Book Cheap Flights to Costa Rica on Alaska Airlines
expand_more
1 Passenger
expand_moretoday
today
Find Costa Rica flight deals.*
flight_takeoff
flight_land
Los Angeles (LAX)to
Liberia, CR (LIR)Depart: Oct 17, 2026
From
$354
Seen: 1 hour ago
One-way
Main
Los Angeles (LAX)to
San Jose, CR (SJO)Depart: Oct 30, 2026
From
$358
Seen: 5 hours ago
One-way
Main
Los Angeles (LAX)to
San Jose, CR (SJO)Depart: Oct 23, 2026
From
$457
Seen: 8 hours ago
One-way
Main
Los Angeles (LAX)to
San Jose, CR (SJO)Depart: Oct 22, 2026
From
$457
Seen: 8 hours ago
One-way
Main
Los Angeles (LAX)to
San Jose, CR (SJO)Depart: Oct 25, 2026
From
$457
Seen: 56 minutes ago
One-way
Main
Los Angeles (LAX)to
San Jose, CR (SJO)Depart: Oct 9, 2026
From
$547
Seen: 34 minutes ago
One-way
Main
San Francisco (SFO)to
San Jose, CR (SJO)Depart: Oct 21, 2026
From
$486
Seen: 2 minutes ago
One-way
Main
San Francisco (SFO)to
San Jose, CR (SJO)Depart: Nov 5, 2026
From
$549
Seen: 14 hours ago
One-way
Main
Seattle (SEA)to
San Jose, CR (SJO)Depart: Oct 31, 2026
From
$424
Seen: 4 hours ago
One-way
Main
Seattle (SEA)to
San Jose, CR (SJO)Depart: Oct 9, 2026
From
$1,035
Seen: 9 hours ago
One-way
Main
Portland (PDX)to
San Jose, CR (SJO)Depart: Oct 23, 2026
From
$762
Seen: 2 hours ago
One-way
Main
San Diego (SAN)to
San Jose, CR (SJO)Depart: Oct 30, 2026
From
$396
Seen: 8 hours ago
One-way
Main
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.
One-way offers for plane tickets to Costa Rica.*
flight_takeoff
flight_land
sortkeyboard_arrow_down
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Jan 23, 2027 | From $219 Seen: 15 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Feb 17, 2027 | From $219 Seen: 15 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Feb 18, 2027 | From $219 Seen: 15 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Feb 19, 2027 | From $219 Seen: 15 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Feb 25, 2027 | From $219 Seen: 15 hours ago | |
| Los Angeles (LAX) | Liberia, CR (LIR) | One-way | Saver | Depart: Feb 27, 2027 | From $219 Seen: 15 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Jan 16, 2027 | From $255 Seen: 15 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Feb 16, 2027 | From $255 Seen: 15 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Jan 30, 2027 | From $255 Seen: 15 hours ago | |
| San Francisco (SFO) | Liberia, CR (LIR) | One-way | Saver | Depart: Feb 3, 2027 | From $255 Seen: 15 hours ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.