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Cheap flights from Portland to Monrovia from $1,693

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Monrovia departing on 11/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Portland to Monrovia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Ethiopian Air Logo
2:37 pm - 2:45 pm-
40h 08m
Ethiopian Air Logo
7:30 am - 8:25 pm-
44h 55m
$1,693Ethiopian Air
Sat, Nov 21 - Sat, Dec 5
Multiple Airlines Logo
2:37 pm - 2:45 pm-
40h 08m
Multiple Airlines Logo
7:30 am - 8:25 pm-
44h 55m
$1,703Multiple Airlines
Sat, Nov 21 - Sat, Dec 5
Multiple Airlines Logo
2:37 pm - 2:45 pm-
40h 08m
Multiple Airlines Logo
7:00 am - 8:25 pm-
45h 25m
$1,704Multiple Airlines
Sat, Nov 21 - Sat, Dec 5
Multiple Airlines Logo
2:37 pm - 2:45 pm-
40h 08m
Multiple Airlines Logo
7:00 am - 8:25 pm-
45h 25m
$1,712Multiple Airlines
Sat, Nov 21 - Sat, Dec 5
Multiple Airlines Logo
2:37 pm - 2:45 pm-
40h 08m
Multiple Airlines Logo
7:00 am - 8:25 pm-
45h 25m
$1,725Multiple Airlines
Sat, Nov 21 - Sat, Dec 5
Multiple Airlines Logo
2:37 pm - 2:45 pm-
40h 08m
Multiple Airlines Logo
7:00 am - 8:25 pm-
45h 25m
$1,736Multiple Airlines
Sat, Nov 21 - Sat, Dec 5
Ethiopian Air Logo
2:37 pm - 2:45 pm-
40h 08m
Ethiopian Air Logo
7:30 am - 8:25 pm-
44h 55m
$1,738Ethiopian Air
Sat, Nov 21 - Sat, Dec 5
Multiple Airlines Logo
11:10 pm - 5:50 pm-
34h 40m
Multiple Airlines Logo
7:30 am - 8:25 pm-
44h 55m
$1,746Multiple Airlines
Sat, Nov 21 - Sat, Dec 5
Multiple Airlines Logo
11:10 pm - 5:50 pm-
34h 40m
Multiple Airlines Logo
7:30 am - 8:25 pm-
44h 55m
$1,785Multiple Airlines
Sat, Nov 21 - Sat, Dec 5
Multiple Airlines Logo
11:10 pm - 5:50 pm-
34h 40m
Multiple Airlines Logo
7:30 am - 8:25 pm-
44h 55m
$1,787Multiple Airlines
Sat, Nov 21 - Sat, Dec 5

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Ethiopian Air flights from Portland to Monrovia

Our best Ethiopian Air deals on Portland to Monrovia flight tickets
Ethiopian Air
Nov 21
PDX2:37 pmPortland
40h 08m
2 stops
ROB2:45 pmMonrovia Roberts Intl
Dec 5
ROB7:30 amMonrovia Roberts Intl
44h 55m
3 stops
PDX8:25 pmPortland
$1,693
Ethiopian Air
Nov 21
PDX2:37 pmPortland
40h 08m
2 stops
ROB2:45 pmMonrovia Roberts Intl
Dec 5
ROB7:30 amMonrovia Roberts Intl
44h 55m
3 stops
PDX8:25 pmPortland
$1,738

Brussels Airlines flights from Portland to Monrovia

Our best Brussels Airlines deals on Portland to Monrovia flight tickets
Brussels Airlines
Dec 7
PDX10:56 pmPortland
38h 19m
3 stops
ROB9:15 pmMonrovia Roberts Intl
Jan 20
ROB10:45 pmMonrovia Roberts Intl
28h 22m
2 stops
PDX7:07 pmPortland
$2,386
Brussels Airlines
Dec 7
PDX8:00 amPortland
29h 15m
3 stops
ROB9:15 pmMonrovia Roberts Intl
Jan 20
ROB10:45 pmMonrovia Roberts Intl
28h 22m
2 stops
PDX7:07 pmPortland
$2,822
Brussels Airlines
Dec 7
PDX8:00 amPortland
29h 15m
3 stops
ROB9:15 pmMonrovia Roberts Intl
Jan 20
ROB10:45 pmMonrovia Roberts Intl
28h 22m
2 stops
PDX7:07 pmPortland
$2,823

momondo 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, momondo users made 832,500 searches. Data last updated August 4, 2026.
Use the filters below to find and compare flights from Portland to Monrovia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

