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Monrovia

$933+ Cheap flights from Philadelphia (PHL) 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ROB
Aug 12 — Aug 191
Tue 8/12
Tue 8/19
1 adult, Economy
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Cheap flight deals from Philadelphia to Monrovia

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Monrovia (ROB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 7, 2025.

Round-trip from

$1,543
(FlightHub)

One-way from

$1,039
(Kiwi.com)

Popular in

October

Cheapest in

November

Average price

$2,106
From Philadelphia to Monrovia Roberts Intl
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One-way flight from Philadelphia to Monrovia Roberts Intl
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Highest demand for flights based on searches. 1% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($40 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 Philadelphia to Monrovia

Cheapest flights from Philadelphia to Monrovia
Explore the most affordable flight options available from Philadelphia to Monrovia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 7, 2025.

This FlightHub deal was found by Cheapflights users on 8/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/163:25 pmPHL - ROB
3 stops24h 25mMultiple Airlines
Wed 10/159:10 pmROB - PHL
2 stops21h 28mMultiple Airlines
Deal found 8/6$1,543
This Ovago deal was found by Cheapflights users on 8/6. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/43:00 pmPHL - ROB
2 stops24h 50mBrussels Airlines
Wed 10/89:10 pmROB - PHL
2 stops25h 47mBrussels Airlines
Deal found 8/6$1,548
This oojo deal was found by Cheapflights users on 8/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/178:25 pmPHL - ROB
3 stops41h 25mMultiple Airlines
Tue 9/307:30 amROB - PHL
2 stops29h 35mMultiple Airlines
Deal found 8/6$1,570
This oojo deal was found by Cheapflights users on 8/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/178:25 pmPHL - ROB
3 stops41h 25mMultiple Airlines
Wed 10/157:30 amROB - PHL
3 stops53h 30mMultiple Airlines
Deal found 8/6$1,573
This Gurufare deal was found by Cheapflights users on 8/6. 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.
Thu 9/45:35 pmPHL - ROB
3 stops22h 15mBrussels Airlines
Tue 10/79:10 pmROB - PHL
2 stops25h 47mBrussels Airlines
Deal found 8/6$1,576
This Ovago deal was found by Cheapflights users on 8/5. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/195:35 pmPHL - ROB
3 stops46h 15mBrussels Airlines
Fri 9/269:10 pmROB - PHL
2 stops25h 47mBrussels Airlines
Deal found 8/5$1,585
This FlightHub deal was found by Cheapflights users on 8/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:35 pmPHL - ROB
3 stops22h 15mMultiple Airlines
Wed 10/89:10 pmROB - PHL
2 stops21h 28mMultiple Airlines
Deal found 8/6$1,588
This KAYAK deal was found by Cheapflights users on 8/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/153:00 pmPHL - ROB
3 stops24h 50mBrussels Airlines
Tue 10/149:10 pmROB - PHL
2 stops22h 50mBrussels Airlines
Deal found 8/6$1,589
This Gurufare deal was found by Cheapflights users on 8/6. 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.
Tue 9/163:00 pmPHL - ROB
2 stops24h 50mBrussels Airlines
Sun 9/289:10 pmROB - PHL
2 stops22h 50mBrussels Airlines
Deal found 8/6$1,592
This FlightHub deal was found by Cheapflights users on 8/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/189:20 amPHL - ROB
3 stops30h 30mMultiple Airlines
Tue 9/309:10 pmROB - PHL
2 stops28h 28mMultiple Airlines
Deal found 8/6$1,594
This KAYAK deal was found by Cheapflights users on 8/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:35 pmPHL - ROB
3 stops22h 15mBrussels Airlines
Fri 10/109:10 pmROB - PHL
2 stops25h 47mBrussels Airlines
Deal found 8/6$1,608

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia 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 7, 2025.
Use the filters below to find and compare flights from Philadelphia to Monrovia that are best for you.

