PHL - ROB

$835 Find Cheap Flights from Philadelphia to Monrovia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Monrovia departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Monrovia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Monrovia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Monrovia, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Philadelphia to Monrovia (PHL-ROB)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Monrovia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Monrovia

Tue, Oct 7 - Tue, Oct 14
Brussels Airlines Logo
3:00 pm - 7:50 pmPHL-ROB
24h 50m2 stops
Brussels Airlines Logo
9:10 pm - 6:57 pmROB-PHL
25h 47m2 stops
$1,401Brussels Airlines
Find Deal
Mon, Oct 6 - Wed, Oct 15
Brussels Airlines Logo
3:00 pm - 7:50 pmPHL-ROB
24h 50m3 stops
Brussels Airlines Logo
9:10 pm - 6:57 pmROB-PHL
25h 47m2 stops
$1,426Brussels Airlines
Find Deal
Mon, Oct 6 - Wed, Oct 15
United Airlines Logo
6:30 am - 7:50 pmPHL-ROB
33h 20m3 stops
United Airlines Logo
9:10 pm - 12:45 amROB-PHL
31h 35m2 stops
$1,434United Airlines
Find Deal
Tue, Jan 6 - Wed, Feb 18
United Airlines Logo
1:10 pm - 9:15 pmPHL-ROB
27h 05m3 stops
United Airlines Logo
10:45 pm - 9:48 amROB-PHL
40h 03m2 stops
$1,440United Airlines
Find Deal
Thu, Jan 1 - Tue, Mar 3
 Logo
10:39 am - 6:45 pmPHL-ROB
27h 06m2 stops
 Logo
10:45 pm - 10:27 amROB-PHL
40h 42m2 stops
$1,450
Find Deal
Wed, Dec 3 - Wed, Mar 25
British Airways Logo
8:00 pm - 4:35 amPHL-ROB
27h 35m2 stops
British Airways Logo
5:35 am - 9:43 amROB-PHL
32h 08m3 stops
$1,511British Airways
Find Deal
Tue, Dec 30 - Wed, Feb 18
British Airways Logo
9:33 pm - 4:35 amPHL-ROB
50h 02m3 stops
British Airways Logo
5:35 am - 9:43 amROB-PHL
33h 08m3 stops
$1,522British Airways
Find Deal
Fri, Jan 2 - Wed, Feb 18
American Airlines Logo
1:35 pm - 4:35 amPHL-ROB
34h 00m2 stops
American Airlines Logo
5:35 am - 12:24 amROB-PHL
23h 49m2 stops
$1,561American Airlines
Find Deal
Thu, Jan 1 - Wed, Feb 4
American Airlines Logo
6:45 pm - 4:35 amPHL-ROB
52h 50m2 stops
American Airlines Logo
5:35 am - 11:22 amROB-PHL
34h 47m2 stops
$1,562American Airlines
Find Deal
Sun, Jan 4 - Wed, Feb 18
 Logo
7:50 pm - 4:35 amPHL-ROB
51h 45m2 stops
 Logo
5:35 am - 12:24 amROB-PHL
23h 49m2 stops
$1,585
Find Deal

Everything you should know

Top airlines
Brussels Airlines
Cheapest • from $1,401 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$1,401
Brussels Airlines
Tue 10/7Tue 10/14
PHL - ROB • 2 stops
Cheapest one-way
$835
Brussels Airlines
Sun 1/4
PHL - ROB • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Monrovia!
Booking Insights

KAYAK's insights & trends for Philadelphia to Monrovia flights

Get data-powered insights and trends into flights from Philadelphia to Monrovia to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Philadelphia to Monrovia?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Philadelphia to Monrovia were found on Brussels Airlines ($1,401) and United Airlines ($1,434).

Good to know

Cheapest flight$835
Most popular time to fly with an average 3% increase in price.
Flight from Philadelphia to Monrovia

When to book flights from Philadelphia to Monrovia

Are your dates flexible? Find out the best times to travel from Philadelphia to Monrovia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Monrovia

  • What is the cheapest flight from Philadelphia to Monrovia?

    In the last 3 days, the lowest price for a flight from Philadelphia to Monrovia was $835 for a one-way ticket and $1,401 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Monrovia?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Philadelphia and on arrival in Monrovia.

  • Which airports will I be using when flying from Philadelphia to Monrovia?

    Philadelphia and Monrovia are both served by 1 main airport. You will leave Philadelphia from Philadelphia and will be arriving at Monrovia Roberts Intl.

  • Which aircraft models fly most regularly from Philadelphia to Monrovia?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Monrovia?

    Star Alliance, and oneworld are the airline alliances operating flights between Philadelphia and Monrovia, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Philadelphia to Monrovia, United Airlines or Brussels Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Monrovia are United Airlines and Brussels Airlines. With an average price for the route of $1,753 and an overall rating of 7.4, United Airlines is the most popular choice. Brussels Airlines is also a great choice for the route, with an average price of $1,584 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Philadelphia to Monrovia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Monrovia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Monrovia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Monrovia from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Monrovia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Monrovia with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and ROB can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Monrovia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Monrovia from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Philadelphia to Monrovia

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Monrovia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Monrovia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8929 reviews
8.1Crew
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
Airline reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

2.0 MediocreAnonymous, Sep 2025SFO - MEX
Read more United Airlines reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

Too cramped up for the better seats I paid for.

I didn’t like my seat in my return flight from Montreal to Orlando at all; considering I paid extra for better seats. That middle seat was cramped up way too much.

Suitcase didn’t arrive to Stockholm. Chairs y comfy and not even water is offered

Bad baggage and people management at boarding forcing me to dispatch my bad despite being the perfect size and respecting everything perfectly, whereas many did not and many free empty spots on the plane as usual… making me loose time and my planned bus at arrival to go to Geneva. Costing me 100 euros extra! So Brussels airlines needs to refund me

I never board the flight. My visa was delayed and when I tried calling Kayak, no one answer and I still have not heard from anyone.

All great. Very efficient. Good emails that kept us in the know

Original flight was canceled, booked another one and find out when checking I was on the waiting list. Horrible experience

Actually this is my first time using airline I was in every single thing that happened throughout our journey, the appearance of the plane inside furnished about the seating the flight attendants and many many more I was so excited throughout thank you Brussels Airlines for the great service.

On board service was decent. I like the legroom at UA that seems to be more than in other airlines

It was really good because the employees were very nice and fun to talk to. The entertainment was nice because they had plenty of movies to watch.

Everything you need to know for your flight from Philadelphia to Monrovia

Information on your arrival and departure airports

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