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.

$1,684 Cheap Flights from Portland to Liberia in 2025/26

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Find the cheapest flights from Portland to Liberia

Round-trip

Cheap round-trip flights

10:46 am - 7:50 pmPDX-ROB

26h 04m3 stops

9:10 pm - 8:20 pmROB-PDX

30h 10m2 stops

$1,684Brussels Airlines

Find Deal

Sat, Sep 27 - Wed, Oct 1

10:46 am - 7:50 pmPDX-ROB

26h 04m3 stops

9:10 pm - 8:20 pmROB-PDX

30h 10m2 stops

$1,685Brussels Airlines

Find Deal

Sat, Sep 27 - Wed, Oct 1

11:59 pm - 9:15 pmPDX-ROB

37h 16m3 stops

10:45 pm - 10:15 pmROB-PDX

31h 30m2 stops

$1,722United Airlines

Find Deal

Sun, Nov 30 - Wed, Dec 10

11:59 pm - 9:15 pmPDX-ROB

37h 16m3 stops

10:45 pm - 12:12 pmROB-PDX

45h 27m3 stops

$1,738United Airlines

Find Deal

Sun, Nov 30 - Wed, Dec 10

1:25 pm - 5:40 pmPDX-ROB

45h 15m2 stops

6:40 pm - 9:05 pmROB-PDX

33h 25m2 stops

$2,591Delta

Find Deal

Sat, Sep 27 - Wed, Oct 1

1:25 pm - 5:40 pmPDX-ROB

45h 15m2 stops

6:40 pm - 9:05 pmROB-PDX

33h 25m2 stops

$2,622Delta

Find Deal

Sat, Sep 27 - Wed, Oct 1

7:25 pm - 7:50 pmPDX-ROB

41h 25m3 stops

11:05 am - 7:58 pmROB-PDX

64h 53m3 stops

$6,641Multiple Airlines

Find Deal

Wed, Oct 22 - Mon, Nov 3

5:45 pm - 2:45 pmPDX-ROB

61h 00m2 stops

10:45 pm - 6:45 pmROB-PDX

28h 00m2 stops

$6,840Multiple Airlines

Find Deal

Sun, Nov 30 - Wed, Dec 10

7:25 pm - 5:40 pmPDX-ROB

63h 15m2 stops

11:05 am - 7:58 pmROB-PDX

64h 53m3 stops

$6,857Multiple Airlines

Find Deal

Wed, Oct 22 - Mon, Nov 3

7:25 pm - 5:50 pmPDX-ROB

63h 25m2 stops

3:40 pm - 3:55 pmROB-PDX

56h 15m2 stops

$7,897Multiple Airlines

Find Deal

Wed, Oct 22 - Mon, Nov 3

United Airlines flights from Portland to Liberia

Our best United Airlines deals on Portland to Liberia flight tickets

United Airlines

Nov 30

PDX11:59 pmPortland

37h 16m

3 stops

ROB9:15 pmMonrovia Roberts Intl

Dec 10

ROB10:45 pmMonrovia Roberts Intl

31h 30m

2 stops

PDX10:15 pmPortland

$1,722

Find similar

United Airlines

Nov 30

PDX11:59 pmPortland

37h 16m

3 stops

ROB9:15 pmMonrovia Roberts Intl

Dec 10

ROB10:45 pmMonrovia Roberts Intl

45h 27m

3 stops

PDX12:12 pmPortland

$1,738

Find similar

Delta flights from Portland to Liberia

Our best Delta deals on Portland to Liberia flight tickets

Delta

Sep 27

PDX1:25 pmPortland

45h 15m

2 stops

ROB5:40 pmMonrovia Roberts Intl

Oct 1

ROB6:40 pmMonrovia Roberts Intl

33h 25m

2 stops

PDX9:05 pmPortland

$2,591

Find similar

Delta

Sep 27

PDX1:25 pmPortland

45h 15m

2 stops

ROB5:40 pmMonrovia Roberts Intl

Oct 1

ROB6:40 pmMonrovia Roberts Intl

33h 25m

2 stops

PDX9:05 pmPortland

$2,622

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 9/27

10:46 am-7:50 pm

3 stops26h 04m

Monrovia Roberts Intl

Wed 10/1

9:10 pm-8:20 pm

2 stops30h 10m

$1,684

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 9/27

10:46 am-7:50 pm

3 stops26h 04m

Monrovia Roberts Intl

Wed 10/1

9:10 pm-8:20 pm

2 stops30h 10m

$1,685

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sun 11/30

11:59 pm-9:15 pm

3 stops37h 16m

Monrovia Roberts Intl

Wed 12/10

10:45 pm-10:15 pm

2 stops31h 30m

$1,722

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sun 11/30

11:59 pm-9:15 pm

3 stops37h 16m

Monrovia Roberts Intl

Wed 12/10

10:45 pm-12:12 pm

3 stops45h 27m

$1,738

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 9/27

1:25 pm-5:40 pm

2 stops45h 15m

Monrovia Roberts Intl

Wed 10/1

6:40 pm-9:05 pm

2 stops33h 25m

$2,591

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sat 9/27

1:25 pm-5:40 pm

2 stops45h 15m

Monrovia Roberts Intl

