Cheap flights from Great Falls to Costa Rica from $487

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to Costa Rica departing on 3/7. 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.

Find the cheapest flights from Great Falls to Costa Rica

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:28 pm - 4:58 pm
GTF
-
LIR
21h 30m2 stops
Alaska Airlines Logo
6:08 pm - 4:17 pm
LIR
-
GTF
22h 09m2 stops
$487Alaska Airlines
Sat, Mar 7 - Thu, Mar 12
Alaska Airlines Logo
5:59 pm - 6:01 pm
GTF
-
LIR
23h 02m2 stops
Alaska Airlines Logo
11:20 am - 5:19 pm
LIR
-
GTF
30h 59m2 stops
$503Alaska Airlines
Mon, Feb 2 - Thu, Feb 5
United Airlines Logo
2:30 pm - 10:24 am
GTF
-
LIR
18h 54m2 stops
United Airlines Logo
11:50 am - 9:11 pm
LIR
-
GTF
9h 21m1 stop
$509United Airlines
Sat, Mar 7 - Thu, Mar 12
United Airlines Logo
2:30 pm - 3:08 pm
GTF
-
LIR
23h 38m1 stop
United Airlines Logo
11:50 am - 9:11 pm
LIR
-
GTF
9h 21m1 stop
$512United Airlines
Sat, Mar 7 - Thu, Mar 12
United Airlines Logo
6:10 am - 4:08 pm
GTF
-
LIR
8h 58m1 stop
United Airlines Logo
2:01 pm - 9:53 pm
LIR
-
GTF
32h 52m2 stops
$642United Airlines
Mon, Feb 2 - Thu, Feb 5
United Airlines Logo
6:10 am - 4:08 pm
GTF
-
LIR
8h 58m1 stop
United Airlines Logo
12:50 pm - 9:53 pm
LIR
-
GTF
10h 03m1 stop
$926United Airlines
Mon, Feb 2 - Thu, Feb 5
United Airlines Logo
6:10 am - 4:08 pm
GTF
-
LIR
8h 58m1 stop
United Airlines Logo
8:35 am - 9:53 pm
LIR
-
GTF
14h 18m2 stops
$938United Airlines
Mon, Feb 2 - Thu, Feb 5
United Airlines Logo
6:10 am - 4:08 pm
GTF
-
LIR
8h 58m1 stop
United Airlines Logo
12:50 pm - 9:53 pm
LIR
-
GTF
10h 03m1 stop
$1,089United Airlines
Mon, Feb 2 - Thu, Feb 5

United Airlines flights from Great Falls to Costa Rica

Our best United Airlines deals on Great Falls to Costa Rica flight tickets
United Airlines
Mar 7
GTF2:30 pmGreat Falls
18h 54m
2 stops
LIR10:24 amLiberia
Mar 12
LIR11:50 amLiberia
9h 21m
1 stop
GTF9:11 pmGreat Falls
United Airlines
Mar 7
GTF2:30 pmGreat Falls
23h 38m
1 stop
LIR3:08 pmLiberia
Mar 12
LIR11:50 amLiberia
9h 21m
1 stop
GTF9:11 pmGreat Falls
United Airlines
Feb 2
GTF6:10 amGreat Falls
8h 58m
1 stop
LIR4:08 pmLiberia
Feb 5
LIR2:01 pmLiberia
32h 52m
2 stops
GTF9:53 pmGreat Falls

Alaska Airlines flights from Great Falls to Costa Rica

Our best Alaska Airlines deals on Great Falls to Costa Rica flight tickets
Alaska Airlines
Mar 7
GTF6:28 pmGreat Falls
21h 30m
2 stops
LIR4:58 pmLiberia
Mar 12
LIR6:08 pmLiberia
22h 09m
2 stops
GTF4:17 pmGreat Falls
Alaska Airlines
Feb 2
GTF5:59 pmGreat Falls
23h 02m
2 stops
LIR6:01 pmLiberia
Feb 5
LIR11:20 amLiberia
30h 59m
2 stops
GTF5:19 pmGreat Falls

momondo Fare Finder

 
Customize your flight search to find flights from Great Falls to Costa Rica 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 December 9, 2025.
Use the filters below to find and compare flights from Great Falls to Costa Rica that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Sat 3/7

