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$141+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIR
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Liberia are usually found in January or September, booked 7 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 July 3, 2025.

Round-trip from

$313
(Alaska Airlines)

One-way from

$141
(United Airlines)

Popular in

March

Cheapest in

January

Average price

$589
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. 9% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/2. 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 8/119:30 pmPDX - LIR
1 stop17h 23mAlaska Airlines
Tue 8/194:58 pmLIR - PDX
1 stop17h 27mAlaska Airlines
Deal found 7/2$313
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/126:43 pmPDX - LIR
2 stops16h 27mUnited Airlines
Thu 8/211:20 pmLIR - PDX
2 stops12h 25mUnited Airlines
Deal found 7/1$317
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/1211:59 pmPDX - LIR
1 stop12h 00mAmerican Airlines
Thu 8/212:00 pmLIR - PDX
1 stop21h 43mAmerican Airlines
Deal found 7/1$321
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/127:35 pmPDX - LIR
2 stops16h 24mMultiple Airlines
Tue 8/192:00 pmLIR - PDX
2 stops21h 44mMultiple Airlines
Deal found 7/1$434

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 July 3, 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

Mon 8/11

9:30 pm-3:53 pm

1 stop17h 23m

Liberia

Tue 8/19

4:58 pm-9:25 am

1 stop17h 27m

$313

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 8/12

6:43 pm-12:10 pm

2 stops16h 27m

Liberia

Thu 8/21

1:20 pm-12:45 am

2 stops12h 25m

$317

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 8/12

11:59 pm-12:59 pm

1 stop12h 00m

Liberia

Thu 8/21

2:00 pm-10:43 am

1 stop21h 43m

$321

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 8/12

7:35 pm-12:59 pm

2 stops16h 24m

Liberia

Tue 8/19

2:00 pm-10:44 am

2 stops21h 44m

$434

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 8/11

11:59 pm-10:00 am

1 stop9h 01m

$141

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Wed 10/29

5:10 pm-11:47 am

2 stops17h 37m

$157

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Thu 8/14

9:30 pm-3:53 pm

1 stop17h 23m

$161

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 8/9

1:20 pm-12:59 pm

2 stops22h 39m

$162

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 7/11

4:37 pm-1:10 pm

3 stops19h 33m

$391

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 12/19

11:59 pm-2:48 pm

1 stop12h 49m

$725

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 11 results
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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 June 27, 2025.

The best time to book flights from Portland to Liberia is 7 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 July 3, 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 July 3, 2025.
Read through reviews of airlines operating flights from Portland to Liberia, such as Alaska Airlines, Delta, and United 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

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
WestJet
7.2
Good
2,917 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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.

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

    According to our current data, Alaska Airlines ($313), United Airlines ($317), and American Airlines ($321) offers the cheapest pricing from Portland to Liberia. Alaska Airlines is currently priced 50% 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 United Airlines. According to our data, you can fly for as low as $141. Users have also found prices from $157 and $161 on Delta 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, 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

Browse thousands of different options on Cheapflights for your next trip

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$429Average$609FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$439Average$635FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$467Average$652FlexibilityNo cancel feeOn-time71%

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