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Cheap flights from Portland to Liberia from $1,879

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 Liberia 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.
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0 bags

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Find the cheapest flights from Portland to Liberia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Ethiopian Air Logo
10:59 pm - 2:45 pm
PDX
-
ROB
31h 46m
2 stops
Ethiopian Air Logo
7:30 am - 8:25 pm
ROB
-
PDX
44h 55m
3 stops
$1,879Ethiopian Air
Sat, Nov 21 - Sat, Dec 5
Multiple Airlines Logo
5:35 pm - 2:45 pm
PDX
-
ROB
37h 10m
2 stops
Multiple Airlines Logo
7:30 am - 8:25 pm
ROB
-
PDX
44h 55m
3 stops
$1,889Multiple Airlines
Sat, Nov 21 - Sat, Dec 5
Multiple Airlines Logo
10:56 pm - 5:50 pm
PDX
-
ROB
34h 54m
3 stops
Multiple Airlines Logo
7:30 am - 8:25 pm
ROB
-
PDX
44h 55m
3 stops
$1,978Multiple Airlines
Sat, Nov 21 - Sat, Dec 5
Delta Logo
10:05 pm - 5:40 pm
PDX
-
ROB
35h 35m
2 stops
Delta Logo
6:40 pm - 9:27 pm
ROB
-
PDX
34h 47m
2 stops
$2,208Delta
Sat, Nov 21 - Sat, Dec 5

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Liberia 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 May 27, 2026.
Use the filters below to find and compare flights from Portland to Liberia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

10:59 pm-2:45 pm

2 stops31h 46m

Monrovia Roberts Intl

Sat 12/5

7:30 am-8:25 pm

3 stops44h 55m

$1,879

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

5:35 pm-2:45 pm

2 stops37h 10m

Monrovia Roberts Intl

Sat 12/5

7:30 am-8:25 pm

3 stops44h 55m

$1,889

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

10:56 pm-5:50 pm

3 stops34h 54m

Monrovia Roberts Intl

Sat 12/5

7:30 am-8:25 pm

3 stops44h 55m

$1,978
Quickest round-trip

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 11/21

10:05 pm-5:40 pm

2 stops35h 35m

Monrovia Roberts Intl

Sat 12/5

6:40 pm-9:27 pm

2 stops34h 47m

$2,208

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Portland to Liberia flight deals and tips

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

Fastest flight time

37h 10m

Direct flights

None
The fastest flight from Portland to Liberia takes 37h 10m
There are no direct flights from Portland to Liberia. There are no popular flight routes from Portland to Liberia.
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Frequently asked questions about flying from Portland to Liberia

  • When did momondo last update prices for flights from Portland Airport to Liberia?

    Prices for flights from Portland Airport to Liberia are refreshed on a daily basis.

  • How old do you have to be to fly from Portland Airport to Liberia?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Liberia.

  • What documentation or ID do you need to fly to Liberia?

    The travel and health documents you'll need for your trip to Liberia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Liberia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Portland to Liberia

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

    Price Alerts will notify you by email when the price for flights to Liberia from Portland decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

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

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Liberia. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Liberia from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Portland to Liberia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Portland to Liberia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Liberia and let you know when they change.

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