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Monrovia

$1,858+ Cheap flights from Portland (PDX) 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — ROB
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Portland to Monrovia

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 June 12, 2025.

Round-trip from

$1,858
(United)
From Portland to Monrovia Roberts Intl
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Find flight deals from Portland to Monrovia

Cheapest flights from Portland to Monrovia
Explore the most affordable flight options available from Portland to Monrovia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This United deal was found by Cheapflights users on 6/11. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1111:59 pmPDX - ROB
3 stops36h 51mMultiple Airlines
Fri 7/189:10 pmROB - PDX
2 stops29h 42mMultiple Airlines
Deal found 6/11$1,858
This Gurufare deal was found by Cheapflights users on 6/12. 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 7/107:00 amPDX - ROB
2 stops29h 50mBrussels Airlines
Fri 7/189:10 pmROB - PDX
2 stops28h 35mBrussels Airlines
Deal found 6/12$3,135

Cheapflights Fare Finder

Customize your flight search to find flights from Portland 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 June 12, 2025.
Use the filters below to find and compare flights from Portland to Monrovia that are best for you.

Fly from

Portland

Fly to

Monrovia

Route

Depart

Return

Price

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Fri 7/11

11:59 pm-7:50 pm

3 stops36h 51m

Monrovia Roberts Intl

Fri 7/18

9:10 pm-7:52 pm

2 stops29h 42m

$1,858

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Thu 7/10

7:00 am-7:50 pm

2 stops29h 50m

Monrovia Roberts Intl

Fri 7/18

9:10 pm-6:45 pm

2 stops28h 35m

$3,135

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from Portland to Monrovia

Have a flexible travel schedule? Discover the best time to fly to Monrovia from Portland 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 Portland to Monrovia

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

Find hourly flight availability from Portland 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 June 12, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 9% on flights from Portland to Monrovia by exploring options for tickets in the morning.

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 June 12, 2025.
Brussels Airlines
7.4
Good
355 reviews

Boarding

7.5

Food

6.4

Crew

8.0

Comfort

7.1

Overall

7.4

Entertainment

6.3

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
7.4
Good
355 reviews
Brussels Airlines
7.4
Good
355 reviews

Boarding

7.5

Food

6.4

Crew

8.0

Comfort

7.1

Overall

7.4

Entertainment

6.3

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 Portland to Monrovia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland 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 Portland to Monrovia?

    Currently, September is the cheapest month in which you can book a flight from Portland to Monrovia (average of $1,197). Flying from Portland to Monrovia in May is currently the most expensive (average of $1,858). 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.

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