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Monrovia

$835+ 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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ROB
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$1,401
(Ovago)

One-way from

$835
(Gurufare)

Popular in

October

Cheapest in

January

Average price

$1,667
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. 5% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This Ovago deal was found by Cheapflights users on 9/14. 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.
Tue 10/73:00 pmPHL - ROB
2 stops24h 50mBrussels Airlines
Tue 10/149:10 pmROB - PHL
2 stops25h 47mBrussels Airlines
Deal found 9/14$1,401
This FlightHub deal was found by Cheapflights users on 9/15. 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.
Mon 10/203:25 pmPHL - ROB
3 stops24h 25mMultiple Airlines
Sun 11/210:45 pmROB - PHL
2 stops21h 02mMultiple Airlines
Deal found 9/15$1,409
This KAYAK deal was found by Cheapflights users on 9/13. 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 10/63:00 pmPHL - ROB
3 stops24h 50mBrussels Airlines
Wed 10/159:10 pmROB - PHL
2 stops25h 47mBrussels Airlines
Deal found 9/13$1,426
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/66:30 amPHL - ROB
3 stops33h 20mUnited Airlines
Wed 10/159:10 pmROB - PHL
2 stops31h 35mUnited Airlines
Deal found 9/14$1,434
This Ovago deal was found by Cheapflights users on 9/14. 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.
Tue 10/73:00 pmPHL - ROB
2 stops24h 50mBrussels Airlines
Wed 10/159:10 pmROB - PHL
2 stops22h 50mBrussels Airlines
Deal found 9/14$1,448
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 10/87:58 pmPHL - ROB
3 stops43h 52mUnited Airlines
Wed 10/159:10 pmROB - PHL
2 stops25h 47mUnited Airlines
Deal found 9/14$1,465
This Brussels Airlines deal was found by Cheapflights users on 9/14. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:35 pmPHL - ROB
3 stops46h 15mBrussels Airlines
Tue 10/149:10 pmROB - PHL
2 stops25h 47mBrussels Airlines
Deal found 9/14$1,489
This Brussels Airlines deal was found by Cheapflights users on 9/14. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:35 pmPHL - ROB
3 stops46h 15mBrussels Airlines
Wed 10/159:10 pmROB - PHL
3 stops49h 47mBrussels Airlines
Deal found 9/14$1,510
This Ovago deal was found by Cheapflights users on 9/14. 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.
Wed 12/38:00 pmPHL - ROB
2 stops27h 35mBritish Airways
Wed 3/255:35 amROB - PHL
3 stops33h 33mBritish Airways
Deal found 9/14$1,511
This Brussels Airlines deal was found by Cheapflights users on 9/14. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/65:35 pmPHL - ROB
3 stops22h 15mBrussels Airlines
Tue 10/149:10 pmROB - PHL
3 stops49h 47mBrussels Airlines
Deal found 9/14$1,517
This Ovago deal was found by Cheapflights users on 9/14. 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.
Tue 12/309:33 pmPHL - ROB
3 stops50h 02mBritish Airways
Wed 2/185:35 amROB - PHL
3 stops33h 08mBritish Airways
Deal found 9/14$1,522

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 September 15, 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

Mon 10/6

3:00 pm-7:50 pm

3 stops24h 50m

Monrovia Roberts Intl

Tue 10/14

9:10 pm-6:57 pm

2 stops25h 47m

$1,401

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Mon 10/6

3:00 pm-7:50 pm

3 stops24h 50m

Monrovia Roberts Intl

Wed 10/15

9:10 pm-6:57 pm

2 stops25h 47m

$1,426

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Mon 10/6

6:30 am-7:50 pm

3 stops33h 20m

Monrovia Roberts Intl

Wed 10/15

9:10 pm-12:45 am

2 stops31h 35m

$1,434

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Mon 10/6

6:30 am-7:50 pm

3 stops33h 20m

Monrovia Roberts Intl

Tue 10/14

9:10 pm-9:28 pm

2 stops28h 18m

$1,434

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Tue 1/6

1:10 pm-9:15 pm

3 stops27h 05m

Monrovia Roberts Intl

Wed 2/18

10:45 pm-9:48 am

2 stops40h 03m

$1,440

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Tue 1/6

10:10 am-9:15 pm

3 stops30h 05m

Monrovia Roberts Intl

Fri 2/6

8:05 pm-6:54 pm

3 stops27h 49m

$1,459

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Sun 1/11

7:55 pm-9:15 pm

3 stops44h 20m

Monrovia Roberts Intl

Fri 2/6

8:05 pm-6:54 pm

3 stops27h 49m

$1,465

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Wed 10/8

7:58 pm-7:50 pm

3 stops43h 52m

Monrovia Roberts Intl

Wed 10/15

9:10 pm-6:57 pm

2 stops25h 47m

$1,465

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Sat 1/10

10:30 am-9:15 pm

3 stops29h 45m

Monrovia Roberts Intl

Fri 2/6

8:05 pm-6:54 pm

3 stops27h 49m

$1,484

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Fri 1/9

10:10 am-9:15 pm

3 stops30h 05m

Monrovia Roberts Intl

Fri 2/6

8:05 pm-6:54 pm

3 stops27h 49m

$1,484

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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 $1,845). 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 September 15, 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 September 15, 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
8,929 reviews

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

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
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

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
359 reviews
United Airlines
7.4
Good
8,929 reviews

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

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.

  • How long is the flight from Philadelphia to Monrovia?

    For as low as $1,426, Brussels Airlines can have you in Monrovia from Philadelphia in 24h 50m. The distance between Philadelphia and Monrovia is about 4614 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying 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 $1,454 on this airline. An additional option worth looking into is United Airlines, starting at $1,589. You may be able to fly from Philadelphia to Monrovia for 14% less than the average price by searching for these airlines.

  • 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 $1,845). 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.
Dulles Intl to Monrovia flights
John F Kennedy Intl to Monrovia flights
Newark 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Brussels AirlinesCheapest$1,454Average$1,629FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$1,589Average$1,753FlexibilityNo cancel feeOn-time69%

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