Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Portland to Liberia from $202

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 5/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Portland to Liberia

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:40 pm - 1:40 pm
PDX
-
LIR
13h 00m
1 stop
American Airlines Logo
2:10 pm - 11:54 pm
LIR
-
PDX
10h 44m
1 stop
$436American Airlines
Sat, May 9 - Thu, May 14
American Airlines Logo
10:23 pm - 1:10 pm
PDX
-
LIR
13h 47m
2 stops
American Airlines Logo
2:40 pm - 10:20 am
LIR
-
PDX
20h 40m
2 stops
$441American Airlines
Sat, May 9 - Thu, May 14
Alaska Airlines Logo
9:30 pm - 5:45 pm
PDX
-
LIR
19h 15m
1 stop
Alaska Airlines Logo
10:00 am - 8:31 pm
LIR
-
PDX
11h 31m
1 stop
$450Alaska Airlines
Sun, Oct 4 - Thu, Oct 8
United Airlines Logo
5:00 am - 3:19 pm
PDX
-
LIR
9h 19m
1 stop
United Airlines Logo
2:20 pm - 9:40 am
LIR
-
PDX
21h 20m
2 stops
$455United Airlines
Mon, Aug 10 - Wed, Dec 16
Alaska Airlines Logo
9:27 pm - 5:29 pm
PDX
-
LIR
19h 02m
1 stop
Alaska Airlines Logo
6:39 pm - 9:21 am
LIR
-
PDX
15h 42m
1 stop
$464Alaska Airlines
Thu, Aug 13 - Mon, Aug 17
United Airlines Logo
5:00 am - 3:19 pm
PDX
-
LIR
9h 19m
1 stop
United Airlines Logo
8:35 am - 11:11 pm
LIR
-
PDX
16h 36m
1 stop
$474United Airlines
Mon, Aug 10 - Wed, Dec 16
American Airlines Logo
10:28 pm - 11:24 am
PDX
-
LIR
11h 56m
1 stop
American Airlines Logo
3:37 pm - 12:50 am
LIR
-
PDX
10h 13m
1 stop
$494American Airlines
Tue, May 12 - Sat, May 23
Alaska Airlines Logo
9:30 pm - 5:45 pm
PDX
-
LIR
19h 15m
1 stop
Alaska Airlines Logo
10:00 am - 8:31 pm
LIR
-
PDX
11h 31m
1 stop
$496Alaska Airlines
Tue, Oct 6 - Thu, Oct 8
Alaska Airlines Logo
7:00 am - 5:45 pm
PDX
-
LIR
9h 45m
1 stop
Alaska Airlines Logo
10:00 am - 11:54 pm
LIR
-
PDX
14h 54m
1 stop
$500Alaska Airlines
Sat, Oct 3 - Thu, Oct 15
American Airlines Logo
3:47 pm - 11:00 am
PDX
-
LIR
18h 13m
2 stops
American Airlines Logo
1:10 pm - 9:15 am
LIR
-
PDX
21h 05m
2 stops
$505American Airlines
Sat, Sep 12 - Sat, Sep 19

Alaska Airlines flights from Portland to Liberia

Our best Alaska Airlines deals on Portland to Liberia flight tickets
Alaska Airlines
Aug 13
PDX9:27 pmPortland
19h 02m
1 stop
LIR5:29 pmLiberia
Aug 17
LIR6:39 pmLiberia
15h 42m
1 stop
PDX9:21 amPortland
$464
Alaska Airlines
Oct 6
PDX9:30 pmPortland
19h 15m
1 stop
LIR5:45 pmLiberia
Oct 15
LIR10:00 amLiberia
14h 54m
1 stop
PDX11:54 pmPortland
$496
Alaska Airlines
Oct 3
PDX7:00 amPortland
9h 45m
1 stop
LIR5:45 pmLiberia
Oct 8
LIR10:00 amLiberia
11h 31m
1 stop
PDX8:31 pmPortland
$500

United Airlines flights from Portland to Liberia

Our best United Airlines deals on Portland to Liberia flight tickets
United Airlines
May 7
PDX11:59 pmPortland
11h 11m
1 stop
LIR12:10 pmLiberia
May 15
LIR1:20 pmLiberia
10h 39m
1 stop
PDX10:59 pmPortland
$450
United Airlines
Aug 10
PDX5:00 amPortland
9h 19m
1 stop
LIR3:19 pmLiberia
Dec 16
LIR2:20 pmLiberia
21h 20m
2 stops
PDX9:40 amPortland
$455
United Airlines
Aug 10
PDX5:00 amPortland
9h 19m
1 stop
LIR3:19 pmLiberia
Dec 16
LIR8:35 amLiberia
16h 36m
1 stop
PDX11:11 pmPortland
$474

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 April 24, 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

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 5/9

11:40 pm-1:40 pm

1 stop13h 00m

Liberia

Thu 5/14

2:10 pm-11:54 pm

1 stop10h 44m

$436

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 5/9

10:23 pm-1:10 pm

2 stops13h 47m

Liberia

Thu 5/14

2:40 pm-10:20 am

2 stops20h 40m

$441

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 10/4

9:30 pm-5:45 pm

1 stop19h 15m

Liberia

Thu 10/8

10:00 am-8:31 pm

1 stop11h 31m

$450

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 8/10

5:00 am-3:19 pm

1 stop9h 19m

Liberia

Wed 12/16

2:20 pm-9:40 am

2 stops21h 20m

$455

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Thu 8/13

9:27 pm-5:29 pm

1 stop19h 02m

Liberia

Mon 8/17

6:39 pm-9:21 am

1 stop15h 42m

$464

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 8/10

5:00 am-3:19 pm

1 stop9h 19m

Liberia

Wed 12/16

8:35 am-11:11 pm

1 stop16h 36m

$474
Quickest round-trip

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 5/12

10:28 pm-11:24 am

1 stop11h 56m

Liberia

Sat 5/23

3:37 pm-12:50 am

1 stop10h 13m

$494

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 10/6

9:30 pm-5:45 pm

1 stop19h 15m

Liberia

Thu 10/8

10:00 am-8:31 pm

1 stop11h 31m

$496

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 10/3

7:00 am-5:45 pm

1 stop9h 45m

Liberia

Thu 10/15

10:00 am-11:54 pm

1 stop14h 54m

$500

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 9/12

3:47 pm-11:00 am

2 stops18h 13m

Liberia

Sat 9/19

1:10 pm-9:15 am

2 stops21h 05m

$505

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 April is another great option to travel to Liberia, with average flight prices from Portland averaging around $485.

How far in advance should I book a flight from Portland 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 $562 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 $455 on momondo.

Can stopping save me money on Portland to Liberia flights?

You could potentially save up to 37% on your flight if you consider stops on a Portland to Liberia flight.

How have Portland to Liberia flight prices changed over time?

As of April 2026, prices for Portland to Liberia flights are approximately 17% cheaper 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

9h 19m

Direct flights

None
The fastest flight from Portland to Liberia takes 9h 19m
There are no direct flights from Portland to Liberia. There are no popular flight routes from Portland to Liberia.
Search flight deals

Frequently asked questions about flying from Portland to Liberia

  • How far is Portland to Liberia by plane?

    Portland and Liberia are 3256.6 mi apart from one another. 9h 19m 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 $344Free CancellationRating
7.9
12,279 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $344Free CancellationRating
7.1
11,664 reviews
Search American Airlines flights
United AirlinesPriceFrom $348Free CancellationRating
7.4
9,644 reviews
Search United 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.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 5/24
Sun 5/31
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Costa Rica