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Monrovia

$1,636+ Cheap flights from Philadelphia (PHL) to Monrovia (ROB)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ROB
Jul 15 — Jul 221
Wed 7/15
Wed 7/22
1 adult, Economy
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Cheap 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 June 15, 2026.

This BusinessClass deal was found by Cheapflights users on 6/14. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:30 pm
PHL
-
ROB
3 stops42h 00m
Multiple Airlines
Sun 10/47:30 am
ROB
-
PHL
3 stops35h 35m
Multiple Airlines
Deal found 6/14$1,636
This Orbitz deal was found by Cheapflights users on 6/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:30 pm
PHL
-
ROB
3 stops42h 00m
Multiple Airlines
Mon 10/56:50 pm
ROB
-
PHL
2 stops48h 15m
Multiple Airlines
Deal found 6/14$1,725
This BusinessClass deal was found by Cheapflights users on 6/13. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:20 pm
PHL
-
ROB
3 stops24h 55m
Brussels Airlines
Fri 11/2710:45 pm
ROB
-
PHL
2 stops23h 37m
Brussels Airlines
Deal found 6/13$1,821
This Ovago deal was found by Cheapflights users on 6/14. 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.
Mon 12/286:00 am
PHL
-
ROB
3 stops34h 15m
Brussels Airlines
Thu 2/258:20 pm
ROB
-
PHL
3 stops27h 20m
Brussels Airlines
Deal found 6/14$1,862
This Justfly.com deal was found by Cheapflights users on 6/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:25 pm
PHL
-
ROB
3 stops24h 25m
Multiple Airlines
Sun 10/49:10 pm
ROB
-
PHL
2 stops28h 22m
Multiple Airlines
Deal found 6/14$1,871
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Thu 9/1711:04 am
PHL
-
ROB
3 stops28h 46m
United Airlines
Sun 10/49:10 pm
ROB
-
PHL
2 stops28h 19m
United Airlines
Deal found 6/14$1,879
This Ovago deal was found by Cheapflights users on 6/14. 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.
Sun 9/205:40 pm
PHL
-
ROB
3 stops46h 10m
Brussels Airlines
Sun 10/49:10 pm
ROB
-
PHL
2 stops25h 32m
Brussels Airlines
Deal found 6/14$1,880
This KAYAK deal was found by Cheapflights users on 6/13. 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.
Fri 9/185:40 pm
PHL
-
ROB
3 stops46h 10m
Multiple Airlines
Sun 10/189:10 pm
ROB
-
PHL
2 stops24h 44m
Multiple Airlines
Deal found 6/13$1,883
This United Airlines deal was found by Cheapflights users on 6/14. 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 9/167:40 pm
PHL
-
ROB
3 stops44h 10m
United Airlines
Tue 10/69:10 pm
ROB
-
PHL
2 stops28h 19m
United Airlines
Deal found 6/14$1,885
This Ovago deal was found by Cheapflights users on 6/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/265:40 pm
PHL
-
ROB
3 stops22h 35m
Brussels Airlines
Tue 2/2310:45 pm
ROB
-
PHL
2 stops24h 55m
Brussels Airlines
Deal found 6/13$1,903
This United Airlines deal was found by Cheapflights users on 6/11. 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 9/237:40 pm
PHL
-
ROB
3 stops44h 10m
United Airlines
Sun 9/279:10 pm
ROB
-
PHL
2 stops28h 19m
United Airlines
Deal found 6/11$1,935

Find 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 June 15, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,636
(BusinessClass)

Popular in

December

Cheapest in

February

Average price

$1,901
Provider with most accurate pricing for Philadelphia-Monrovia Roberts Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Monrovia Roberts Intl flights.
Search Deals
From Philadelphia to Monrovia Roberts Intl
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

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 June 15, 2026.
Use the filters below to find and compare flights from Philadelphia to Monrovia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Thu 11/12

