ROB - PHL

$1,657 Find Cheap Flights from Monrovia to Philadelphia - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$1,657
Typical prices: $1,584-$1,648
Multiple Airlines
Sun 10/14Sun 11/4
ROB - PHL • 2 stops
When to travel
October
Cheapest • 2% price drop
February
Most popular
Good to know
+1
Good to know
+1
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Booking Insights
Flight Deals

Cheap Flights from Monrovia to Philadelphia (ROB-PHL)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Monrovia to Philadelphia

Wed, Oct 14 - Wed, Nov 4
Multiple Airlines Logo
9:10 pm - 9:32 pmROB  Monrovia Roberts Intl-PHL Philadelphia
28h 22m2 stops Brussels Bruxelles-National Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
3:20 pm - 7:00 pmPHL  Philadelphia-ROB Monrovia Roberts Intl
22h 40m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National
$1,657Multiple Airlines
Tue, Oct 13 - Wed, Nov 4
United Airlines Logo
9:10 pm - 7:42 pmROB  Monrovia Roberts Intl-PHL Philadelphia
26h 32m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
United Airlines Logo
10:30 am - 7:00 pmPHL  Philadelphia-ROB Monrovia Roberts Intl
27h 30m2 stops Washington, D.C. Dulles Intl Brussels Bruxelles-National
$1,740United Airlines
Tue, Oct 13 - Tue, Nov 3
United Airlines Logo
9:10 pm - 6:42 pmROB  Monrovia Roberts Intl-PHL Philadelphia
25h 32m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl
United Airlines Logo
7:40 pm - 7:00 pmPHL  Philadelphia-ROB Monrovia Roberts Intl
42h 20m2 stops Washington, D.C. Dulles Intl Brussels Bruxelles-National
$1,751United Airlines
Tue, Oct 13 - Sun, Nov 8
United Airlines Logo
9:10 pm - 2:20 pmROB  Monrovia Roberts Intl-PHL Philadelphia
45h 10m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl
United Airlines Logo
7:40 pm - 9:15 pmPHL  Philadelphia-ROB Monrovia Roberts Intl
44h 35m3 stops Washington, D.C. Dulles Intl Brussels Bruxelles-National Freetown Lungi Intl
$1,811United Airlines
Wed, Oct 14 - Thu, Nov 5
Multiple Airlines Logo
9:10 pm - 9:32 pmROB  Monrovia Roberts Intl-PHL Philadelphia
28h 22m2 stops Brussels Bruxelles-National Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
5:40 pm - 9:15 pmPHL  Philadelphia-ROB Monrovia Roberts Intl
22h 35m3 stops Frankfurt am Main Brussels Bruxelles-National Freetown Lungi Intl
$1,834Multiple Airlines
Fri, Oct 16 - Wed, Nov 4
Multiple Airlines Logo
9:10 pm - 4:05 pmROB  Monrovia Roberts Intl-PHL Philadelphia
46h 55m2 stops Brussels Bruxelles-National Frankfurt am Main
Multiple Airlines Logo
3:20 pm - 7:00 pmPHL  Philadelphia-ROB Monrovia Roberts Intl
22h 40m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National
$1,929Multiple Airlines
Tue, Oct 13 - Sat, Nov 7
United Airlines Logo
9:10 pm - 6:14 pmROB  Monrovia Roberts Intl-PHL Philadelphia
25h 04m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
United Airlines Logo
6:00 am - 9:15 pmPHL  Philadelphia-ROB Monrovia Roberts Intl
34h 15m3 stops Washington, D.C. Dulles Intl Brussels Bruxelles-National Freetown Lungi Intl
$1,950United Airlines
Wed, Oct 14 - Wed, Nov 4
Multiple Airlines Logo
7:30 am - 2:30 pmROB  Monrovia Roberts Intl-PHL Philadelphia
35h 00m3 stops Accra Kotoka Abidjan Felix H. Boigny Doha Hamad Intl
Multiple Airlines Logo
8:45 pm - 5:50 pmPHL  Philadelphia-ROB Monrovia Roberts Intl
40h 05m3 stops Doha Hamad Intl Abidjan Felix H. Boigny Accra Kotoka
$1,964Multiple Airlines
Tue, Oct 13 - Fri, Nov 6
United Airlines Logo
9:10 pm - 2:20 pmROB  Monrovia Roberts Intl-PHL Philadelphia
45h 10m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl
United Airlines Logo
7:40 pm - 9:15 pmPHL  Philadelphia-ROB Monrovia Roberts Intl
44h 35m3 stops Washington, D.C. Dulles Intl Brussels Bruxelles-National Freetown Lungi Intl
$2,067United Airlines
Fri, Oct 16 - Tue, Nov 3
United Airlines Logo
9:10 pm - 9:29 pmROB  Monrovia Roberts Intl-PHL Philadelphia
28h 19m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
United Airlines Logo
1:20 pm - 9:15 pmPHL  Philadelphia-ROB Monrovia Roberts Intl
26h 55m3 stops Chicago O'Hare Intl Brussels Bruxelles-National Freetown Lungi Intl
$2,165United Airlines
Booking Insights

