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Cheap flights from Portland to Liberia from $157

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Liberia departing on 4/11. 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
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.
American Airlines Logo
10:15 pm - 12:37 pm
PDX
-
LIR
12h 22m1 stop
American Airlines Logo
1:21 pm - 11:46 pm
LIR
-
PDX
12h 25m1 stop
$345American Airlines
Tue, Jan 20 - Thu, Jan 29
Delta Logo
5:25 pm - 1:50 pm
PDX
-
LIR
18h 25m2 stops
Delta Logo
2:05 pm - 9:25 am
LIR
-
PDX
21h 20m2 stops
$349Delta
Sun, Feb 1 - Wed, Feb 11
American Airlines Logo
10:55 pm - 2:18 pm
PDX
-
LIR
13h 23m1 stop
American Airlines Logo
2:37 pm - 10:49 am
LIR
-
PDX
22h 12m1 stop
$354American Airlines
Tue, Feb 17 - Wed, Feb 25
United Airlines Logo
7:00 am - 6:37 pm
PDX
-
LIR
9h 37m1 stop
United Airlines Logo
8:35 am - 10:53 pm
LIR
-
PDX
16h 18m1 stop
$358United Airlines
Mon, Jan 5 - Tue, Jan 13
United Airlines Logo
7:00 am - 6:37 pm
PDX
-
LIR
9h 37m1 stop
United Airlines Logo
2:20 pm - 10:53 pm
LIR
-
PDX
10h 33m1 stop
$359United Airlines
Mon, Jan 26 - Mon, Feb 2
Delta Logo
7:50 pm - 12:50 pm
PDX
-
LIR
15h 00m2 stops
Delta Logo
3:05 pm - 12:02 pm
LIR
-
PDX
22h 57m2 stops
$363Delta
Mon, Feb 16 - Mon, Feb 23
American Airlines Logo
10:55 pm - 2:18 pm
PDX
-
LIR
13h 23m1 stop
American Airlines Logo
3:25 pm - 11:07 am
LIR
-
PDX
21h 42m1 stop
$368American Airlines
Mon, Feb 16 - Mon, Feb 23
United Airlines Logo
7:00 am - 6:37 pm
PDX
-
LIR
9h 37m1 stop
United Airlines Logo
8:35 am - 10:53 pm
LIR
-
PDX
16h 18m1 stop
$372United Airlines
Fri, Jan 30 - Fri, Feb 6
Alaska Airlines Logo
2:30 pm - 6:45 am
PDX
-
LIR
14h 15m1 stop
Alaska Airlines Logo
6:12 pm - 10:56 am
LIR
-
PDX
18h 44m1 stop
$373Alaska Airlines
Sat, Feb 21 - Sat, Feb 28
American Airlines Logo
6:22 pm - 12:30 pm
PDX
-
LIR
16h 08m2 stops
American Airlines Logo
3:18 pm - 11:07 am
LIR
-
PDX
21h 49m2 stops
$377American Airlines
Fri, Feb 6 - Sat, Feb 14

Alaska Airlines flights from Portland to Liberia

Our best Alaska Airlines deals on Portland to Liberia flight tickets
Alaska Airlines
Feb 21
PDX2:30 pmPortland
14h 15m
1 stop
LIR6:45 amLiberia
Feb 28
LIR6:12 pmLiberia
17h 30m
1 stop
PDX9:42 amPortland
$373
Find similar
Alaska Airlines
Feb 6
PDX7:20 amPortland
31h 41m
1 stop
LIR5:01 pmLiberia
Feb 14
LIR6:12 pmLiberia
18h 44m
1 stop
PDX10:56 amPortland
$380
Find similar
Alaska Airlines
Feb 21
PDX9:48 pmPortland
18h 10m
2 stops
LIR5:58 pmLiberia
Feb 28
LIR7:08 pmLiberia
16h 27m
1 stop
PDX9:35 amPortland
$409
Find similar

