PHL - ROB

$781 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 2/28. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$1,382
Brussels Airlines
Mon 3/9Wed 3/18
PHL - ROB • 3 stops
Cheapest one-way
$781
Brussels Airlines
Sat 2/28
PHL - ROB • 3 stops
Top airlines
Brussels Airlines
Cheapest • from $1,382 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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Flight Deals
Booking Insights
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

Mon, Mar 9 - Wed, Mar 18
Brussels Airlines Logo
3:30 pm - 9:15 pm
PHL
-
ROB
25h 45m
3 stops
Brussels Airlines Logo
10:45 pm - 7:09 pm
ROB
-
PHL
24h 24m
2 stops
$1,382Brussels Airlines
Mon, Mar 9 - Tue, Mar 17
SWISS Logo
10:35 am - 9:15 pm
PHL
-
ROB
30h 40m
3 stops
SWISS Logo
10:45 pm - 9:09 pm
ROB
-
PHL
26h 24m
2 stops
$1,399SWISS
Sun, Mar 8 - Wed, Mar 18
United Airlines Logo
7:45 pm - 9:15 pm
PHL
-
ROB
45h 30m
3 stops
United Airlines Logo
10:45 pm - 7:09 pm
ROB
-
PHL
24h 24m
2 stops
$1,442United Airlines
Sun, Mar 8 - Tue, Mar 17
Brussels Airlines Logo
6:40 pm - 9:15 pm
PHL
-
ROB
46h 35m
3 stops
Brussels Airlines Logo
10:45 pm - 7:09 pm
ROB
-
PHL
24h 24m
2 stops
$1,446Brussels Airlines
Tue, Mar 10 - Wed, Mar 18
Multiple Airlines Logo
3:30 pm - 9:15 pm
PHL
-
ROB
25h 45m
3 stops
Multiple Airlines Logo
10:45 pm - 5:05 pm
ROB
-
PHL
22h 20m
2 stops
$1,459Multiple Airlines
Tue, Feb 17 - Fri, Mar 6
United Airlines Logo
3:05 pm - 9:15 pm
PHL
-
ROB
25h 10m
3 stops
United Airlines Logo
8:05 pm - 9:09 pm
ROB
-
PHL
30h 04m
3 stops
$1,461United Airlines
Sun, Mar 8 - Wed, Mar 18
Brussels Airlines Logo
6:40 pm - 9:15 pm
PHL
-
ROB
46h 35m
3 stops
Brussels Airlines Logo
10:45 pm - 5:05 pm
ROB
-
PHL
22h 20m
2 stops
$1,470Brussels Airlines
Wed, Feb 25 - Wed, Apr 1
British Airways Logo
7:45 pm - 2:05 am
PHL
-
ROB
25h 20m
2 stops
British Airways Logo
5:45 am - 3:30 pm
ROB
-
PHL
37h 45m
2 stops
$1,485British Airways
Wed, Feb 11 - Sun, Feb 22
United Airlines Logo
7:45 pm - 6:45 pm
PHL
-
ROB
42h 00m
2 stops
United Airlines Logo
10:45 pm - 7:04 pm
ROB
-
PHL
25h 19m
2 stops
$1,492United Airlines
Fri, Feb 27 - Wed, Apr 1
British Airways Logo
6:35 pm - 2:05 am
PHL
-
ROB
26h 30m
2 stops
British Airways Logo
5:45 am - 4:40 pm
ROB
-
PHL
38h 55m
2 stops
$1,510British Airways
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 ($1,382) and SWISS ($1,399).

Good to know

Cheapest flight$781
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 $781 for a one-way ticket and $1,382 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 is the only airline alliance operating flights between Philadelphia and Monrovia.

  • 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 $1,663 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 9215 reviews
8.1Crew
6.6Food
7.1Entertainment
7.7Boarding
7.3Comfort
Airline reviews

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

8.0 ExcellentAnonymous, Jan 2026
ORD - TPA
Read more United Airlines reviews

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

The food was terrible this time. Otherwise pleasant, quiet, on-time.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

Flight from London was delayed so missed the connecting flight. Taking 2 days to get to destination which should have only taken a few hours.

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

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

Information on your arrival and departure airports