$766 Cheap Flights from Washington (IAD) to Monrovia (ROB)

View $766 flight on Tue, Mar 3, 2026Opens in a new window

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

Cheap Flights from Washington to Monrovia (IAD-ROB)

Prices were available within the past 7 days and start at $766 for one-way flights and $1,091 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Ethiopian Airlines
Sun, Nov 30 - Tue, Dec 9
IAD
Washington
ROB
Monrovia
$1,091 Roundtrip, found 5 hours ago
$1,091
Roundtrip
found 5 hours ago
Select Ethiopian Airlines flight, departing Sun, Nov 30 from Washington to Monrovia, returning Tue, Dec 9, priced at $1,091 found 5 hours ago
Brussels Airlines
Tue, Mar 3 - Tue, Mar 17
IAD
Washington
ROB
Monrovia
$1,094 Roundtrip, found 2 hours ago
$1,094
Roundtrip
found 2 hours ago
Select Brussels Airlines flight, departing Tue, Mar 3 from Washington to Monrovia, returning Tue, Mar 17, priced at $1,094 found 2 hours ago
United
Tue, Mar 3 - Tue, Mar 17
IAD
Washington
ROB
Monrovia
$1,094 Roundtrip, found 2 hours ago
$1,094
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Mar 3 from Washington to Monrovia, returning Tue, Mar 17, priced at $1,094 found 2 hours ago
United
Tue, Feb 3 - Tue, Feb 10
IAD
Washington
ROB
Monrovia
$1,099 Roundtrip, found 16 hours ago
$1,099
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Feb 3 from Washington to Monrovia, returning Tue, Feb 10, priced at $1,099 found 16 hours ago
United
Tue, Mar 3 - Tue, Mar 17
IAD
Washington
ROB
Monrovia
$1,105 Roundtrip, found 2 hours ago
$1,105
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Mar 3 from Washington to Monrovia, returning Tue, Mar 17, priced at $1,105 found 2 hours ago
United
Tue, Feb 3 - Tue, Feb 10
IAD
Washington
ROB
Monrovia
$1,109 Roundtrip, found 16 hours ago
$1,109
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Feb 3 from Washington to Monrovia, returning Tue, Feb 10, priced at $1,109 found 16 hours ago
United
Tue, Feb 3 - Tue, Feb 10
IAD
Washington
ROB
Monrovia
$1,110 Roundtrip, found 16 hours ago
$1,110
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Feb 3 from Washington to Monrovia, returning Tue, Feb 10, priced at $1,110 found 16 hours ago
United
Tue, Mar 3 - Tue, Mar 17
IAD
Washington
ROB
Monrovia
$1,113 Roundtrip, found 2 hours ago
$1,113
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Mar 3 from Washington to Monrovia, returning Tue, Mar 17, priced at $1,113 found 2 hours ago
Swiss International Air Lines
Wed, Nov 12 - Wed, Nov 19
IAD
Washington
ROB
Monrovia
$1,128 Roundtrip, found 5 days ago
$1,128
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Wed, Nov 12 from Washington to Monrovia, returning Wed, Nov 19, priced at $1,128 found 5 days ago
Air Canada
Tue, Nov 18 - Fri, Dec 5
IAD
Washington
ROB
Monrovia
$1,144 Roundtrip, found 5 days ago
$1,144
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Nov 18 from Washington to Monrovia, returning Fri, Dec 5, priced at $1,144 found 5 days 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 $1,114
ROB
Roberts Intl.
Cheapest
Average driving time to city center49 min
Flights from $1,114
Flights from Washington (IAD) to Monrovia (ROB)
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, United
Roundtrip price
$1,091
Distance
4721 mi

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 2025. You can also book with separate airlines for your outbound and return journeys, from $766 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.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Roberts Intl. Airport (ROB) cost?
Get a cheap one-way flight from $766 or cheap return flight from $1,091 from Washington Dulles Intl. Airport (IAD) to Roberts Intl. Airport (ROB) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Roberts Intl. Airport (ROB)?
Planning your trip for November is a good way to save, as it's the cheapest month for flights between IAD and ROB. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Roberts Intl. Airport (ROB)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IAD to ROB. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Roberts Intl. Airport (ROB)?
You'll have to catch a flight with a layover when traveling from Washington Dulles Intl. Airport (IAD) to Roberts Intl. Airport (ROB). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from IAD to ROB?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Roberts Intl. Airport (ROB)?
To avoid potential delays on the Washington Dulles Intl. Airport (IAD) to Roberts Intl. Airport (ROB) route, aim to fly before 3 PM. Later departures have a 22% higher chance of cancellation.**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 Washington Dulles Intl. Airport (IAD) to Roberts Intl. Airport (ROB) last-minute?
Last-minute fares from IAD to ROB are typically more expensive. To secure the best rates, start searching for flights well ahead of time. That said, if you're flexible with your travel plans, it's possible to land a cheap ticket just before your departure.
Is it cheaper to book an IAD to ROB flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAD to ROB flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place takes the hassle out of planning your trip. Just secure your flights and select from our extensive range of hotels, then tailor your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Roberts Intl. Airport (ROB)?
If you booked your IAD to ROB flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

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*Available to One Key members.