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378 € 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 378 €. Find the lowest prices on one-way and return tickets right here.
Liberia.378 € per passenger.Departing Mon, 4 May, returning Thu, 7 May.Return flight with United.Outbound indirect flight with United, departs from Portland on Mon, 4 May, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Thu, 7 May, arriving in Portland.Price includes taxes and charges.From 378 €, select.
Liberia.390 € per passenger.Departing Tue, 3 Nov, returning Mon, 9 Nov.Return flight with United.Outbound indirect flight with United, departs from Portland on Tue, 3 Nov, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Mon, 9 Nov, arriving in Portland.Price includes taxes and charges.From 390 €, select.
Liberia.401 € per passenger.Departing Thu, 4 Feb, returning Thu, 11 Feb.Return flight with United.Outbound indirect flight with United, departs from Portland on Thu, 4 Feb, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Thu, 11 Feb, arriving in Portland.Price includes taxes and charges.From 401 €, select.
Liberia.402 € per passenger.Departing Fri, 25 Sep, returning Fri, 2 Oct.Return flight with United.Outbound indirect flight with United, departs from Portland on Fri, 25 Sep, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Fri, 2 Oct, arriving in Portland.Price includes taxes and charges.From 402 €, select.
Liberia.403 € per passenger.Departing Mon, 20 Jul, returning Tue, 28 Jul.Return flight with United.Outbound indirect flight with United, departs from Portland on Mon, 20 Jul, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Tue, 28 Jul, arriving in Portland.Price includes taxes and charges.From 403 €, select.
Liberia.403 € per passenger.Departing Mon, 25 May, returning Mon, 1 Jun.Return flight with United.Outbound indirect flight with United, departs from Portland on Mon, 25 May, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Mon, 1 Jun, arriving in Portland.Price includes taxes and charges.From 403 €, select.
Liberia.421 € per passenger.Departing Mon, 14 Dec, returning Wed, 23 Dec.Return flight with United.Outbound indirect flight with United, departs from Portland on Mon, 14 Dec, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Wed, 23 Dec, arriving in Portland.Price includes taxes and charges.From 421 €, select.
Liberia.481 € per passenger.Departing Sun, 19 Apr, returning Sat, 25 Apr.Return flight with United.Outbound indirect flight with United, departs from Portland on Sun, 19 Apr, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Sat, 25 Apr, arriving in Portland.Price includes taxes and charges.From 481 €, select.
Liberia.494 € per passenger.Departing Mon, 30 Nov, returning Mon, 7 Dec.Return flight with United.Outbound indirect flight with United, departs from Portland on Mon, 30 Nov, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Mon, 7 Dec, arriving in Portland.Price includes taxes and charges.From 494 €, select.
Liberia.502 € per passenger.Departing Thu, 8 Oct, returning Tue, 13 Oct.Return flight with United.Outbound indirect flight with United, departs from Portland on Thu, 8 Oct, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Tue, 13 Oct, arriving in Portland.Price includes taxes and charges.From 502 €, select.
Liberia.508 € per passenger.Departing Fri, 5 Jun, returning Fri, 12 Jun.Return flight with WestJet and Alaska Airlines.Outbound indirect flight with WestJet, departs from Portland on Fri, 5 Jun, arriving in Liberia.Inbound indirect flight with Alaska Airlines, departs from Liberia on Fri, 12 Jun, arriving in Portland.Price includes taxes and charges.From 508 €, select.
Liberia.580 € per passenger.Departing Thu, 17 Sep, returning Tue, 22 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Thu, 17 Sep, arriving in Liberia.Inbound indirect flight with Delta, departs from Liberia on Tue, 22 Sep, arriving in Portland.Price includes taxes and charges.From 580 €, select.
Liberia.583 € per passenger.Departing Sat, 27 Jun, returning Mon, 6 Jul.Return flight with United.Outbound indirect flight with United, departs from Portland on Sat, 27 Jun, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Mon, 6 Jul, arriving in Portland.Price includes taxes and charges.From 583 €, select.
Liberia.602 € per passenger.Departing Fri, 28 Aug, returning Tue, 8 Sep.Return flight with United.Outbound indirect flight with United, departs from Portland on Fri, 28 Aug, arriving in Liberia.Inbound indirect flight with United, departs from Liberia on Tue, 8 Sep, arriving in Portland.Price includes taxes and charges.From 602 €, 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 May.
Apr
from 481 €
May
from 378 €
Jun
from 508 €
Jul
from 403 €
Aug
Find prices
Sep
from 580 €
Oct
from 502 €
Nov
from 390 €
Dec
from 421 €
Jan
Find prices
Feb
from 401 €
Mar
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 378 €
Search flights

