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Cheap flights from Portland to Liberia from $135

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Liberia departing on 9/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland to Liberia

Cheap round-trip flights

Alaska Airlines Logo
10:30 am - 6:20 amPDX-LIR
18h 50m1 stop
Alaska Airlines Logo
11:20 am - 8:30 pmLIR-PDX
10h 10m1 stop
$313Alaska Airlines
Find Deal
Wed, Sep 17 - Thu, Sep 25
American Airlines Logo
9:56 pm - 11:49 amPDX-LIR
12h 53m2 stops
American Airlines Logo
2:02 pm - 9:55 amLIR-PDX
20h 53m2 stops
$337American Airlines
Find Deal
Sat, Sep 27 - Sat, Oct 4
United Airlines Logo
7:00 am - 6:37 pmPDX-LIR
9h 37m1 stop
United Airlines Logo
8:35 am - 10:52 pmLIR-PDX
16h 17m2 stops
$345United Airlines
Find Deal
Wed, Dec 10 - Tue, Dec 16
American Airlines Logo
10:45 pm - 12:16 pmPDX-LIR
11h 31m1 stop
American Airlines Logo
3:08 pm - 10:58 amLIR-PDX
21h 50m2 stops
$349American Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
American Airlines Logo
9:00 am - 1:01 pmPDX-LIR
27h 01m1 stop
American Airlines Logo
2:02 pm - 6:55 pmLIR-PDX
29h 53m1 stop
$350American Airlines
Find Deal
Sat, Sep 27 - Sat, Oct 4
Alaska Airlines Logo
2:50 pm - 6:20 amPDX-LIR
14h 30m1 stop
Alaska Airlines Logo
10:00 am - 11:24 pmLIR-PDX
14h 24m1 stop
$353Alaska Airlines
Find Deal
Fri, Sep 26 - Sat, Oct 4
American Airlines Logo
9:56 pm - 11:49 amPDX-LIR
12h 53m2 stops
American Airlines Logo
12:25 pm - 9:55 amLIR-PDX
22h 30m2 stops
$357American Airlines
Find Deal
Fri, Sep 26 - Sat, Oct 4
United Airlines Logo
5:00 am - 4:08 pmPDX-LIR
9h 08m1 stop
United Airlines Logo
8:35 am - 10:52 pmLIR-PDX
16h 17m2 stops
$359United Airlines
Find Deal
Thu, Dec 11 - Tue, Dec 16
Delta Logo
9:45 pm - 12:50 pmPDX-LIR
13h 05m1 stop
Delta Logo
3:55 pm - 1:14 pmLIR-PDX
23h 19m2 stops
$363Delta
Find Deal
Fri, Jan 9 - Fri, Jan 16
Delta Logo
9:45 pm - 12:43 pmPDX-LIR
12h 58m1 stop
Delta Logo
2:10 pm - 9:04 amLIR-PDX
20h 54m2 stops
$409Delta
Find Deal
Wed, Nov 12 - Tue, Nov 18

Alaska Airlines flights from Portland to Liberia

Our best Alaska Airlines deals on Portland to Liberia flight tickets
Alaska Airlines
Sep 17
PDX10:30 amPortland
18h 50m
1 stop
LIR6:20 amLiberia
Sep 25
LIR11:20 amLiberia
10h 10m
1 stop
PDX8:30 pmPortland
$313
Find similar
Alaska Airlines
Sep 26
PDX2:50 pmPortland
14h 30m
1 stop
LIR6:20 amLiberia
Oct 4
LIR10:00 amLiberia
14h 24m
1 stop
PDX11:24 pmPortland
$353
Find similar
Alaska Airlines
Sep 17
PDX5:30 pmPortland
11h 50m
2 stops
LIR6:20 amLiberia
Sep 25
LIR11:20 amLiberia
10h 10m
1 stop
PDX8:30 pmPortland
$369
Find similar

American Airlines flights from Portland to Liberia

Our best American Airlines deals on Portland to Liberia flight tickets
American Airlines
Sep 27
PDX9:56 pmPortland
12h 53m
2 stops
LIR11:49 amLiberia
Oct 4
LIR2:02 pmLiberia
20h 53m
2 stops
PDX9:55 amPortland
$337
Find similar
American Airlines
Nov 11
PDX10:45 pmPortland
11h 31m
1 stop
LIR12:16 pmLiberia
Nov 18
LIR3:08 pmLiberia
21h 50m
2 stops
PDX10:58 amPortland
$349
Find similar
American Airlines
Sep 27
PDX9:00 amPortland
27h 01m
1 stop
LIR1:01 pmLiberia
Oct 4
LIR2:02 pmLiberia
29h 53m
1 stop
PDX6:55 pmPortland
$350
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated July 31, 2025.
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

