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Monrovia

$1,204+ Cheap flights from Boston (BOS) to Monrovia (ROB)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ROB
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Monrovia Roberts Intl are usually found in August or September, booked 41 days in advance, depart on a Tuesday or Friday and return on a Monday

Cheap flight deals from Boston to Monrovia

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Monrovia (ROB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$1,204
(Gurufare)

Popular in

December

Cheapest in

August

Average price

$1,393
From Boston Logan Intl to Monrovia Roberts Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($174 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Boston to Monrovia

Cheapest flights from Boston to Monrovia
Explore the most affordable flight options available from Boston to Monrovia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Gurufare deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/83:40 pmBOS - ROB
3 stops24h 35mMultiple Airlines
Sun 12/710:45 pmROB - BOS
2 stops50h 35mMultiple Airlines
Deal found 9/9$1,204
This Gurufare deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/273:40 pmBOS - ROB
2 stops22h 05mBrussels Airlines
Tue 12/3010:45 pmROB - BOS
2 stops43h 40mBrussels Airlines
Deal found 9/8$1,430
This Gurufare deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/15:20 pmBOS - ROB
3 stops23h 55mBrussels Airlines
Sat 11/1510:45 pmROB - BOS
2 stops21h 07mBrussels Airlines
Deal found 9/9$1,495
This oojo deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/81:49 pmBOS - ROB
3 stops43h 56mEthiopian Air
Sun 12/711:05 amROB - BOS
3 stops41h 36mEthiopian Air
Deal found 9/9$1,549
This KAYAK deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:30 amBOS - ROB
2 stops29h 15mEthiopian Air
Wed 1/77:30 amROB - BOS
3 stops21h 19mEthiopian Air
Deal found 9/10$1,672
This Gurufare deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/205:30 amBOS - ROB
3 stops52h 15mEthiopian Air
Sat 12/277:30 amROB - BOS
3 stops21h 24mEthiopian Air
Deal found 9/9$1,741
This Ovago deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:40 pmBOS - ROB
3 stops43h 35mBrussels Airlines
Tue 1/1310:45 pmROB - BOS
2 stops25h 12mBrussels Airlines
Deal found 9/9$1,789
This oojo deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/275:30 amBOS - ROB
3 stops31h 20mEthiopian Air
Tue 12/3011:05 amROB - BOS
3 stops40h 51mEthiopian Air
Deal found 9/8$1,796
This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/208:00 pmBOS - ROB
2 stops41h 00mMultiple Airlines
Sat 12/277:00 pmROB - BOS
2 stops52h 05mMultiple Airlines
Deal found 9/9$1,814
This oojo deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:45 pmBOS - ROB
3 stops40h 05mMultiple Airlines
Tue 1/137:30 amROB - BOS
2 stops35h 50mMultiple Airlines
Deal found 9/11$1,819

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Monrovia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Boston to Monrovia that are best for you.

Fly from

Boston

Fly to

Monrovia

Route

Depart

Return

Price

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Sat 11/8

3:40 pm-9:15 pm

3 stops24h 35m

Monrovia Roberts Intl

Sun 12/7

10:45 pm-8:20 pm

2 stops50h 35m

$1,204

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Thu 11/27

3:40 pm-6:45 pm

2 stops22h 05m

Monrovia Roberts Intl

Tue 12/30

10:45 pm-1:25 pm

2 stops43h 40m

$1,430

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Thu 2/26

5:25 pm-2:45 pm

3 stops40h 20m

Monrovia Roberts Intl

Thu 3/19

11:05 am-3:36 pm

3 stops32h 31m

$1,498

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Sat 11/8

1:49 pm-2:45 pm

3 stops43h 56m

Monrovia Roberts Intl

Sun 12/7

11:05 am-11:41 pm

3 stops41h 36m

$1,549

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Sat 2/7

5:45 am-2:45 pm

2 stops28h 00m

Monrovia Roberts Intl

Wed 2/11

7:30 am-11:49 pm

3 stops21h 19m

$1,602

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Thu 11/20

5:30 am-2:45 pm

3 stops52h 15m

Monrovia Roberts Intl

Sat 12/27

7:30 am-11:54 pm

3 stops21h 24m

$1,741

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Sat 2/7

8:45 pm-6:00 pm

2 stops40h 15m

Monrovia Roberts Intl

Wed 2/11

7:00 pm-10:33 pm

2 stops32h 33m

$1,775

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Sun 12/28

8:40 pm-9:15 pm

3 stops43h 35m

Monrovia Roberts Intl

Tue 1/13

10:45 pm-6:57 pm

2 stops25h 12m

$1,789

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Thu 11/27

5:30 am-5:50 pm

3 stops31h 20m

Monrovia Roberts Intl

Tue 12/30

11:05 am-10:56 pm

3 stops40h 51m

$1,796

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Best time to book a flight from Boston to Monrovia

Have a flexible travel schedule? Discover the best time to fly to Monrovia from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Monrovia

How far ahead should I book a flight from Boston to Monrovia?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Monrovia. Price data was last updated on August 29, 2025.

The best time to book flights from Boston to Monrovia is 41 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Boston to Monrovia?

Currently, September is the cheapest month in which you can book a flight from Boston to Monrovia (average of $1,197). Flying from Boston to Monrovia in May is currently the most expensive (average of $1,845). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to ROB?

Find hourly flight availability from Boston to Monrovia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 16% on flights from Boston to Monrovia by exploring options for tickets at noon.

Reviews of airlines servicing Monrovia

Get insights into the airlines that provide service to Monrovia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Monrovia. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with United Airlines, Brussels Airlines, and Ethiopian Air from Boston to Monrovia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Brussels Airlines
7.3
Good
359 reviews
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Ethiopian Air
7.2
Good
861 reviews
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Kenya Airways
6.9
Okay
281 reviews
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.7
Okay
7,361 reviews
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Boston to Monrovia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boston to Monrovia?

    Brussels Airlines and Ethiopian Air can get you from Boston to Monrovia in just under 22h 05m. Your travel time can differ by up to 18h 15m. There are 4442 mi between Boston and Monrovia. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Boston to Monrovia round-trip?

    According to our current data, Brussels Airlines ($962), United Airlines ($1,035), and Ethiopian Air ($1,285) offers the cheapest pricing from Boston to Monrovia. Brussels Airlines is 39% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Boston to Monrovia that include hotel bookings?

    Yes. In addition to deals on Boston to Monrovia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Monrovia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Monrovia.

  • Can I find deals for business class flights from Boston to Monrovia?

    Yes. Cheapflights offers flight deals from Boston to Monrovia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Monrovia?

    Currently, September is the cheapest month in which you can book a flight from Boston to Monrovia (average of $1,197). Flying from Boston to Monrovia in May is currently the most expensive (average of $1,845). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Search flights from Boston to Monrovia by cabin class

Find flights from Boston to Monrovia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Top 5 airlines flying from Boston to Monrovia

Discover the top 5 airlines that operate flights from Boston to Monrovia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Brussels AirlinesCheapest$962Average$1,635FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$1,035Average$1,634FlexibilityNo cancel feeOn-time69%
Ethiopian AirCheapest$1,285Average$1,614FlexibilityNo cancel feeOn-time72%
Kenya AirwaysCheapest$1,355Average$1,508FlexibilityNo cancel feeOn-time82%
British AirwaysCheapest$1,747Average$2,058FlexibilityNo cancel feeOn-time70%

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