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Monrovia

$1,322+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ROB
Aug 17 — Aug 241
Mon 8/17
Mon 8/24
1 adult, Economy
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Cheap 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 July 18, 2026.

This FlightHub deal was found by Cheapflights users on 7/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:45 am
BOS
-
ROB
2 stops29h 00m
Multiple Airlines
Sun 9/2711:05 am
ROB
-
BOS
3 stops37h 23m
Multiple Airlines
Deal found 7/17$1,322
This oojo deal was found by Cheapflights users on 7/18. 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.
Fri 9/45:45 am
BOS
-
ROB
2 stops29h 00m
Ethiopian Air
Sun 9/277:10 am
ROB
-
BOS
2 stops35h 25m
Ethiopian Air
Deal found 7/18$1,385
This FlightHub deal was found by Cheapflights users on 7/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:45 am
BOS
-
ROB
3 stops32h 20m
Multiple Airlines
Sat 10/317:10 am
ROB
-
BOS
3 stops20h 30m
Multiple Airlines
Deal found 7/16$1,468
This Fareboom deal was found by Cheapflights users on 7/17. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:45 am
BOS
-
ROB
2 stops32h 20m
Multiple Airlines
Wed 9/237:10 am
ROB
-
BOS
2 stops20h 49m
Multiple Airlines
Deal found 7/17$1,469
This oojo deal was found by Cheapflights users on 7/15. 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.
Tue 12/86:00 am
BOS
-
ROB
2 stops27h 45m
Ethiopian Air
Thu 12/317:30 am
ROB
-
BOS
3 stops20h 48m
Ethiopian Air
Deal found 7/15$1,503
This FlightHub deal was found by Cheapflights users on 7/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:45 am
BOS
-
ROB
3 stops32h 20m
Multiple Airlines
Thu 9/2411:05 am
ROB
-
BOS
3 stops33h 06m
Multiple Airlines
Deal found 7/17$1,516
This Justfly.com deal was found by Cheapflights users on 7/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/275:45 am
BOS
-
ROB
2 stops28h 00m
Multiple Airlines
Sun 12/611:05 am
ROB
-
BOS
3 stops30h 40m
Multiple Airlines
Deal found 7/15$1,530
This Justfly.com deal was found by Cheapflights users on 7/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/136:50 pm
BOS
-
ROB
3 stops45h 00m
Multiple Airlines
Fri 9/259:10 pm
ROB
-
BOS
2 stops21h 31m
Multiple Airlines
Deal found 7/17$1,551

Find 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 July 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,322
(FlightHub)

Popular in

December

Cheapest in

August

Average price

$1,684
Provider with most accurate pricing for Boston Logan Intl-Monrovia Roberts Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Monrovia Roberts Intl flights.
Search Deals
From Boston Logan Intl to Monrovia Roberts Intl
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($59 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 18, 2026.
Use the filters below to find and compare flights from Boston to Monrovia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Mon 8/31

5:45 am-6:05 pm

2 stops32h 20m

Monrovia Roberts Intl

Sat 10/31

7:10 am-11:40 pm

2 stops20h 30m

$1,471

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Tue 12/8

6:00 am-2:45 pm

2 stops27h 45m

Monrovia Roberts Intl

Thu 12/31

7:30 am-11:18 pm

3 stops20h 48m

$1,503

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Fri 11/27

5:45 am-2:45 pm

2 stops28h 00m

Monrovia Roberts Intl

Sun 12/6

11:05 am-12:45 pm

3 stops30h 40m

$1,530

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Sun 12/6

4:25 pm-9:15 pm

3 stops47h 50m

Monrovia Roberts Intl

Wed 12/30

10:45 pm-4:25 pm

2 stops22h 40m

$1,636
Quickest round-trip

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Sun 12/6

5:45 am-2:45 pm

2 stops28h 00m

Monrovia Roberts Intl

Wed 12/30

8:15 am-11:47 pm

3 stops20h 32m

$1,675

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Sun 12/6

7:50 pm-7:30 pm

2 stops42h 40m

Monrovia Roberts Intl

Wed 12/30

8:15 am-11:47 pm

2 stops20h 32m

$1,697

BostonMonrovia

BOS - ROB

BOSROB

Boston Logan Intl

Tue 8/4

9:32 am-5:50 pm

3 stops28h 18m

Monrovia Roberts Intl

Fri 8/7

7:30 am-11:16 am

3 stops31h 46m

$1,723

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Sorted by cheapest first

Compare providers for flights from Boston to Monrovia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Monrovia in July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
BusinessClassPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Monrovia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Monrovia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Monrovia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Monrovia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Monrovia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

