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$343+ Cheap flights from Long Beach to Ontario (LGB - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
LGB — ONT
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
1 adult, Economy
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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 October 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,262
(Alaska Airlines)

One-way from

$343
(Delta)
Provider with most accurate pricing for Long Beach Municipal-Ontario flight deals.
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Provider most trusted by Cheapflights users for Long Beach Municipal-Ontario flights.
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From Long Beach Municipal to Ontario
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One-way flight from Long Beach Municipal to Ontario
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Find flight deals from Long Beach to Ontario

Cheapest flights from Long Beach to Ontario
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 October 2, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/2. 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.
Thu 10/307:42 amLGB - ONT
1 stop33h 32mAlaska Airlines
Thu 11/69:47 amONT - LGB
1 stop34h 00mAlaska Airlines
Deal found 10/2$1,262
This Alaska Airlines deal was found by Cheapflights users on 10/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:25 amLGB - ONT
1 stop13h 45mAlaska Airlines
Sat 10/411:07 amONT - LGB
1 stop32h 38mAlaska Airlines
Deal found 10/1$1,368
This Alaska Airlines deal was found by Cheapflights users on 10/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/147:42 amLGB - ONT
1 stop33h 32mAlaska Airlines
Sun 11/169:47 amONT - LGB
1 stop34h 00mAlaska Airlines
Deal found 10/1$4,303

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 October 2, 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 10/30

7:42 am-5:14 pm

1 stop33h 32m

Ontario

Thu 11/6

9:47 am-7:47 pm

1 stop34h 00m

$1,262

Long BeachOntario

LGB - ONT

LGBONT

Long Beach Municipal

Fri 11/14

7:42 am-5:14 pm

1 stop33h 32m

Ontario

Sun 11/16

9:47 am-7:47 pm

1 stop34h 00m

$4,303

Long BeachOntario

LGB - ONT

LGBONT

Long Beach Municipal

Mon 3/9

7:10 am-11:52 pm

1 stop16h 42m

$343

Long BeachOntario

LGB - ONT

LGBONT

Long Beach Municipal

Tue 3/10

12:59 pm-11:52 pm

1 stop10h 53m

$343

Long BeachOntario

LGB - ONT

LGBONT

Long Beach Municipal

Thu 3/12

7:10 am-4:19 pm

1 stop9h 09m

$343

Long BeachOntario

LGB - ONT

LGBONT

Long Beach Municipal

Wed 3/11

12:59 pm-11:52 pm

1 stop10h 53m

$343

Long BeachOntario

LGB - ONT

LGBONT

Long Beach Municipal

Sun 3/8

7:10 am-11:52 pm

1 stop16h 42m

$343

Long BeachOntario

LGB - ONT

LGBONT

Long Beach Municipal

Sat 3/7

7:10 am-10:52 pm

1 stop15h 42m

$381

Long BeachOntario

LGB - ONT

LGBONT

Long Beach Municipal

Fri 3/13

9:00 am-9:55 pm

1 stop12h 55m

$431

Long BeachOntario

LGB - ONT

LGBONT

Long Beach Municipal

Mon 2/16

9:00 am-9:55 pm

1 stop12h 55m

$571

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/2

Compare providers for flights from Long Beach to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Long Beach to Ontario in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Long Beach-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Long Beach-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Long Beach-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Long Beach-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Long Beach-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $327). 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.

Related info for your journey

Find useful and relevant information for your journey from Long Beach to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Long Beach to Ontario?

    Departing from Long Beach to Ontario will take you 33h 32m. Airlines will cover a distance of 36 mi.

  • Can I find deals for flights from Long Beach to Ontario that include hotel bookings?

    Yes. In addition to deals on Long Beach to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Long Beach to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Long Beach to Ontario.

  • Can I find deals for business class flights from Long Beach to Ontario?

    Yes. Cheapflights offers flight deals from Long Beach to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $327). 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.

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