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CA $374 Cheap Flights from Ontario Intl. Airport (ONT) to Carlsbad (CLD)

View CA $374 flight on Sun, Feb 7, 2027Opens in a new window

Popular airlines from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar)

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Cheap flights from Ontario Intl. Airport (ONT) to Carlsbad (CLD)

Prices were available within the past 7 days and start at CA $374 for one-way flights and CA $746 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Feb 7 - Mon, Feb 8
ONT
Ontario
CLD
Carlsbad
CA $746 Roundtrip, found 1 hour ago
CA $746
Roundtrip
found 1 hour ago
Select United flight, departing Sun, Feb 7 from Ontario to Carlsbad, returning Mon, Feb 8, priced at CA $746 found 1 hour ago
United
Sun, Feb 7 - Mon, Feb 8
ONT
Ontario
CLD
Carlsbad
CA $771 Roundtrip, found 3 days ago
CA $771
Roundtrip
found 3 days ago
Select United flight, departing Sun, Feb 7 from Ontario to Carlsbad, returning Mon, Feb 8, priced at CA $771 found 3 days ago
United
Sun, Feb 7 - Mon, Feb 8
ONT
Ontario
CLD
Carlsbad
CA $803 Roundtrip, found 1 hour ago
CA $803
Roundtrip
found 1 hour ago
Select United flight, departing Sun, Feb 7 from Ontario to Carlsbad, returning Mon, Feb 8, priced at CA $803 found 1 hour ago
United
Sun, Feb 7 - Mon, Feb 8
ONT
Ontario
CLD
Carlsbad
CA $874 Roundtrip, found 1 hour ago
CA $874
Roundtrip
found 1 hour ago
Select United flight, departing Sun, Feb 7 from Ontario to Carlsbad, returning Mon, Feb 8, priced at CA $874 found 1 hour ago
United
Sun, Feb 7 - Mon, Feb 8
ONT
Ontario
CLD
Carlsbad
CA $920 Roundtrip, found 3 days ago
CA $920
Roundtrip
found 3 days ago
Select United flight, departing Sun, Feb 7 from Ontario to Carlsbad, returning Mon, Feb 8, priced at CA $920 found 3 days ago
United
Sun, Feb 7 - Mon, Feb 8
ONT
Ontario
CLD
Carlsbad
CA $959 Roundtrip, found 1 hour ago
CA $959
Roundtrip
found 1 hour ago
Select United flight, departing Sun, Feb 7 from Ontario to Carlsbad, returning Mon, Feb 8, priced at CA $959 found 1 hour ago

Frequently asked questions

How much does a flight from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar) cost?
You can find one-way and return flights from ONT to CLD with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when ONT to CLD ticket fares go up or down.
What is the cheapest month to fly from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar)?
The cheapest months to fly from ONT to CLD are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar)?
Enter ONT to CLD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar)?
To find a cheap flight from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar)?
There are approximately 7 connecting flights per day from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar). Some common connection points include Sky Harbor Intl. (PHX), San Francisco Intl. (SFO), and Denver Intl. (DEN).
What is the earliest flight from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from ONT to CLD. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar)?
There are no nonstop flights from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar). For this route, which covers a distance of about 108 kilometres, flights with one stop typically take around 5 hours 30 minutes. Flights with two or more stops usually take longer, averaging about 14 hours 30 minutes. Keep in mind that actual travel times can vary based on layover durations and other factors.
Can you fly business or first class from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar)?
Select the "Business class" and "First class" filters when looking for ONT to CLD flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar) flight with Expedia?
It's easy to earn miles on a Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar) at the last minute?
Typically, booking a last minute flight from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar) flight and hotel package?
Securing a Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar)?
If you booked your Ontario Intl. Airport (ONT) to Carlsbad, CA (CLD-McClellan-Palomar) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ontario Intl. Airport
Destination airport
McClellan-Palomar
Airlines serving
United
Roundtrip price
CA $745
Distance
107 km

Book with confidence

Los Angeles to Carlsbad Flights

The easy way to book your flights from Ontario Intl. Airport to Carlsbad 

With Expedia, it’s simple to find and book flights to Carlsbad from Ontario Intl. Airport whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to McClellan-Palomar, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Ontario Intl. Airport to Carlsbad today, tomorrow, or this week.  

 

Save dollars with cheap flights from Ontario Intl. Airport, ONT to McClellan-Palomar, CLD 

Sort your search results by price to find great deals on your flight from Ontario Intl. Airport to Carlsbad—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Carlsbad from Ontario Intl. Airport currently is just CA $746 rising to CA $1,003.  

Here are more money-saving tips: 

  • Fly in February when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Carlsbad  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Carlsbad from Ontario Intl. Airport 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Carlsbad with Expedia today.

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