HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Monrovia

$1,695+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ROB
Sep 2 — Sep 91
Wed 9/2
Wed 9/9
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 August 3, 2026.

This oojo deal was found by Cheapflights users on 8/1. 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.
Fri 11/136:00 am
PHL
-
ROB
2 stops27h 45m
Ethiopian Air
Mon 11/3011:05 am
ROB
-
PHL
3 stops31h 46m
Ethiopian Air
Deal found 8/1$1,695
This oojo deal was found by Cheapflights users on 7/29. 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.
Sat 10/311:16 pm
PHL
-
ROB
2 stops45h 29m
Ethiopian Air
Mon 11/307:10 am
ROB
-
PHL
3 stops31h 14m
Ethiopian Air
Deal found 7/29$1,705
This Ovago deal was found by Cheapflights users on 7/29. 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 10/316:00 am
PHL
-
ROB
2 stops31h 50m
Multiple Airlines
Mon 11/307:30 am
ROB
-
PHL
2 stops30h 54m
Multiple Airlines
Deal found 7/29$1,773
This Gotogate deal was found by Cheapflights users on 7/30. 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 11/23:20 pm
PHL
-
ROB
3 stops24h 55m
Multiple Airlines
Fri 11/1310:45 pm
ROB
-
PHL
2 stops20h 59m
Multiple Airlines
Deal found 7/30$1,800
This oojo deal was found by Cheapflights users on 7/31. 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.
Mon 9/147:40 pm
PHL
-
ROB
2 stops39h 05m
Ethiopian Air
Mon 9/2111:05 am
ROB
-
PHL
3 stops31h 15m
Ethiopian Air
Deal found 7/31$1,802
This Ovago deal was found by Cheapflights users on 7/31. 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 10/311:16 pm
PHL
-
ROB
3 stops27h 59m
Brussels Airlines
Sun 2/2810:45 pm
ROB
-
PHL
2 stops23h 37m
Brussels Airlines
Deal found 7/31$1,831
This Expedia deal was found by Cheapflights users on 8/1. 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 Expedia 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
Multiple Airlines
Fri 2/2610:45 pm
ROB
-
PHL
2 stops24h 55m
Multiple Airlines
Deal found 8/1$1,846
This oojo deal was found by Cheapflights users on 7/30. 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.
Sat 8/86:10 am
PHL
-
ROB
2 stops28h 35m
Ethiopian Air
Mon 8/3111:05 am
ROB
-
PHL
3 stops31h 35m
Ethiopian Air
Deal found 7/30$1,881
This oojo deal was found by Cheapflights users on 8/1. 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.
Sat 8/2910:30 am
PHL
-
ROB
3 stops27h 20m
Ethiopian Air
Sat 9/57:30 am
ROB
-
PHL
3 stops34h 51m
Ethiopian Air
Deal found 8/1$1,884

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 August 3, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,695
(oojo)

Popular in

July

Cheapest in

February

Average price

$1,541
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. 8% potential increase in price ($161 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 3, 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

Sat 10/31

1:16 pm-2:45 pm

2 stops45h 29m

Monrovia Roberts Intl

Mon 11/30

7:10 am-9:24 am

3 stops31h 14m

$1,705

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Sat 10/31

6:00 am-5:50 pm

2 stops31h 50m

Monrovia Roberts Intl

Mon 11/30

7:30 am-9:24 am

2 stops30h 54m

$1,773
Quickest round-trip

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Mon 11/2

3:20 pm-9:15 pm

3 stops24h 55m

Monrovia Roberts Intl

Fri 11/13

10:45 pm-2:44 pm

2 stops20h 59m

$1,800

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Sat 10/31

1:16 pm-9:15 pm

3 stops27h 59m

Monrovia Roberts Intl

Sun 2/28

10:45 pm-5:22 pm

2 stops23h 37m

$1,831

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Thu 11/12

3:20 pm-9:15 pm

3 stops24h 55m

Monrovia Roberts Intl

Fri 2/26

10:45 pm-6:40 pm

2 stops24h 55m

$1,846

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Thu 11/12

10:30 am-2:45 pm

2 stops47h 15m

Monrovia Roberts Intl

Sat 12/26

7:30 am-2:06 pm

3 stops35h 36m

$1,935

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Thu 11/12

5:40 pm-9:15 pm

3 stops22h 35m

Monrovia Roberts Intl

Fri 2/26

10:45 pm-6:40 pm

3 stops24h 55m

$1,975

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Sun 11/15

7:40 pm-9:15 pm

3 stops44h 35m

Monrovia Roberts Intl

Thu 1/14

10:45 pm-6:40 pm

2 stops24h 55m

$2,009

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Wed 12/16

10:15 am-5:50 pm

2 stops26h 35m

Monrovia Roberts Intl

Mon 1/18

7:30 am-1:51 pm

2 stops35h 21m

$2,478

PhiladelphiaMonrovia

PHL - ROB

PHLROB

Philadelphia

Sun 11/15

8:30 pm-2:25 am

2 stops48h 55m

Monrovia Roberts Intl

Thu 1/14

6:40 pm-3:00 pm

2 stops49h 20m

$2,482

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 August.
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
BusinessClassPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 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.

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 3, 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
431 reviews

Boarding

7.4

Comfort

7.0

Crew

7.9

Food

6.3

Entertainment

6.2

Overall

7.3

Reviews

1 / 20
8.0
Excellent

Courtney,Jul 2026

MXP - YUL

For a flight this long, the airline needs to use a plane with lay flat seats. It greatly and negatively impacted the experience. The BIG complaint I have about the flight was the temperature. I was wearing a jogging suit with a t-shirt under, I also had my jacket on my legs and the one blanket I could get onboard over the top of my body with a hood on my head and I was freezing! The reason I could only get one blanket is everyone else was also freezing and also requested blankets. I hope this stops!
Brussels Airlines
7.3
Good
431 reviews
Brussels Airlines
7.3
Good
431 reviews

Boarding

7.4

Comfort

7.0

Crew

7.9

Food

6.3

Entertainment

6.2

Overall

7.3

Reviews

1 / 20
8.0
Excellent

Courtney,Jul 2026

MXP - YUL

For a flight this long, the airline needs to use a plane with lay flat seats. It greatly and negatively impacted the experience. The BIG complaint I have about the flight was the temperature. I was wearing a jogging suit with a t-shirt under, I also had my jacket on my legs and the one blanket I could get onboard over the top of my body with a hood on my head and I was freezing! The reason I could only get one blanket is everyone else was also freezing and also requested blankets. I hope this stops!

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 $1,695, Ethiopian Air can have you in Monrovia from Philadelphia in 27h 45m. The distance between Philadelphia and Monrovia is about 4614 mi.

  • 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 $1,398 on this airline. You may be able to fly from Philadelphia to Monrovia for 20% 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

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 August 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Brussels AirlinesCheapest$1,398Average$1,788FlexibilityNo 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.