6:28 pm-4:58 pm

2 stops21h 30m

Liberia

Thu 3/12

6:08 pm-4:17 pm

2 stops22h 09m

$487

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Mon 2/2

5:59 pm-6:01 pm

2 stops23h 02m

Liberia

Thu 2/5

11:20 am-5:19 pm

2 stops30h 59m

$503

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Sat 3/7

2:30 pm-10:24 am

2 stops18h 54m

Liberia

Thu 3/12

11:50 am-9:11 pm

1 stop9h 21m

$509

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Sat 3/7

2:30 pm-3:08 pm

1 stop23h 38m

Liberia

Thu 3/12

11:50 am-9:11 pm

1 stop9h 21m

$512

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Mon 2/2

6:10 am-4:08 pm

1 stop8h 58m

Liberia

Thu 2/5

2:01 pm-9:53 pm

2 stops32h 52m

$642

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Mon 2/2

6:10 am-4:08 pm

1 stop8h 58m

Liberia

Thu 2/5

12:50 pm-9:53 pm

1 stop10h 03m

$926

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Mon 2/2

6:10 am-4:08 pm

1 stop8h 58m

Liberia

Thu 2/5

8:35 am-9:53 pm

2 stops14h 18m

$938

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Mon 2/2

6:10 am-4:08 pm

1 stop8h 58m

Liberia

Thu 2/5

12:50 pm-9:53 pm

1 stop10h 03m

$1,089

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Costa Rica from

How to get the cheapest flight ticket from Great Falls to Costa Rica

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 day to depart on your flight to Costa Rica?

According to our data, Saturday is the cheapest day to fly to Costa Rica from Great Falls. The lowest ticket price found for a Saturday departure recently was $866. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $996. These prices are subject to change though, so be sure to set up a Price Alert for flights to Costa Rica.

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

In the afternoon is the cheapest time of day to fly from Great Falls to Costa Rica when you can find flight prices for as low as $996. Flying to Costa Rica in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Costa Rica are more costly in the morning, with an average ticket price of $1,031. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Great Falls to Costa Rica flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to Costa Rica

Fastest flight time

21h 41m

Direct flights

None
The fastest flight from Great Falls to Costa Rica takes 21h 41m
There are no direct flights from Great Falls to Costa Rica. There are no popular flight routes from Great Falls to Costa Rica.
  • When did momondo last update prices for flights from Great Falls Airport to Costa Rica?

    Prices for flights from Great Falls Airport to Costa Rica are refreshed on a daily basis.

  • How many operators does momondo search for flights from Great Falls Airport to Costa Rica?

  • How old do you have to be to fly from Great Falls Airport to Costa Rica?

    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 Great Falls Airport to Costa Rica.

  • What documentation or ID do you need to fly to Costa Rica?

    The travel and health documents you'll need for your trip to Costa Rica 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 Costa Rica. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Great Falls to Costa Rica

Compare and see reviews for airlines that fly from Great Falls to Costa Rica with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $350Free CancellationRating
7.4
9,089 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Great Falls to Costa Rica?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Costa Rica from Great Falls.

Can I find flights from Great Falls to Costa Rica with flexible booking policies on momondo?

Flights from Great Falls to Costa Rica with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Great Falls to Costa Rica?

Once all potential Great Falls to Costa Rica flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Great Falls to Costa Rica right now. Can momondo alert me if prices change?

Price alerts on flights to Costa Rica from Great Falls 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 Costa Rica 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 1/8
Thu 1/15

Find better results for your trip to Costa Rica

Popular cities in Costa Rica

Popular flights according to clicks in the last 7 days on momondo