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Monrovia

$542+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ROB
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
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 August 18, 2025.

Round-trip from

$997
(CheapOair)

One-way from

$542
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$1,849
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. 4% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($69 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 18, 2025.

This Expedia deal was found by Cheapflights users on 8/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/227:15 amORD - ROB
3 stops32h 00mMultiple Airlines
Sat 12/610:45 pmROB - ORD
1 stop19h 25mMultiple Airlines
Deal found 8/18$997
This Priceline deal was found by Cheapflights users on 8/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2212:50 pmORD - ROB
3 stops26h 25mMultiple Airlines
Sun 12/710:45 pmROB - ORD
2 stops23h 35mMultiple Airlines
Deal found 8/16$1,016
This Gurufare deal was found by Cheapflights users on 8/18. 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.
Sat 11/225:55 pmORD - ROB
2 stops21h 20mBrussels Airlines
Sat 12/610:45 pmROB - ORD
1 stop19h 25mBrussels Airlines
Deal found 8/18$1,112
This Gurufare deal was found by Cheapflights users on 8/17. 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 11/266:50 pmORD - ROB
2 stops41h 55mMultiple Airlines
Sun 12/710:45 pmROB - ORD
1 stop19h 25mMultiple Airlines
Deal found 8/17$1,131
This United Airlines deal was found by Cheapflights users on 8/16. 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 9/305:55 pmORD - ROB
2 stops20h 55mUnited Airlines
Tue 10/79:10 pmROB - ORD
1 stop19h 55mUnited Airlines
Deal found 8/16$1,145
This Gurufare deal was found by Cheapflights users on 8/17. 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 11/266:50 pmORD - ROB
2 stops41h 55mSWISS
Sun 12/710:45 pmROB - ORD
2 stops23h 35mSWISS
Deal found 8/17$1,151
This United Airlines deal was found by Cheapflights users on 8/17. 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 10/135:55 pmORD - ROB
2 stops20h 55mUnited Airlines
Wed 4/19:10 pmROB - ORD
2 stops24h 27mUnited Airlines
Deal found 8/17$1,155
This United Airlines deal was found by Cheapflights users on 8/17. 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 10/135:55 pmORD - ROB
2 stops20h 55mUnited Airlines
Wed 3/1810:45 pmROB - ORD
2 stops44h 27mUnited Airlines
Deal found 8/17$1,161

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 August 18, 2025.
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

Tue 9/30

5:55 pm-7:50 pm

2 stops20h 55m

Monrovia Roberts Intl

Tue 10/7

9:10 pm-12:05 pm

1 stop19h 55m

$1,145

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Mon 10/13

5:55 pm-7:50 pm

2 stops20h 55m

Monrovia Roberts Intl

Wed 4/1

9:10 pm-4:37 pm

2 stops24h 27m

$1,155

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Tue 10/14

12:55 pm-7:50 pm

3 stops25h 55m

Monrovia Roberts Intl

Wed 4/1

9:10 pm-4:37 pm

2 stops24h 27m

$1,159

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Mon 10/13

5:55 pm-7:50 pm

2 stops20h 55m

Monrovia Roberts Intl

Wed 3/18

10:45 pm-2:12 pm

2 stops44h 27m

$1,161

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Sun 10/12

9:20 pm-7:50 pm

3 stops41h 30m

Monrovia Roberts Intl

Wed 4/1

9:10 pm-4:37 pm

2 stops24h 27m

$1,165

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Tue 10/14

8:50 am-7:50 pm

3 stops30h 00m

Monrovia Roberts Intl

Wed 3/18

10:45 pm-2:12 pm

2 stops44h 27m

$1,165

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Sun 10/12

9:20 pm-7:50 pm

3 stops41h 30m

Monrovia Roberts Intl

Wed 3/18

10:45 pm-2:12 pm

2 stops44h 27m

$1,171

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Mon 10/13

8:40 am-7:50 pm

3 stops30h 10m

Monrovia Roberts Intl

Fri 3/20

8:05 pm-11:18 am

3 stops44h 13m

$1,195

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Sun 10/12

6:00 pm-7:50 pm

3 stops44h 50m

Monrovia Roberts Intl

Fri 3/20

8:05 pm-11:18 am

3 stops44h 13m

$1,195

ChicagoMonrovia

ORD - ROB

ORDROB

Chicago O'Hare Intl

Mon 9/15

5:55 pm-7:50 pm

2 stops20h 55m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

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 time of day to fly from IL to ROB?

Find hourly flight availability from Illinois to Monrovia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Monrovia as you normally would.

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 20h 55m. 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, September is the cheapest month in which you can book a flight from Illinois to Monrovia (average of $1,197). Flying from Illinois to Monrovia in May is currently the most expensive (average of $1,850). 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 airline flying from Illinois to Monrovia

Discover the top airline 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Ethiopian AirCheapest$1,155Average$1,381FlexibilityNo cancel feeOn-time72%

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