$893+ 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ROB
Oct 29 — Nov 51
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Monrovia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Boston to Monrovia
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Best
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One-way
Cheapest flights from Boston to MonroviaExplore 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 29, 2026.
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 29, 2026.
This Justfly.com deal was found by Cheapflights users on 9/28. 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.
Wed 10/281:00 pm -
2 stops33h 25m
Tue 11/33:25 am -
2 stops25h 24m
Deal found 9/28![Multiple Airlines logo]()
$1,439
This oojo deal was found by Cheapflights users on 9/27. 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 11/175:30 am -
2 stops28h 15m
Tue 12/111:05 am -
3 stops41h 54m
Deal found 9/27![Ethiopian Air logo]()
$1,454
This oojo deal was found by Cheapflights users on 9/24. 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 12/67:10 am -
2 stops29h 40m
Wed 12/307:45 am -
2 stops21h 02m
Deal found 9/24![Ethiopian Air logo]()
$1,546
This oojo deal was found by Cheapflights users on 9/28. 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 11/216:00 am -
2 stops27h 45m
Thu 1/217:30 am -
3 stops29h 08m
Deal found 9/28![Ethiopian Air logo]()
$1,552
This Ovago deal was found by Cheapflights users on 9/27. 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.
Thu 10/229:51 am -
3 stops27h 59m
Sun 11/1511:05 am -
3 stops35h 53m
Deal found 9/27![Multiple Airlines logo]()
$1,575
This United Airlines deal was found by Cheapflights users on 9/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:05 pm -
2 stops42h 55m
Tue 12/110:45 pm -
2 stops25h 00m
Deal found 9/25![United Airlines logo]()
$1,584
This CheapOair deal was found by Cheapflights users on 9/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/289:20 pm -
3 stops39h 20m
Mon 1/186:40 pm -
3 stops51h 24m
Deal found 9/25![Multiple Airlines logo]()
$1,619
Best flights from Boston to MonroviaDiscover carefully curated flight deals from Boston to Monrovia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 29, 2026.
Discover carefully curated flight deals from Boston to Monrovia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 29, 2026.
This oojo deal was found by Cheapflights users on 9/24. 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 12/67:10 am -
2 stops29h 40m
Wed 12/307:45 am -
2 stops21h 02m
Deal found 9/24![Ethiopian Air logo]()
$1,546
This United Airlines deal was found by Cheapflights users on 9/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:05 pm -
2 stops42h 55m
Tue 12/110:45 pm -
2 stops25h 00m
Deal found 9/25![United Airlines logo]()
$1,584
This Justfly.com deal was found by Cheapflights users on 9/29. 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 2/147:30 pm -
2 stops49h 55m
Sun 5/25:45 am -
2 stops22h 14m
Deal found 9/29![Multiple Airlines logo]()
$1,604
This United Airlines deal was found by Cheapflights users on 9/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/112:30 pm -
3 stops27h 45m
Fri 4/29:10 pm -
2 stops25h 39m
Deal found 9/28![United Airlines logo]()
$1,628
This KAYAK deal was found by Cheapflights users on 9/28. 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.
Tue 11/179:50 pm -
2 stops40h 10m
Tue 12/110:45 pm -
2 stops21h 08m
Deal found 9/28![Multiple Airlines logo]()
$1,652
This FlightHub deal was found by Cheapflights users on 9/24. 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.
Sun 12/68:07 pm -
3 stops42h 23m
Wed 12/307:45 am -
3 stops21h 02m
Deal found 9/24![Multiple Airlines logo]()
$1,657
This FlightHub deal was found by Cheapflights users on 9/29. 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 12/287:40 pm -
2 stops38h 05m
Sun 1/2411:05 am -
3 stops35h 36m
Deal found 9/29![Multiple Airlines logo]()
$1,806
Last-minute flights from Boston to MonroviaDiscover last-minute flight deals from Boston to Monrovia. Data last updated September 29, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Monrovia. Data last updated September 29, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:51 am -
3 stops28h 59m
Tue 10/139:10 pm -
2 stops23h 36m
Deal found 9/26![United Airlines logo]()
$2,078
This Ethiopian Air deal was found by Cheapflights users on 9/26. 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 Ethiopian Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/105:45 am -
3 stops32h 05m
Tue 10/1311:00 am -
3 stops40h 59m
Deal found 9/26![Ethiopian Air logo]()
$2,468
This Ovago deal was found by Cheapflights users on 9/27. 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.
Thu 10/229:51 am -
3 stops27h 59m
Sun 11/1511:05 am -
3 stops35h 53m
Deal found 9/27![Multiple Airlines logo]()
$1,575
This Justfly.com deal was found by Cheapflights users on 9/28. 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.
Wed 10/281:00 pm -
2 stops33h 25m
Tue 11/33:25 am -
2 stops25h 24m
Deal found 9/28![Multiple Airlines logo]()
$1,439
One-way flights from Boston to MonroviaSearch for one-way flight options from Boston to Monrovia. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
Search for one-way flight options from Boston to Monrovia. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
This KAYAK deal was found by Cheapflights users on 9/27. 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.
