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$244+ Cheap flights from Eureka, CA to Ontario (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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
ACV — ONT
dic. 4 — dic. 111
jue. 12/4
jue. 12/11
1 adult, Economy
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Cheap flight deals from Eureka to Ontario

Keep the following information in mind while searching for Eureka to Ontario flight deals. Data was last updated noviembre 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$244
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$299
Provider with most accurate pricing for Arcata Eureka-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Arcata Eureka-Los Angeles flights.
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From Eureka to Ontario
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Highest demand for flights based on searches. 12% potential increase in price ($51 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Eureka to Ontario

Cheapest flights from Eureka to Ontario
Explore the most affordable flight options available from Eureka to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 4, 2025.

This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/94:10 pmACV - ONT
1 stop6h 39mUnited Airlines
mar. 12/166:00 amONT - ACV
1 stop4h 55mUnited Airlines
Deal found 11/2$244
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/92:15 pmACV - ONT
1 stop3h 22mUnited Airlines
sáb. 12/136:00 amONT - ACV
1 stop4h 55mUnited Airlines
Deal found 11/1$314
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/288:20 amACV - ONT
1 stop4h 17mUnited Airlines
jue. 12/116:00 amONT - ACV
1 stop4h 55mUnited Airlines
Deal found 11/3$359
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/132:15 pmACV - ONT
1 stop3h 19mUnited Airlines
dom. 11/166:00 amONT - ACV
1 stop4h 55mUnited Airlines
Deal found 11/1$374
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/134:10 pmACV - ONT
1 stop6h 39mUnited Airlines
vie. 12/196:39 pmONT - ACV
1 stop3h 49mUnited Airlines
Deal found 11/3$404
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/66:45 pmACV - ONT
1 stop4h 06mUnited Airlines
lun. 11/106:00 amONT - ACV
1 stop4h 55mUnited Airlines
Deal found 11/3$419
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/28:15 amACV - ONT
1 stop4h 02mUnited Airlines
mar. 12/96:00 amONT - ACV
1 stop4h 55mUnited Airlines
Deal found 11/2$425
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/46:45 pmACV - ONT
1 stop4h 04mUnited Airlines
dom. 12/76:00 amONT - ACV
1 stop4h 55mUnited Airlines
Deal found 11/1$428
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/312:30 pmACV - ONT
1 stop8h 14mUnited Airlines
sáb. 11/86:00 amONT - ACV
1 stop4h 55mUnited Airlines
Deal found 11/2$434
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/183:50 pmACV - ONT
1 stop20h 47mUnited Airlines
sáb. 11/226:00 amONT - ACV
1 stop4h 55mUnited Airlines
Deal found 11/3$453
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/288:20 amACV - ONT
1 stop4h 17mUnited Airlines
vie. 12/125:05 amONT - ACV
1 stop8h 25mUnited Airlines
Deal found 11/3$470

Cheapflights Fare Finder

 
Customize your flight search to find flights from Eureka 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 noviembre 4, 2025.
Use the filters below to find and compare flights from Eureka to Ontario that are best for you.

Fly from

Eureka

Fly to

Ontario

Route

Depart

Return

Price

ArcataOntario

ACV - ONT

ACVONT

Arcata Eureka

mar. 12/9

2:15 pm-5:37 pm

1 stop3h 22m

Ontario

sáb. 12/13

6:00 am-10:55 am

1 stop4h 55m

$314

ArcataOntario

ACV - ONT

ACVONT

Arcata Eureka

vie. 1/23

7:15 am-12:17 pm

1 stop5h 02m

Ontario

mar. 1/27

6:00 am-10:52 am

1 stop4h 52m

$314

ArcataOntario

ACV - ONT

ACVONT

Arcata Eureka

sáb. 1/17

7:15 am-12:17 pm

1 stop5h 02m

Ontario

dom. 2/15

6:37 pm-10:45 pm

1 stop4h 08m

$314

ArcataOntario

ACV - ONT

ACVONT

Arcata Eureka

sáb. 11/15

6:45 pm-10:51 pm

1 stop4h 06m

Ontario

lun. 11/17

6:00 am-10:55 am

1 stop4h 55m

$374

ArcataOntario

ACV - ONT

ACVONT

Arcata Eureka

vie. 11/14

6:45 pm-10:51 pm

1 stop4h 06m

Ontario

lun. 11/17

6:00 am-10:55 am

1 stop4h 55m

$374

ArcataOntario

ACV - ONT

ACVONT

Arcata Eureka

sáb. 12/13

4:10 pm-10:49 pm

1 stop6h 39m

Ontario

vie. 12/19

6:39 pm-10:28 pm

1 stop3h 49m

$404

ArcataOntario

ACV - ONT

ACVONT

Arcata Eureka

sáb. 11/8

6:45 pm-10:51 pm

1 stop4h 06m

Ontario

lun. 11/10

5:05 am-1:30 pm

1 stop8h 25m

$419

ArcataOntario

ACV - ONT

ACVONT

Arcata Eureka

mar. 12/2

8:15 am-12:17 pm

1 stop4h 02m

Ontario

mar. 12/9

6:00 am-10:55 am

1 stop4h 55m

$425

ArcataOntario

ACV - ONT

ACVONT

Arcata Eureka

sáb. 11/8

6:45 pm-10:51 pm

1 stop4h 06m

Ontario

dom. 11/9

5:05 am-1:30 pm

1 stop8h 25m

$434

ArcataOntario

ACV - ONT

ACVONT

Arcata Eureka

vie. 11/28

2:15 pm-7:41 pm

1 stop5h 26m

Ontario

lun. 12/29

6:39 pm-10:28 pm

1 stop3h 49m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 17 results
1
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Best time to book a flight from Eureka to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Eureka 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 Eureka to Ontario

What is the cheapest month to book a flight from Eureka to Ontario?

Currently, September is the cheapest month in which you can book a flight from Eureka to Ontario (average of $76). Flying from Eureka to Ontario in February is currently the most expensive (average of $196). 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 noviembre 4, 2025.
Get a feel of what it's like to fly with United Airlines from Eureka to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,997 reviews

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
United Airlines
7.4
Good
8,997 reviews
United Airlines
7.4
Good
8,997 reviews

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

Related info for your journey

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

  • What airport do you fly into for flights to Ontario from Eureka?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Eureka. On average, Ontario has 0 inbound flights from Eureka per day from 1 airline. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How long is the flight from Eureka to Ontario?

    There are many flights that can get you from Eureka to Ontario in 3h 22m. Fly via United Airlines to get the fastest option. There are 595 mi between Eureka and Ontario.

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

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

  • How can I find direct flights from Eureka to Ontario?

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

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

    Yes. Cheapflights offers flight deals from Eureka 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 Eureka to Ontario?

    Currently, September is the cheapest month in which you can book a flight from Eureka to Ontario (average of $76). Flying from Eureka to Ontario in February is currently the most expensive (average of $196). 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.

See more FAQs

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Alternative routes for Eureka to Ontario

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Top airline flying from Eureka to Ontario

Discover the top airline that operate flights from Eureka to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$281Average$704FlexibilityNo cancel feeOn-time69%

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