BOS - ROB

$718 Find Cheap Flights from Boston to Monrovia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Monrovia departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Monrovia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Monrovia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Monrovia, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,208
Overall average: $1,547
Brussels Airlines
Mon 2/16Wed 2/25
BOS - ROB • 3 stops
Cheapest one-way
$718
Multiple Airlines
Wed 3/11
BOS - ROB • 2 stops
Top airlines
Brussels Airlines
Cheapest • from $1,208 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
August
Cheapest • 33% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Monrovia!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Monrovia (BOS-ROB)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Monrovia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Monrovia

Mon, Feb 16 - Wed, Feb 25
Brussels Airlines Logo
7:45 am - 9:15 pm
BOS
-
ROB
32h 30m
3 stops
Brussels Airlines Logo
10:45 pm - 2:52 pm
ROB
-
BOS
21h 07m
2 stops
$1,208Brussels Airlines
Tue, Mar 3 - Wed, Mar 18
Brussels Airlines Logo
3:35 pm - 9:15 pm
BOS
-
ROB
24h 40m
3 stops
Brussels Airlines Logo
10:45 pm - 6:41 pm
ROB
-
BOS
23h 56m
2 stops
$1,214Brussels Airlines
Mon, Mar 2 - Wed, Mar 18
Brussels Airlines Logo
2:20 pm - 9:15 pm
BOS
-
ROB
25h 55m
3 stops
Brussels Airlines Logo
10:45 pm - 6:41 pm
ROB
-
BOS
23h 56m
2 stops
$1,215Brussels Airlines
Mon, Mar 2 - Tue, Mar 17
United Airlines Logo
1:55 pm - 9:15 pm
BOS
-
ROB
26h 20m
3 stops
United Airlines Logo
10:45 pm - 11:57 pm
ROB
-
BOS
29h 12m
2 stops
$1,232United Airlines
Sun, Mar 1 - Tue, Mar 17
United Airlines Logo
4:25 pm - 9:15 pm
BOS
-
ROB
47h 50m
3 stops
United Airlines Logo
10:45 pm - 7:36 pm
ROB
-
BOS
24h 51m
2 stops
$1,238United Airlines
Wed, Mar 4 - Wed, Mar 18
SWISS Logo
9:50 pm - 6:45 pm
BOS
-
ROB
39h 55m
2 stops
SWISS Logo
10:45 pm - 9:20 pm
ROB
-
BOS
26h 35m
2 stops
$1,259SWISS
Wed, Mar 4 - Tue, Mar 17
Brussels Airlines Logo
8:40 pm - 6:45 pm
BOS
-
ROB
41h 05m
2 stops
Brussels Airlines Logo
10:45 pm - 7:35 pm
ROB
-
BOS
24h 50m
2 stops
$1,281Brussels Airlines
Tue, Mar 3 - Sun, Mar 22
Brussels Airlines Logo
3:35 pm - 9:15 pm
BOS
-
ROB
24h 40m
3 stops
Brussels Airlines Logo
10:45 pm - 6:41 pm
ROB
-
BOS
23h 56m
2 stops
$1,282Brussels Airlines
Mon, Mar 2 - Sun, Mar 22
SWISS Logo
4:15 pm - 9:15 pm
BOS
-
ROB
24h 00m
3 stops
SWISS Logo
10:45 pm - 5:19 pm
ROB
-
BOS
22h 34m
2 stops
$1,283SWISS
Fri, Feb 27 - Tue, Mar 17
United Airlines Logo
4:25 pm - 9:15 pm
BOS
-
ROB
47h 50m
3 stops
United Airlines Logo
10:45 pm - 11:57 pm
ROB
-
BOS
29h 12m
2 stops
$1,289United Airlines
Booking Insights

KAYAK's insights & trends for Boston to Monrovia flights

Get data-powered insights and trends into flights from Boston to Monrovia to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Boston to Monrovia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Monrovia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Monrovia is August, where tickets cost $1,035 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $1,899 and $1,760 respectively.

Good to know

Low seasonSeptember
Cheapest flight$718
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Boston to Monrovia

When to book flights from Boston to Monrovia

Are your dates flexible? Find out the best times to travel from Boston to Monrovia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Monrovia

  • What is the cheapest flight from Boston to Monrovia?

    In the last 3 days, the lowest price for a flight from Boston to Monrovia was $718 for a one-way ticket and $1,208 for a round-trip.

  • Do I need a passport to fly between Boston and Monrovia?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Boston and on arrival in Monrovia.

  • Which aircraft models fly most regularly from Boston to Monrovia?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Monrovia?

    oneworld, and Star Alliance are the airline alliances operating flights between Boston and Monrovia, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Boston to Monrovia, United Airlines or Brussels Airlines?