2:37 pm-2:45 pm

2 stops40h 08m

Monrovia Roberts Intl

Sat 12/5

7:30 am-8:25 pm

3 stops44h 55m

$1,693

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

2:37 pm-2:45 pm

2 stops40h 08m

Monrovia Roberts Intl

Sat 12/5

7:30 am-8:25 pm

3 stops44h 55m

$1,703

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

2:37 pm-2:45 pm

2 stops40h 08m

Monrovia Roberts Intl

Sat 12/5

7:00 am-8:25 pm

2 stops45h 25m

$1,704

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

2:37 pm-2:45 pm

2 stops40h 08m

Monrovia Roberts Intl

Sat 12/5

7:00 am-8:25 pm

2 stops45h 25m

$1,712

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

2:37 pm-2:45 pm

2 stops40h 08m

Monrovia Roberts Intl

Sat 12/5

7:00 am-8:25 pm

2 stops45h 25m

$1,725

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

2:37 pm-2:45 pm

2 stops40h 08m

Monrovia Roberts Intl

Sat 12/5

7:00 am-8:25 pm

2 stops45h 25m

$1,736

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

2:37 pm-2:45 pm

2 stops40h 08m

Monrovia Roberts Intl

Sat 12/5

7:30 am-8:25 pm

3 stops44h 55m

$1,738
Quickest round-trip

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

11:10 pm-5:50 pm

3 stops34h 40m

Monrovia Roberts Intl

Sat 12/5

7:30 am-8:25 pm

3 stops44h 55m

$1,746

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

11:10 pm-5:50 pm

3 stops34h 40m

Monrovia Roberts Intl

Sat 12/5

7:30 am-8:25 pm

3 stops44h 55m

$1,785

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

11:10 pm-5:50 pm

3 stops34h 40m

Monrovia Roberts Intl

Sat 12/5

7:30 am-8:25 pm

3 stops44h 55m

$1,787

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Portland to Monrovia

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Monrovia according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Monrovia (PDX to ROB) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Monrovia

Fastest flight time

38h 19m

Direct flights

None
The fastest flight from Portland to Monrovia takes 38h 19m
There are no direct flights from Portland to Monrovia. There are no popular flight routes from Portland to Monrovia.
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Frequently asked questions about flying from Portland to Monrovia

  • How far is Portland to Monrovia Roberts Intl by plane?

    A flight from Portland to Monrovia Roberts Intl will travel around 6934.9 mi. By plane, this route typically takes 38h 19m.

  • When did momondo last update prices for flights from Portland Airport to Monrovia Roberts Intl Airport?

    Prices for flights from Portland Airport to Monrovia Roberts Intl Airport were last updated today.

  • How old do you have to be to fly from Portland Airport to Monrovia Roberts Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Monrovia Roberts Intl Airport.

  • What documentation or ID do you need to fly to Monrovia Roberts Intl Airport?

    The required travel and health documents for your Monrovia Roberts Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Monrovia Roberts Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Portland to Monrovia

  • How do I get Price Alerts for flights from Portland to Monrovia?

    Confirm your travel details to search for the latest offers for flights from Portland to Monrovia. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Portland to Monrovia with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Monrovia?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to Monrovia for you.

Can I find flights from Portland to Monrovia with flexible booking policies on momondo?

Flights from Portland to Monrovia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Portland to Monrovia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Monrovia from Portland.

I’m not ready to book a flight from Portland to Monrovia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Monrovia from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cabin classes currently available on flights to Monrovia

List of cabin classes available on flights landing in Monrovia. Availability may vary depending on flight origin and airline.
First Class to Monrovia
Business Class to Monrovia