HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Monrovia

$1,768+ 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 6/29. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ROB
5月 14 — 5月 211
週四 5/14
週四 5/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Monrovia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 4月 14, 2026.

This KAYAK deal was found by Cheapflights users on 4/10. 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.
週一 6/298:20 pm
PHL
-
ROB
2 stops28h 15m
British Airways
週六 10/313:05 am
ROB
-
PHL
2 stops41h 45m
British Airways
Deal found 4/10$1,768
This CheapOair deal was found by Cheapflights users on 4/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週三 5/1310:30 am
PHL
-
ROB
3 stops38h 05m
British Airways
週三 5/205:45 am
ROB
-
PHL
2 stops37h 40m
British Airways
Deal found 4/13$1,785
This Gurufare deal was found by Cheapflights users on 4/10. 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.
週一 5/47:45 pm
PHL
-
ROB
2 stops39h 00m
Multiple Airlines
週一 6/17:30 am
ROB
-
PHL
3 stops30h 15m
Multiple Airlines
Deal found 4/10$1,786
This KAYAK deal was found by Cheapflights users on 4/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週五 6/267:20 pm
PHL
-
ROB
2 stops29h 15m
British Airways
週六 10/313:05 am
ROB
-
PHL
2 stops41h 45m
British Airways
Deal found 4/9$1,791
This KAYAK deal was found by Cheapflights users on 4/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週一 5/411:32 am
PHL
-
ROB
3 stops28h 18m
Multiple Airlines
週二 8/119:10 pm
ROB
-
PHL
2 stops22h 55m
Multiple Airlines
Deal found 4/9$1,809
This United Airlines deal was found by Cheapflights users on 4/9. 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.
週一 5/46:10 am
PHL
-
ROB
3 stops33h 40m
United Airlines
週二 8/119:10 pm
ROB
-
PHL
2 stops44h 55m
United Airlines
Deal found 4/9$1,810
This United Airlines deal was found by Cheapflights users on 4/9. 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.
週日 5/37:45 pm
PHL
-
ROB
3 stops44h 05m
United Airlines
週二 8/119:10 pm
ROB
-
PHL
2 stops40h 36m
United Airlines
Deal found 4/9$1,816
This KAYAK deal was found by Cheapflights users on 4/10. 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.
週四 5/77:45 pm
PHL
-
ROB
2 stops39h 00m
Multiple Airlines
週一 6/87:30 am
ROB
-
PHL
3 stops34h 40m
Multiple Airlines
Deal found 4/10$1,821
This BusinessClass deal was found by Cheapflights users on 4/9. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週日 5/310:02 pm
PHL
-
ROB
3 stops50h 33m
British Airways
週日 5/105:45 am
ROB
-
PHL
3 stops33h 07m
British Airways
Deal found 4/9$1,823

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 4月 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,768
(KAYAK)

Popular in

December

Cheapest in

February

Average price

$1,663
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. 0% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 4月 14, 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

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

週一 5/4

6:10 am-7:50 pm

3 stops33h 40m

Monrovia Roberts Intl

週二 8/11

9:10 pm-2:05 pm

2 stops44h 55m

$1,810

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

週二 5/5

10:38 am-7:50 pm

3 stops29h 12m

Monrovia Roberts Intl

週日 8/9

9:10 pm-11:44 pm

2 stops30h 34m

$1,829

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

週一 5/4

10:38 am-7:50 pm

3 stops29h 12m

Monrovia Roberts Intl

週日 8/9

9:10 pm-11:44 pm

2 stops30h 34m

$1,829

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

週三 7/1

8:27 pm-7:50 pm

3 stops43h 23m

Monrovia Roberts Intl

週二 10/27

10:45 pm-7:18 pm

2 stops24h 33m

$1,875

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

週一 6/29

10:32 am-7:50 pm

3 stops29h 18m

Monrovia Roberts Intl

週日 11/1

10:45 pm-9:32 pm

2 stops27h 47m

$1,892
Quickest round-trip

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

週三 4/29

8:15 pm-4:35 am

2 stops28h 20m

Monrovia Roberts Intl

週三 5/27

5:45 am-12:58 am

3 stops23h 13m

$1,915

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

週五 4/24

7:35 pm-4:35 am

2 stops29h 00m

Monrovia Roberts Intl

週五 7/3

5:45 am-11:12 am

3 stops33h 27m

$1,928

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

週四 5/7

11:32 am-7:50 pm

3 stops28h 18m

Monrovia Roberts Intl

週二 8/11

9:10 pm-2:05 pm

2 stops44h 55m

$1,948

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

週日 5/10

7:45 pm-7:50 pm

3 stops44h 05m

Monrovia Roberts Intl

週二 8/11

9:10 pm-9:46 am

2 stops40h 36m

$1,954

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

週五 5/8

7:45 pm-7:50 pm

3 stops44h 05m

Monrovia Roberts Intl

週日 8/9

9:10 pm-11:44 pm

2 stops30h 34m

$1,973

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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 April.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
oojoPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Monrovia flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

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 $870). Flying from Philadelphia to Monrovia in July is currently the most expensive (average of $1,268). 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.

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 4月 14, 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
400 reviews

Boarding

7.3

Comfort

7.0

Entertainment

6.2

Food

6.3

Overall

7.2

Crew

7.9

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
400 reviews
Brussels Airlines
7.2
Good
400 reviews

Boarding

7.3

Comfort

7.0

Entertainment

6.2

Food

6.3

Overall

7.2

Crew

7.9

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 $1,806, British Airways can have you in Monrovia from Philadelphia in 30h 40m. 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 15% 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 $870). Flying from Philadelphia to Monrovia in July is currently the most expensive (average of $1,268). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 4月 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
Brussels AirlinesCheapest$1,395Average$1,593FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.