Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Portland to Liberia from $217

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 8/29. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Liberia

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
10:55 pm - 2:13 pm
PDX
-
LIR
13h 18m
2 stops
American Airlines Logo
3:13 pm - 11:45 am
LIR
-
PDX
22h 32m
2 stops
$471American Airlines
Sun, Jan 3 - Wed, Jan 13
American Airlines Logo
11:06 pm - 1:18 pm
PDX
-
LIR
13h 12m
2 stops
American Airlines Logo
2:47 pm - 1:17 pm
LIR
-
PDX
23h 30m
2 stops
$471American Airlines
Mon, Sep 21 - Fri, Sep 25
American Airlines Logo
11:08 pm - 1:18 pm
PDX
-
LIR
13h 10m
2 stops
American Airlines Logo
2:47 pm - 10:59 am
LIR
-
PDX
21h 12m
2 stops
$471American Airlines
Mon, Sep 21 - Fri, Sep 25
United Airlines Logo
11:30 pm - 11:53 am
PDX
-
LIR
11h 23m
1 stop
United Airlines Logo
11:50 am - 9:08 pm
LIR
-
PDX
10h 18m
1 stop
$480United Airlines
Fri, Oct 16 - Tue, Oct 27
United Airlines Logo
5:00 am - 4:10 pm
PDX
-
LIR
9h 10m
1 stop
United Airlines Logo
12:50 pm - 11:09 pm
LIR
-
PDX
12h 19m
1 stop
$480United Airlines
Fri, Nov 13 - Wed, Nov 18
United Airlines Logo
4:25 pm - 1:10 pm
PDX
-
LIR
18h 45m
2 stops
United Airlines Logo
2:20 pm - 11:15 pm
LIR
-
PDX
10h 55m
1 stop
$480United Airlines
Thu, Nov 12 - Wed, Nov 18
Alaska Airlines Logo
2:30 pm - 6:22 am
PDX
-
LIR
13h 52m
1 stop
Alaska Airlines Logo
11:22 am - 11:54 pm
LIR
-
PDX
14h 32m
1 stop
$520Alaska Airlines
Mon, Dec 7 - Wed, Dec 16
Alaska Airlines Logo
12:30 pm - 6:22 am
PDX
-
LIR
15h 52m
1 stop
Alaska Airlines Logo
8:32 am - 8:40 pm
LIR
-
PDX
14h 08m
1 stop
$520Alaska Airlines
Mon, Dec 7 - Thu, Dec 17
Delta Logo
10:05 pm - 3:25 pm
PDX
-
LIR
15h 20m
1 stop
Delta Logo
4:40 pm - 11:50 am
LIR
-
PDX
21h 10m
1 stop
$546Delta
Fri, Jan 8 - Sat, Jan 23
Delta Logo
9:45 pm - 2:20 pm
PDX
-
LIR
14h 35m
1 stop
Delta Logo
4:40 pm - 11:50 am
LIR
-
PDX
21h 10m
1 stop
$546Delta
Sun, Jan 10 - Sat, Jan 23

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

American Airlines flights from Portland to Liberia

Our best American Airlines deals on Portland to Liberia flight tickets
American Airlines
Jan 3
PDX10:55 pmPortland
13h 18m
2 stops
LIR2:13 pmLiberia
Jan 13
LIR3:13 pmLiberia
22h 32m
2 stops
PDX11:45 amPortland
$471
American Airlines
Jan 23
PDX6:22 pmPortland
18h 23m
2 stops
LIR2:45 pmLiberia
Jan 30
LIR2:14 pmLiberia
11h 45m
1 stop
PDX11:59 pmPortland
$485
American Airlines
Sep 11
PDX11:08 pmPortland
13h 10m
2 stops
LIR1:18 pmLiberia
Sep 15
LIR2:47 pmLiberia
29h 33m
2 stops
PDX7:20 pmPortland
$504

United Airlines flights from Portland to Liberia

Our best United Airlines deals on Portland to Liberia flight tickets
United Airlines
Nov 13
PDX5:00 amPortland
9h 10m
1 stop
LIR4:10 pmLiberia
Nov 18
LIR12:50 pmLiberia
12h 19m
1 stop
PDX11:09 pmPortland
$480
United Airlines
Nov 12
PDX4:25 pmPortland
21h 45m
1 stop
LIR4:10 pmLiberia
Nov 18
LIR2:20 pmLiberia
10h 55m
1 stop
PDX11:15 pmPortland
$489
United Airlines
Sep 25
PDX2:27 pmPortland
20h 26m
1 stop
LIR11:53 amLiberia
Oct 5
LIR1:20 pmLiberia
10h 01m
1 stop
PDX10:21 pmPortland
$494

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 July 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

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 1/3

10:55 pm-2:13 pm

2 stops13h 18m

Liberia

Wed 1/13

3:13 pm-11:45 am

2 stops22h 32m

$471

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 9/21

11:06 pm-1:18 pm

2 stops13h 12m

Liberia

Fri 9/25

2:47 pm-1:17 pm

2 stops23h 30m

$471

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 9/21

11:08 pm-1:18 pm

2 stops13h 10m

Liberia

Fri 9/25

2:47 pm-10:59 am

2 stops21h 12m

$471

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 10/16

11:30 pm-11:53 am

1 stop11h 23m

Liberia

Tue 10/27

11:50 am-9:08 pm

1 stop10h 18m

$480
Quickest round-trip

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 11/13

5:00 am-4:10 pm

1 stop9h 10m

Liberia

Wed 11/18

12:50 pm-11:09 pm

1 stop12h 19m

$480

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Thu 11/12

4:25 pm-1:10 pm

2 stops18h 45m

Liberia

Wed 11/18

2:20 pm-11:15 pm

1 stop10h 55m

$480

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 12/7

2:30 pm-6:22 am

1 stop13h 52m

Liberia

Wed 12/16

11:22 am-11:54 pm

1 stop14h 32m

$520

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 12/7

12:30 pm-6:22 am

1 stop15h 52m

Liberia

Thu 12/17

8:32 am-8:40 pm

1 stop14h 08m

$520

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 1/8

10:05 pm-3:25 pm

1 stop15h 20m

Liberia

Sat 1/23

4:40 pm-11:50 am

1 stop21h 10m

$546

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 1/10

9:45 pm-2:20 pm

1 stop14h 35m

Liberia

Sat 1/23

4:40 pm-11:50 am

1 stop21h 10m

$546

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?

Prices are currently low for flights on this route.

Typical prices usually range from $618 to $787.
The lowest price recently found on this route was $466.

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 $492.

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 $610 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 $462 on momondo.

Can stopping save me money on Portland to Liberia flights?

You could potentially save up to 22% 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 July 2026, prices for Portland to Liberia flights are approximately 7% 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 33m

Direct flights

None
The fastest flight from Portland to Liberia takes 8h 33m
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. 8h 33m 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
12,717 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $346Free CancellationRating
7.1
11,837 reviews
Search American Airlines flights
United AirlinesPriceFrom $358Free CancellationRating
7.4
10,042 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
Wed 8/26
Wed 9/2
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Costa Rica