Wed 10/1

6:40 pm-9:05 pm

2 stops33h 25m

$2,622

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Wed 10/22

7:25 pm-7:50 pm

3 stops41h 25m

Monrovia Roberts Intl

Mon 11/3

11:05 am-7:58 pm

3 stops64h 53m

$6,641

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Sun 11/30

5:45 pm-2:45 pm

2 stops61h 00m

Monrovia Roberts Intl

Wed 12/10

10:45 pm-6:45 pm

2 stops28h 00m

$6,840

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Wed 10/22

7:25 pm-5:40 pm

2 stops63h 15m

Monrovia Roberts Intl

Mon 11/3

11:05 am-7:58 pm

3 stops64h 53m

$6,857

PortlandMonrovia

PDX - ROB

PDXROB

Portland

Wed 10/22

7:25 pm-5:50 pm

2 stops63h 25m

Monrovia Roberts Intl

Mon 11/3

3:40 pm-3:55 pm

2 stops56h 15m

$7,897

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Portland to Liberia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Liberia?

On average, the least expensive day to fly to Liberia from Portland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,726. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Liberia for around $3,660.

What is the cheapest time of day to depart on your flight to Liberia?

In the morning is the cheapest time of day to fly from Portland to Liberia when you can find flight prices for as low as $1,890. Flying to Liberia in the morning is an ideal time because this is during off-peak travel hours. Flights to Liberia are more costly in the evening, with an average ticket price of $2,068. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Portland to Liberia flight deals and tips

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

Direct flights	None

There are no direct flights from Portland to Liberia. There are no popular flight routes from Portland to Liberia.

Search flight deals

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.

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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Flights to Monroviafrom $1,023

Cheap flights from Portland to Liberia from $1,684

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 9/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

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Filter for what you want

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Find the cheapest flights from Portland to Liberia

Cheap round-trip flights

United Airlines flights from Portland to Liberia

Our best United Airlines deals on Portland to Liberia flight tickets

Delta flights from Portland to Liberia

Our best Delta deals on Portland to Liberia flight tickets

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Use the filters below to find and compare flights from Portland to Liberia that are best for you.

See travel insights to Liberia from

How to get the cheapest flight ticket from Portland to Liberia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Liberia?

What is the cheapest time of day to depart on your flight to Liberia?

Cheap Portland to Liberia flight deals and tips

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

Direct flights

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

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

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

Why use momondo?

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

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

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

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

An easier way to manage your Liberia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Liberia

Popular cities in Liberia

Popular flights according to clicks in the last 7 days on momondo