Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Liberia from $142

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Liberia departing on 12/9. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Liberia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:00 am - 2:30 pmSTL-LIR
8h 30m1 stop
Delta Logo
3:55 pm - 11:40 pmLIR-STL
7h 45m1 stop
$305Delta
Find Deal
Tue, Jan 6 - Fri, Jan 16
American Airlines Logo
5:59 pm - 12:21 pmSTL-LIR
18h 22m2 stops
American Airlines Logo
3:13 pm - 11:03 amLIR-STL
19h 50m2 stops
$309American Airlines
Find Deal
Mon, Feb 2 - Tue, Feb 10
Delta Logo
7:05 pm - 11:25 amSTL-LIR
16h 20m1 stop
Delta Logo
2:20 pm - 11:10 pmLIR-STL
8h 50m1 stop
$310Delta
Find Deal
Fri, Jan 9 - Tue, Jan 13
Delta Logo
5:30 pm - 11:15 amSTL-LIR
17h 45m2 stops
Delta Logo
3:55 pm - 11:40 pmLIR-STL
7h 45m1 stop
$314Delta
Find Deal
Fri, Jan 9 - Fri, Jan 16
Delta Logo
6:00 am - 2:30 pmSTL-LIR
8h 30m1 stop
Delta Logo
3:55 pm - 9:04 amLIR-STL
17h 09m1 stop
$315Delta
Find Deal
Tue, Mar 3 - Thu, Mar 5
Delta Logo
5:30 pm - 11:15 amSTL-LIR
17h 45m2 stops
Delta Logo
2:20 pm - 11:10 pmLIR-STL
8h 50m1 stop
$319Delta
Find Deal
Fri, Jan 9 - Mon, Jan 12
American Airlines Logo
6:43 pm - 1:37 pmSTL-LIR
18h 54m1 stop
American Airlines Logo
1:33 pm - 9:40 amLIR-STL
20h 07m2 stops
$320American Airlines
Find Deal
Sat, Jan 17 - Sat, Jan 24
Air Canada Logo
4:05 pm - 2:45 pmSTL-LIR
22h 40m1 stop
Air Canada Logo
3:45 pm - 3:29 pmLIR-STL
23h 44m1 stop
$401Air Canada
Find Deal
Sat, Nov 29 - Fri, Dec 5
United Airlines Logo
10:07 am - 6:37 pmSTL-LIR
8h 30m1 stop
United Airlines Logo
8:35 am - 12:29 pmLIR-STL
27h 54m2 stops
$419United Airlines
Find Deal
Tue, Jan 6 - Fri, Jan 16
United Airlines Logo
6:00 am - 6:37 pmSTL-LIR
12h 37m1 stop
United Airlines Logo
8:35 am - 12:29 pmLIR-STL
27h 54m2 stops
$424United Airlines
Find Deal
Sat, Jan 10 - Fri, Jan 16

American Airlines flights from St. Louis to Liberia

Our best American Airlines deals on St. Louis to Liberia flight tickets
American Airlines
Feb 2
STL5:59 pmLambert-St Louis
18h 22m
2 stops
LIR12:21 pmLiberia
Feb 10
LIR3:13 pmLiberia
19h 50m
2 stops
STL11:03 amLambert-St Louis
$309
Find similar
American Airlines
Jan 17
STL6:43 pmLambert-St Louis
18h 54m
1 stop
LIR1:37 pmLiberia
Jan 24
LIR1:33 pmLiberia
20h 07m
2 stops
STL9:40 amLambert-St Louis
$320
Find similar
American Airlines
Oct 18
STL4:25 pmLambert-St Louis
20h 20m
2 stops
LIR11:45 amLiberia
Oct 21
LIR12:45 pmLiberia
19h 08m
2 stops
STL8:53 amLambert-St Louis
$336
Find similar

