Tuesdays or flying on Wednesdays can save you money. Aim to book about two months in advance for the best deals. Keep in mind that seasonal changes impact flight prices. By planning ahead and being flexible with your travel dates, you can enjoy an affordable trip to Ontario.
Ontario Airports & Ground Transportation
One big question for travelers is which Ontario airport to fly into. Here’s a quick guide to Ontario’s airports and how to get to the city from each:
Ontario International Airport (ONT)
Ontario International Airport (ONT) is a convenient gateway to Southern California, offering a less hectic alternative to the bustling LAX. With two terminals, it provides a range of amenities including dining and shopping options to keep you occupied before your flight. The airport is located just about 4 miles east of downtown Ontario, making it super accessible. Getting to and from the city is a breeze with readily available taxis, ride-sharing services, and rental cars. Plus, the Metrolink train offers a direct connection for a smooth journey.
Tip: Arrive a little early to explore the local eateries; you might find your new favorite pre-flight snack!
Los Angeles International Airport (LAX)
Los Angeles International Airport (LAX) is one of the world's busiest airports. It offers tons of international and domestic flights. Located about 38 miles west of Ontario, it's a major hub with a vast array of shops, restaurants, and lounges. Getting to Ontario from LAX requires a bit of planning, with options like the FlyAway bus to Union Station followed by a Metrolink train, or ride-sharing and taxi services for a more direct route. Be sure to factor in LA's infamous traffic!
Tip: Consider traffic conditions when planning your trip to or from LAX, especially during peak hours!
John Wayne Airport (SNA)
John Wayne Airport (SNA), located in Orange County, is a smaller, more manageable airport that offers a convenient alternative to LAX. Located about 33 miles south of Ontario, SNA provides a more relaxed travel experience with a decent selection of amenities and services. Transportation options to Ontario include rental cars, ride-sharing, and shuttle services. While public transportation is available, it involves multiple transfers, so plan accordingly.
Tip: Check out the art exhibits throughout the terminal for a touch of local culture while you wait!
Other airports
Hey there, travel enthusiasts! While Ontario itself boasts its own airport, you might find yourself considering flying into neighboring cities like Los Angeles or Santa Ana. LAX, being a major international hub, often offers more flight options, but be prepared for a potentially lengthy commute to Ontario, with various transportation services available such as train, bus, and ride-sharing. John Wayne Airport in Santa Ana is closer to Ontario, it might present a more convenient alternative, but this requires a car rental or rideshare, which could be costly during peak hours.
Airport transfers
Ontario International Airport (ONT) offers a variety of transportation options, including ride-sharing services like Uber and Lyft, traditional taxi services, and public transportation via Omnitrans bus routes. For those who prefer to drive, numerous rental car agencies are conveniently located at the airport. With these choices, getting to and from ONT is a breeze!
What to Do in Ontario
Ontario isn’t just about getting there – it’s about enjoying the country once you arrive! Here are some top things to do in Ontario, organized by interest:
Sightseeing & landmarks
Ontario is filled with many sightseeing and landmarks options. From historic buildings to natural wonders, there is something to see for everyone! If you're into architecture, nature, or history, Ontario has it all!
Arts & culture
If you're an art lover, Ontario has many galleries and museums for you to explore, such as the Art Gallery of Ontario! And if you're into performing arts, check out a show at one of the many theaters and music venues.
Food & nightlife
Foodies, rejoice! Ontario has a diverse culinary scene, from farm-to-table restaurants to international cuisine. When the sun goes down, Ontario's nightlife comes alive with bars, clubs, and live music venues!
Shopping & fashion
Shopaholics, get ready to shop 'til you drop! Ontario has a mix of trendy boutiques, high-end department stores, and outlet malls.
Nearby getaways
Need a break from the city? Ontario has many nearby getaways, like Niagara Falls or Prince Edward County! Whether you're looking for a relaxing spa weekend, wine country escape, or outdoorsy adventure, Ontario has many options!
No matter your interest – be it art, food, nightlife, or nature – Ontario has something for everyone. And the best part? Many events and attractions refresh throughout the year, so there’s always something new to experience each visit.