Tamarindo

54km from central Liberia
from 633 €
Search flights

Nosara Beach

76km from central Liberia
Search flights

Portland to Liberia: Flight information

The things to know before you go.
Cheapest flight found378 €
Cheapest month to flyMay

Finding cheap flights from Portland to Liberia: Frequently asked questions

The best price we found for a return flight from Portland to Liberia is 378 €. 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 378 €.
As of April 2026, there are no flights flying from Portland to Liberia.
The cheapest month to fly from Portland to Liberia is usually May.
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, 4 May 2026.
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 International Airport (PDX) to Liberia Airport (LIR): what you need to know

  • Liberia is one hour ahead of Portland and observes the UTC-6 timezone.

  • Get to the airport on time so you don't miss your PDX to LIR flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid a last-minute sprint to the gate.

  • You can expect longer queues during popular months such as July. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a good idea.

  • We make it a cinch to book a flight with a stopover. To see your options for tickets from Portland International Airport to Liberia Airport, deselect 'Direct flights only.' Then, choose a flight offering a stop long enough to explore your chosen city. Worthwhile stopovers between PDX and LIR include:

    • Denver International Airport

    • Los Angeles International Airport

    • San Francisco International Airport

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

  • 181 € is currently the lowest price for a one-way Portland International Airport to Liberia Airport flight. Return flights start at 378 €. These fares can change based on demand.

  • Don't leave things to the last moment. You're more likely to find cheap tickets from PDX to LIR if you book early. Airlines often have some excellent early bird discounts.

  • The 'Whole month' search function shows you the cheapest flights from Portland International Airport to Liberia Airport throughout the month. It's a great way to snap up a bargain if your travel dates are flexible.

  • There's no need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll send you an update the moment a special offer becomes available on cheap flights from PDX to LIR.

  • Choose your ideal arrival and departure times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to get the best deals on flights from Portland International Airport to Liberia Airport.

Handy information about Portland International Airport (PDX)

  • PDX is located at 7000 NE Airport Way.

  • Portland International Airport scores top marks for on-time performance. 83.65% of flights that take off from PDX arrive at their destination as scheduled.

  • To reach Portland International Airport from central Portland, it'll take around 20 minutes by car. Of course, this depends on traffic. It's approximately 19 kilometres from the airport to the city centre.

  • The trip when using public transport will take about 45 minutes.

  • Searching for a convenient hotel close to PDX? If you're boarding an early flight from Portland International Airport to Liberia Airport, these stays will have you moments from your departure lounge:

Arriving at Liberia Airport (LIR)

Getting from Liberia Airport (LIR) to central Liberia

  • From Liberia Airport, Liberia is approximately 13 kilometres away. It takes around 20 minutes to reach the centre by car.

When to fly to Liberia Airport (LIR)

  • The quietest month for a flight from Portland International Airport to Liberia Airport is May, while January is the busiest. Pick the best time to go to Liberia based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • The warmest month in Liberia is April, with temperatures ranging between 22ºC (72ºF) and 35ºC (95ºF). Lock in your flights from Portland International Airport to Liberia Airport in this month if this is the kind of weather you like.

  • Look for cheap tickets from PDX to LIR in November if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 21ºC (70ºF) and 30ºC (86ºF) on average.

Explore more of Costa Rica

  • San Jose is just one of the many places in Costa Rica waiting to be discovered once you've seen Liberia. Around 161 kilometres away to the south-east, well-known attractions include Teatro Nacional Costa Rica, National Park (Parque Nacional) and Plaza de la Cultura.

  • Limon is another must-experience destination in Costa Rica and is around 274 kilometres east of Liberia. No journey is complete without dropping by Veragua Rainforest Park, Playa Bonita and Cruise Pier Puerto Limon.

Plan the rest of your trip from Portland to Liberia

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.