    The two airlines most popular with KAYAK users for flights from Boston to Monrovia are United Airlines and Brussels Airlines. With an average price for the route of $1,409 and an overall rating of 7.4, United Airlines is the most popular choice. Brussels Airlines is also a great choice for the route, with an average price of $1,592 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Boston to Monrovia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Monrovia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Monrovia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Monrovia from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Monrovia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Monrovia with an airline and back to Boston with another airline. Booking your flights between Boston and ROB can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Monrovia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Monrovia from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Boston to Monrovia

 
See real verified KAYAK customer reviews for airlines flying from Boston to Monrovia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Monrovia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9218 reviews
8.1Crew
6.6Food
7.7Boarding
7.1Entertainment
7.3Comfort
Airline reviews

The attendant on board was amazing. She should be doing business/first international long haul.

10.0 ExcellentJeremy, Feb 2026
EWR - BTV
Read more United Airlines reviews

The attendant on board was amazing. She should be doing business/first international long haul.

Although our flight was delayed the overall boarding process was very smooth and the crew was accommodating.

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

The food was terrible this time. Otherwise pleasant, quiet, on-time.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

It would be nice to have some low carb options in the snacks.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

Flight was canceled. I asked to be rerouted to OKC and then took an Uber.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

Flight from London was delayed so missed the connecting flight. Taking 2 days to get to destination which should have only taken a few hours.

Too cramped up for the better seats I paid for.

I didn’t like my seat in my return flight from Montreal to Orlando at all; considering I paid extra for better seats. That middle seat was cramped up way too much.

Suitcase didn’t arrive to Stockholm. Chairs y comfy and not even water is offered

Bad baggage and people management at boarding forcing me to dispatch my bad despite being the perfect size and respecting everything perfectly, whereas many did not and many free empty spots on the plane as usual… making me loose time and my planned bus at arrival to go to Geneva. Costing me 100 euros extra! So Brussels airlines needs to refund me

I never board the flight. My visa was delayed and when I tried calling Kayak, no one answer and I still have not heard from anyone.

All great. Very efficient. Good emails that kept us in the know

Original flight was canceled, booked another one and find out when checking I was on the waiting list. Horrible experience

Actually this is my first time using airline I was in every single thing that happened throughout our journey, the appearance of the plane inside furnished about the seating the flight attendants and many many more I was so excited throughout thank you Brussels Airlines for the great service.

On board service was decent. I like the legroom at UA that seems to be more than in other airlines

A bit chaotic boarding flight but over all good experience.

The crew was unfriendly and very rude to name a few (Helina). I felt unsafe due to most of the cabinets were open while on flight. All in all the flight was ok, but the crew needed more training on customer service most of all for international flights.

Delay not posted, only departure time listed- not boarding time. We left an hour late and arrived 45 min late. Restrooms had backed up sinks and toilets not flushed ) passenger error). Lots of screen for entertainment didn’t work. But we arrived with our luggage

The plane was old and the luggage racks above us were visibly shaking during turbulence. Water was dripping on our heads during landing. Our flight was over 2 hours late departing but we were not updated or told what to expect as the screen at the gate continued to read “on time”

Check in took over an hour because printer was not working. Attendant did not know how to give free layover Addis Ababa hotel vouchers or update frequent flyer number. After repeated attempts, got voucher emailed. However hotel wanted printed voucher hence more delay. Bus time from hotel back to airport was printed 4:50 hours, but hotel reception called at 3 pm saying bus will leave at 4 pm. Then hotel reception called again saying 4:15 pm. We rushed at 4:15 pm and bus was not ready until 4:40 pm. Many audio outlets were not working in planes.

It is nice and great but the houstees crew are all the way back arguing with customers and behavior issues same of the crew i saw that also all the trips were very much butter!

Our first flight was delayed and when we got off that plane, nobody was really helping to direct us to the next gate. It was very frustrating. One staff simply said hurry, which wasn’t helpful. We had to go a long way to get to the next gate. Another issue on the plane itself was the bathrooms were disgusting and filthy and it didn’t seem like anybody was checking on them were cleaning them and it was a long flight. There was urine on the floor and they stunk. Also, the screen in front of my seat did not work, and I tried different headphones and still had no sound. You would think somehow those things are reviewed occasionally for working order.

The food was terrible and the seating was uncomfortable, but the airline did a great thing letting us board in Abbis Ababa on our connecting flight after our original flight was very delayed.

Traveling with Ethiopian is always a good experience. I also enjoy the stay at skylight hotel in Addis

The flight is packed and it feels like the space per individual has gotten smaller. Excruciating for a 14hr flight.

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

Information on your arrival and departure airports