Currently, August is the cheapest month in which you can book a flight from Boston to Monrovia (average of $1,208). Flying from Boston to Monrovia in December is currently the most expensive (average of $1,899). 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.

How much does it cost to fly round-trip from Boston to Monrovia?

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 July 18, 2026.
Peruse reviews from past customers who have flown with SWISS,United Airlines, andBrussels Airlines 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.
SWISS
7.5
Good
2,010 reviews

Entertainment

6.8

Overall

7.5

Crew

8.3

Boarding

7.7

Comfort

7.4

Food

7.1

Reviews

1 / 20
10.0
Excellent

Thomas,Mar 2026

BOS - ZRH

The business class seats on the new Swiss A350 are hard as a rock. Seems like a bit of a miss on the new "Swiss Senses" experience. Other than that, excellent service.
SWISS
7.5
Good
2,010 reviews
SWISS
7.5
Good
2,010 reviews

Entertainment

6.8

Overall

7.5

Crew

8.3

Boarding

7.7

Comfort

7.4

Food

7.1

Reviews

1 / 20
10.0
Excellent

Thomas,Mar 2026

BOS - ZRH

The business class seats on the new Swiss A350 are hard as a rock. Seems like a bit of a miss on the new "Swiss Senses" experience. Other than that, excellent service.
United Airlines
7.4
Good
10,008 reviews
SWISS
7.5
Good
2,010 reviews

Entertainment

6.8

Overall

7.5

Crew

8.3

Boarding

7.7

Comfort

7.4

Food

7.1

Reviews

1 / 20
10.0
Excellent

Thomas,Mar 2026

BOS - ZRH

The business class seats on the new Swiss A350 are hard as a rock. Seems like a bit of a miss on the new "Swiss Senses" experience. Other than that, excellent service.
Brussels Airlines
7.2
Good
421 reviews
SWISS
7.5
Good
2,010 reviews

Entertainment

6.8

Overall

7.5

Crew

8.3

Boarding

7.7

Comfort

7.4

Food

7.1

Reviews

1 / 20
10.0
Excellent

Thomas,Mar 2026

BOS - ZRH

The business class seats on the new Swiss A350 are hard as a rock. Seems like a bit of a miss on the new "Swiss Senses" experience. Other than that, excellent service.
Ethiopian Air
7.2
Good
1,012 reviews
SWISS
7.5
Good
2,010 reviews

Entertainment

6.8

Overall

7.5

Crew

8.3

Boarding

7.7

Comfort

7.4

Food

7.1

Reviews

1 / 20
10.0
Excellent

Thomas,Mar 2026

BOS - ZRH

The business class seats on the new Swiss A350 are hard as a rock. Seems like a bit of a miss on the new "Swiss Senses" experience. Other than that, excellent service.

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?

    Ethiopian Air and United Airlines can get you from Boston to Monrovia in just under 27h 45m. Your travel time can differ by up to 20h 05m. 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, United Airlines ($1,035), Brussels Airlines ($1,204), and Ethiopian Air ($1,308) offers the cheapest pricing from Boston to Monrovia. United Airlines is 31% 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, August is the cheapest month in which you can book a flight from Boston to Monrovia (average of $1,208). Flying from Boston to Monrovia in December is currently the most expensive (average of $1,899). 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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Top 4 airlines flying from Boston to Monrovia

Discover the top 4 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 July 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,035Average$1,450FlexibilityNo cancel feeOn-time69%
Brussels AirlinesCheapest$1,204Average$1,594FlexibilityNo cancel feeOn-timeN/A
Ethiopian AirCheapest$1,308Average$1,436FlexibilityNo cancel feeOn-time72%
SWISSCheapest$1,332Average$1,570FlexibilityNo cancel feeOn-time79%

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