United Airlines flights from St. Louis to Liberia

Our best United Airlines deals on St. Louis to Liberia flight tickets
United Airlines
Jan 6
STL10:07 amLambert-St Louis
8h 30m
1 stop
LIR6:37 pmLiberia
Jan 16
LIR8:35 amLiberia
27h 54m
2 stops
STL12:29 pmLambert-St Louis
$419
Find similar
United Airlines
Jan 10
STL6:00 amLambert-St Louis
12h 37m
1 stop
LIR6:37 pmLiberia
Jan 16
LIR8:35 amLiberia
27h 54m
2 stops
STL12:29 pmLambert-St Louis
$424
Find similar
United Airlines
Mar 3
STL6:45 amLambert-St Louis
11h 52m
2 stops
LIR6:37 pmLiberia
Mar 5
LIR8:50 amLiberia
27h 30m
2 stops
STL12:20 pmLambert-St Louis
$429
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis 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 October 2, 2025.
Use the filters below to find and compare flights from St. Louis to Liberia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Tue 1/6

6:00 am-2:30 pm

1 stop8h 30m

Liberia

Fri 1/16

3:55 pm-11:40 pm

1 stop7h 45m

$305

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Mon 2/2

5:59 pm-12:21 pm

2 stops18h 22m

Liberia

Tue 2/10

3:13 pm-11:03 am

2 stops19h 50m

$309

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Fri 1/9

7:05 pm-11:25 am

1 stop16h 20m

Liberia

Tue 1/13

2:20 pm-11:10 pm

1 stop8h 50m

$310

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Fri 1/9

5:30 pm-11:15 am

2 stops17h 45m

Liberia

Fri 1/16

3:55 pm-11:40 pm

1 stop7h 45m

$314

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Tue 3/3

6:00 am-2:30 pm

1 stop8h 30m

Liberia

Thu 3/5

3:55 pm-9:04 am

1 stop17h 09m

$315

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Fri 1/9

5:30 pm-11:15 am

2 stops17h 45m

Liberia

Mon 1/12

2:20 pm-11:10 pm

1 stop8h 50m

$319

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Sat 1/17

6:43 pm-1:37 pm

1 stop18h 54m

Liberia

Sat 1/24

1:33 pm-9:40 am

2 stops20h 07m

$320

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Sat 11/29

4:05 pm-2:45 pm

1 stop22h 40m

Liberia

Fri 12/5

3:45 pm-3:29 pm

1 stop23h 44m

$401

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Tue 1/6

10:07 am-6:37 pm

1 stop8h 30m

Liberia

Fri 1/16

8:35 am-12:29 pm

2 stops27h 54m

$419

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

Sat 1/10

6:00 am-6:37 pm

1 stop12h 37m

Liberia

Fri 1/16

8:35 am-12:29 pm

2 stops27h 54m

$424

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Liberia from

How to get the cheapest flight ticket from St. Louis 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 typical price of a round-trip flight between St. Louis and Liberia?

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 St. Louis averaging around $406.

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

On average, the least expensive day to fly to Liberia from St. Louis is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $580. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Liberia for around $726.

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

In the afternoon is the cheapest time of day to fly from St. Louis to Liberia when you can find flight prices for as low as $552. Flying to Liberia in the afternoon 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 $611. 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 St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Liberia for around $564 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Liberia from St. Louis for as low as $369 on momondo.

When to book flights from St. Louis to Liberia

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

Cheap St. Louis to Liberia (STL to LIR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Liberia

Direct flights

None
There are no direct flights from St. Louis to Liberia. There are no popular flight routes from St. Louis to Liberia.
Search flight deals

  • How far is Lambert-St Louis to Liberia by plane?

    The straight-line distance from Lambert-St Louis to Liberia is 1954.9 mi. Flights usually cover this in 5h 46m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Liberia Airport?

    Prices for flights from Lambert-St Louis Airport to Liberia Airport were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Liberia Airport?

  • How old do you have to be to fly from Lambert-St Louis 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 Lambert-St Louis 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 St. Louis to Liberia?

Best airlines flying from St. Louis to Liberia

Compare and see reviews for airlines that fly from St. Louis to Liberia with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $294Free CancellationRating
7.9
7,962 reviews
Search Delta flights
United AirlinesPriceFrom $334Free CancellationRating
7.4
8,933 reviews
Search United Airlines flights
American AirlinesPriceFrom $350Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $425Free CancellationRating
8.0
4,248 reviews
Search Southwest 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 St. Louis to Liberia?

It is quick and easy to find St. Louis to Liberia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Liberia that suits you.

Can I find flights from St. Louis to Liberia with flexible booking policies on momondo?

Yes. All flights to Liberia from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Liberia?

Once you have performed a search for St. Louis to Liberia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Liberia from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Liberia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 11/1
Sat 11/8
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Costa Rica