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$157+ Cheap flights from Portland (PDX) to Liberia (LIR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIR
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find cheap flights from Portland to Liberia with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Portland to Liberia are usually found in September or January, booked 58 days in advance, depart on a Sunday or Tuesday and return on a Monday

Cheap flight deals from Portland to Liberia

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Liberia (LIR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$337
(SmartFares)

One-way from

$157
(Delta)

Popular in

December

Cheapest in

September

Average price

$567
Provider with most accurate pricing for Portland-Liberia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Liberia flights.
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From Portland to Liberia
Search Deals
One-way flight from Portland to Liberia
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Portland to Liberia

Cheapest flights from Portland to Liberia
Explore the most affordable flight options available from Portland to Liberia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:59 pmPDX - LIR
2 stops16h 26mAmerican Airlines
Tue 12/91:25 pmLIR - PDX
1 stop12h 27mAmerican Airlines
Deal found 10/27$349
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:41 pmPDX - LIR
1 stop10h 39mAlaska Airlines
Thu 12/187:40 amLIR - PDX
1 stop15h 20mAlaska Airlines
Deal found 10/27$359
This Alaska Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/129:30 pmPDX - LIR
1 stop30h 50mAlaska Airlines
Thu 12/257:40 amLIR - PDX
1 stop18h 22mAlaska Airlines
Deal found 10/28$366
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:41 pmPDX - LIR
1 stop10h 39mAlaska Airlines
Sun 12/217:40 amLIR - PDX
1 stop16h 44mAlaska Airlines
Deal found 10/27$373
This Alaska Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/129:30 pmPDX - LIR
1 stop30h 50mAlaska Airlines
Tue 12/237:40 amLIR - PDX
1 stop18h 22mAlaska Airlines
Deal found 10/30$380
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/45:00 amPDX - LIR
1 stop9h 08mUnited Airlines
Wed 11/122:20 pmLIR - PDX
1 stop10h 25mUnited Airlines
Deal found 10/28$389
This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/810:15 pmPDX - LIR
2 stops13h 58mAmerican Airlines
Fri 11/143:13 pmLIR - PDX
2 stops21h 56mAmerican Airlines
Deal found 10/28$393
This Alaska Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:16 amPDX - LIR
1 stop8h 51mAlaska Airlines
Tue 12/169:00 amLIR - PDX
2 stops26h 28mAlaska Airlines
Deal found 10/28$418
This Alaska Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:41 pmPDX - LIR
1 stop10h 39mAlaska Airlines
Fri 12/197:07 pmLIR - PDX
1 stop16h 31mAlaska Airlines
Deal found 10/28$423
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/45:55 pmPDX - LIR
1 stop10h 25mAlaska Airlines
Fri 11/1411:20 amLIR - PDX
1 stop11h 30mAlaska Airlines
Deal found 10/28$425

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Portland to Liberia that are best for you.

Fly from

Portland

Fly to

Liberia

Route

Depart

Return

Price

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 1/20

7:24 am-6:01 pm

1 stop8h 37m

Liberia

Thu 1/29

11:20 am-8:34 pm

1 stop11h 14m

$345

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 1/20

10:15 pm-2:13 pm

2 stops13h 58m

Liberia

Thu 1/29

3:13 pm-11:22 am

2 stops22h 09m

$349

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 1/19

12:40 am-1:24 pm

1 stop10h 44m

Liberia

Thu 1/29

2:05 pm-12:04 pm

2 stops23h 59m

$349

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 12/12

5:41 pm-6:20 am

1 stop10h 39m

Liberia

Thu 12/25

7:40 am-12:02 am

1 stop18h 22m

$359

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 12/12

5:41 pm-6:20 am

1 stop10h 39m

Liberia

Sun 12/21

7:40 am-10:24 pm

1 stop16h 44m

$373

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 12/12

5:41 pm-6:20 am

1 stop10h 39m

Liberia

Thu 12/18

7:40 am-9:00 pm

1 stop15h 20m

$373

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 12/14

5:30 pm-12:40 pm

2 stops17h 10m

$157

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Thu 11/6

7:00 am-6:37 pm

1 stop9h 37m

$221

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 12/15

4:02 pm-6:37 pm

2 stops24h 35m

$231

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 11/10

7:00 am-6:37 pm

1 stop9h 37m

$256

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 13 results
1
2

Compare providers for flights from Portland to Liberia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Liberia in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Liberia flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland-Liberia flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland-Liberia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Liberia flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Liberia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Liberia

Have a flexible travel schedule? Discover the best time to fly to Liberia from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Liberia

How far ahead should I book a flight from Portland to Liberia?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Liberia. Price data was last updated on October 24, 2025.

The best time to book flights from Portland to Liberia is 42 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Portland to Liberia?

Currently, September is the cheapest month in which you can book a flight from Portland to Liberia (average of $275). Flying from Portland to Liberia in April is currently the most expensive (average of $456). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to LIR?

Find hourly flight availability from Portland to Liberia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

It’s optimal to fly from Portland to Liberia at noon. By choosing this option you can save up to 27% on the cost of your flight, compared to a flight in the morning.

How much does it cost to fly round-trip from Portland to Liberia?

Reviews of airlines servicing Liberia

Get insights into the airlines that provide service to Liberia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Liberia. Reviews last updated October 30, 2025.
Read through reviews of airlines operating flights from Portland to Liberia, such as Alaska Airlines, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,214 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,214 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,998 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,030 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from Portland to Liberia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portland to Liberia?

    Airlines like Alaska Airlines, American Airlines, and Delta fly from Portland to Liberia in about 8h 37m. The time it takes to get you to your destination can typically vary by up to 5h 21m. Airlines will cover a distance of 3254 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Portland to Liberia round-trip?

    According to our current data, United Airlines ($348), American Airlines ($353), and Alaska Airlines ($377) offers the cheapest pricing from Portland to Liberia. United Airlines is currently priced 43% below the average price you’ll pay for this route.

  • Can I find deals for flights from Portland to Liberia that include hotel bookings?

    Yes. In addition to deals on Portland to Liberia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Liberia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Liberia.

  • Can I find deals for business class flights from Portland to Liberia?

    Yes. Cheapflights offers flight deals from Portland to Liberia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Liberia?

    Currently, September is the cheapest month in which you can book a flight from Portland to Liberia (average of $275). Flying from Portland to Liberia in April is currently the most expensive (average of $456). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Liberia?

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

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Top 3 airlines flying from Portland to Liberia

Discover the top 3 airlines that operate flights from Portland to Liberia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$348Average$601FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$353Average$631FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$377Average$597FlexibilityNo cancel feeOn-time75%

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