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$1,029+ Cheap flights from Monrovia (ROB) to Philadelphia (PHL)

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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
ROB — PHL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Find flight deals from Monrovia to Philadelphia

Cheapest flights from Monrovia to Philadelphia
Explore the most affordable flight options available from Monrovia to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/9. 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 9/169:10 pmROB - PHL
2 stops45h 07mUnited Airlines
Mon 2/1610:15 amPHL - ROB
3 stops30h 00mUnited Airlines
Deal found 9/9$1,665
This Gurufare deal was found by Cheapflights users on 9/9. 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.
Tue 9/169:10 pmROB - PHL
2 stops25h 45mBrussels Airlines
Mon 2/162:37 pmPHL - ROB
2 stops25h 38mBrussels Airlines
Deal found 9/9$1,767

Cheapflights Fare Finder

 
Customize your flight search to find flights from Monrovia to Philadelphia 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 September 11, 2025.
Use the filters below to find and compare flights from Monrovia to Philadelphia that are best for you.

Fly from

Monrovia

Fly to

Philadelphia

Route

Depart

Return

Price

MonroviaPhiladelphia

ROB - PHL

ROBPHL

Monrovia Roberts Intl

Fri 10/10

6:35 am-9:00 am

2 stops30h 25m

$1,029

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from Monrovia to Philadelphia

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

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

Currently, August is the cheapest month in which you can book a flight from Monrovia to Philadelphia (average of $236). Flying from Monrovia to Philadelphia in March is currently the most expensive (average of $295). 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 Monrovia to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Monrovia to Philadelphia (average of $236). Flying from Monrovia to Philadelphia in March is currently the most expensive (average of $295). 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

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Vineland
Wildwood
King of Prussia
Pottstown
Reading
Dewey Beach
Ephrata
Camden
Ocean City
Cherry Hill
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace
Plymouth Meeting

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Alternative routes for Monrovia to Philadelphia

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