The cheapest times to fly from ROB to ORD are

  • February 5th to June 3rd (except the week of April 9th)
  • October 8th to December 2nd (except the weeks of October 15th and November 19th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ROB to ORD is early to mid October. Prices can be as high as $12300 for Saturday flights during early August, or as low as $1618 for Sunday flights around early to mid October.


When to Fly to Chicago

Flying from Monrovia (ROB) to Chicago, IL (ORD) will usually cost between $1821 to $12100 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid October with an average ticket price of $1824. Due to high demand the most expensive time to fly is early August, with an average price of $11800. Planning your trip to low-cost times can easily save you $9976 on economy flights and even more on first-class flights. Generally, any price below $2124 can be considered a good price for a round-trip ROB to ORD flight.

See below for a graph of average weekly prices for the ROB to ORD route. All prices are for round-trip tickets in USD.

ROB to ORD Flight Prices

Compared to other flights, the ROB to ORD flight is more expensive than the average and costs less than the average flight leaving from Monrovia. The average price per mile (for a direct flight) is $0.25, which is below average.


Flight Prices by Day of the Week

Sunday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly to Chicago, and Thursdays are the most expensive days to return to Monrovia. Selecting flights on the least expensive days could save you up to $4482 (48%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Sunday and returning a week later will cost an average of $1933. Return trip prices are from the ORD to ROB flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ROB to ORD can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 10 hour 30 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from ROB to ORD while comparing.

Destination alternative #1: Gerald R. Ford International Airport (GRR) in Grand Rapids, MI

  • 137 miles (220 km) away from ORD
  • Usually 10.92% less expensive than ORD
  • 2-layover flights available

See ROB to GRR flights


Flight Hacking ROB to ORD

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from ROB to ORD — but Champion Traveler does!

Hack #1: New York, NY (ROB > JFK > ORD)

  • Price for both tickets: $1725
  • Average savings: $400 (18.81%)

See ROB to LGA flights

Hack #2: New York, NY (ROB > LGA > ORD)

  • Price for both tickets: $1796
  • Average savings: $328 (15.44%)

See ROB to JFK flights

Hack #3: Boston, MA (ROB > BOS > ORD)

  • Price for both tickets: $1867
  • Average savings: $258 (12.12%)

See ROB to BOS flights


Flight Questions Answered

Still have questions about flying from ROB to ORD? We’ve got answers.

Which airlines fly this route?

You can find 16 major airlines flying this route most often: Air Canada, Air France, American, British Airways, Brussels Airlines, Ethiopian, Finnair, Iberia, Kenya Airways, KLM, Lufthansa, Royal Air Maroc, South African, SWISS, Turkish Airlines, United, and potentially more during busy seasons.

How far away is it from Chicago O’Hare International Airport to Monrovia Roberts International Airport?

The distance between the two airports is roughly 5291 miles or 8515 kilometers.

How long does it take to fly from ROB to ORD?

The real-world flight time for a nonstop ROB to ORD flight is about 10 hour 30 minutes.

How many flights go between Monrovia and Chicago, IL?

It depends on the day of the week and the date, but a typical day might have around 8 available flights from ROB to ORD.


Airport Location Info


Departing Airport

Origination code ROB
Origination airport name Monrovia Roberts International Airport
City Monrovia
Country Liberia
Latitude 6.2
Longitude -10.4

Return Airport

Destination code ORD
Destination airport name Chicago O’Hare International Airport
City Chicago, IL
Country the United States
Latitude 42
Longitude -87.9


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.