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Eureka

$334+ Cheap flights from O'Hare Intl (ORD) to Eureka, CA

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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — RDD
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from O'Hare Intl to Eureka

Keep the following information in mind while searching for O'Hare Intl to Eureka flight deals. Data was last updated septiembre 11, 2025.

Round-trip from

$334
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$434
From Chicago O'Hare Intl to Eureka
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Highest demand for flights based on searches. 12% potential increase in price ($79 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from O'Hare Intl to Eureka

Cheapest flights from O'Hare Intl to Eureka
Explore the most affordable flight options available from O'Hare Intl to Eureka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/11. 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. 9/266:15 amORD - ACV
1 stop6h 42mUnited Airlines
mié. 10/12:15 pmACV - ORD
1 stop6h 57mUnited Airlines
Deal found 9/11$334
This lol.travel deal was found by Cheapflights users on 9/10. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/32:35 pmORD - ACV
1 stop9h 40mUnited Airlines
sáb. 10/112:15 pmACV - ORD
1 stop6h 57mUnited Airlines
Deal found 9/10$355
This United Airlines deal was found by Cheapflights users on 9/10. 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.
mié. 9/247:10 amORD - ACV
1 stop10h 07mUnited Airlines
sáb. 9/274:00 pmACV - ORD
1 stop6h 54mUnited Airlines
Deal found 9/10$424
This United Airlines deal was found by Cheapflights users on 9/10. 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. 10/256:15 amORD - ACV
1 stop6h 37mUnited Airlines
vie. 10/313:50 pmACV - ORD
2 stops15h 50mUnited Airlines
Deal found 9/10$442
This United Airlines deal was found by Cheapflights users on 9/11. 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.
mié. 10/226:15 amORD - ACV
1 stop6h 37mUnited Airlines
mié. 10/294:13 pmACV - ORD
1 stop11h 03mUnited Airlines
Deal found 9/11$447
This United Airlines deal was found by Cheapflights users on 9/11. 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. 9/124:30 pmORD - ACV
1 stop7h 44mUnited Airlines
dom. 9/142:13 pmACV - ORD
1 stop8h 32mUnited Airlines
Deal found 9/11$574

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl to Eureka 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 septiembre 11, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Eureka that are best for you.

Fly from

O'Hare Intl

Fly to

Eureka

Route

Depart

Return

Price

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

vie. 9/26

6:15 am-10:57 am

1 stop6h 42m

Arcata Eureka

mié. 10/1

2:15 pm-11:12 pm

1 stop6h 57m

$334

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

sáb. 3/7

6:15 am-2:29 pm

1 stop10h 14m

Arcata Eureka

mar. 3/10

3:41 pm-12:58 am

1 stop7h 17m

$374

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

mié. 9/24

7:10 am-3:17 pm

1 stop10h 07m

Arcata Eureka

sáb. 9/27

4:00 pm-12:54 am

1 stop6h 54m

$424

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

sáb. 10/25

6:15 am-10:52 am

1 stop6h 37m

Arcata Eureka

vie. 10/31

3:50 pm-9:40 am

2 stops15h 50m

$442

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

mié. 10/22

6:15 am-10:52 am

1 stop6h 37m

Arcata Eureka

mié. 10/29

4:13 pm-5:16 am

1 stop11h 03m

$447

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

vie. 10/3

2:35 pm-10:15 pm

1 stop9h 40m

Arcata Eureka

sáb. 10/11

2:15 pm-4:37 am

2 stops12h 22m

$496

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

vie. 10/10

9:26 pm-3:17 pm

1 stop19h 51m

Arcata Eureka

lun. 10/13

6:45 pm-5:55 am

1 stop9h 10m

$588

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

mié. 9/24

9:27 pm-1:29 pm

1 stop18h 02m

$497

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

vie. 9/26

3:40 pm-10:15 pm

2 stops8h 35m

$654

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from O'Hare Intl to Eureka

Have a flexible travel schedule? Discover the best time to fly to Eureka from O'Hare Intl 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 Chicago O'Hare Intl Airport to Eureka

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Eureka?

Currently, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Eureka (average of $340). Flying from Chicago O'Hare Intl Airport to Eureka in June is currently the most expensive (average of $503). 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.

What is the cheapest time of day to fly from ORD to EU9?

Find hourly flight availability from O'Hare Intl to Eureka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

When flying from Chicago O'Hare Intl Airport to Eureka, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Eureka

Get insights into the airlines that provide service to Eureka. 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 Eureka. Reviews last updated septiembre 11, 2025.
See what other customers who have flown with United Airlines from Chicago O'Hare Intl Airport to Eureka have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Ruth,Dec 2024

ORD - AMS

United Airlines flights seem to always use a bus to/from the boarding gate to the plane. Can they not get their own gate? This time there was no lift when leaving the plane and people in wheelchairs somehow had to climb down the steps to the ground to get to the bus. I udon’t know how some managed that!

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Eureka. 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 Chicago O'Hare Intl Airport to Eureka?

    United Airlines can get you from Chicago O'Hare Intl Airport to Eureka in just under 6h 42m. Your travel time can differ by up to . There are 1860 mi between Chicago O'Hare Intl Airport and Eureka.

  • Can I find deals for flights from O'Hare Intl to Eureka that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Eureka flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Eureka?

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

  • Can I find deals for business class flights from O'Hare Intl to Eureka?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Eureka 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 Chicago O'Hare Intl Airport to Eureka?

    Currently, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Eureka (average of $340). Flying from Chicago O'Hare Intl Airport to Eureka in June is currently the most expensive (average of $503). 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 O'Hare Intl to Eureka

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from O'Hare Intl to Eureka

Discover the top airline that operate flights from O'Hare Intl to Eureka. 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$284Average$517FlexibilityNo cancel feeOn-time69%

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