Fly from

Philadelphia

Fly to

Monrovia

Route

Depart

Return

Price

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Tue 9/16

3:25 pm-7:50 pm

3 stops24h 25m

Monrovia Roberts Intl

Wed 10/1

9:10 pm-2:38 pm

2 stops21h 28m

$1,543

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Thu 9/4

3:00 pm-7:50 pm

2 stops24h 50m

Monrovia Roberts Intl

Wed 10/8

9:10 pm-6:57 pm

2 stops25h 47m

$1,548

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Mon 2/2

2:37 pm-9:10 pm

3 stops25h 33m

Monrovia Roberts Intl

Wed 3/4

10:35 pm-4:05 pm

2 stops22h 30m

$1,558

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Wed 9/17

8:25 pm-5:50 pm

3 stops41h 25m

Monrovia Roberts Intl

Wed 10/15

7:30 am-9:00 am

3 stops53h 30m

$1,573

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Thu 9/4

5:35 pm-7:50 pm

3 stops22h 15m

Monrovia Roberts Intl

Tue 10/7

9:10 pm-6:57 pm

2 stops25h 47m

$1,576

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Fri 9/19

5:35 pm-7:50 pm

3 stops46h 15m

Monrovia Roberts Intl

Fri 9/26

9:10 pm-6:57 pm

2 stops25h 47m

$1,585

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Thu 9/4

5:35 pm-7:50 pm

3 stops22h 15m

Monrovia Roberts Intl

Wed 10/8

9:10 pm-2:38 pm

2 stops21h 28m

$1,588

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Mon 9/15

3:00 pm-7:50 pm

3 stops24h 50m

Monrovia Roberts Intl

Tue 10/14

9:10 pm-4:00 pm

2 stops22h 50m

$1,589

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Tue 9/16

3:00 pm-7:50 pm

2 stops24h 50m

Monrovia Roberts Intl

Sun 9/28

9:10 pm-4:00 pm

2 stops22h 50m

$1,592

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Thu 9/18

9:20 am-7:50 pm

3 stops30h 30m

Monrovia Roberts Intl

Tue 9/30

9:10 pm-9:38 pm

2 stops28h 28m

$1,594

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/5

Showing 1-10 of 16 results
1
2

Best time to book a flight from Philadelphia to Monrovia

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

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

Currently, September is the cheapest month in which you can book a flight from Philadelphia to Monrovia (average of $1,197). Flying from Philadelphia to Monrovia in May is currently the most expensive (average of $1,858). 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 PHL to ROB?

Find hourly flight availability from Philadelphia 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 7, 2025.

A simple way to save on the total cost of your ticket is to fly from Philadelphia to Monrovia at noon. If you’re flexible enough to do this you can expect to save up to 17% on your trip compared to booking a flight in the evening.

Reviews of airlines servicing Monrovia

Get insights into the airlines that provide service to Monrovia. 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 Monrovia. Reviews last updated August 7, 2025.
Read reviews from past customers who have flown United Airlines and Brussels Airlines from Philadelphia to Monrovia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Brussels Airlines
7.3
Good
350 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Monrovia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Philadelphia to Monrovia round-trip?

    Our cheapest airline available from Philadelphia to Monrovia is Brussels Airlines. Our recent data shows that you can find tickets from as low as $1,548 on this airline. You may be able to fly from Philadelphia to Monrovia for 11% less than the average price by searching for this airline.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Philadelphia to Monrovia (average of $1,197). Flying from Philadelphia to Monrovia in May is currently the most expensive (average of $1,858). 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 Philadelphia to Monrovia

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Monrovia flights
Newark to Monrovia flights
Dulles Intl to Monrovia flights
Reagan-National to Monrovia flights
LaGuardia to Monrovia flights

Top 2 airlines flying from Philadelphia to Monrovia

Discover the top 2 airlines that operate flights from Philadelphia 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 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
Brussels AirlinesCheapest$1,470Average$1,584FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$1,589Average$1,753FlexibilityNo cancel feeOn-time69%

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