3:20 pm-9:15 pm

3 stops24h 55m

Monrovia Roberts Intl

Fri 11/27

10:45 pm-5:22 pm

2 stops23h 37m

$1,821

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Sat 9/19

10:30 am-7:50 pm

3 stops29h 20m

Monrovia Roberts Intl

Fri 10/2

9:10 pm-5:54 pm

2 stops24h 44m

$1,879

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Mon 9/21

1:35 pm-7:50 pm

3 stops26h 15m

Monrovia Roberts Intl

Wed 10/7

9:10 pm-11:30 pm

2 stops30h 20m

$1,879

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Sun 9/20

7:40 pm-7:50 pm

3 stops44h 10m

Monrovia Roberts Intl

Sun 10/4

9:10 pm-11:30 pm

2 stops30h 20m

$1,885

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Wed 9/16

7:40 pm-7:50 pm

3 stops44h 10m

Monrovia Roberts Intl

Tue 10/6

9:10 pm-9:29 pm

2 stops28h 19m

$1,885

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Wed 9/23

7:40 pm-7:50 pm

3 stops44h 10m

Monrovia Roberts Intl

Sun 9/27

9:10 pm-9:29 pm

2 stops28h 19m

$1,935

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Fri 9/18

5:40 pm-7:50 pm

3 stops46h 10m

Monrovia Roberts Intl

Sun 10/18

9:10 pm-6:42 pm

3 stops25h 32m

$1,979

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Fri 9/18

5:40 pm-7:50 pm

3 stops46h 10m

Monrovia Roberts Intl

Sun 10/4

9:10 pm-6:42 pm

3 stops49h 32m

$1,979

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Sun 8/2

7:45 pm-7:50 pm

3 stops44h 05m

Monrovia Roberts Intl

Sun 8/23

9:10 pm-12:59 am

2 stops31h 49m

$1,985

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Thu 6/25

10:05 am-7:50 pm

3 stops29h 45m

Monrovia Roberts Intl

Fri 7/10

9:10 pm-11:20 pm

2 stops30h 10m

$2,068

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/13

Sorted by cheapest first

Compare providers for flights from Philadelphia to Monrovia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Monrovia in June.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
BusinessClassPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Monrovia flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Philadelphia-Monrovia flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Philadelphia-Monrovia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Monrovia flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Monrovia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

How much does it cost to fly round-trip from Philadelphia to Monrovia?

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 June 15, 2026.
Read reviews from past customers who have flown 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.
Brussels Airlines
7.2
Good
412 reviews

Comfort

7.0

Food

6.3

Boarding

7.3

Overall

7.2

Crew

7.9

Entertainment

6.2

Reviews

1 / 20
8.0
Excellent

Nyaga,Mar 2026

BRU - NBO

Airbus A330 was quite empty, so had all the seats to myself. Very comfortable. Flight left on time. Not a fan of pizza as it is processed carbs heavy but the rest of the food was good. Movies were good. I enjoyed Better Man - a movie on Robbie William's life.
Brussels Airlines
7.2
Good
412 reviews
Brussels Airlines
7.2
Good
412 reviews

Comfort

7.0

Food

6.3

Boarding

7.3

Overall

7.2

Crew

7.9

Entertainment

6.2

Reviews

1 / 20
8.0
Excellent

Nyaga,Mar 2026

BRU - NBO

Airbus A330 was quite empty, so had all the seats to myself. Very comfortable. Flight left on time. Not a fan of pizza as it is processed carbs heavy but the rest of the food was good. Movies were good. I enjoyed Better Man - a movie on Robbie William's life.

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 $1,821, Brussels Airlines can have you in Monrovia from Philadelphia in 24h 55m. 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 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 $1,395 on this airline. You may be able to fly from Philadelphia to Monrovia for 17% 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.

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

Top airline flying from Philadelphia to Monrovia

Discover the top airline 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 June 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
Brussels AirlinesCheapest$1,395Average$1,738FlexibilityNo cancel feeOn-timeN/A

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