Mon 10/55:10 pm -
3 stops22h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![SWISS logo]()
$893
This FlightHub deal was found by Cheapflights users on 9/27. 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 10/512:45 pm -
2 stops46h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$1,165
This United Airlines deal was found by Cheapflights users on 9/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:05 pm -
3 stops45h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![United Airlines logo]()
$1,814
This BusinessClass deal was found by Cheapflights users on 9/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:46 am -
2 stops38h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$2,193
This Ethiopian Air deal was found by Cheapflights users on 9/25. 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 Ethiopian Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:20 pm -
2 stops64h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Ethiopian Air logo]()
$2,310
This BusinessClass deal was found by Cheapflights users on 9/28. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:40 pm -
3 stops42h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![SWISS logo]()
$5,179
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 September 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,313 (FlightHub) |
One-way from | $893 (KAYAK) |
Popular in | December |
Cheapest in | March |
Average price | $1,523 |
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 7,457,451 searches. Data last updated September 29, 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
Cheapest round-trip
Quickest round-trip
BostonMonrovia
BOS Boston Logan Intl - ROB Monrovia Roberts Intl
BOSROB
Boston Logan Intl
Mon 10/5
5:10 pm-7:50 pm
3 stops22h 40m
Monrovia Roberts Intl
Wed 12/31
12:00 am-7:44 pm
Nonstop0h 00m
$893
BostonMonrovia
BOS Boston Logan Intl - ROB Monrovia Roberts Intl
BOSROB
Boston Logan Intl
Mon 10/5
12:45 pm-2:45 pm
2 stops46h 00m
Monrovia Roberts Intl
Wed 12/31
12:00 am-7:44 pm
Nonstop0h 00m
$1,165
BostonMonrovia
BOS Boston Logan Intl - ROB Monrovia Roberts Intl
BOSROB
Boston Logan Intl
Sun 12/6
7:10 am-5:50 pm
2 stops29h 40m
Monrovia Roberts Intl
Wed 12/30
7:45 am-11:47 pm
2 stops21h 02m
$1,546
BostonMonrovia
BOS Boston Logan Intl - ROB Monrovia Roberts Intl
BOSROB
Boston Logan Intl
Tue 11/17
7:05 pm-7:00 pm
2 stops42h 55m
Monrovia Roberts Intl
Tue 12/1
10:45 pm-6:45 pm
2 stops25h 00m
$1,584
BostonMonrovia
BOS Boston Logan Intl - ROB Monrovia Roberts Intl
BOSROB
Boston Logan Intl
Sun 2/14
7:30 pm-2:25 am
2 stops49h 55m
Monrovia Roberts Intl
Sun 5/2
5:45 am-11:59 pm
2 stops22h 14m
$1,604
BostonMonrovia
BOS Boston Logan Intl - ROB Monrovia Roberts Intl
BOSROB
Boston Logan Intl
Mon 3/1
12:30 pm-9:15 pm
3 stops27h 45m
Monrovia Roberts Intl
Fri 4/2
9:10 pm-6:49 pm
2 stops25h 39m
$1,628
BostonMonrovia
BOS Boston Logan Intl - ROB Monrovia Roberts Intl
BOSROB
Boston Logan Intl
Tue 11/17
9:50 pm-7:00 pm
2 stops40h 10m
Monrovia Roberts Intl
Tue 12/1
10:45 pm-2:53 pm
2 stops21h 08m
$1,652
BostonMonrovia
BOS Boston Logan Intl - ROB Monrovia Roberts Intl
BOSROB
Boston Logan Intl
Sun 12/6
8:07 pm-7:30 pm
3 stops42h 23m
Monrovia Roberts Intl
Wed 12/30
7:45 am-11:47 pm
3 stops21h 02m
$1,657
BostonMonrovia
BOS Boston Logan Intl - ROB Monrovia Roberts Intl
BOSROB
Boston Logan Intl
Mon 12/28
7:40 pm-2:45 pm
2 stops38h 05m
Monrovia Roberts Intl
Sun 1/24
11:05 am-5:41 pm
3 stops35h 36m
$1,806
BostonMonrovia
BOS Boston Logan Intl - ROB Monrovia Roberts Intl
BOSROB
Boston Logan Intl
Wed 11/25
7:05 pm-9:15 pm
3 stops45h 10m
Monrovia Roberts Intl
Wed 12/31
12:00 am-7:44 pm
Nonstop0h 00m
$1,814
Showing 1-10 of 12 resultsSorted 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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars |
- 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.
BOS-ROB
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, March is the cheapest month in which you can book a flight from Boston to Monrovia (average of $1,365). Flying from Boston to Monrovia in December is currently the most expensive (average of $1,986). 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?
Airfare is below average for this route at the moment.
Boston to Monrovia flights typically cost between $1,355 and $1,498 in March.The cheapest round-trip price found within the last 5 days was $1,313 on Multiple Airlines (Mar 3-Apr 4).
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 29, 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.
Overall
7.5
Food
7.1
Boarding
7.7
Entertainment
6.8
Comfort
7.4
Crew
8.2
Reviews
1 / 20
8.0
ExcellentAnonymous,Sep 2026
LAX - ZRH
Overall
7.5
Food
7.1
Boarding
7.7
Entertainment
6.8
Comfort
7.4
Crew
8.2
Reviews
1 / 20
8.0
ExcellentAnonymous,Sep 2026
LAX - ZRH
Overall
7.5
Food
7.1
Boarding
7.7
Entertainment
6.8
Comfort
7.4
Crew
8.2
Reviews
1 / 20
8.0
ExcellentAnonymous,Sep 2026
LAX - ZRH
Overall
7.5
Food
7.1
Boarding
7.7
Entertainment
6.8
Comfort
7.4
Crew
8.2
Reviews
1 / 20
8.0
ExcellentAnonymous,Sep 2026
LAX - ZRH
Overall
7.5
Food
7.1
Boarding
7.7
Entertainment
6.8
Comfort
7.4
Crew
8.2
Reviews
1 / 20
8.0
ExcellentAnonymous,Sep 2026
LAX - ZRH
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.
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Find flights from Boston to Monrovia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Monrovia flights
Browse other Boston and Monrovia flight options. Last updated on September 29, 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on September 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,231 | Average$1,450 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,269 | Average$1,593 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$1,308 | Average$1,533 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$1,332 | Average$1,564 | FlexibilityNo cancel fee | On-time79% |