Events in Ontario This Month
johnny ruiz & the escapers
Ticket listings for Johnny Ruiz & the Escapers at Farm House Collective in Riverside, California on 04/04/2026.
hernandez cc | kids club | sat | 7-12yrs - san bernardino, ca 2026
Participants will explore and expand their fine motor skills by creating various crafts using watercolor, acrylic paints, and tie-dye. Pre-registration is required for this engaging and hands-on workshop.
lytle creek cc | billiards club | tue | 13-17yrs
Participants aged 55 and over are invited to socialize and participate in our new card playing club. Pre-registration is required and can be completed online or in-person at the designated community center. Join us for an afternoon of friendly competition and camaraderie.
verdemont cc | robotics club | thu | 13-17yrs - san bernardino, ca 2026
Participants will explore and expand their creative passions and ideas while crafting unique handmade projects using paint, paper, and more. Pre-registration is required to unleash your inner artist.
Ontario Weather
Weather in Ontario
Thu, Apr 2
20%
21° 11°
20%
Fri, Apr 3
10%
26° 11°
10%
Sat, Apr 4
10%
30° 14°
10%
Sun, Apr 5
0%
30° 14°
0%
Mon, Apr 6
5%
27° 13°
5%
Tue, Apr 7
0%
26° 13°
0%
Wed, Apr 8
0%
23° 14°
0%
Here’s a quick look at the weather you can expect, plus this week’s forecast:
Seasons: Ontario experiences four distinct seasons. Spring (March-May) brings temperatures from 11.1°C to 29.8°C (52°F to 85.6°F) and blooming landscapes. Summer (June-August) is warm, ranging from 13°C to 29.8°C (55.4°F to 85.6°F). Autumn (September-November) has cooling temperatures from 10.3°C to 26.6°C (50.5°F to 80°F) and colorful foliage, and Winter (December-February) is cold with temperatures potentially below 0°C (32°F).
Rain: Precipitation in Ontario varies throughout the year. Rain is common in April, with probabilities ranging from 0% to 75%, potentially impacting travel with heavier showers. Snow is expected in winter months.
This week's forecast: This week in Ontario city, temperatures will range from 11.1°C to 29.8°C (52°F to 85.6°F). There will be partly cloudy days and mostly sunny days with the chance of rain, and there will be a day with heavy rain on Thursday.
(We update the weather forecast weekly so you know what to expect during your travel week. Always check a day or two before your flight for the most current conditions.)
Frequently Asked Questions About Flights to Ontario International
(Have more questions?) Feel free to reach out or check our comprehensive Ontario International travel guide. We’re here to help make your flight to Ontario International (and the trip itself) as smooth as possible.
Pro Tips for Finding Cheap Flights to Ontario International
Finally, to wrap up, here’s a cheat sheet of pro tips that experienced travelers use to save on Ontario International flights:
Be Flexible with Your Dates: Flying on Tuesdays or Wednesdays is often cheaper than flying on weekends. Plus, who doesn't love a mid-week getaway?
Consider Alternative Airports: Ontario International Airport (ONT) isn't the only option! Check flights into nearby airports like LAX or even smaller regional ones for potential savings.
Fly During the Off-Season: Avoid peak travel times like summer and holidays. You'll find better deals and fewer crowds during the spring or fall. Hello, peaceful vacation!
Set Up Price Alerts on RatePunk: Don't miss out on flash sales! RatePunk will notify you the instant prices drop for your desired dates, ensuring you snag the cheapest tickets before anyone else.
Embrace the Art of the Stopover: Non-direct flights can save you a bundle! A short layover might be worth it for the extra cash in your pocket. Think of it as a mini-adventure!
Bundle Up for Savings: Consider booking your flight and hotel together. Package deals often come with discounts, making your trip more affordable and convenient. Easy peasy!
Clear Your Browser's Cookies: Airlines sometimes track your searches and increase prices. Clear those cookies or use incognito mode to see the lowest fares available. Sneaky, but effective!
Use Budget Airlines: Budget airlines like Southwest can offer significant savings, especially if you're traveling light. Just be sure to factor in any extra fees for baggage or seat selection.
Book in Advance (But Not Too Early!): The sweet spot for booking domestic flights is usually a few months in advance. Don't wait until the last minute, but booking too early might not get you the best price either.
Redeem Those Travel Rewards: If you have credit card points or airline miles, now's the time to use them! They can significantly reduce the cost of your flight, or even make it free. Cha-ching!
By keeping these tips in mind, you’ll be well-equipped to find the cheapest flights to Ontario International and make the most of your travel budget. After all, the more you save on your flight, the more you can spend on a Broadway show, a nice meal, or an extra tour in Ontario International! 🎉✈️