HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Monrovia

$1,709+ Cheap flights from Sky Harbor Intl (PHX) 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ROB
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sky Harbor Intl 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 Sky Harbor Intl to Monrovia

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) 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

$1,709
(United)

Popular in

December

Cheapest in

April

Average price

$1,942
From Phoenix Sky Harbor Intl to Monrovia Roberts Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Sky Harbor Intl to Monrovia

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

This United 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/710:24 amPHX - ROB
3 stops27h 51mMultiple Airlines
Sun 12/710:45 pmROB - PHX
2 stops32h 14mMultiple Airlines
Deal found 9/9$1,709
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:38 pmPHX - ROB
2 stops23h 07mUnited Airlines
Sun 1/1110:45 pmROB - PHX
2 stops46h 31mUnited Airlines
Deal found 9/10$1,720
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/712:39 pmPHX - ROB
3 stops25h 36mUnited Airlines
Sun 12/710:45 pmROB - PHX
3 stops51h 01mUnited Airlines
Deal found 9/9$1,728
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:20 amPHX - ROB
2 stops25h 35mEthiopian Air
Tue 1/67:30 amROB - PHX
3 stops33h 53mEthiopian Air
Deal found 9/10$1,815
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2311:25 pmPHX - ROB
3 stops56h 20mEthiopian Air
Tue 12/307:30 amROB - PHX
2 stops37h 47mEthiopian Air
Deal found 9/10$1,846
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:15 pmPHX - ROB
3 stops41h 35mEthiopian Air
Tue 12/307:30 amROB - PHX
3 stops45h 19mEthiopian Air
Deal found 9/10$1,880
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/610:15 amPHX - ROB
2 stops28h 00mSWISS
Tue 12/3010:45 pmROB - PHX
3 stops31h 13mSWISS
Deal found 9/10$1,968

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Monrovia that are best for you.

Fly from

Sky Harbor Intl

Fly to

Monrovia

Route

Depart

Return

Price

PhoenixMonrovia

PHX - ROB

PHXROB

Phoenix Sky Harbor Intl

Fri 11/7

10:24 am-9:15 pm

3 stops27h 51m

Monrovia Roberts Intl

Sun 12/7

10:45 pm-11:59 pm

2 stops32h 14m

$1,709

PhoenixMonrovia

PHX - ROB

PHXROB

Phoenix Sky Harbor Intl

Thu 12/25

12:38 pm-6:45 pm

2 stops23h 07m

Monrovia Roberts Intl

Sun 1/11

10:45 pm-2:16 pm

2 stops46h 31m

$1,720

PhoenixMonrovia

PHX - ROB

PHXROB

Phoenix Sky Harbor Intl

Fri 11/7

12:39 pm-9:15 pm

3 stops25h 36m

Monrovia Roberts Intl

Sun 12/7

10:45 pm-6:46 pm

3 stops51h 01m

$1,728

PhoenixMonrovia

PHX - ROB

PHXROB

Phoenix Sky Harbor Intl

Thu 12/4

11:20 am-7:55 pm

2 stops25h 35m

Monrovia Roberts Intl

Tue 1/6

7:30 am-10:23 am

3 stops33h 53m

$1,815

PhoenixMonrovia

PHX - ROB

PHXROB

Phoenix Sky Harbor Intl

Sun 11/23

11:25 pm-2:45 pm

3 stops56h 20m

Monrovia Roberts Intl

Tue 12/30

7:30 am-2:17 pm

2 stops37h 47m

$1,846

PhoenixMonrovia

PHX - ROB

PHXROB

Phoenix Sky Harbor Intl

Sat 12/6

5:15 pm-5:50 pm

3 stops41h 35m

Monrovia Roberts Intl

Tue 12/30

7:30 am-9:49 pm

3 stops45h 19m

$1,880

PhoenixMonrovia

PHX - ROB

PHXROB

Phoenix Sky Harbor Intl

Mon 2/2

8:00 am-9:15 pm

3 stops30h 15m

Monrovia Roberts Intl

Fri 2/6

8:05 pm-10:20 pm

3 stops33h 15m

$1,995

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Best time to book a flight from Sky Harbor Intl to Monrovia

Have a flexible travel schedule? Discover the best time to fly to Monrovia from Sky Harbor Intl 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.

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.
Read reviews from past customers who have flown Brussels Airlines from Phoenix Sky Harbor Intl Airport to Monrovia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Brussels Airlines
7.3
Good
359 reviews

Comfort

6.9

Entertainment

6.1

Overall

7.3

Food

6.2

Crew

7.9

Boarding

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2025

CLT - EWR

I thought it was really good. The employees were very helpful and caring. Although the plane was a little dirty, so it could use a good cleaning. Other than that, it was good.
Brussels Airlines
7.3
Good
359 reviews
Brussels Airlines
7.3
Good
359 reviews

Comfort

6.9

Entertainment

6.1

Overall

7.3

Food

6.2

Crew

7.9

Boarding

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2025

CLT - EWR

I thought it was really good. The employees were very helpful and caring. Although the plane was a little dirty, so it could use a good cleaning. Other than that, it was good.

Related info for your journey

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

  • What airport do you fly into for flights to Monrovia from Phoenix Sky Harbor Intl?

    If you book a flight to Monrovia from Phoenix Sky Harbor Intl, you will be flying to Roberts Intl, which is the city’s only airport. Monrovia Roberts Intl (ROB) is located 30.2 mi from the center of Monrovia. There are 0 flights from Phoenix Sky Harbor Intl to Roberts Intl per day from 1 airline.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Monrovia?

    There are many flights that can get you from Phoenix Sky Harbor Intl Airport to Monrovia in 23h 07m. Fly via United Airlines or Ethiopian Air to get the fastest option. The distance from Phoenix Sky Harbor Intl Airport to Monrovia is about 6640 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Phoenix Sky Harbor Intl Airport to Monrovia round-trip?

    Flying on Brussels Airlines is currently your cheapest option to Monrovia, with prices starting at $1,203. Brussels Airlines is 34% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Sky Harbor Intl to Monrovia that include hotel bookings?

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

  • How can I find direct flights from Sky Harbor Intl to Monrovia?

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

  • Can I find deals for business class flights from Sky Harbor Intl to Monrovia?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Monrovia?

    Currently, September is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Monrovia (average of $1,197). Flying from Phoenix Sky Harbor Intl Airport 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights from Sky Harbor Intl to Monrovia by cabin class

Find flights from Sky Harbor Intl 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 airline flying from Sky Harbor Intl to Monrovia

Discover the top airline that operate flights from Sky Harbor Intl 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$1,203Average$1,724FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.