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Eureka

$284+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ACV
Νοε 28 — Δεκ 51
Παρ 11/28
Παρ 12/5
1 adult, Economy
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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 Οκτώβριος 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. 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.
Τρι 11/118:48 amORD - ACV
1 stop8h 30mUnited Airlines
Σαβ 11/152:15 pmACV - ORD
1 stop6h 55mUnited Airlines
Deal found 10/27$334
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Πεμ 11/138:47 amORD - ACV
1 stop6h 43mUnited Airlines
Δευ 11/172:15 pmACV - ORD
1 stop8h 44mUnited Airlines
Deal found 10/29$354
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Τρι 12/27:10 amORD - ACV
1 stop10h 06mUnited Airlines
Σαβ 12/612:30 pmACV - ORD
1 stop6h 38mUnited Airlines
Deal found 10/29$356
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Σαβ 11/88:47 amORD - ACV
1 stop6h 43mUnited Airlines
Σαβ 11/156:45 pmACV - ORD
1 stop8h 15mUnited Airlines
Deal found 10/27$379
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Κυρ 11/168:48 amORD - ACV
1 stop8h 30mUnited Airlines
Πεμ 11/208:20 amACV - ORD
2 stops19h 09mUnited Airlines
Deal found 10/29$865

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 Οκτώβριος 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$284
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$593
Provider with most accurate pricing for Chicago (CHI)-Arcata Eureka flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Arcata Eureka flights.
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From Chicago O'Hare Intl to Eureka
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Highest demand for flights based on searches. 8% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 Οκτώβριος 29, 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

Παρ 1/30

2:40 pm-10:28 pm

1 stop9h 48m

Arcata Eureka

Δευ 2/2

4:00 pm-12:58 am

1 stop6h 58m

$284

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Τρι 11/11

8:48 am-3:18 pm

1 stop8h 30m

Arcata Eureka

Σαβ 11/15

2:15 pm-11:10 pm

1 stop6h 55m

$334

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Πεμ 11/13

8:47 am-1:30 pm

1 stop6h 43m

Arcata Eureka

Δευ 11/17

2:15 pm-12:59 am

1 stop8h 44m

$354

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Τρι 12/2

7:10 am-3:16 pm

1 stop10h 06m

Arcata Eureka

Σαβ 12/6

12:30 pm-9:08 pm

1 stop6h 38m

$356

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Σαβ 11/8

8:47 am-1:30 pm

1 stop6h 43m

Arcata Eureka

Σαβ 11/15

6:45 pm-5:00 am

1 stop8h 15m

$379

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Σαβ 3/7

6:20 am-2:46 pm

1 stop10h 26m

Arcata Eureka

Τετ 3/11

2:13 pm-12:59 am

1 stop8h 46m

$444

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Σαβ 3/7

6:20 am-2:46 pm

1 stop10h 26m

Arcata Eureka

Τρι 3/10

3:50 pm-12:59 am

1 stop7h 09m

$444

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Δευ 4/27

7:15 am-3:17 pm

1 stop10h 02m

Arcata Eureka

Σαβ 5/2

6:40 pm-5:25 am

1 stop8h 45m

$444

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Δευ 4/27

7:15 am-3:17 pm

1 stop10h 02m

Arcata Eureka

Δευ 5/4

4:00 pm-1:11 am

1 stop7h 11m

$444

ChicagoArcata

ORD - ACV

ORDACV

Chicago O'Hare Intl

Τρι 12/16

6:55 am-2:44 pm

1 stop9h 49m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

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, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Eureka (average of $283). Flying from Chicago O'Hare Intl Airport to Eureka in December is currently the most expensive (average of $962). 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 Οκτώβριος 29, 2025.

One of the essential ways to save on airfare from Chicago O'Hare Intl Airport to Eureka is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 13% on airfare.

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 Οκτώβριος 29, 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
8,999 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

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
8,999 reviews
United Airlines
7.4
Good
8,999 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

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 9h 48m. 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, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Eureka (average of $283). Flying from Chicago O'Hare Intl Airport to Eureka in December is currently the most expensive (average of $962). 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 Οκτώβριος 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$284Average$519FlexibilityNo cancel feeOn-time69%

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