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Liberia

$202+ 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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIR
Jun 8 — Jun 151
Mon 6/8
Mon 6/15
1 adult, Economy
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Cheap 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 May 9, 2026.

This United Airlines deal was found by Cheapflights users on 5/8. 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 9/83:43 pm
PDX
-
LIR
2 stops19h 27m
United Airlines
Tue 9/151:20 pm
LIR
-
PDX
1 stop10h 31m
United Airlines
Deal found 5/8$450
This American Airlines deal was found by Cheapflights users on 5/6. 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 8/2911:20 pm
PDX
-
LIR
2 stops12h 51m
American Airlines
Sat 9/52:45 pm
LIR
-
PDX
2 stops21h 06m
American Airlines
Deal found 5/6$455
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Sat 5/2311:59 pm
PDX
-
LIR
1 stop8h 51m
United Airlines
Sun 5/318:30 am
LIR
-
PDX
1 stop15h 33m
United Airlines
Deal found 5/7$464
This American Airlines deal was found by Cheapflights users on 5/5. 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 12/51:45 pm
PDX
-
LIR
1 stop23h 00m
American Airlines
Mon 12/143:28 pm
LIR
-
PDX
2 stops21h 37m
American Airlines
Deal found 5/5$465
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Sat 9/126:57 pm
PDX
-
LIR
2 stops16h 13m
United Airlines
Sat 9/191:20 pm
LIR
-
PDX
2 stops21h 01m
United Airlines
Deal found 5/6$469
This Alaska Airlines deal was found by Cheapflights users on 5/8. 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.
Sat 8/89:27 pm
PDX
-
LIR
1 stop32h 10m
Alaska Airlines
Mon 8/176:39 pm
LIR
-
PDX
1 stop15h 42m
Alaska Airlines
Deal found 5/8$472
This United Airlines deal was found by Cheapflights users on 5/7. 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.
Sun 10/1811:55 pm
PDX
-
LIR
1 stop11h 15m
United Airlines
Sat 10/2411:49 am
LIR
-
PDX
1 stop10h 16m
United Airlines
Deal found 5/7$473
This American Airlines deal was found by Cheapflights users on 5/6. 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.
Wed 8/1911:20 pm
PDX
-
LIR
2 stops12h 51m
American Airlines
Mon 8/242:45 pm
LIR
-
PDX
2 stops21h 06m
American Airlines
Deal found 5/6$474
This American Airlines deal was found by Cheapflights users on 5/4. 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 5/1211:23 pm
PDX
-
LIR
2 stops12h 47m
American Airlines
Tue 5/192:40 pm
LIR
-
PDX
2 stops20h 40m
American Airlines
Deal found 5/4$495
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Sat 9/2611:55 pm
PDX
-
LIR
1 stop11h 15m
United Airlines
Sat 10/311:49 am
LIR
-
PDX
1 stop12h 03m
United Airlines
Deal found 5/6$496
This United Airlines deal was found by Cheapflights users on 5/5. 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.
Sun 10/255:15 am
PDX
-
LIR
1 stop8h 53m
United Airlines
Sun 11/19:30 am
LIR
-
PDX
1 stop11h 01m
United Airlines
Deal found 5/5$501

Find 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 May 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$450
(United Airlines)

One-way from

$202
(American Airlines)

Popular in

March

Cheapest in

September

Average price

$554
Provider with most accurate pricing for Portland-Liberia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Liberia flights.
Search Deals
From Portland to Liberia
Search Deals
One-way flight from Portland to Liberia
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 May 9, 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

Tue 9/8

3:43 pm-12:10 pm

2 stops19h 27m

Liberia

Tue 9/15

1:20 pm-10:51 pm

1 stop10h 31m

$450

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 8/8

9:27 pm-6:37 am

1 stop32h 10m

Liberia

Mon 8/17

6:39 pm-9:21 am

1 stop15h 42m

$472

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 5/24

1:17 pm-9:50 am

2 stops19h 33m

Liberia

Sun 5/31

8:30 am-12:50 am

1 stop17h 20m

$575
Quickest round-trip

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 10/30

5:15 am-3:08 pm

1 stop8h 53m

Liberia

Fri 11/6

8:35 am-10:38 pm

2 stops16h 03m

$575

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 5/23

5:15 am-9:50 am

3 stops27h 35m

Liberia

Sat 5/30

8:30 am-8:54 pm

1 stop13h 24m

$589

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 5/23

11:59 pm-9:50 am

1 stop8h 51m

Liberia

Sun 5/31

8:30 am-12:50 am

1 stop17h 20m

$644

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 6/29

11:59 pm-9:50 am

1 stop8h 51m

Liberia

Wed 7/22

3:27 pm-9:47 am

2 stops19h 20m

$649

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Wed 8/26

8:44 pm-12:00 pm

2 stops14h 16m

Liberia

Mon 8/31

1:25 pm-9:03 am

2 stops20h 38m

$681
Cheapest one-way

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 10/11

11:55 pm-12:10 pm

1 stop11h 15m

$202

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 8/17

9:27 pm-5:29 pm

1 stop19h 02m

$202

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/4

Showing 1-10 of 15 resultsSorted by cheapest first
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 May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Liberia flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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?

The best time to book flights from Portland to Liberia is 69 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 $444). Flying from Portland to Liberia in March is currently the most expensive (average of $678). 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.

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 May 9, 2026.
Read through reviews of airlines operating flights from Portland to Liberia, such as Alaska Airlines,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,349 reviews

Comfort

7.8

Overall

7.9

Food

7.0

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Alaska Airlines
7.9
Good
12,349 reviews
Alaska Airlines
7.9
Good
12,349 reviews

Comfort

7.8

Overall

7.9

Food

7.0

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
United Airlines
7.4
Good
9,694 reviews
Alaska Airlines
7.9
Good
12,349 reviews

Comfort

7.8

Overall

7.9

Food

7.0

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
American Airlines
7.1
Good
11,670 reviews
Alaska Airlines
7.9
Good
12,349 reviews

Comfort

7.8

Overall

7.9

Food

7.0

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

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 United Airlines and Alaska Airlines fly from Portland to Liberia in about 19h 27m. The time it takes to get you to your destination can typically vary by up to 12h 43m. 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, Alaska Airlines ($344), American Airlines ($344), and United Airlines ($348) offers the cheapest pricing from Portland to Liberia. Alaska Airlines is currently priced 38% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Portland to Liberia one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $140. Users have also found prices from $160 and $190 on United Airlines and Alaska Airlines, respectively.

  • 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 $444). Flying from Portland to Liberia in March is currently the most expensive (average of $678). 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 May 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$344Average$554FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$344Average$582FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$348Average$557FlexibilityNo cancel feeOn-time69%

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