American Airlines flights from Portland to Liberia

Our best American Airlines deals on Portland to Liberia flight tickets
American Airlines
Jan 20
PDX10:15 pmPortland
12h 22m
1 stop
LIR12:37 pmLiberia
Jan 29
LIR1:21 pmLiberia
12h 25m
1 stop
PDX11:46 pmPortland
$345
Find similar
American Airlines
Feb 17
PDX10:55 pmPortland
13h 23m
1 stop
LIR2:18 pmLiberia
Feb 25
LIR2:37 pmLiberia
22h 12m
1 stop
PDX10:49 amPortland
$354
Find similar
American Airlines
Feb 16
PDX10:55 pmPortland
13h 23m
1 stop
LIR2:18 pmLiberia
Feb 23
LIR3:25 pmLiberia
21h 42m
1 stop
PDX11:07 amPortland
$368
Find similar

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 December 18, 2025.
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

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 1/20

10:15 pm-12:37 pm

1 stop12h 22m

Liberia

Thu 1/29

1:21 pm-11:46 pm

1 stop12h 25m

$345

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 2/1

5:25 pm-1:50 pm

2 stops18h 25m

Liberia

Wed 2/11

2:05 pm-9:25 am

2 stops21h 20m

$349

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 2/17

10:55 pm-2:18 pm

1 stop13h 23m

Liberia

Wed 2/25

2:37 pm-10:49 am

1 stop22h 12m

$354

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 1/5

7:00 am-6:37 pm

1 stop9h 37m

Liberia

Tue 1/13

8:35 am-10:53 pm

1 stop16h 18m

$358

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 1/26

7:00 am-6:37 pm

1 stop9h 37m

Liberia

Mon 2/2

2:20 pm-10:53 pm

1 stop10h 33m

$359

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 2/16

7:50 pm-12:50 pm

2 stops15h 00m

Liberia

Mon 2/23

3:05 pm-12:02 pm

2 stops22h 57m

$363

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 2/16

10:55 pm-2:18 pm

1 stop13h 23m

Liberia

Mon 2/23

3:25 pm-11:07 am

1 stop21h 42m

$368

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 1/30

7:00 am-6:37 pm

1 stop9h 37m

Liberia

Fri 2/6

8:35 am-10:53 pm

1 stop16h 18m

$372

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 2/21

2:30 pm-6:45 am

1 stop14h 15m

Liberia

Sat 2/28

6:12 pm-10:56 am

1 stop18h 44m

$373

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 2/6

6:22 pm-12:30 pm

2 stops16h 08m

Liberia

Sat 2/14

3:18 pm-11:07 am

2 stops21h 49m

$377

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Portland and Liberia?

What is the cheapest month to fly to Liberia?

The month of January is another great option to travel to Liberia, with average flight prices from Portland averaging around $500.

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 Sunday. momondo users have found tickets for Sunday departures for as low as $611. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Liberia for around $696.

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

At noon is the cheapest time of day to fly from Portland to Liberia when you can find flight prices for as low as $490. Flying to Liberia at noon is an ideal time because this is during off-peak travel hours. Flights to Liberia are more costly in the morning, with an average ticket price of $673. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Liberia?

You are more likely to see cheaper flights to Liberia from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Liberia for around $602 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Liberia from Portland for as low as $521 on momondo.

How have Portland to Liberia flight prices changed over time?

As of December 2025, prices for Portland to Liberia flights are approximately 17% more expensive when compared to flights at the same time last year.

When to book flights from Portland to Liberia

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

Cheap Portland to Liberia (PDX to LIR) flight deals and tips

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

Fastest flight time

8h 57m

Direct flights

None
The fastest flight from Portland to Liberia takes 8h 57m
There are no direct flights from Portland to Liberia. There are no popular flight routes from Portland to Liberia.
Search flight deals

  • How far is Portland to Liberia by plane?

    Portland and Liberia are 3256.6 mi apart from one another. 8h 57m is a normal flight duration for this route.

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

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

  • How many operators does momondo search for flights from Portland Airport to Liberia Airport?

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

    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 Airport.

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

    The travel and health documents you'll need for your trip to Liberia Airport 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 Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Portland to Liberia?

Best airlines flying from Portland to Liberia

Compare and see reviews for airlines that fly from Portland to Liberia with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $345Free CancellationRating
8.0
11,474 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $348Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
American AirlinesPriceFrom $353Free CancellationRating
7.2
11,053 reviews
Search American Airlines flights

Traveling to a place near Liberia?

Book flights to Liberia if you plan to visit one of these locations
Culebra
Playa Hermosa
Coco

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Liberia. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Liberia from Portland with this policy.

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

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 Liberia from Portland.

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

Of course. momondo tracks the price of Portland to Liberia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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