$1,783+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ROB
Oct 6 — Oct 131
Round-trip
1 adult, Economy
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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
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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
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Best
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Cheapest flights from Philadelphia to MonroviaExplore 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 6, 2026.
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 6, 2026.
This Qatar Airways deal was found by Cheapflights users on 9/6. 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.
Mon 9/219:30 pm -
2 stops40h 20m
Sun 10/47:30 am -
3 stops35h 00m
Deal found 9/6![Multiple Airlines logo]()
$1,783
This Travelocity deal was found by Cheapflights users on 9/2. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:30 pm -
2 stops51h 05m
Tue 9/227:30 am -
2 stops35h 00m
Deal found 9/2![Multiple Airlines logo]()
$1,877
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Sun 10/187:30 pm -
3 stops44h 20m
Sun 10/2510:45 pm -
2 stops26h 55m
Deal found 9/3![United Airlines logo]()
$1,885
This oojo deal was found by Cheapflights users on 9/4. 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 10/106:15 am -
2 stops28h 30m
Sat 12/57:30 am -
3 stops31h 09m
Deal found 9/4![Ethiopian Air logo]()
$1,934
This Ovago deal was found by Cheapflights users on 9/5. 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 11/253:05 pm -
3 stops25h 10m
Fri 12/1810:45 pm -
2 stops46h 20m
Deal found 9/5![Brussels Airlines logo]()
$1,995
This BusinessClass deal was found by Cheapflights users on 9/2. 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.
Tue 9/83:25 pm -
3 stops24h 25m
Tue 9/229:10 pm -
2 stops21h 37m
Deal found 9/2![Brussels Airlines logo]()
$2,009
This KAYAK deal was found by Cheapflights users on 9/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2710:30 am -
2 stops26h 20m
Sun 12/2010:45 pm -
2 stops30h 49m
Deal found 9/1![Multiple Airlines logo]()
$2,015
This Ovago deal was found by Cheapflights users on 9/4. 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.
Fri 11/2710:30 am -
2 stops47h 15m
Sun 12/2011:00 am -
3 stops32h 13m
Deal found 9/4![Ethiopian Air logo]()
$2,103
Best flights from Philadelphia to MonroviaDiscover carefully curated flight deals from Philadelphia to Monrovia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
Discover carefully curated flight deals from Philadelphia to Monrovia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
This United deal was found by Cheapflights users on 9/2. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/178:00 pm -
3 stops44h 15m
Sun 3/1410:45 pm -
2 stops23h 55m
Deal found 9/2![Multiple Airlines logo]()
$1,845
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Sun 10/187:30 pm -
3 stops44h 20m
Sun 10/2510:45 pm -
2 stops26h 55m
Deal found 9/3![United Airlines logo]()
$1,885
This oojo deal was found by Cheapflights users on 9/4. 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 10/106:15 am -
2 stops28h 30m
Sat 12/57:30 am -
3 stops31h 09m
Deal found 9/4![Ethiopian Air logo]()
$1,934
This Ovago deal was found by Cheapflights users on 9/5. 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 11/253:05 pm -
3 stops25h 10m
Fri 12/1810:45 pm -
2 stops46h 20m
Deal found 9/5![Brussels Airlines logo]()
$1,995
This Qatar Airways deal was found by Cheapflights users on 9/6. 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.
Mon 9/213:57 pm -
3 stops45h 53m
Sun 10/47:30 am -
3 stops35h 00m
Deal found 9/6![Multiple Airlines logo]()
$1,907
This oojo deal was found by Cheapflights users on 9/3. 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 1/16:24 am -
2 stops27h 21m
Thu 1/1411:00 am -
3 stops32h 15m
Deal found 9/3![Ethiopian Air logo]()
$2,007
This KAYAK deal was found by Cheapflights users on 9/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2710:30 am -
2 stops26h 20m
Sun 12/2010:45 pm -
2 stops30h 49m
Deal found 9/1![Multiple Airlines logo]()
$2,015
This oojo deal was found by Cheapflights users on 9/1. 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 11/2710:30 am -
2 stops47h 15m
Sun 12/2011:00 am -
3 stops32h 13m
Deal found 9/1![Ethiopian Air logo]()
$2,133
Last-minute flights from Philadelphia to MonroviaDiscover last-minute flight deals from Philadelphia to Monrovia. Data last updated September 6, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Monrovia. Data last updated September 6, 2026 and is based on user searches.
This Travelocity deal was found by Cheapflights users on 9/2. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:30 pm -
2 stops51h 05m
Tue 9/227:30 am -
2 stops35h 00m
Deal found 9/2![Multiple Airlines logo]()
$1,877
This BusinessClass deal was found by Cheapflights users on 9/2. 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.
Tue 9/83:25 pm -
3 stops24h 25m
Tue 9/229:10 pm -
2 stops21h 37m
Deal found 9/2![Brussels Airlines logo]()
$2,009
This Qatar Airways deal was found by Cheapflights users on 9/6. 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.
Mon 9/219:30 pm -
2 stops40h 20m
Sun 10/47:30 am -
3 stops35h 00m
Deal found 9/6![Multiple Airlines logo]()
$1,783
This oojo deal was found by Cheapflights users on 9/4. 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 10/106:15 am -
2 stops28h 30m
Sat 12/57:30 am -
3 stops31h 09m
Deal found 9/4![Ethiopian Air logo]()
$1,934
This FlightHub deal was found by Cheapflights users on 9/4. 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.
Sat 10/109:30 pm -
3 stops40h 20m
Sat 12/56:40 pm -
3 stops49h 10m
Deal found 9/4![Multiple Airlines logo]()
$2,270
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Sun 10/187:30 pm -
3 stops44h 20m
Sun 10/2510:45 pm -
2 stops26h 55m
Deal found 9/3![United Airlines logo]()
$1,885
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Fri 10/307:40 pm -
3 stops45h 35m
Tue 11/310:45 pm -
2 stops25h 06m
Deal found 9/3![United Airlines logo]()
$2,423
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 September 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,783 (Qatar Airways) |
Popular in | July |
Cheapest in | February |
Average price | $1,788 |
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 7,457,451 searches. Data last updated September 6, 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
Cheapest round-trip
PhiladelphiaMonrovia
PHL Philadelphia - ROB Monrovia Roberts Intl
PHLROB
Philadelphia
Wed 2/17
8:00 pm-9:15 pm
3 stops44h 15m
Monrovia Roberts Intl
Sun 3/14
10:45 pm-6:40 pm
2 stops23h 55m
$1,845
PhiladelphiaMonrovia
PHL Philadelphia - ROB Monrovia Roberts Intl
PHLROB
Philadelphia
Sun 10/18
7:30 pm-7:50 pm
3 stops44h 20m
Monrovia Roberts Intl
Sun 10/25
10:45 pm-9:40 pm
2 stops26h 55m
$1,885
PhiladelphiaMonrovia
PHL Philadelphia - ROB Monrovia Roberts Intl
PHLROB
Philadelphia
Mon 9/21
3:57 pm-5:50 pm
3 stops45h 53m
Monrovia Roberts Intl
Sun 10/4
7:30 am-2:30 pm
3 stops35h 00m
$1,907
PhiladelphiaMonrovia
PHL Philadelphia - ROB Monrovia Roberts Intl
PHLROB
Philadelphia
Sat 10/10
6:15 am-2:45 pm
2 stops28h 30m
Monrovia Roberts Intl
Sat 12/5
7:30 am-9:39 am
3 stops31h 09m
$1,934
PhiladelphiaMonrovia
PHL Philadelphia - ROB Monrovia Roberts Intl
PHLROB
Philadelphia
Wed 11/25
3:05 pm-9:15 pm
3 stops25h 10m
Monrovia Roberts Intl
Fri 12/18
10:45 pm-4:05 pm
2 stops46h 20m
$1,995
PhiladelphiaMonrovia
PHL Philadelphia - ROB Monrovia Roberts Intl
PHLROB
Philadelphia
Fri 1/1
6:24 am-2:45 pm
2 stops27h 21m
Monrovia Roberts Intl
Thu 1/14
11:00 am-2:15 pm
3 stops32h 15m
$2,007
Quickest round-trip
PhiladelphiaMonrovia
PHL Philadelphia - ROB Monrovia Roberts Intl
PHLROB
Philadelphia
Fri 11/27
10:30 am-5:50 pm
2 stops26h 20m
Monrovia Roberts Intl
Sun 12/20
10:45 pm-12:34 am
2 stops30h 49m
$2,015
PhiladelphiaMonrovia
PHL Philadelphia - ROB Monrovia Roberts Intl
PHLROB
Philadelphia
Fri 11/27
10:30 am-2:45 pm
2 stops47h 15m
Monrovia Roberts Intl
Sun 12/20
11:00 am-2:13 pm
3 stops32h 13m
$2,133
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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.
PHL-ROB
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 September 6, 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.
Overall
7.3
Entertainment
6.2
Comfort
7.0
Boarding
7.4
Crew
7.9
Food
6.4
Reviews
1 / 20
8.0
ExcellentCourtney,Jul 2026
MXP - YUL
Overall
7.3
Entertainment
6.2
Comfort
7.0
Boarding
7.4
Crew
7.9
Food
6.4
Reviews
1 / 20
8.0
ExcellentCourtney,Jul 2026
MXP - YUL
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.
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Philadelphia and Monrovia flights
Browse other Philadelphia and Monrovia flight options. Last updated on September 6, 2026.
Other flights from Philadelphia
Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on September 6, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,398 | Average$1,788 | FlexibilityNo cancel fee | On-timeN/A |