How to Find Cheap Flights to Costa Rica

The Short Answer

Fly in September or October for the cheapest fares. Book 4-6 weeks ahead. Compare both airports: San Jose (SJO) and Liberia (LIR). Spirit, JetBlue, Southwest, and Frontier all serve Costa Rica with competitive fares. Round-trip flights under $300 from major US cities are common, and deals under $200 appear regularly.

Why Costa Rica Flights Are So Affordable

Costa Rica ranks among the cheapest international flight destinations from the US. The country is only 3-6 hours from most US cities by air, and heavy competition between budget carriers and legacy airlines keeps prices low. Multiple US airlines offer nonstop service, and budget carriers like Spirit have driven prices down dramatically in recent years.

When to Fly for the Lowest Fares

Cheapest Months

September and October consistently offer the lowest fares to Costa Rica. These months fall in the heart of the rainy season ("green season"), which scares away some travelers. But here's the thing: it doesn't rain all day. Mornings are usually clear, with afternoon showers that pass quickly. Everything is lush and green, wildlife is abundant, and you'll have popular spots practically to yourself. Average fares run around $250-300 round-trip during these months.

Shoulder Season Sweet Spot

May and early June and November offer a good balance of reasonable fares and decent weather. The transition between dry and rainy seasons means lower prices without the heaviest rainfall. Fares typically run $50-100 more than the cheapest months but $100-200 less than peak season.

When to Avoid

December through March is peak dry season and peak tourist season. Fares spike, especially around Christmas, New Year's, and spring break. Easter week is particularly expensive as it's a major holiday in Costa Rica too. If you must fly during peak season, book 3-4 months ahead.

Two Airports, Two Different Experiences

San Jose (SJO) - Juan Santamaria International

San Jose is Costa Rica's main international airport with the most flight options and typically the cheapest fares. Average round-trip fares from major US cities hover around $239. SJO is your best bet if you're heading to:

• The Central Valley and San Jose
• The Caribbean coast (Puerto Viejo, Tortuguero)
• Manuel Antonio and the central Pacific coast
• Arenal Volcano and La Fortuna
• Monteverde Cloud Forest

Liberia (LIR) - Daniel Oduber Quiros International

Liberia serves the Guanacaste region in northwestern Costa Rica. Fares average about the same as SJO (around $239 round-trip), but fewer airlines serve LIR, so deals can be less frequent. LIR is your airport if you're heading to:

• Guanacaste beaches (Tamarindo, Playa Flamingo, Nosara)
• The Nicoya Peninsula
• Papagayo resorts
• Rincon de la Vieja National Park

Pro tip: Always check both airports. Sometimes SJO is $100+ cheaper than LIR for the same travel dates, and vice versa. A shuttle or domestic flight between the two regions is cheap and easy.

Budget Airlines to Costa Rica

The competition on US-to-Costa Rica routes is fierce, which is great for your wallet:

• Spirit Airlines - Often the cheapest option, with fares from major US cities starting around $81 one-way. Flies from Fort Lauderdale, Houston, and other hubs to SJO. Remember: bags cost extra on Spirit
• JetBlue - Excellent balance of price and service. Flies from New York JFK, Fort Lauderdale, and other cities to both SJO and LIR. Fares start around $139 one-way, and JetBlue includes a carry-on bag
• Southwest Airlines - Flies to SJO from several US cities. Two free checked bags included, which is a huge advantage. No change fees either. Their fares are competitive even if not always the absolute cheapest
• Frontier Airlines - Budget fares to SJO from various US cities. Similar to Spirit, bags are extra, but base fares can be rock-bottom
• Copa Airlines - Connects through Panama City. Fares starting around $85 per person make Copa one of the cheapest options, especially from cities without nonstop service to Costa Rica
• Volaris Costa Rica - Budget fares from select US cities, starting around $91

Legacy Airlines Worth Checking

• United - Nonstop from Houston (IAH) and Newark (EWR) to SJO and LIR. Often competitive during sales
• Delta - Nonstop from Atlanta (ATL) and other hubs
• American Airlines - Nonstop from Miami (MIA) and Dallas (DFW)
• Alaska Airlines - Nonstop from Los Angeles (LAX) to SJO and LIR

Legacy airlines occasionally match budget carrier prices during sales, and they include more amenities. Always compare the total cost including bags.

Search Strategy for the Best Deals

Use Google Flights to Compare Both Airports

Search your home airport to "Costa Rica" (not a specific airport). Google Flights will show you fares to both SJO and LIR, making it easy to spot which is cheaper for your dates. Use the date grid to find the cheapest departure/return combinations.

Check Momondo for Budget Carrier Deals

Momondo is particularly good at surfacing Spirit, Frontier, and Copa fares that other search engines sometimes miss. Fares from the US to Costa Rica starting at $74 round-trip have been found on Momondo.

Book on Sunday for Small Savings

Data suggests Sunday is one of the cheapest days to book flights to Costa Rica, with savings of 6-13% compared to Friday bookings. Not a game-changer, but every dollar counts on a budget trip.

Set Fare Alerts Everywhere

Costa Rica error fares and flash sales happen frequently because of the intense competition. Set alerts on Google Flights, Skyscanner, and Going (formerly Scott's Cheap Flights). A $150 round-trip deal won't last more than a day or two.

Booking Timing

Book 4-6 weeks before departure for off-season travel. For peak dry season (December-March), book 2-3 months ahead. Flights booked at least 28 days before departure are typically 24% cheaper than last-minute bookings.

Advanced Money-Saving Moves

• Fly into SJO and out of LIR (or vice versa) - Open-jaw itineraries let you see both sides of Costa Rica without backtracking. Price is often the same as a round-trip to one airport
• Use Southwest for the bag advantage - If you're bringing gear (surfboard, hiking equipment, or just heavy luggage), Southwest's two free checked bags can save you $60-120 compared to budget carriers
• Position to Miami or Fort Lauderdale - These airports have the most competition for Costa Rica routes. A cheap domestic ticket to South Florida plus a budget fare to SJO can beat a direct itinerary from smaller US airports
• Fly midweek - Tuesday and Wednesday departures are typically the cheapest. The difference can be $50-100 compared to Friday or Sunday flights
• Check one-way pricing - Sometimes two one-way tickets on different airlines (Spirit one way, JetBlue the other) is cheaper than any round-trip fare
• Skip the domestic flights in Costa Rica - Internal flights are expensive. Public buses connect major destinations cheaply (a few dollars), and shared shuttles are affordable and reliable

What to Watch Out For

US citizens don't need a visa for Costa Rica for stays under 90 days. You'll need a passport valid for the duration of your stay and may be asked to show proof of onward travel (a return ticket).

Costa Rica charges a departure tax of about $29, which is usually included in your ticket price. Check your airline's policy to make sure you're not surprised at the airport.

Be aware that Spirit and Frontier's base fares look incredible but exclude everything. A Spirit fare of $81 one-way becomes $140+ once you add a carry-on bag. Compare the total cost, not just the base fare, when deciding between budget and legacy carriers.

Finally, the rainy season (May-November) doesn't mean constant rain, but some roads in rural areas can become difficult. If you're heading off the beaten path during green season, a 4x4 rental is worth the extra cost. The Caribbean side has different weather patterns than the Pacific, so research your specific destination.