$880 Cheap Flights from Monrovia (ROB) to Washington (IAD)

View $880 flight on Sun, Mar 1, 2026Opens in a new window

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

Cheap Flights from Monrovia to Washington (ROB-IAD)

Prices were available within the past 7 days and start at $880 for one-way flights and $1,224 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Brussels Airlines
Tue, Nov 11 - Thu, Nov 27
ROB
Monrovia
IAD
Washington
$1,224 Roundtrip, found 5 days ago
$1,224
Roundtrip
found 5 days ago
Select Brussels Airlines flight, departing Tue, Nov 11 from Monrovia to Washington, returning Thu, Nov 27, priced at $1,224 found 5 days ago
United
Sun, Nov 23 - Mon, Dec 8
ROB
Monrovia
IAD
Washington
$1,237 Roundtrip, found 1 day ago
$1,237
Roundtrip
found 1 day ago
Select United flight, departing Sun, Nov 23 from Monrovia to Washington, returning Mon, Dec 8, priced at $1,237 found 1 day ago
United
Fri, Nov 14 - Thu, Dec 4
ROB
Monrovia
IAD
Washington
$1,239 Roundtrip, found 5 days ago
$1,239
Roundtrip
found 5 days ago
Select United flight, departing Fri, Nov 14 from Monrovia to Washington, returning Thu, Dec 4, priced at $1,239 found 5 days ago
United
Tue, Nov 11 - Thu, Dec 4
ROB
Monrovia
IAD
Washington
$1,249 Roundtrip, found 5 days ago
$1,249
Roundtrip
found 5 days ago
Select United flight, departing Tue, Nov 11 from Monrovia to Washington, returning Thu, Dec 4, priced at $1,249 found 5 days ago
Royal Air Maroc
Fri, Nov 14 - Fri, Nov 28
ROB
Monrovia
IAD
Washington
$1,272 Roundtrip, found 5 days ago
$1,272
Roundtrip
found 5 days ago
Select Royal Air Maroc flight, departing Fri, Nov 14 from Monrovia to Washington, returning Fri, Nov 28, priced at $1,272 found 5 days ago
Brussels Airlines
Wed, Nov 12 - Thu, Nov 27
ROB
Monrovia
IAD
Washington
$1,284 Roundtrip, found 5 days ago
$1,284
Roundtrip
found 5 days ago
Select Brussels Airlines flight, departing Wed, Nov 12 from Monrovia to Washington, returning Thu, Nov 27, priced at $1,284 found 5 days ago
Brussels Airlines
Fri, Dec 12 - Wed, Jan 7
ROB
Monrovia
IAD
Washington
$1,287 Roundtrip, found 5 days ago
$1,287
Roundtrip
found 5 days ago
Select Brussels Airlines flight, departing Fri, Dec 12 from Monrovia to Washington, returning Wed, Jan 7, priced at $1,287 found 5 days ago
American Airlines
Sun, Jan 11 - Wed, Jan 14
ROB
Monrovia
IAD
Washington
$1,292 Roundtrip, found 2 days ago
$1,292
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Jan 11 from Monrovia to Washington, returning Wed, Jan 14, priced at $1,292 found 2 days ago
Brussels Airlines
Fri, Dec 12 - Wed, Jan 7
ROB
Monrovia
IAD
Washington
$1,294 Roundtrip, found 5 days ago
$1,294
Roundtrip
found 5 days ago
Select Brussels Airlines flight, departing Fri, Dec 12 from Monrovia to Washington, returning Wed, Jan 7, priced at $1,294 found 5 days ago
Ethiopian Airlines
Tue, Nov 11 - Sun, Nov 30
ROB
Monrovia
IAD
Washington
$1,505 Roundtrip, found 4 days ago
$1,505
Roundtrip
found 4 days ago
Select Ethiopian Airlines flight, departing Tue, Nov 11 from Monrovia to Washington, returning Sun, Nov 30, priced at $1,505 found 4 days ago

Alternative airports near Washington

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

Select flight to Washington Dulles Intl. IAD. Cheapest option available. Average driving time to city center is 36 minutes. Flights from $1,237
IAD
Washington Dulles Intl.
Cheapest
Average driving time to city center36 min
Flights from $1,237

Frequently asked questions

How much does a flight from Roberts Intl. Airport (ROB) to Washington Dulles Intl. Airport (IAD) cost?
Secure a cheap one-way flight from $880 or cheap return flight from $1,224 from Roberts Intl. Airport (ROB) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Roberts Intl. Airport (ROB) to Washington Dulles Intl. Airport (IAD)?
November is the cheapest month to fly from ROB to IAD. Avoiding peak travel times is often the key to scoring lower fares.
What is the cheapest airline that flies from Roberts Intl. Airport (ROB) to Washington Dulles Intl. Airport (IAD)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest ROB to IAD flight.
How many flights per day from Roberts Intl. Airport (ROB) to Washington Dulles Intl. Airport (IAD)?
You'll have to hop on a flight with a layover if you're traveling from Roberts Intl. Airport (ROB) to Washington Dulles Intl. Airport (IAD). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from ROB to IAD?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change based on a number of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Roberts Intl. Airport (ROB) to Washington Dulles Intl. Airport (IAD)?
To avoid possible delays on the Roberts Intl. Airport (ROB) to Washington Dulles Intl. Airport (IAD) route, fly before 3 PM. Departures after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Roberts Intl. Airport (ROB) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your plane ticket from ROB to IAD shortly before your journey is typically more expensive. But if you're flexible with your schedule, you could grab a cheap last-minute fare.
Is it cheaper to book a ROB to IAD flight and hotel package?
Compared with arranging hotels and flights separately, booking a ROB to IAD flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place will take the hassle out of travel planning. Simply secure your flights and choose from our wide range of hotels, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Roberts Intl. Airport (ROB) to Washington Dulles Intl. Airport (IAD)?
In most cases, you can cancel or modify your ROB to IAD flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you need further information, head to our Customer Service portal.

Travel information

Origin airport
Roberts Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Brussels Airlines, Delta, Ethiopian Airlines, Royal Air Maroc, United
Roundtrip price
$1,223
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 November. 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 2025. You can also book with separate airlines for your outbound and return journeys, from $880 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

Explore a world of travel with Expedia

*Available to One Key members.