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395 € Cheap Flights from Portland to Liberia

Compare Portland to Liberia flight deals

Find the cheapest month or even day of the year to fly to Liberia

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Flight deals from Portland to Liberia

Looking for a cheap last-minute deal or the best return flight from Portland Airport to Liberia Airport? If you want to travel next month, return fares start from 674 €. Find the lowest prices on one-way and return tickets right here.
Liberia.395 € per passenger.Departing Mon, 18 Jan, returning Thu, 28 Jan.Return flight with United.Outbound indirect flight with United, departs from Portland on Mon, 18 Jan, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Thu, 28 Jan, arriving in Portland.Price includes taxes and charges.From 395 €, select.
Liberia.414 € per passenger.Departing Sat, 24 Oct, returning Sat, 31 Oct.Return flight with United.Outbound indirect flight with United, departs from Portland on Sat, 24 Oct, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Sat, 31 Oct, arriving in Portland.Price includes taxes and charges.From 414 €, select.
Liberia.419 € per passenger.Departing Sat, 31 Oct, returning Sat, 7 Nov.Return flight with United.Outbound indirect flight with United, departs from Portland on Sat, 31 Oct, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Sat, 7 Nov, arriving in Portland.Price includes taxes and charges.From 419 €, select.
Liberia.436 € per passenger.Departing Fri, 27 Nov, returning Sun, 6 Dec.Return flight with United.Outbound indirect flight with United, departs from Portland on Fri, 27 Nov, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Sun, 6 Dec, arriving in Portland.Price includes taxes and charges.From 436 €, select.
Liberia.439 € per passenger.Departing Sun, 31 Jan, returning Sat, 6 Feb.Return flight with United.Outbound indirect flight with United, departs from Portland on Sun, 31 Jan, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Sat, 6 Feb, arriving in Portland.Price includes taxes and charges.From 439 €, select.
Liberia.481 € per passenger.Departing Sat, 29 Aug, returning Fri, 11 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Sat, 29 Aug, arriving in Liberia.Inbound indirect flight with Delta, departs from Liberia on Fri, 11 Sep, arriving in Portland.Price includes taxes and charges.From 481 €, select.
Liberia.539 € per passenger.Departing Thu, 4 Mar, returning Sun, 7 Mar.Return flight with United.Outbound indirect flight with United, departs from Portland on Thu, 4 Mar, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Sun, 7 Mar, arriving in Portland.Price includes taxes and charges.From 539 €, select.
Liberia.558 € per passenger.Departing Thu, 16 Jul, returning Thu, 23 Jul.Return flight with United.Outbound indirect flight with United, departs from Portland on Thu, 16 Jul, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Thu, 23 Jul, arriving in Portland.Price includes taxes and charges.From 558 €, select.
Liberia.595 € per passenger.Departing Mon, 7 Sep, returning Mon, 14 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Mon, 7 Sep, arriving in Liberia.Inbound indirect flight with Delta, departs from Liberia on Mon, 14 Sep, arriving in Portland.Price includes taxes and charges.From 595 €, select.
Liberia.627 € per passenger.Departing Mon, 14 Dec, returning Wed, 23 Dec.Return flight with Frontier Airlines and Alaska Airlines.Outbound indirect flight with Frontier Airlines, departs from Portland on Mon, 14 Dec, arriving in Liberia.Inbound indirect flight with Alaska Airlines, departs from Liberia on Wed, 23 Dec, arriving in Portland.Price includes taxes and charges.From 627 €, select.
Liberia.633 € per passenger.Departing Tue, 23 Feb, returning Sat, 6 Mar.Return flight with United.Outbound indirect flight with United, departs from Portland on Tue, 23 Feb, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Sat, 6 Mar, arriving in Portland.Price includes taxes and charges.From 633 €, select.
Liberia.674 € per passenger.Departing Fri, 21 Aug, returning Fri, 28 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Fri, 21 Aug, arriving in Liberia.Inbound indirect flight with Delta, departs from Liberia on Fri, 28 Aug, arriving in Portland.Price includes taxes and charges.From 674 €, select.
Liberia.883 € per passenger.Departing Sun, 14 Feb, returning Sat, 20 Feb.Return flight with United.Outbound indirect flight with United, departs from Portland on Sun, 14 Feb, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Sat, 20 Feb, arriving in Portland.Price includes taxes and charges.From 883 €, select.
Liberia.954 € per passenger.Departing Sat, 21 Nov, returning Sun, 29 Nov.Return flight with Alaska Airlines and WestJet.Outbound indirect flight with Alaska Airlines, departs from Portland on Sat, 21 Nov, arriving in Liberia.Inbound indirect flight with WestJet, departs from Liberia on Sun, 29 Nov, arriving in Portland.Price includes taxes and charges.From 954 €, select.
Liberia.1.215 € per passenger.Departing Sat, 19 Dec, returning Mon, 4 Jan.Return flight with Alaska Airlines and Air Transat.Outbound indirect flight with Alaska Airlines, departs from Portland on Sat, 19 Dec, arriving in Liberia.Inbound indirect flight with Air Transat, departs from Liberia on Mon, 4 Jan, arriving in Portland.Price includes taxes and charges.From 1.215 €, select.

