$3,910 Cheap Flights from Bismarck (BIS) to Monrovia (ROB)

View $3,910 flight on Tue, Nov 11, 2025Opens in a new window

Popular airlines from Bismarck, ND (BIS-Bismarck Municipal) to Monrovia (ROB-Roberts Intl.)

Cheap Flights from Bismarck to Monrovia (BIS-ROB)

Prices were available within the past 7 days and start at $3,910 for one-way flights and $1,514 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Nov 11 - Tue, Nov 18
BIS
Bismarck
ROB
Monrovia
$1,514 Roundtrip, found 20 hours ago
$1,514
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Nov 11 from Bismarck to Monrovia, returning Tue, Nov 18, priced at $1,514 found 20 hours ago
United
Tue, Nov 11 - Tue, Nov 18
BIS
Bismarck
ROB
Monrovia
$1,539 Roundtrip, found 20 hours ago
$1,539
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Nov 11 from Bismarck to Monrovia, returning Tue, Nov 18, priced at $1,539 found 20 hours ago
United
Tue, Nov 11 - Tue, Nov 18
BIS
Bismarck
ROB
Monrovia
$1,564 Roundtrip, found 20 hours ago
$1,564
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Nov 11 from Bismarck to Monrovia, returning Tue, Nov 18, priced at $1,564 found 20 hours ago
United
Tue, Nov 11 - Tue, Nov 18
BIS
Bismarck
ROB
Monrovia
$1,614 Roundtrip, found 20 hours ago
$1,614
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Nov 11 from Bismarck to Monrovia, returning Tue, Nov 18, priced at $1,614 found 20 hours ago
United
Tue, Nov 11 - Tue, Nov 18
BIS
Bismarck
ROB
Monrovia
$2,210 Roundtrip, found 20 hours ago
$2,210
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Nov 11 from Bismarck to Monrovia, returning Tue, Nov 18, priced at $2,210 found 20 hours ago
American Airlines
Tue, Nov 11 - Tue, Nov 18
BIS
Bismarck
ROB
Monrovia
$8,558 Roundtrip, found 20 hours ago
$8,558
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Tue, Nov 11 from Bismarck to Monrovia, returning Tue, Nov 18, priced at $8,558 found 20 hours ago
United
Tue, Nov 11 - Tue, Nov 18
BIS
Bismarck
ROB
Monrovia
$9,626 Roundtrip, found 20 hours ago
$9,626
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Nov 11 from Bismarck to Monrovia, returning Tue, Nov 18, priced at $9,626 found 20 hours ago
United
Tue, Nov 11 - Tue, Nov 18
BIS
Bismarck
ROB
Monrovia
$9,632 Roundtrip, found 20 hours ago
$9,632
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Nov 11 from Bismarck to Monrovia, returning Tue, Nov 18, priced at $9,632 found 20 hours ago

Frequently asked questions

How much does a flight from Bismarck Municipal Airport (BIS) to Roberts Intl. Airport (ROB) cost?
Grab a cheap one-way flight from $3,910 or cheap return flight from $1,514 from Bismarck Municipal Airport (BIS) to Roberts Intl. Airport (ROB) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Bismarck Municipal Airport (BIS) to Roberts Intl. Airport (ROB)?
The cheapest month to fly from BIS to ROB is November, when there's less demand. Off-peak months are usually when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Bismarck Municipal Airport (BIS) to Roberts Intl. Airport (ROB)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from BIS to ROB. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Bismarck Municipal Airport (BIS) to Roberts Intl. Airport (ROB)?
Nonstop flights from Bismarck Municipal Airport (BIS) to Roberts Intl. Airport (ROB) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BIS to ROB?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Bismarck Municipal Airport (BIS) to Roberts Intl. Airport (ROB)?
Choose a flight from Bismarck Municipal Airport (BIS) to Roberts Intl. Airport (ROB) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour have a 22% higher chance of being canceled, on average.**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 Bismarck Municipal Airport (BIS) to Roberts Intl. Airport (ROB) last-minute?
Last-minute fares from BIS to ROB are usually more expensive. To lock in the best prices, start looking for flights early. That being said, if your travel plans are flexible, you may score a cheap fare just before your departure.
Is it cheaper to book a BIS to ROB flight and hotel package?
You'll generally save money by booking a BIS 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 simple to manage everything in one convenient place. Once you've selected your ideal flights and accommodations, consider adding extras including tours, activities and car rentals.
Can I cancel or change the date of my flight from Bismarck Municipal Airport (BIS) to Roberts Intl. Airport (ROB)?
In most instances, you're able to cancel or reschedule your BIS to ROB flight. However, additional fees may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you want further details, head to our Customer Service portal.

Travel information

Origin airport
Bismarck Municipal
Destination airport
Roberts Intl.
Roundtrip price
$1,513
Distance
5923 mi

Book with confidence

Bismarck to Monrovia Flights

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

 

The best time to book a flight from Bismarck to Monrovia

Sunday is one of the best days to book for cheap flights from Bismarck 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 Bismarck 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 Bismarck to Monrovia in 2025. You can also book with separate airlines for your outbound and return journeys, from $3,910 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 Bismarck 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 Bismarck 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.

 

Bismarck to Monrovia Flights
*Available to One Key members.