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$925 Cheap Flights from Monrovia (ROB) to Washington (IAD)

View $925 flight on Tue, Oct 20, 2026Opens in a new window

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

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Cheap Flights from Monrovia to Washington (ROB-IAD)

Prices were available within the past 7 days and start at $925 for one-way flights and $1,209 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Brussels Airlines
Wed, Dec 9 - Wed, Feb 10
ROB
Monrovia
IAD
Washington
$1,209 Roundtrip, found 3 days ago
$1,209
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Wed, Dec 9 from Monrovia to Washington, returning Wed, Feb 10, priced at $1,209 found 3 days ago
Brussels Airlines
Wed, Dec 9 - Wed, Feb 10
ROB
Monrovia
IAD
Washington
$1,216 Roundtrip, found 3 days ago
$1,216
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Wed, Dec 9 from Monrovia to Washington, returning Wed, Feb 10, priced at $1,216 found 3 days ago
Brussels Airlines
Tue, Sep 29 - Tue, Oct 6
ROB
Monrovia
IAD
Washington
$1,228 Roundtrip, found 4 days ago
$1,228
Roundtrip
found 4 days ago
Select Brussels Airlines flight, departing Tue, Sep 29 from Monrovia to Washington, returning Tue, Oct 6, priced at $1,228 found 4 days ago
Brussels Airlines
Wed, Dec 9 - Wed, Feb 10
ROB
Monrovia
IAD
Washington
$1,233 Roundtrip, found 3 days ago
$1,233
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Wed, Dec 9 from Monrovia to Washington, returning Wed, Feb 10, priced at $1,233 found 3 days ago
Brussels Airlines
Wed, Dec 9 - Wed, Feb 10
ROB
Monrovia
IAD
Washington
$1,276 Roundtrip, found 3 days ago
$1,276
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Wed, Dec 9 from Monrovia to Washington, returning Wed, Feb 10, priced at $1,276 found 3 days ago
Brussels Airlines
Wed, Dec 9 - Wed, Feb 10
ROB
Monrovia
IAD
Washington
$1,282 Roundtrip, found 3 days ago
$1,282
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Wed, Dec 9 from Monrovia to Washington, returning Wed, Feb 10, priced at $1,282 found 3 days ago
United
Sun, Sep 20 - Mon, Sep 28
ROB
Monrovia
IAD
Washington
$1,290 Roundtrip, found 1 day ago
$1,290
Roundtrip
found 1 day ago
Select United flight, departing Sun, Sep 20 from Monrovia to Washington, returning Mon, Sep 28, priced at $1,290 found 1 day ago
Royal Air Maroc
Wed, Dec 9 - Wed, Feb 10
ROB
Monrovia
IAD
Washington
$1,347 Roundtrip, found 3 days ago
$1,347
Roundtrip
found 3 days ago
Select Royal Air Maroc flight, departing Wed, Dec 9 from Monrovia to Washington, returning Wed, Feb 10, priced at $1,347 found 3 days ago
Ethiopian Airlines
Wed, Oct 14 - Sat, Nov 14
ROB
Monrovia
IAD
Washington
$1,553 Roundtrip, found 4 days ago
$1,553
Roundtrip
found 4 days ago
Select Ethiopian Airlines flight, departing Wed, Oct 14 from Monrovia to Washington, returning Sat, Nov 14, priced at $1,553 found 4 days ago
Turkish Airlines
Wed, Dec 9 - Wed, Feb 10
ROB
Monrovia
IAD
Washington
$2,203 Roundtrip, found 3 days ago
$2,203
Roundtrip
found 3 days ago
Select Turkish Airlines flight, departing Wed, Dec 9 from Monrovia to Washington, returning Wed, Feb 10, priced at $2,203 found 3 days ago

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

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

Embark on a journey from Monrovia (ROB) to Washington (IAD) with a range of airlines operating this international long-haul route. Explore various options from full-service carriers to find the flight that aligns with your budget, schedule, and travel plans as you prepare to uncover the iconic sights and neighborhoods of Washington. Here, you'll find essential details for flights departing from Roberts International Airport (ROB) to Washington Dulles International Airport (IAD).

  • Fastest flight duration: around 15 hours in-flight, plus roughly 4h 30m layover with one stop
  • Route distance: roughly 4,700 miles (7,560 km)
  • Flights per week: around 7 departures on average
  • Typical fares (one-way): economy tickets often range from $640–$1295, depending on seasonality and how far ahead you book

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

Based on the latest traveler bookings, here are the top airlines frequently chosen for one-stop flights from Monrovia to Washington. Popular layover options include Mohammed V Airport, CMN (with approximately a 5h 45m layover), Gnassingbe Eyadema International Airport, LFW (around 1h 30m layover), and Brussels National Airport, BRU (about a 5h 30m layover). These choices offer you the flexibility to balance price, total travel time, and cabin class to create the ideal itinerary.