Find the cheapest month to fly from Portland to Liberia

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to Liberia flights are currently cheapest in January.
Jul
from 558 €
Aug
from 674 €
Sep
from 595 €
Oct
from 414 €
Nov
from 954 €
Dec
from 627 €
Jan
from 395 €
Feb
from 883 €
Mar
from 539 €
Apr
Find prices
May
Find prices
Jun
Find prices

Portland to Liberia: Alternative routes

Compare routes from Portland to Liberia below. You may find an airport to fly into that's cheaper, faster, or easier than Liberia.

Liberia

13km from central Liberia
ClosestCheapest
from 395 €
Search flights

Tamarindo

54km from central Liberia
from 921 €
Search flights

Nosara Beach

76km from central Liberia
Search flights

Portland to Liberia: Flight information

The things to know before you go.
Cheapest flight found395 €
Cheapest month to flyJanuary

Finding cheap flights from Portland to Liberia: Frequently asked questions

The best price we found for a return flight from Portland to Liberia is 395 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Portland to Liberia. But we found flights with one or more stops from 395 €.
As of July 2026, there are no flights flying from Portland to Liberia.
The cheapest month to fly from Portland to Liberia is usually January.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to Liberia Airport on Monday, 18 January 2027.
No airlines currently offer direct flights between Portland Airport and Liberia Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Liberia but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Liberia is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, United offers the cheapest flight tickets to Liberia.

Flying from Portland Airport (PDX) to Liberia Airport (LIR): what you need to know

  • Liberia is two hours ahead of Portland and is in the UTC-6 timezone.

  • Your PDX to LIR flight won't wait if you're running late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.

  • You'll likely experience longer lines during popular months such as July. Arriving up to four hours in advance for international flights and two hours for a domestic departure will give you ample time for security and boarding.

  • Consider adding a stopover when booking your ticket from Portland Airport to Liberia Airport. Simply deselect 'Direct flights only' to break up your trip, or even explore someplace new along the way. Here's where you can stop between PDX and LIR:

    • Denver International Airport

    • Los Angeles International Airport

    • San Francisco International Airport

How to find the cheapest flights from Portland Airport (PDX) to Liberia Airport (LIR)

  • At the moment, 181 € is the cheapest price we've found for a one-way Portland Airport to Liberia Airport flight. The best price for a return ticket is 395 €. Bear in mind that fares can change due to availability when booking.

  • To find cheap tickets from PDX to LIR, book ahead. Airlines generally offer their most competitively priced fares when flights are first released.

  • If you're willing to be flexible with your travel plans, try using the 'Whole month' search function. It'll give you the lowest price across the month when searching for your flight from Portland Airport to Liberia Airport.

  • There's no need to check every day to find out if fares have dropped when you create a Price Alert. We'll send you an update as soon as the price changes on cheap flights from PDX to LIR.

  • Discover the perfect flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Portland Airport to Liberia Airport, use the 'Sort by' tool. You can also filter by airline, arrival and departure times, and journey duration.

Handy information about Portland Airport (PDX)

  • The address for PDX is 7000 NE Airport Way.

  • 83% of flights leaving Portland Airport arrive at their destination according to schedule. With its strong performance rating, you're unlikely to face delays when jetting out of PDX.

  • Central Portland to Portland Airport is around 19 kilometres. Depending on traffic, it'll take you about 20 minutes to get there if you're ride-sharing, catching a taxi or driving.

  • Taking public transport? You can expect a journey time of around 40 minutes.

  • Get your journey off to a relaxed start by staying near PDX. Whether you're catching an early flight from Portland Airport to Liberia Airport or want to avoid feeling rushed, these stays are ideal:

Arriving at Liberia Airport (LIR)

  • If you're arriving on a late Portland Airport to Liberia Airport flight, nothing tops the convenience of staying near the terminal. Grab your suitcases from the carousel and then be showered and relaxing soon after at one of these accommodation options near LIR:

  • Travel at your own speed with a Liberia Airport rental car. Pick up your wheels from Avis, Europcar or NU Car Rentals and chase adventure across Liberia and beyond.

  • To get the best deal, book your vehicle from Liberia Airport about two weeks before travelling.

Getting from Liberia Airport (LIR) to central Liberia

  • From Liberia Airport, Liberia is approximately 13 kilometres away. It takes around 20 minutes to get to the centre driving.

  • It takes around 30 minutes if you're using public transport.

When to fly to Liberia Airport (LIR)

  • The quietest month for a flight from Portland Airport to Liberia Airport is September, while April is the most popular. Choose the best time to go to Liberia based on whether you prefer a more fast-paced or easygoing experience.

  • Book your flight from Portland Airport to Liberia Airport for April if you want to explore Liberia during its warmest month. Expect temperatures of between 22ºC (72ºF) and 35ºC (95ºF).

  • January has average temperatures of between 21ºC (70ºF) and 32ºC (90ºF). Search for cheap tickets from PDX to LIR sometime around then if you want to travel in cooler conditions.

Explore more of Costa Rica

  • San Jose is just one of the many places in Costa Rica waiting to be discovered after you've seen Liberia. Around 161 kilometres away to the south-east, its top attractions include National Park (Parque Nacional), Central Park (Parque Central) and Precolumbian Gold Museum.

  • Around 274 kilometres east of Liberia, Limon is another favourite stop in Costa Rica. No visit is complete without checking out Veragua Rainforest Park, Playa Bonita and Playa Los Baños.

Plan the rest of your trip from Portland to Liberia

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.