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Cheap flights from Portland to Liberia from $157

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 2/8. 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
9:30 pm - 5:35 pmPDX-LIR
19h 05m1 stop
Alaska Airlines Logo
10:00 am - 8:35 pmLIR-PDX
11h 35m1 stop
$325Alaska Airlines
Find Deal
Mon, Mar 9 - Wed, Mar 11
Alaska Airlines Logo
9:30 pm - 5:28 pmPDX-LIR
18h 58m1 stop
Alaska Airlines Logo
11:20 am - 8:50 pmLIR-PDX
11h 30m1 stop
$331Alaska Airlines
Find Deal
Sun, Oct 19 - Tue, Nov 4
Alaska Airlines Logo
9:30 pm - 6:20 amPDX-LIR
31h 50m1 stop
Alaska Airlines Logo
11:20 am - 10:34 pmLIR-PDX
13h 14m1 stop
$334Alaska Airlines
Find Deal
Sat, Nov 1 - Fri, Nov 7
Delta Logo
5:10 pm - 12:50 pmPDX-LIR
17h 40m2 stops
Delta Logo
3:55 pm - 11:05 amLIR-PDX
21h 10m1 stop
$349Delta
Find Deal
Mon, Feb 23 - Thu, Mar 5
American Airlines Logo
11:59 pm - 12:59 pmPDX-LIR
12h 00m1 stop
American Airlines Logo
3:08 pm - 10:48 amLIR-PDX
21h 40m2 stops
$350American Airlines
Find Deal
Sun, Oct 19 - Tue, Nov 4
Delta Logo
1:00 pm - 2:30 pmPDX-LIR
23h 30m2 stops
Delta Logo
2:15 pm - 9:29 amLIR-PDX
21h 14m2 stops
$353Delta
Find Deal
Thu, Feb 26 - Wed, Mar 4
American Airlines Logo
10:45 pm - 12:21 pmPDX-LIR
11h 36m1 stop
American Airlines Logo
3:13 pm - 11:10 amLIR-PDX
21h 57m2 stops
$357American Airlines
Find Deal
Wed, Nov 12 - Mon, Nov 24
Multiple Airlines Logo
5:55 pm - 6:20 amPDX-LIR
10h 25m1 stop
Multiple Airlines Logo
4:55 pm - 11:49 amLIR-PDX
20h 54m1 stop
$374Multiple Airlines
Find Deal
Mon, Nov 10 - Sat, Nov 15
United Airlines Logo
5:00 am - 4:08 pmPDX-LIR
9h 08m1 stop
United Airlines Logo
8:35 am - 11:06 pmLIR-PDX
16h 31m2 stops
$381United Airlines
Find Deal
Mon, Jan 12 - Sun, Jan 25
United Airlines Logo
7:43 pm - 1:10 pmPDX-LIR
15h 27m2 stops
United Airlines Logo
8:35 am - 10:52 pmLIR-PDX
16h 17m2 stops
$428United Airlines
Find Deal
Thu, Dec 11 - Tue, Dec 16

Delta flights from Portland to Liberia

Our best Delta deals on Portland to Liberia flight tickets
Delta
Feb 23
PDX5:10 pmPortland
17h 40m
2 stops
LIR12:50 pmLiberia
Mar 5
LIR3:55 pmLiberia
21h 10m
1 stop
PDX11:05 amPortland
$349
Find similar
Delta
Feb 26
PDX1:00 pmPortland
23h 30m
2 stops
LIR2:30 pmLiberia
Mar 4
LIR2:15 pmLiberia
21h 14m
2 stops
PDX9:29 amPortland
$353
Find similar
Delta
Feb 15
PDX12:55 amPortland
10h 00m
1 stop
LIR12:55 pmLiberia
Feb 26
LIR3:55 pmLiberia
21h 10m
1 stop
PDX11:05 amPortland
$359
Find similar

United Airlines flights from Portland to Liberia

Our best United Airlines deals on Portland to Liberia flight tickets
United Airlines
Jan 12
PDX5:00 amPortland
9h 08m
1 stop
LIR4:08 pmLiberia
Jan 25
LIR8:35 amLiberia
16h 31m
2 stops
PDX11:06 pmPortland
$381
Find similar
United Airlines
Dec 11
PDX7:43 pmPortland
15h 27m
2 stops
LIR1:10 pmLiberia
Dec 16
LIR8:35 amLiberia
16h 17m
2 stops
PDX10:52 pmPortland
$428
Find similar
United Airlines
Dec 11
PDX7:43 pmPortland
15h 27m
2 stops
LIR1:10 pmLiberia
Dec 14
LIR9:30 amLiberia
11h 11m
1 stop
PDX6:41 pmPortland
$433
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 September 17, 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

Mon 3/9

9:30 pm-5:35 pm

1 stop19h 05m

Liberia

Wed 3/11

10:00 am-8:35 pm

1 stop11h 35m

$325

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 10/19

9:30 pm-5:28 pm

1 stop18h 58m

Liberia

Tue 11/4

11:20 am-8:50 pm

1 stop11h 30m

$331

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 11/1

9:30 pm-6:20 am

1 stop31h 50m

Liberia

Fri 11/7

11:20 am-10:34 pm

1 stop13h 14m

$334

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 2/23

5:10 pm-12:50 pm

2 stops17h 40m

Liberia

Thu 3/5

3:55 pm-11:05 am

1 stop21h 10m

$349

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sun 10/19

11:59 pm-12:59 pm

1 stop12h 00m

Liberia

Tue 11/4

3:08 pm-10:48 am

2 stops21h 40m

$350

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Thu 2/26

1:00 pm-2:30 pm

2 stops23h 30m

Liberia

Wed 3/4

2:15 pm-9:29 am

2 stops21h 14m

$353

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Wed 11/12

10:45 pm-12:21 pm

1 stop11h 36m

Liberia

Mon 11/24

3:13 pm-11:10 am

2 stops21h 57m

$357

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 11/10

5:55 pm-6:20 am

1 stop10h 25m

Liberia

Sat 11/15

4:55 pm-11:49 am

1 stop20h 54m

$374

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 1/12

5:00 am-4:08 pm

1 stop9h 08m

Liberia

Sun 1/25

8:35 am-11:06 pm

2 stops16h 31m

$381

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Thu 12/11

7:43 pm-1:10 pm

2 stops15h 27m

Liberia

Tue 12/16

8:35 am-10:52 pm

2 stops16h 17m

$428

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 January is another great option to travel to Liberia, with average flight prices from Portland averaging around $504.

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 $616 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 $491 on momondo.

Can stopping save me money on Portland to Liberia flights?

You could potentially save up to 17% on your flight if you consider stops on a Portland to Liberia flight.

How have Portland to Liberia flight prices changed over time?

As of September 2025, prices for Portland to Liberia flights are approximately 38% 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

Direct flights

None
There are no direct flights from Portland to Liberia. There are no popular flight routes from Portland to Liberia.
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  • How far is Portland to Liberia by plane?

    Portland and Liberia are 3256.6 mi apart from one another. 9h 05m 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
United AirlinesPriceFrom $403Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
American AirlinesPriceFrom $409Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $414Free 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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