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Liberia

$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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIR
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Liberia are usually found in September or January, booked 43 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 September 16, 2025.

Round-trip from

$325
(SmartFares)

One-way from

$157
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$455
From Portland to Liberia
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One-way flight from Portland to Liberia
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Highest demand for flights based on searches. 3% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 16, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 11/102:50 pmPDX - LIR
1 stop13h 30mAlaska Airlines
Thu 11/1311:20 amLIR - PDX
1 stop11h 30mAlaska Airlines
Deal found 9/15$345
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Fri 12/1211:59 pmPDX - LIR
1 stop10h 56mUnited Airlines
Thu 12/2512:50 pmLIR - PDX
1 stop12h 09mUnited Airlines
Deal found 9/15$349
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Sun 11/99:30 pmPDX - LIR
1 stop30h 50mAlaska Airlines
Thu 11/1311:20 amLIR - PDX
1 stop13h 14mAlaska Airlines
Deal found 9/15$352
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/17:30 amPDX - LIR
1 stop11h 01mUnited Airlines
Sat 11/88:35 amLIR - PDX
2 stops16h 16mUnited Airlines
Deal found 9/15$353
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 12/124:32 pmPDX - LIR
1 stop22h 41mAlaska Airlines
Tue 12/169:00 amLIR - PDX
1 stop13h 21mAlaska Airlines
Deal found 9/16$355
This American Airlines deal was found by Cheapflights users on 9/14. 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 11/1210:45 pmPDX - LIR
1 stop13h 28mAmerican Airlines
Mon 11/243:13 pmLIR - PDX
2 stops21h 57mAmerican Airlines
Deal found 9/14$357
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Fri 12/122:07 pmPDX - LIR
1 stop22h 12mAmerican Airlines
Thu 12/251:21 pmLIR - PDX
1 stop13h 38mAmerican Airlines
Deal found 9/15$358
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Fri 12/122:07 pmPDX - LIR
1 stop22h 12mAmerican Airlines
Tue 12/161:25 pmLIR - PDX
2 stops23h 39mAmerican Airlines
Deal found 9/16$362
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 12/124:32 pmPDX - LIR
1 stop22h 41mAlaska Airlines
Sun 12/217:07 pmLIR - PDX
1 stop29h 17mAlaska Airlines
Deal found 9/15$366
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Mon 11/105:55 pmPDX - LIR
1 stop10h 25mMultiple Airlines
Sat 11/154:55 pmLIR - PDX
1 stop20h 54mMultiple Airlines
Deal found 9/15$374
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 12/105:00 amPDX - LIR
1 stop9h 08mUnited Airlines
Wed 12/178:35 amLIR - PDX
1 stop16h 24mUnited Airlines
Deal found 9/14$386
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 11/117:00 amPDX - LIR
2 stops21h 20mAlaska Airlines
Fri 11/1411:20 amLIR - PDX
1 stop13h 14mAlaska Airlines
Deal found 9/15$397

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 September 16, 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

Wed 12/10

5:00 am-4:08 pm

1 stop9h 08m

Liberia

Wed 12/17

8:35 am-10:52 pm

2 stops16h 17m

$345

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 11/8

10:45 pm-2:13 pm

1 stop13h 28m

Liberia

Fri 11/14

1:21 pm-11:31 pm

1 stop12h 10m

$345

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 11/10

5:55 pm-6:20 am

1 stop10h 25m

Liberia

Wed 11/12

11:20 am-8:50 pm

1 stop11h 30m

$345

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 12/2

5:00 am-4:08 pm

1 stop9h 08m

Liberia

Tue 12/9

8:35 am-10:57 pm

1 stop16h 22m

$345

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Thu 12/11

5:00 am-4:08 pm

1 stop9h 08m

Liberia

Tue 12/16

8:35 am-10:52 pm

2 stops16h 17m

$349

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 12/12

11:59 pm-12:55 pm

1 stop10h 56m

Liberia

Thu 12/25

12:50 pm-10:59 pm

1 stop12h 09m

$349

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 11/1

7:30 am-7:31 pm

1 stop11h 01m

Liberia

Sat 11/8

8:35 am-10:51 pm

2 stops16h 16m

$353

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 10/24

11:55 pm-12:10 pm

1 stop11h 15m

Liberia

Fri 10/31

7:35 am-10:45 pm

1 stop16h 10m

$353

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 12/12

4:32 pm-5:13 pm

1 stop22h 41m

Liberia

Tue 12/16

9:00 am-8:21 pm

1 stop13h 21m

$355

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 10/5

9:30 pm-5:28 pm

1 stop18h 58m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 17 results
1
2

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 September 12, 2025.

The best time to book flights from Portland to Liberia is 43 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, October is the cheapest month in which you can book a flight from Portland to Liberia (average of $496). Flying from Portland to Liberia in March is currently the most expensive (average of $710). 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 September 16, 2025.

It’s optimal to fly from Portland to Liberia at noon. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the morning.

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 September 16, 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
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,924 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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, American Airlines, and Alaska Airlines fly from Portland to Liberia in about 9h 08m. The time it takes to get you to your destination can typically vary by up to 4h 20m. 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 ($403), American Airlines ($409), and Alaska Airlines ($414) offers the cheapest pricing from Portland to Liberia. United Airlines is currently priced 34% 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 Alaska Airlines. According to our data, you can fly for as low as $157. Users have also found prices from $162 and $191 on Delta and United 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, October is the cheapest month in which you can book a flight from Portland to Liberia (average of $496). Flying from Portland to Liberia in March is currently the most expensive (average of $710). 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$403Average$624FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$409Average$649FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$414Average$591FlexibilityNo cancel feeOn-time75%

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