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Wed 9/17

10:30 am-6:20 am

1 stop18h 50m

Liberia

Thu 9/25

11:20 am-8:30 pm

1 stop10h 10m

$313

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 9/27

9:56 pm-11:49 am

2 stops12h 53m

Liberia

Sat 10/4

2:02 pm-9:55 am

2 stops20h 53m

$337

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Wed 12/10

7:00 am-6:37 pm

1 stop9h 37m

Liberia

Tue 12/16

8:35 am-10:52 pm

2 stops16h 17m

$345

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 11/11

10:45 pm-12:16 pm

1 stop11h 31m

Liberia

Tue 11/18

3:08 pm-10:58 am

2 stops21h 50m

$349

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 9/27

9:00 am-1:01 pm

1 stop27h 01m

Liberia

Sat 10/4

2:02 pm-6:55 pm

1 stop29h 53m

$350

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 9/26

2:50 pm-6:20 am

1 stop14h 30m

Liberia

Sat 10/4

10:00 am-11:24 pm

1 stop14h 24m

$353

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 9/26

9:56 pm-11:49 am

2 stops12h 53m

Liberia

Sat 10/4

12:25 pm-9:55 am

2 stops22h 30m

$357

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

$359

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Fri 1/9

9:45 pm-12:50 pm

1 stop13h 05m

Liberia

Fri 1/16

3:55 pm-1:14 pm

2 stops23h 19m

$363

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Wed 11/12

9:45 pm-12:43 pm

1 stop12h 58m

Liberia

Tue 11/18

2:10 pm-9:04 am

2 stops20h 54m

$409

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Liberia from

How to get the cheapest flight ticket from Portland to Liberia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Liberia?

The month of October is another great option to travel to Liberia, with average flight prices from Portland averaging around $537.

What is the cheapest day to depart on your flight to Liberia?

On average, the least expensive day to fly to Liberia from Portland is on a Sunday. momondo users have found tickets for Sunday departures for as low as $611. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Liberia for around $696.

What is the cheapest time of day to depart on your flight to Liberia?

At noon is the cheapest time of day to fly from Portland to Liberia when you can find flight prices for as low as $490. Flying to Liberia at noon is an ideal time because this is during off-peak travel hours. Flights to Liberia are more costly in the morning, with an average ticket price of $673. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Liberia?

You are more likely to see cheaper flights to Liberia from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Liberia for around $622 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Liberia from Portland for as low as $509 on momondo.

How have Portland to Liberia flight prices changed over time?

As of July 2025, prices for Portland to Liberia flights are approximately 27% cheaper when compared to flights at the same time last year.

When to book flights from Portland to Liberia

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Liberia according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Liberia (PDX to LIR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Liberia

Best Price Found

$135

Fastest flight time

9h 08m

Direct flights

None

Airports in Liberia

1 airport
The best one-way flight to Liberia from Portland in the past 72 hours is $135. The best round-trip flight deal from Portland to Liberia found on momondo in the last 72 hours is $313.
The fastest flight from Portland to Liberia takes 9h 08m
There are no direct flights from Portland to Liberia. Popular non-direct route for this connection is Portland Airport - Liberia Airport.
There is 1 airport near Liberia: Liberia (LIR)
Search flight deals

  • How far is Portland to Liberia by plane?

    Portland and Liberia are 3256.6 mi apart from one another. 9h 08m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Portland Airport to Liberia Airport?

    Prices for flights from Portland Airport to Liberia Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Portland Airport to Liberia Airport?

  • How old do you have to be to fly from Portland Airport to Liberia Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Liberia Airport.

  • What documentation or ID do you need to fly to Liberia Airport?

    The travel and health documents you'll need for your trip to Liberia Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Liberia Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Portland to Liberia?

Best airlines flying from Portland to Liberia

Compare and see reviews for airlines that fly from Portland to Liberia with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $409Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $421Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $429Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

Traveling to a place near Liberia?

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

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Liberia?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Liberia. momondo saves you time and could save you money on your trip.

Can I find flights from Portland to Liberia with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Liberia from Portland with this policy.

How can momondo help me find flights from Portland to Liberia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Liberia from Portland.

I’m not ready to book a flight from Portland to Liberia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to Liberia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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