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$741+ Cheap flights from Illinois to Monrovia (ROB)

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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ROB
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap flight deals from Illinois to Monrovia

Keep the following information in mind while searching for Illinois to Monrovia flight deals. Data was last updated January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,056
(Gurufare)

One-way from

$741
(FlightHub)

Popular in

May

Cheapest in

October

Average price

$1,367
Provider with most accurate pricing for Chicago (CHI)-Monrovia Roberts Intl flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Monrovia Roberts Intl flights.
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From Illinois to Monrovia Roberts Intl
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One-way flight from Illinois to Monrovia Roberts Intl
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Highest demand for flights based on searches. 15% potential increase in price ($272 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($71 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Illinois to Monrovia

Cheapest flights from Illinois to Monrovia
Explore the most affordable flight options available from Illinois to Monrovia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This Gurufare deal was found by Cheapflights users on 1/6. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:50 pmORD - ROB
2 stops41h 55mSWISS
Wed 3/1810:45 pmROB - ORD
1 stop19h 25mSWISS
Deal found 1/6$1,056
This KAYAK deal was found by Cheapflights users on 1/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/16:50 pmORD - ROB
3 stops44h 25mSWISS
Sun 3/2210:45 pmROB - ORD
2 stops47h 35mSWISS
Deal found 1/5$1,072
This United Airlines deal was found by Cheapflights users on 1/5. 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.
Mon 2/25:55 pmORD - ROB
2 stops21h 20mUnited Airlines
Sun 3/2210:45 pmROB - ORD
2 stops25h 15mUnited Airlines
Deal found 1/5$1,091
This United Airlines deal was found by Cheapflights users on 1/5. 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.
Tue 2/310:52 amORD - ROB
3 stops28h 23mUnited Airlines
Sun 3/2210:45 pmROB - ORD
2 stops25h 15mUnited Airlines
Deal found 1/5$1,096
This United Airlines deal was found by Cheapflights users on 1/8. 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.
Sun 2/226:20 pmORD - ROB
3 stops44h 55mUnited Airlines
Sun 3/110:45 pmROB - ORD
2 stops25h 56mUnited Airlines
Deal found 1/8$1,101
This KAYAK deal was found by Cheapflights users on 1/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/294:10 pmORD - ROB
3 stops47h 05mSWISS
Sun 3/2210:45 pmROB - ORD
2 stops47h 35mSWISS
Deal found 1/5$1,122
This United Airlines deal was found by Cheapflights users on 1/5. 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.
Thu 1/295:55 pmORD - ROB
2 stops21h 20mUnited Airlines
Sun 3/2210:45 pmROB - ORD
2 stops26h 29mUnited Airlines
Deal found 1/5$1,141
This United Airlines deal was found by Cheapflights users on 1/7. 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.
Mon 3/25:55 pmORD - ROB
2 stops21h 20mUnited Airlines
Wed 4/19:10 pmROB - ORD
2 stops31h 33mUnited Airlines
Deal found 1/7$1,142
This United Airlines deal was found by Cheapflights users on 1/5. 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.
Sat 1/317:00 amORD - ROB
3 stops32h 15mUnited Airlines
Sun 3/2210:45 pmROB - ORD
2 stops26h 29mUnited Airlines
Deal found 1/5$1,146

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Monrovia 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 January 8, 2026.
Use the filters below to find and compare flights from Illinois to Monrovia that are best for you.

Fly from

Illinois

Fly to

Monrovia

Route

Depart

Return

Price

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Mon 2/2

5:55 pm-9:15 pm

2 stops21h 20m

Monrovia Roberts Intl

Sun 3/22

10:45 pm-7:00 pm

2 stops25h 15m

$1,091

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Tue 2/3

5:55 pm-9:15 pm

2 stops21h 20m

Monrovia Roberts Intl

Sun 3/22

10:45 pm-8:14 pm

2 stops26h 29m

$1,091

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Sun 2/22

6:20 pm-9:15 pm

3 stops44h 55m

Monrovia Roberts Intl

Sun 3/1

10:45 pm-6:41 pm

2 stops25h 56m

$1,101

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Thu 1/29

5:55 pm-9:15 pm

2 stops21h 20m

Monrovia Roberts Intl

Sun 3/22

10:45 pm-8:14 pm

2 stops26h 29m

$1,141

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Sat 1/31

5:55 pm-9:15 pm

2 stops21h 20m

Monrovia Roberts Intl

Sun 3/22

10:45 pm-8:14 pm

2 stops26h 29m

$1,141

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Fri 1/30

5:55 pm-9:15 pm

2 stops21h 20m

Monrovia Roberts Intl

Sun 3/22

10:45 pm-8:14 pm

2 stops26h 29m

$1,141

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Mon 3/16

8:00 am-9:15 pm

3 stops32h 15m

Monrovia Roberts Intl

Tue 3/31

9:10 pm-11:00 pm

2 stops30h 50m

$1,154

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Mon 3/2

5:55 pm-9:15 pm

2 stops21h 20m

Monrovia Roberts Intl

Tue 3/31

9:10 pm-9:38 am

2 stops41h 28m

$1,155

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Mon 3/2

12:45 pm-9:15 pm

3 stops26h 30m

Monrovia Roberts Intl

Sun 3/29

9:10 pm-11:27 am

2 stops43h 17m

$1,160

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Thu 1/15

9:40 am-4:35 am

2 stops36h 55m

$741

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 11 results
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Best time to book a flight from Illinois to Monrovia

Have a flexible travel schedule? Discover the best time to fly to Monrovia from Illinois 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 Illinois to Monrovia

What is the cheapest month to book a flight from Illinois to Monrovia?

Currently, October is the cheapest month in which you can book a flight from Illinois to Monrovia (average of $967). Flying from Illinois to Monrovia in June is currently the most expensive (average of $1,847). 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 Illinois to Monrovia. 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 Monrovia from Illinois?

    Monrovia Roberts Intl (ROB) is the airport you will fly into if you book a flight from Illinois to Monrovia. It is only a 30.2 mi journey from Roberts Intl (ROB) to Monrovia’s city center.

  • How long is the flight from Illinois to Monrovia?

    United Airlines can get you from Illinois to Monrovia in just under 21h 20m. Your travel time can differ by up to . Illinois and Monrovia are separated by a distance of 5288 mi.

  • Can I find deals for flights from Illinois to Monrovia that include hotel bookings?

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

  • How can I find direct flights from Illinois to Monrovia?

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

  • Can I find deals for business class flights from Illinois to Monrovia?

    Yes. Cheapflights offers flight deals from Illinois to Monrovia 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 Illinois to Monrovia?

    Currently, October is the cheapest month in which you can book a flight from Illinois to Monrovia (average of $967). Flying from Illinois to Monrovia in June is currently the most expensive (average of $1,847). 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 Illinois to Monrovia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Illinois to Monrovia

Discover the top 3 airlines that operate flights from Illinois to Monrovia. 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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Brussels AirlinesCheapest$996Average$1,298FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$1,029Average$1,338FlexibilityNo cancel feeOn-time69%
Ethiopian AirCheapest$1,155Average$1,406FlexibilityNo cancel feeOn-time72%

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