  • Ethiopian Airlines: This full-service airline provides one-stop connections, with one-way ticket prices generally falling between $640 and $1770. It operates roughly 35% of flights on this route, featuring an in-flight duration of 15 hours and an overall travel time of about 18 hours, including layovers.
  • Royal Air Maroc: As a full-service provider, Royal Air Maroc offers one-stop itineraries, with one-way fares usually ranging from $825 to $1295. It accounts for around 30% of departures on this route, with a flight time of 15 hours and a total journey time of approximately 18 hours, factoring in layovers.
  • United: United Airlines operates as a full-service carrier with one-stop options, with one-way fares typically between $700 and $2145. They represent about 16% of the departures on this route, featuring a flight duration of 15 hours, leading to a total travel time of roughly 18 hours, including layover times.
  • Brussels Airlines: This full-service airline provides one-stop services, with one-way fares usually ranging from $985 to $2335. Brussels Airlines accounts for about 12% of departures on this route, with an in-flight time of 15 hours and a total travel duration of around 18 hours, including layover periods.

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

  • Monrovia to Washington (ROB-DCA): Ronald Reagan Washington National Airport (DCA) is located approximately 23 miles from Washington Dulles International Airport (IAD).

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

Getting some of the best deals on flights from Monrovia to Washington 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 found when booking within two weeks, which is also when most travelers make their reservations. Morning departures between 5 a.m. and noon tend to be less expensive and are the most popular flight times. Additionally, flying on Wednesday offers both lower prices and is the most favored 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.*
  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 Washington Dulles International Airport from Roberts International Airport

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

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Washington, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Washington Dulles International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Washington Dulles 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.
  • Public transportation: From Washington Dulles International Airport, the Washington Dulles International Airport Metrorail Station, a metro station, is conveniently located just 0.2 miles away on foot, providing easy access to public transport.

Frequently asked questions

How much does a flight from Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.) cost?
You can find cheap one-way flights from $925 and cheap return flights from $1,209 Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.) with Expedia. Return flights often range between $1620 and $5505. 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 Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles 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 Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
The cheapest month to fly from ROB to IAD is December 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 Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
Enter ROB to IAD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
Air Canada is one of the cheapest airlines offering connecting flights from Monrovia (ROB) to Washington, DC (IAD), with round-trip tickets starting from around $2,287. 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 Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
To find a cheap flight from Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles 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 Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles 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 Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
The earliest flight from Roberts International Airport (ROB) in Monrovia to Washington Dulles International Airport (IAD) departs at approximately 3:05 AM local time, operated by Royal Air Maroc. This seasonal service is available in February, giving you a head start on your travel day. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
You'll usually find the most flights from Roberts Intl. (ROB) to Washington Dulles Intl. (IAD) on a Friday, with around 6 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Royal Air Maroc, Brussels Airlines, and United.
What are the most popular departure times for flights from Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
The most popular departure times for flights from Monrovia (ROB) to Washington, DC (IAD) are in the early morning, from 3am to 6am. About 53% of passengers prefer this time window. Major carriers, including Africa World Airlines, offer flights during this window. This timing is favored because it allows travelers to arrive in Washington, DC, with a full day ahead of them.
How long does it take to fly from Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
A flight from ROB to IAD with a layover takes around 20 hours 50 minutes, with the route 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 Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
Business class seats are offered on the ROB to IAD route. Airlines that offer business class service on this route include:

  • Brussels Airlines
  • Kenya Airways
  • Swiss International Air Lines

How do I earn miles on a Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight with Expedia?
It's easy to earn miles on a Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles 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 Washington from Roberts Intl. (ROB)?
From Roberts Intl. (ROB), you can fly into Washington Dulles Intl. (IAD) to reach Washington. Some flights may connect through major hubs like Conakry Intl. (CKY), Kotoka Intl. (ACC), Felix Houphouet-Boigny Intl. (ABJ) before reaching Washington. 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 Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.) at the last minute?
Typically, booking a last minute flight from Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles 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 Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package?
Securing a Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.) Fairfax County Vacation Packages 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 Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
If you booked your Monrovia (ROB-Roberts Intl.) to Washington, DC (IAD-Washington Dulles 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
Roberts Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Brussels Airlines, Royal Air Maroc, Turkish Airlines, United
Roundtrip price
$1,209
Distance
4721 mi

Book with confidence

Monrovia to Washington Flights

The cheapest times to fly from Monrovia to Washington

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 Monrovia to Washington are during the month of December. You can find some of the cheapest flights from Monrovia to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Monrovia to Washington

Sunday is one of the best days to book for cheap flights from Monrovia to Washington: 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 Monrovia to Washington

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 Monrovia to Washington in 2026. You can also book with separate airlines for your outbound and return journeys, from $925 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 Monrovia to Washington 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 Monrovia to Washington 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.

 

Monrovia to Washington Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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