$860 Cheap Flights from Seattle (SEA) to Monrovia (ROB)

View $860 flight on Fri, Dec 5, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Monrovia (ROB-Roberts Intl.)

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Cheap Flights from Seattle to Monrovia (SEA-ROB)

Prices were available within the past 7 days and start at $860 for one-way flights and $1,258 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Mar 30 - Tue, Apr 14
SEA
Seattle
ROB
Monrovia
$1,258 Roundtrip, found 7 hours ago
$1,258
Roundtrip
found 7 hours ago
Select United flight, departing Mon, Mar 30 from Seattle to Monrovia, returning Tue, Apr 14, priced at $1,258 found 7 hours ago
United
Sun, Mar 29 - Tue, Apr 14
SEA
Seattle
ROB
Monrovia
$1,266 Roundtrip, found 7 hours ago
$1,266
Roundtrip
found 7 hours ago
Select United flight, departing Sun, Mar 29 from Seattle to Monrovia, returning Tue, Apr 14, priced at $1,266 found 7 hours ago
United
Mon, Mar 16 - Tue, Mar 31
SEA
Seattle
ROB
Monrovia
$1,267 Roundtrip, found 1 day ago
$1,267
Roundtrip
found 1 day ago
Select United flight, departing Mon, Mar 16 from Seattle to Monrovia, returning Tue, Mar 31, priced at $1,267 found 1 day ago
United
Mon, Mar 30 - Fri, Apr 17
SEA
Seattle
ROB
Monrovia
$1,304 Roundtrip, found 7 hours ago
$1,304
Roundtrip
found 7 hours ago
Select United flight, departing Mon, Mar 30 from Seattle to Monrovia, returning Fri, Apr 17, priced at $1,304 found 7 hours ago
United
Thu, Apr 2 - Tue, Apr 14
SEA
Seattle
ROB
Monrovia
$1,308 Roundtrip, found 7 hours ago
$1,308
Roundtrip
found 7 hours ago
Select United flight, departing Thu, Apr 2 from Seattle to Monrovia, returning Tue, Apr 14, priced at $1,308 found 7 hours ago
United
Fri, Feb 6 - Tue, Feb 17
SEA
Seattle
ROB
Monrovia
$1,316 Roundtrip, found 7 hours ago
$1,316
Roundtrip
found 7 hours ago
Select United flight, departing Fri, Feb 6 from Seattle to Monrovia, returning Tue, Feb 17, priced at $1,316 found 7 hours ago
Ethiopian Airlines
Thu, Apr 9 - Thu, Apr 23
SEA
Seattle
ROB
Monrovia
$1,445 Roundtrip, found 1 day ago
$1,445
Roundtrip
found 1 day ago
Select Ethiopian Airlines flight, departing Thu, Apr 9 from Seattle to Monrovia, returning Thu, Apr 23, priced at $1,445 found 1 day ago
Brussels Airlines
Mon, Mar 30 - Wed, Apr 29
SEA
Seattle
ROB
Monrovia
$1,534 Roundtrip, found 3 days ago
$1,534
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Mon, Mar 30 from Seattle to Monrovia, returning Wed, Apr 29, priced at $1,534 found 3 days ago
British Airways
Wed, Mar 4 - Fri, Mar 20
SEA
Seattle
ROB
Monrovia
$1,968 Roundtrip, found 1 day ago
$1,968
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, Mar 4 from Seattle to Monrovia, returning Fri, Mar 20, priced at $1,968 found 1 day ago
American Airlines
Tue, Mar 31 - Wed, Apr 29
SEA
Seattle
ROB
Monrovia
$2,204 Roundtrip, found 1 day ago
$2,204
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Mar 31 from Seattle to Monrovia, returning Wed, Apr 29, priced at $2,204 found 1 day 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 $1,258
ROB
Roberts Intl.
Cheapest
Average driving time to city center49 min
Flights from $1,258

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Roberts Intl. Airport (ROB) cost?
Grab a cheap one-way flight from $860 or cheap return flight from $1,258 from Seattle - Tacoma Intl. Airport (SEA) to Roberts Intl. Airport (ROB) 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 Seattle - Tacoma Intl. Airport (SEA) to Roberts Intl. Airport (ROB)?
Planning your trip for March is a great way to save, as it's the cheapest month for flights between SEA and ROB. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Roberts Intl. Airport (ROB)?
To find the cheapest airline that'll fly you from SEA to ROB, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Roberts Intl. Airport (ROB)?
You'll have to hop on a flight with a layover when traveling from Seattle - Tacoma Intl. Airport (SEA) to Roberts Intl. Airport (ROB). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from SEA to ROB?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be 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 Seattle - Tacoma Intl. Airport (SEA) to Roberts Intl. Airport (ROB)?
To avoid possible delays on the Seattle - Tacoma Intl. Airport (SEA) to Roberts Intl. Airport (ROB) route, aim to fly before 3 PM. Departures after this time 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 Seattle - Tacoma Intl. Airport (SEA) to Roberts Intl. Airport (ROB) last-minute?
Booking your plane ticket from SEA to ROB shortly before your journey is generally more expensive. However, if there's some wiggle room with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a SEA to ROB flight and hotel package?
You'll generally save money by booking a SEA to ROB flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've chosen your preferred flights and accommodations, you can add extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Roberts Intl. Airport (ROB)?
If you reserved your SEA to ROB flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. 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.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Roberts Intl.
Airlines serving
British Airways, Brussels Airlines, Delta, Ethiopian Airlines, United
Roundtrip price
$1,258
Distance
6899 mi

Book with confidence

Seattle to Monrovia Flights

The cheapest times to fly from Seattle 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 Seattle to Monrovia are during the month of March. You can find some of the cheapest flights from Seattle to Monrovia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Monrovia

Sunday is one of the best days to book for cheap flights from Seattle 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 Seattle 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 Seattle to Monrovia in 2025. You can also book with separate airlines for your outbound and return journeys, from $860 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 Seattle 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 Seattle 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.

 

Seattle to Monrovia Flights
*Available to One Key members.