HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Monrovia

$1,036+ Cheap flights from Portland (PDX) to Monrovia (ROB)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — ROB
Mar 19 — Mar 261
Thu 3/19
Thu 3/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland 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 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 February 17, 2026.

This BusinessClass deal was found by Cheapflights users on 2/15. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:00 am
PDX
-
ROB
3 stops31h 15m
Brussels Airlines
Tue 3/2410:45 pm
ROB
-
PDX
2 stops27h 29m
Brussels Airlines
Deal found 2/15$1,427
This KAYAK deal was found by Cheapflights users on 2/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1711:00 am
PDX
-
ROB
2 stops27h 15m
Multiple Airlines
Tue 3/2410:45 pm
ROB
-
PDX
2 stops27h 29m
Multiple Airlines
Deal found 2/15$1,453
This United Airlines deal was found by Cheapflights users on 2/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1811:59 pm
PDX
-
ROB
2 stops34h 46m
United Airlines
Sun 2/2210:45 pm
ROB
-
PDX
2 stops29h 58m
United Airlines
Deal found 2/16$1,722
This KAYAK deal was found by Cheapflights users on 2/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/182:50 pm
PDX
-
ROB
3 stops28h 15m
British Airways
Tue 3/243:05 am
ROB
-
PDX
3 stops47h 11m
British Airways
Deal found 2/15$2,022
This KAYAK deal was found by Cheapflights users on 2/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/187:00 am
PDX
-
ROB
2 stops36h 05m
Multiple Airlines
Tue 3/243:05 am
ROB
-
PDX
2 stops48h 45m
Multiple Airlines
Deal found 2/15$2,034
This Expedia deal was found by Cheapflights users on 2/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/217:05 am
PDX
-
ROB
3 stops47h 40m
Multiple Airlines
Fri 2/277:30 am
ROB
-
PDX
3 stops45h 03m
Multiple Airlines
Deal found 2/13$2,135
This oojo deal was found by Cheapflights users on 2/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/217:00 am
PDX
-
ROB
3 stops48h 45m
Ethiopian Air
Sun 3/2911:05 am
ROB
-
PDX
3 stops36h 45m
Ethiopian Air
Deal found 2/16$2,734

Find 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 February 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,427
(BusinessClass)

One-way from

$1,036
(Kiwi.com)
Provider with most accurate pricing for Portland-Monrovia Roberts Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Monrovia Roberts Intl flights.
Search Deals
From Portland to Monrovia Roberts Intl
Search Deals
One-way flight from Portland to Monrovia Roberts Intl
Search Deals

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 February 17, 2026.
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

Tue 3/17

7:00 am-9:15 pm

3 stops31h 15m

Monrovia Roberts Intl

Tue 3/24

10:45 pm-7:14 pm

2 stops27h 29m

$1,427

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Tue 3/17

11:00 am-9:15 pm

2 stops27h 15m

Monrovia Roberts Intl

Tue 3/24

10:45 pm-7:14 pm

2 stops27h 29m

$1,453

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Wed 3/18

2:50 pm-2:05 am

3 stops28h 15m

Monrovia Roberts Intl

Tue 3/24

3:05 am-7:16 pm

3 stops47h 11m

$2,022

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 3/21

7:00 am-2:45 pm

3 stops48h 45m

Monrovia Roberts Intl

Sun 3/29

11:05 am-4:50 pm

3 stops36h 45m

$2,734

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 3/21

7:00 am-2:45 pm

3 stops48h 45m

Monrovia Roberts Intl

Sun 3/29

11:05 am-4:50 pm

3 stops36h 45m

$2,737

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 3/21

7:00 am-9:15 pm

3 stops31h 15m

Monrovia Roberts Intl

Sun 3/29

9:10 pm-6:34 pm

2 stops28h 24m

$3,432

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 3/21

7:00 am-9:15 pm

3 stops31h 15m

Monrovia Roberts Intl

Sun 3/29

9:10 pm-9:24 pm

2 stops31h 14m

$3,735

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sun 6/14

7:05 pm-4:35 am

3 stops50h 30m

$1,036

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

Compare providers for flights from Portland 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 Portland to Monrovia in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice 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 Portland-Monrovia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Monrovia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Monrovia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-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 Portland-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 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.

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.

  • How long is the flight from Portland to Monrovia?

    For as low as $2,022, Brussels Airlines can have you in Monrovia from Portland in 28h 15m. The distance between Portland and Monrovia is about 6953 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

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.

Alternative routes for Portland to Monrovia

See prices for flight routes from nearby airports that may be better suited for you.
Eugene to Monrovia flights

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.
Site
©2026 Cheapflights