Cheap flights from San José, Costa Rica to Ontario, CA
Flights starting at £135. Choose between Frontier Airlines, Avianca, or Spirit Airlines to find the best price.
Make your travel wishlist, we'll do the rest
Hidden deals
Kiwi-Code uncovers prices airlines don't want you to see.
Effortless booking
Use our flexible filters to tailor your search.
Travel hacking
Look out for the travel hack star icon for even cheaper fares.
Tips to know when travelling to Ontario
Cheapest one-way trip | £180 |
---|---|
Cheapest round-trip | £304 |
Average round-trip | £358 |
Includes rare itinerary | |
Most popular airline | Frontier Airlines |
Search by stops
- Nonstop
- Up to 1 stop
- Up to 2 stops
Search by carrier
Search by price
Search by departure date
Receive exclusive deals by email
By subscribing you agree to receive offers according to the conditions described in our Privacy Policy.
The most popular airlines for this route are Frontier Airlines, Avianca, Spirit Airlines, Volaris, and United Airlines. San José and Ontario have 152 direct flights per week.
Check-in for a flight from San José to Ontario
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Avianca | AVA | AV | No | Opens 48 days before flight Closes 1 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
Volaris | VOI | Y4 | No | Opens 24 days before flight Closes 1 hours before flight |
United Airlines | UAL | UA | Yes | No |
Weather in Ontario
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 18°C | 7°C |
February | 18°C | 7°C |
March | 20°C | 8°C |
April | 23°C | 10°C |
May | 25°C | 13°C |
June | 29°C | 16°C |
July | 33°C | 19°C |
August | 33°C | 20°C |
September | 32°C | 18°C |
October | 27°C | 15°C |
November | 22°C | 10°C |
December | 17°C | 7°C |
14 day forecast
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.
Explore alternative trips
Flights from San José
- Flights from San José to London
- Flights from San José to Toronto
- Flights from San José to Cancún
- Flights from San José to Dublin
- Flights from San José to Tambor
- Flights from San José to Liberia
- Flights from San José to Guatemala City
- Flights from San José to Mexico City
- Flights from San José to Puerto Jiménez
- Flights from San José to Calgary
- Flights from San José to Quepos
- Flights from San José to Tamarindo
- Flights from San José to Vancouver
- Flights from San José to Bahía Drake
- Flights from San José to Panama
- Flights from San José to Sydney
- Flights from San José to Halifax
- Flights from San José to Montreal
- Flights from San José to Bogotá
- Flights from San José to Paris
Flights to Ontario
- Flights from London to Ontario
- Flights from New York to Ontario
- Flights from Bangkok to Ontario
- Flights from San Francisco to Ontario
- Flights from Denver to Ontario
- Flights from Sacramento to Ontario
- Flights from Taipei to Ontario
- Flights from Manila to Ontario
- Flights from Toronto to Ontario
- Flights from Calgary to Ontario
- Flights from Seattle to Ontario
- Flights from Las Vegas to Ontario
- Flights from San Jose to Ontario
- Flights from Orlando to Ontario
- Flights from Houston to Ontario
- Flights from Macau to Ontario
- Flights from Los Angeles to Ontario
- Flights from Washington, D.C. to Ontario
- Flights from Manchester to Ontario
- Flights from Detroit to Ontario
Popular routes
- Flights from Washington, D.C. to Shanghai
- Flights from Stockholm to Fort Lauderdale
- Flights from Saint Thomas to Minneapolis
- Flights from Cox's Bazar to Bucharest
- Flights from Medellín to Jacksonville
- Flights from Cincinnati to Brussels
- Flights from Amman to Lahore
- Flights from Dammam to São Paulo
- Flights from Syracuse to Madrid
- Flights from London to Milan
- Flights from Hartford to Austin
- Flights from London to Faro