HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Monrovia

$1,289+ 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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ROB
Jun 11 — Jun 181
Thu 6/11
Thu 6/18
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 May 12, 2026.

This oojo deal was found by Cheapflights users on 5/12. 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.
Sun 11/17:50 pm
PHL
-
ROB
3 stops43h 05m
Multiple Airlines
Sun 11/158:00 am
ROB
-
PHL
3 stops54h 00m
Multiple Airlines
Deal found 5/12$1,289
This Ovago deal was found by Cheapflights users on 5/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:50 pm
PHL
-
ROB
3 stops42h 40m
Multiple Airlines
Wed 12/308:00 am
ROB
-
PHL
3 stops54h 00m
Multiple Airlines
Deal found 5/10$1,463
This Ovago deal was found by Cheapflights users on 5/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:50 pm
PHL
-
ROB
3 stops42h 40m
Multiple Airlines
Wed 12/308:00 am
ROB
-
PHL
3 stops54h 00m
Multiple Airlines
Deal found 5/10$1,617
This Qatar Airways deal was found by Cheapflights users on 5/9. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:50 pm
PHL
-
ROB
3 stops43h 05m
Multiple Airlines
Sat 11/213:05 am
ROB
-
PHL
2 stops34h 55m
Multiple Airlines
Deal found 5/9$1,692
This BusinessClass deal was found by Cheapflights users on 5/10. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/238:05 am
PHL
-
ROB
3 stops31h 45m
Brussels Airlines
Fri 10/169:10 pm
ROB
-
PHL
2 stops21h 37m
Brussels Airlines
Deal found 5/10$1,795
This Gotogate deal was found by Cheapflights users on 5/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/213:25 pm
PHL
-
ROB
3 stops24h 25m
Multiple Airlines
Fri 10/169:10 pm
ROB
-
PHL
2 stops21h 37m
Multiple Airlines
Deal found 5/9$1,807
This KAYAK deal was found by Cheapflights users on 5/10. 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.
Wed 7/227:45 pm
PHL
-
ROB
3 stops44h 05m
Brussels Airlines
Tue 10/139:10 pm
ROB
-
PHL
2 stops21h 37m
Brussels Airlines
Deal found 5/10$1,822
This BusinessClass deal was found by Cheapflights users on 5/11. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:10 am
PHL
-
ROB
3 stops33h 40m
Brussels Airlines
Fri 8/219:10 pm
ROB
-
PHL
2 stops31h 49m
Brussels Airlines
Deal found 5/11$1,823
This BusinessClass deal was found by Cheapflights users on 5/10. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:50 pm
PHL
-
ROB
2 stops57h 00m
Multiple Airlines
Tue 12/297:30 am
ROB
-
PHL
2 stops30h 30m
Multiple Airlines
Deal found 5/10$1,824
This Ovago deal was found by Cheapflights users on 5/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/231:31 pm
PHL
-
ROB
3 stops26h 19m
SWISS
Fri 10/169:10 pm
ROB
-
PHL
3 stops28h 22m
SWISS
Deal found 5/10$1,846
This Ovago deal was found by Cheapflights users on 5/7. 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 7/225:40 pm
PHL
-
ROB
3 stops46h 10m
Brussels Airlines
Thu 11/268:20 pm
ROB
-
PHL
3 stops27h 20m
Brussels Airlines
Deal found 5/7$1,859

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 May 12, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,795
(BusinessClass)

Popular in

December

Cheapest in

February

Average price

$1,785
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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 12, 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 7/23

8:05 am-7:50 pm

3 stops31h 45m

Monrovia Roberts Intl

Fri 10/16

9:10 pm-2:47 pm

2 stops21h 37m

$1,795

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Sat 8/8

6:10 am-7:50 pm

3 stops33h 40m

Monrovia Roberts Intl

Fri 8/21

9:10 pm-12:59 am

2 stops31h 49m

$1,823

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Wed 7/22

5:40 pm-7:50 pm

3 stops46h 10m

Monrovia Roberts Intl

Thu 11/26

8:20 pm-6:40 pm

3 stops27h 20m

$1,859

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Mon 6/15

6:10 am-7:50 pm

3 stops33h 40m

Monrovia Roberts Intl

Tue 9/1

9:10 pm-12:59 am

2 stops31h 49m

$1,980

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Tue 6/16

8:05 am-7:50 pm

3 stops31h 45m

Monrovia Roberts Intl

Wed 9/2

9:10 pm-9:27 pm

2 stops28h 17m

$1,980

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Tue 6/16

11:38 am-7:50 pm

3 stops28h 12m

Monrovia Roberts Intl

Tue 9/1

9:10 pm-9:27 pm

2 stops28h 17m

$1,980

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Mon 6/15

6:10 am-7:50 pm

3 stops33h 40m

Monrovia Roberts Intl

Fri 9/4

9:10 pm-9:27 pm

2 stops28h 17m

$1,980

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Thu 6/18

8:05 am-7:50 pm

3 stops31h 45m

Monrovia Roberts Intl

Wed 9/2

9:10 pm-5:54 pm

2 stops24h 44m

$1,980

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Sun 6/14

7:45 pm-7:50 pm

3 stops44h 05m

Monrovia Roberts Intl

Fri 9/4

9:10 pm-12:59 am

2 stops31h 49m

$1,986

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Thu 7/23

10:32 am-7:50 pm

3 stops29h 18m

Monrovia Roberts Intl

Fri 8/14

9:10 pm-12:59 am

2 stops31h 49m

$2,005

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/10

Showing 1-10 of 12 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 May.
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

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

Currently, February is the cheapest month in which you can book a flight from Philadelphia to Monrovia (average of $1,428). Flying from Philadelphia to Monrovia in December is currently the most expensive (average of $1,881). 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.

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 May 12, 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
7.3
Good
406 reviews

Food

6.3

Comfort

7.0

Overall

7.3

Boarding

7.3

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
7.3
Good
406 reviews
Brussels Airlines
7.3
Good
406 reviews

Food

6.3

Comfort

7.0

Overall

7.3

Boarding

7.3

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 $1,795, Brussels Airlines can have you in Monrovia from Philadelphia in 31h 45m. 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, February is the cheapest month in which you can book a flight from Philadelphia to Monrovia (average of $1,428). Flying from Philadelphia to Monrovia in December is currently the most expensive (average of $1,881). 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 May 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Brussels AirlinesCheapest$1,395Average$1,721FlexibilityNo 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.
Site
©2026 Cheapflights