$427+ Cheap flights from Long Beach to Ontario (LGB - ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
LGB — ONT
Jul 8 — Jul 151
1 adult, Economy
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Find cheap flights from Long Beach to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Long Beach to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Long Beach (LGB) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 3, 2025.
Round-trip from | $427 (Delta) |
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Find flight deals from Long Beach to Ontario
Cheapest flights from Long Beach to OntarioExplore the most affordable flight options available from Long Beach to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.
Explore the most affordable flight options available from Long Beach to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/215:08 pmLGB - ONT
1 stop15h 47mDelta
Sun 8/241:15 pmONT - LGB
1 stop22h 57mDelta
Deal found 7/1![Delta logo]()
$427
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/157:45 amLGB - ONT
1 stop13h 42mAlaska Airlines
Tue 7/229:00 amONT - LGB
1 stop34h 50mAlaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$2,643
Cheapflights Fare Finder
Customize your flight search to find flights from Long Beach to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2025.
Use the filters below to find and compare flights from Long Beach to Ontario that are best for you.
Fly from
Long Beach
Fly to
Ontario
Route
Depart
Return
Price
Long BeachOntario
LGB - ONT
LGBONT
Long Beach Municipal
Thu 8/21
5:08 pm-8:55 am
1 stop15h 47m
Ontario
Sun 8/24
1:15 pm-12:12 pm
1 stop22h 57m
$427
Long BeachOntario
LGB - ONT
LGBONT
Long Beach Municipal
Tue 7/15
7:45 am-9:27 pm
1 stop13h 42m
Ontario
Tue 7/22
9:00 am-7:50 pm
1 stop34h 50m
$2,643
Best time to book a flight from Long Beach to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Long Beach with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Long Beach to Ontario
What is the cheapest month to book a flight from Long Beach to Ontario?
Currently, August is the cheapest month in which you can book a flight from Long Beach to Ontario (average of $246). Flying from Long Beach to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated July 3, 2025.
Read reviews from past customers who have flown Alaska Airlines and Delta from Long Beach to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO