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$1,061+ Cheap flights from Monrovia (ROB) to Philadelphia (PHL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
ROB — PHL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Monrovia to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Monrovia (ROB) to Philadelphia (PHL). 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 12, 2025.

Round-trip from

$1,540
(United Airlines)

One-way from

$1,061
(Trip.com)
From Monrovia Roberts Intl to Philadelphia
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One-way flight from Monrovia Roberts Intl to Philadelphia
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Find flight deals from Monrovia to Philadelphia

Cheapest flights from Monrovia to Philadelphia
Explore the most affordable flight options available from Monrovia to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/69:10 pmROB - PHL
2 stops41h 37mUnited Airlines
Mon 7/287:59 pmPHL - ROB
3 stops43h 51mUnited Airlines
Deal found 6/10$1,540
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/69:10 pmROB - PHL
2 stops46h 50mMultiple Airlines
Tue 7/293:20 pmPHL - ROB
3 stops24h 30mMultiple Airlines
Deal found 6/10$1,814
This Brussels Airlines deal was found by Cheapflights users on 6/10. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/69:10 pmROB - PHL
3 stops49h 38mBrussels Airlines
Tue 7/295:35 pmPHL - ROB
3 stops22h 15mBrussels Airlines
Deal found 6/10$2,297

Cheapflights Fare Finder

Customize your flight search to find flights from Monrovia to Philadelphia 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 12, 2025.
Use the filters below to find and compare flights from Monrovia to Philadelphia that are best for you.

Fly from

Monrovia

Fly to

Philadelphia

Route

Depart

Return

Price

MonroviaPhiladelphia

ROB - PHL

ROBPHL

Monrovia Roberts Intl

Sun 7/6

9:10 pm-10:47 am

2 stops41h 37m

Philadelphia

Mon 7/28

7:59 pm-7:50 pm

3 stops43h 51m

$1,540

MonroviaPhiladelphia

ROB - PHL

ROBPHL

Monrovia Roberts Intl

Sun 7/6

9:10 pm-4:00 pm

2 stops46h 50m

Philadelphia

Tue 7/29

3:20 pm-7:50 pm

3 stops24h 30m

$1,814

MonroviaPhiladelphia

ROB - PHL

ROBPHL

Monrovia Roberts Intl

Sun 7/6

9:10 pm-6:48 pm

3 stops49h 38m

Philadelphia

Tue 7/29

5:35 pm-7:50 pm

3 stops22h 15m

$2,297

MonroviaPhiladelphia

ROB - PHL

ROBPHL

Monrovia Roberts Intl

Fri 7/4

6:35 am-1:40 pm

2 stops35h 05m

$1,061

MonroviaPhiladelphia

ROB - PHL

ROBPHL

Monrovia Roberts Intl

Sun 7/6

9:10 pm-12:30 am

2 stops31h 20m

$1,289

MonroviaPhiladelphia

ROB - PHL

ROBPHL

Monrovia Roberts Intl

Wed 7/2

5:45 am-1:00 pm

2 stops35h 15m

$1,339

MonroviaPhiladelphia

ROB - PHL

ROBPHL

Monrovia Roberts Intl

Sun 7/6

9:10 pm-4:00 pm

2 stops46h 50m

$1,340

MonroviaPhiladelphia

ROB - PHL

ROBPHL

Monrovia Roberts Intl

Fri 7/4

9:10 pm-4:00 pm

3 stops46h 50m

$6,662

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Monrovia to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Monrovia 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 Monrovia to Philadelphia

Rainfall in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

Temperature in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated June 12, 2025.
SWISS
7.5
Good
1,623 reviews

Boarding

7.6

Comfort

7.4

Food

7.0

Overall

7.5

Entertainment

6.7

Crew

8.2

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.
SWISS
7.5
Good
1,623 reviews
SWISS
7.5
Good
1,623 reviews

Boarding

7.6

Comfort

7.4

Food

7.0

Overall

7.5

Entertainment

6.7

Crew

8.2

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.
Brussels Airlines
7.4
Good
355 reviews
SWISS
7.5
Good
1,623 reviews

Boarding

7.6

Comfort

7.4

Food

7.0

Overall

7.5

Entertainment

6.7

Crew

8.2

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.
United Airlines
7.4
Good
8,790 reviews
SWISS
7.5
Good
1,623 reviews

Boarding

7.6

Comfort

7.4

Food

7.0

Overall

7.5

Entertainment

6.7

Crew

8.2

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.
British Airways
6.6
Okay
7,008 reviews
SWISS
7.5
Good
1,623 reviews

Boarding

7.6

Comfort

7.4

Food

7.0

Overall

7.5

Entertainment

6.7

Crew

8.2

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

ZRH - ATH

The website is difficult to navigate. You pay for everything. The carry on baggage policy is complicated. The food choices were poor and the seat was uncomfortable.

Related info for your journey

Find useful and relevant information for your journey from Monrovia to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Monrovia to Philadelphia round-trip?

    Our cheapest airline available from Monrovia to Philadelphia is United Airlines. Our recent data shows that you can find tickets from as low as $1,540 on this airline. An additional option worth looking into is Brussels Airlines, starting at $2,297.

  • What are the cheapest airlines to fly from Monrovia to Philadelphia one-way?

    The cheapest airlines for a one-way flight from Monrovia to Philadelphia are United Airlines ($1,289), British Airways ($1,339), and Brussels Airlines ($1,340).

  • Can I find deals for flights from Monrovia to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Monrovia to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Monrovia to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Monrovia to Philadelphia.

  • Can I find deals for business class flights from Monrovia to Philadelphia?

    Yes. Cheapflights offers flight deals from Monrovia to Philadelphia 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 Monrovia to Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from Monrovia to Philadelphia (average of $236). Flying from Monrovia to Philadelphia in March is currently the most expensive (average of $295). 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

Traveling to a place near Monrovia?

Book flights to Monrovia if you plan to visit one of these locations
Vineland
Wildwood
Pottstown
King of Prussia
Cherry Hill
Exton
Ocean City
Chester
Essington
Reading
Newark
Middletown
Millville
Ephrata
Camden
Dover
Elkton
Willow Grove
Glen Mills
Springfield

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Alternative routes for Monrovia to Philadelphia

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