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$802 Cheap Flights from Washington (IAD) to Monrovia (ROB)

View $802 flight on Tue, Aug 11, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Monrovia (ROB-Roberts Intl.)

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Cheap Flights from Washington to Monrovia (IAD-ROB)

Prices were available within the past 7 days and start at $802 for one-way flights and $1,150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Ethiopian Airlines
Tue, Nov 24 - Tue, Dec 22
IAD
Washington
ROB
Monrovia
$1,150 Roundtrip, found 1 day ago
$1,150
Roundtrip
found 1 day ago
Select Ethiopian Airlines flight, departing Tue, Nov 24 from Washington to Monrovia, returning Tue, Dec 22, priced at $1,150 found 1 day ago
Royal Air Maroc
Fri, Jan 8 - Fri, Jan 22
IAD
Washington
ROB
Monrovia
$1,189 Roundtrip, found 3 days ago
$1,189
Roundtrip
found 3 days ago
Select Royal Air Maroc flight, departing Fri, Jan 8 from Washington to Monrovia, returning Fri, Jan 22, priced at $1,189 found 3 days ago
Royal Air Maroc
Wed, Oct 28 - Fri, Nov 20
IAD
Washington
ROB
Monrovia
$1,190 Roundtrip, found 9 hours ago
$1,190
Roundtrip
found 9 hours ago
Select Royal Air Maroc flight, departing Wed, Oct 28 from Washington to Monrovia, returning Fri, Nov 20, priced at $1,190 found 9 hours ago
Ethiopian Airlines
Fri, Sep 18 - Mon, Sep 28
IAD
Washington
ROB
Monrovia
$1,221 Roundtrip, found 16 hours ago
$1,221
Roundtrip
found 16 hours ago
Select Ethiopian Airlines flight, departing Fri, Sep 18 from Washington to Monrovia, returning Mon, Sep 28, priced at $1,221 found 16 hours ago
Ethiopian Airlines
Tue, Dec 1 - Tue, Dec 8
IAD
Washington
ROB
Monrovia
$1,250 Roundtrip, found 17 hours ago
$1,250
Roundtrip
found 17 hours ago
Select Ethiopian Airlines flight, departing Tue, Dec 1 from Washington to Monrovia, returning Tue, Dec 8, priced at $1,250 found 17 hours ago
Ethiopian Airlines
Fri, Sep 18 - Mon, Sep 28
IAD
Washington
ROB
Monrovia
$1,259 Roundtrip, found 16 hours ago
$1,259
Roundtrip
found 16 hours ago
Select Ethiopian Airlines flight, departing Fri, Sep 18 from Washington to Monrovia, returning Mon, Sep 28, priced at $1,259 found 16 hours ago
Ethiopian Airlines
Fri, Sep 18 - Mon, Sep 28
IAD
Washington
ROB
Monrovia
$1,288 Roundtrip, found 16 hours ago
$1,288
Roundtrip
found 16 hours ago
Select Ethiopian Airlines flight, departing Fri, Sep 18 from Washington to Monrovia, returning Mon, Sep 28, priced at $1,288 found 16 hours ago
Brussels Airlines
Wed, Nov 18 - Thu, Feb 25
IAD
Washington
ROB
Monrovia
$1,364 Roundtrip, found 13 hours ago
$1,364
Roundtrip
found 13 hours ago
Select Brussels Airlines flight, departing Wed, Nov 18 from Washington to Monrovia, returning Thu, Feb 25, priced at $1,364 found 13 hours ago
United
Wed, Nov 18 - Thu, Feb 25
IAD
Washington
ROB
Monrovia
$1,364 Roundtrip, found 13 hours ago
$1,364
Roundtrip
found 13 hours ago
Select United flight, departing Wed, Nov 18 from Washington to Monrovia, returning Thu, Feb 25, priced at $1,364 found 13 hours ago
Air Canada
Wed, Nov 18 - Thu, Feb 25
IAD
Washington
ROB
Monrovia
$1,368 Roundtrip, found 13 hours ago
$1,368
Roundtrip
found 13 hours ago
Select Air Canada flight, departing Wed, Nov 18 from Washington to Monrovia, returning Thu, Feb 25, priced at $1,368 found 13 hours ago

Alternative airports near Monrovia

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Roberts Intl. ROB. Cheapest option available. Average driving time to city center is 49 minutes. Flights from $8,313
ROB
Roberts Intl.
Cheapest
Average driving time to city center49 min
Flights from $8,313

What you need to know for your flight from Washington Dulles Intl. to Roberts Intl.

Washington (IAD) to Monrovia (ROB) at a glance

Discover a range of airlines offering flights from Washington Dulles International Airport (IAD) to Roberts International Airport (ROB) in Monrovia. Compare various options, from full-service carriers to budget-friendly choices, to find the best itinerary that matches your travel plans, schedule, and budget. As you plan your journey, get ready to explore the vibrant sights and neighborhoods that Monrovia has to offer, while keeping an eye on airfares to Monrovia.

  • Fastest flight duration: around 13h 30m in-flight, plus roughly 3h 30m layover with one stop
  • Route distance: roughly 4,700 miles (7,560 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $545–$1175, depending on seasonality and how far ahead you book

Flights from Washington Dulles International Airport (IAD) to Roberts International Airport (ROB)

Based on the latest traveler bookings, here are the top airlines favored for flights from Washington to Monrovia, primarily for one-stop and multi-stop journeys. Popular layovers include Gnassingbe Eyadema International Airport (LFW) with a layover of about 2 hours and 45 minutes, Bole International Airport (ADD) at approximately 3 hours and 30 minutes, and Brussels National Airport (BRU) with a layover of around 5 hours and 15 minutes. These choices allow you to balance pricing, total travel time, and cabin class to create your ideal itinerary.