Price, demand and travel trends for Monrovia to Philadelphia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Monrovia to Philadelphia with more confidence.

What is the cheapest airline to fly from Monrovia to Philadelphia?

United Airlines ($1,740) offered the cheapest round-trip ticket from Monrovia to Philadelphia in the last 5 days.

Find deals

Key details for Monrovia to Philadelphia flights

Low season

August
Most popular time to fly with an average 7% increase in price.

When to book flights from Monrovia to Philadelphia

Are your dates flexible? Find out the best times to travel from Monrovia to Philadelphia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Monrovia to Philadelphia flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Monrovia to Philadelphia?

    Flights from Monrovia to Philadelphia usually depart from Monrovia Roberts Intl (ROB) and arrive at Philadelphia (PHL).

  • What cabin classes can I book on flights from Monrovia to Philadelphia?

    Only Economy Class is available on flights from Monrovia to Philadelphia.

  • Can I save money by using flexible dates for flights from Monrovia to Philadelphia?

    Yes. Being flexible with your travel dates can save you up to 8% on the Monrovia to Philadelphia route. Wednesday is the cheapest departure day at $1,584 round-trip on average, while Sunday is the most expensive at $1,718, a difference of $134. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Philadelphia?

    Some of the most popular sights in Philadelphia are Philadelphia Convention Center, Rittenhouse Square and Philadelphia Stadium. These are among the most viewed places in Philadelphia on KAYAK.

  • Do I need a passport to fly from Monrovia to Philadelphia?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Monrovia to Philadelphia changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $1,657 to $11,297. That means the highest observed fare was about 7x higher than the lowest one.

  • What is the time difference between Monrovia and Philadelphia?

    Philadelphia is 4 hours behind Monrovia (Eastern Time vs Greenwich Mean Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Philadelphia Airport (PHL)?

    Philadelphia Airport (PHL) hosts 5 major car rental companies, with daily rates starting from around $28 for economy cars. Top options include:
    • Payless
    • Dollar
    • Hertz
    • Thrifty
    • Budget

Your guide to booking Monrovia to Philadelphia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average $1,584 - about $134 less than Sunday (8% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Monrovia to Philadelphia trip for October. Fares historically average $1,575 round-trip in that month - typically $143 less than the most expensive month, which is February (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Philadelphia Airport.
    - Embassy Suites by Hilton Philadelphia Airport
    - DoubleTree by Hilton Philadelphia Airport
    - Microtel Inn & Suites by Wyndham Philadelphia Airport

More options for your flight from Monrovia to Philadelphia

Complete your trip to Philadelphia with a hotel stay or car rental

Car rentals in Philadelphia
Hotels in Philadelphia
Vacations in Philadelphia