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Cheap flights from Great Falls to Costa Rica from $666

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 8/21. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
4:55 pm - 5:45 pm
GTF
-
LIR
24h 50m
2 stops
Alaska Airlines Logo
10:00 am - 4:13 pm
LIR
-
GTF
30h 13m
2 stops
$666Alaska Airlines
Fri, Aug 21 - Wed, Sep 2
United Airlines Logo
6:15 am - 3:19 pm
GTF
-
LIR
9h 04m
1 stop
United Airlines Logo
11:49 am - 9:18 pm
LIR
-
GTF
9h 29m
1 stop
$690United Airlines
Mon, May 11 - Thu, May 14
United Airlines Logo
6:15 am - 3:19 pm
GTF
-
LIR
9h 04m
1 stop
United Airlines Logo
1:20 pm - 1:34 pm
LIR
-
GTF
24h 14m
2 stops
$695United Airlines
Mon, May 11 - Thu, May 14
Alaska Airlines Logo
6:15 pm - 6:20 am
GTF
-
LIR
12h 05m
2 stops
Alaska Airlines Logo
11:20 am - 6:12 pm
LIR
-
GTF
30h 52m
2 stops
$697Alaska Airlines
Mon, May 11 - Thu, May 14
United Airlines Logo
6:15 am - 3:19 pm
GTF
-
LIR
9h 04m
1 stop
United Airlines Logo
11:49 am - 9:18 pm
LIR
-
GTF
9h 29m
1 stop
$700United Airlines
Mon, May 11 - Thu, May 14
United Airlines Logo
6:15 am - 3:19 pm
GTF
-
LIR
9h 04m
1 stop
United Airlines Logo
1:20 pm - 1:34 pm
LIR
-
GTF
24h 14m
2 stops
$705United Airlines
Mon, May 11 - Thu, May 14
United Airlines Logo
6:15 am - 3:19 pm
GTF
-
LIR
9h 04m
1 stop
United Airlines Logo
1:20 pm - 9:18 pm
LIR
-
GTF
31h 58m
2 stops
$721United Airlines
Mon, May 11 - Wed, May 13

United Airlines flights from Great Falls to Costa Rica

Our best United Airlines deals on Great Falls to Costa Rica flight tickets
United Airlines
May 11
GTF6:15 amGreat Falls
9h 04m
1 stop
LIR3:19 pmLiberia
May 14
LIR11:49 amLiberia
9h 29m
1 stop
GTF9:18 pmGreat Falls
$690
United Airlines
May 11
GTF6:15 amGreat Falls
9h 04m
1 stop
LIR3:19 pmLiberia
May 14
LIR1:20 pmLiberia
24h 14m
2 stops
GTF1:34 pmGreat Falls
$695
United Airlines
May 11
GTF6:15 amGreat Falls
9h 04m
1 stop
LIR3:19 pmLiberia
May 14
LIR11:49 amLiberia
9h 29m
1 stop
GTF9:18 pmGreat Falls
$700

Alaska Airlines flights from Great Falls to Costa Rica

Our best Alaska Airlines deals on Great Falls to Costa Rica flight tickets
Alaska Airlines
Aug 21
GTF4:55 pmGreat Falls
24h 50m
2 stops
LIR5:45 pmLiberia
Sep 2
LIR10:00 amLiberia
30h 13m
2 stops
GTF4:13 pmGreat Falls
$666
Alaska Airlines
May 11
GTF6:15 pmGreat Falls
12h 05m
2 stops
LIR6:20 amLiberia
May 14
LIR11:20 amLiberia
30h 52m
2 stops
GTF6:12 pmGreat Falls
$697

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 March 30, 2026.
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

Cheapest round-trip

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Fri 8/21

4:55 pm-5:45 pm

2 stops24h 50m

Liberia

Wed 9/2

10:00 am-4:13 pm

2 stops30h 13m

$666
Quickest round-trip

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Mon 5/11

6:15 am-3:19 pm

1 stop9h 04m

Liberia

Thu 5/14

11:49 am-9:18 pm

1 stop9h 29m

$690

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Mon 5/11

6:15 am-3:19 pm

1 stop9h 04m

Liberia

Thu 5/14

1:20 pm-1:34 pm

2 stops24h 14m

$695

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Mon 5/11

6:15 pm-6:20 am

2 stops12h 05m

Liberia

Thu 5/14

11:20 am-6:12 pm

2 stops30h 52m

$697

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Mon 5/11

6:15 am-3:19 pm

1 stop9h 04m

Liberia

Thu 5/14

11:49 am-9:18 pm

1 stop9h 29m

$700

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Mon 5/11

6:15 am-3:19 pm

1 stop9h 04m

Liberia

Thu 5/14

1:20 pm-1:34 pm

2 stops24h 14m

$705

Great FallsLiberia

GTF - LIR

GTFLIR

Great Falls

Mon 5/11

6:15 am-3:19 pm

1 stop9h 04m

Liberia

Wed 5/13

1:20 pm-9:18 pm

2 stops31h 58m

$721

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

9h 04m

Direct flights

None
The fastest flight from Great Falls to Costa Rica takes 9h 04m
There are no direct flights from Great Falls to Costa Rica. There are no popular flight routes from Great Falls to Costa Rica.
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  • 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 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.

  • How do I get Price Alerts for flights from Great Falls to Costa Rica?

    Confirm your travel details to search for the latest offers for flights from Great Falls to Costa Rica. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Great Falls to Costa Rica with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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.

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