  • Ethiopian Airlines: This full-service airline provides both one-stop and multi-stop options, with one-way fares usually between $545 and $1430. It represents about 64% of the flights on this route, featuring an in-flight duration of 13 hours and 30 minutes, leading to a total travel time of approximately 22 hours.
  • United: Another full-service option, United offers one-stop and multi-stop flights with one-way prices typically ranging from $545 to $1045. It accounts for around 20% of the departures on this route, with a standard in-flight time of 13 hours and 30 minutes, totaling about 22 hours for the journey.
  • Royal Air Maroc: This full-service carrier provides one-stop service, with one-way fares generally falling between $630 and $995. It constitutes about 9% of the flights on this route, featuring an in-flight duration of 13 hours and 30 minutes, and a total travel time of roughly 22 hours, including layover time.
  • Brussels Airlines: Offering one-stop service, this full-service airline has one-way fares typically ranging from $565 to $865. It makes up about 7% of the departures on this route, with an in-flight duration of 13 hours and 30 minutes, resulting in an overall journey time of approximately 22 hours, including layovers.

Travelers flying from Washington to Monrovia can opt for an upgrade to business class with Ethiopian Airlines, ensuring a more comfortable and premium travel experience on this route.

Alternative routes from Washington (IAD) to Monrovia (ROB)

  • Washington to Monrovia (DCA-ROB): Ronald Reagan Washington National Airport (DCA) is located roughly 23 miles from Washington Dulles International Airport (IAD), offering convenient access to international flights.
  • Washington to Monrovia (IAD-MLW): Spriggs Payne Airport (MLW) is approximately 28 miles away from Roberts International Airport (ROB), providing travelers with additional options for reaching Monrovia.
  • Frederick to Monrovia (FDK-MLW): Frederick Municipal Airport (FDK) is about 32 miles from Washington Dulles International Airport (IAD), while Spriggs Payne Airport (MLW) lies around 28 miles from Roberts International Airport (ROB).

How to find the best prices for flights from Washington (IAD) to Monrovia (ROB)

Getting some of the best deals on flights from Washington to Monrovia is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking at least two months in advance, although most travelers tend to book two to eight weeks ahead. Departures in the afternoon (12 PM to 6 PM) often offer lower prices, while evening flights (6 PM to 12 AM) are more popular. Additionally, flying on Tuesday typically yields cheaper rates, even though Wednesday is the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Monrovia hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Roberts International Airport from Washington Dulles International Airport

Monrovia welcomes travelers from Washington with a range of transport options based on price, convenience, and proximity. For departures, Washington Dulles International Airport is roughly a 40-minute drive (covering about 29 miles) from central Washington. Monrovia city center is approximately a 40-minute drive (covering about 27 miles) from Roberts International Airport, depending on traffic. Here's how to reach Monrovia efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Monrovia, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from Roberts International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Roberts International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.) cost?
You can find cheap one-way flights from $802 and cheap return flights from $1,150 Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.) with Expedia. Return flights typically cost between $1189 and $6575. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.)?
The cheapest month to fly from IAD to ROB is November when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.)?
Enter IAD to ROB and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.)?
Ethiopian Airlines is one of the cheapest airlines offering connecting flights from Washington, DC (IAD) to Monrovia (ROB), with round-trip tickets starting from around $1,334 with a layover in Gnassingbe Eyadema Intl. (LFW). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.)?
The earliest flight from Washington Dulles International Airport (IAD) to Roberts International Airport (ROB) usually departs at around 6:00 AM, operated by United Airlines and Brussels Airlines. This seasonal service is active in March, making it a convenient option for travelers looking to reach Monrovia early. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.)?
For flights from Washington Dulles Intl. (IAD) to Monrovia (ROB), the most popular departure times are in the late afternoon, from 3pm to 6pm. This accounts for around 34% of total traffic. Many major carriers, including United Airlines and South African Airways, operate during this time. Many travelers prefer this timing as it allows for a smooth transition from work to travel.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.)?
Flights from IAD to ROB with one stop typically take around 23 hours 50 minutes, covering approximately 4,722 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.)?
Business class seats are offered on the IAD to ROB route with Ethiopian Airlines and United Airlines.
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Monrovia from Washington Dulles Intl. (IAD)?
If you're planning to travel to Monrovia from Washington Dulles Intl. (IAD), you can fly into Roberts Intl. (ROB) Some flights may connect through major hubs like Pierre Elliott Trudeau Intl. (YUL), ZRH (ZRH), Frankfurt Intl. (FRA) before reaching Monrovia. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Monrovia (ROB-Roberts Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Roberts Intl.
Airlines serving
Brussels Airlines, Delta, Ethiopian Airlines, Kenya Airways, Royal Air Maroc, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$1,150
Distance
4721 mi

Book with confidence

Washington to Monrovia Flights

The cheapest times to fly from Washington to Monrovia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Monrovia are during the month of November. You can find some of the cheapest flights from Washington to Monrovia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Monrovia

Sunday is one of the best days to book for cheap flights from Washington to Monrovia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Monrovia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Monrovia in 2026. You can also book with separate airlines for your outbound and return journeys, from $802 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Monrovia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Monrovia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Monrovia Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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