$786 Cheap Flights from Washington (IAD) to Monrovia (ROB)

View $786 flight on Tue, Nov 10, 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 $786 for one-way flights and $1,048 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Royal Air Maroc
Mon, Apr 13 - Sun, Apr 26
IAD
Washington
ROB
Monrovia
$1,048 Roundtrip, found 1 day ago
$1,048
Roundtrip
found 1 day ago
Select Royal Air Maroc flight, departing Mon, Apr 13 from Washington to Monrovia, returning Sun, Apr 26, priced at $1,048 found 1 day ago
Royal Air Maroc
Fri, Apr 24 - Fri, May 8
IAD
Washington
ROB
Monrovia
$1,086 Roundtrip, found 19 hours ago
$1,086
Roundtrip
found 19 hours ago
Select Royal Air Maroc flight, departing Fri, Apr 24 from Washington to Monrovia, returning Fri, May 8, priced at $1,086 found 19 hours ago
Royal Air Maroc
Wed, Apr 8 - Wed, Apr 22
IAD
Washington
ROB
Monrovia
$1,168 Roundtrip, found 3 hours ago
$1,168
Roundtrip
found 3 hours ago
Select Royal Air Maroc flight, departing Wed, Apr 8 from Washington to Monrovia, returning Wed, Apr 22, priced at $1,168 found 3 hours ago
Royal Air Maroc
Mon, Apr 13 - Sun, Apr 26
IAD
Washington
ROB
Monrovia
$1,187 Roundtrip, found 1 day ago
$1,187
Roundtrip
found 1 day ago
Select Royal Air Maroc flight, departing Mon, Apr 13 from Washington to Monrovia, returning Sun, Apr 26, priced at $1,187 found 1 day ago
Ethiopian Airlines
Sun, Apr 19 - Tue, May 19
IAD
Washington
ROB
Monrovia
$1,192 Roundtrip, found 4 hours ago
$1,192
Roundtrip
found 4 hours ago
Select Ethiopian Airlines flight, departing Sun, Apr 19 from Washington to Monrovia, returning Tue, May 19, priced at $1,192 found 4 hours ago
Royal Air Maroc
Fri, May 8 - Sun, May 24
IAD
Washington
ROB
Monrovia
$1,205 Roundtrip, found 11 hours ago
$1,205
Roundtrip
found 11 hours ago
Select Royal Air Maroc flight, departing Fri, May 8 from Washington to Monrovia, returning Sun, May 24, priced at $1,205 found 11 hours ago
United
Tue, Nov 17 - Tue, Dec 8
IAD
Washington
ROB
Monrovia
$1,215 Roundtrip, found 2 days ago
$1,215
Roundtrip
found 2 days ago
Select United flight, departing Tue, Nov 17 from Washington to Monrovia, returning Tue, Dec 8, priced at $1,215 found 2 days ago
Air Canada
Tue, Nov 17 - Tue, Dec 8
IAD
Washington
ROB
Monrovia
$1,218 Roundtrip, found 2 days ago
$1,218
Roundtrip
found 2 days ago
Select Air Canada flight, departing Tue, Nov 17 from Washington to Monrovia, returning Tue, Dec 8, priced at $1,218 found 2 days ago
United
Tue, Nov 17 - Tue, Dec 8
IAD
Washington
ROB
Monrovia
$1,219 Roundtrip, found 2 days ago
$1,219
Roundtrip
found 2 days ago
Select United flight, departing Tue, Nov 17 from Washington to Monrovia, returning Tue, Dec 8, priced at $1,219 found 2 days ago
Brussels Airlines
Mon, Sep 21 - Wed, Sep 30
IAD
Washington
ROB
Monrovia
$1,223 Roundtrip, found 3 days ago
$1,223
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Mon, Sep 21 from Washington to Monrovia, returning Wed, Sep 30, priced at $1,223 found 3 days ago

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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 $1,631
ROB
Roberts Intl.
Cheapest
Average driving time to city center49 min
Flights from $1,631

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 $786 and cheap return flights from $1,048 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 April 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
Air Canada, American Airlines, British Airways, Brussels Airlines, Delta, Ethiopian Airlines, Royal Air Maroc, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$1,048
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 April. 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 $786 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.