United Airlines flights from London Heathrow Airport to San José (LHR - SJO)

LHR — SJO
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags

Cheapflights users flying from London to San José on United Airlines typically fly into San José Juan Santamaria Intl and depart from London Heathrow. Select your dates above for pricing.

United Airlines flights from Heathrow to San José in 2026

Find detailed information about United Airlines flights from Heathrow to San José. Explore the options provided by United Airlines to plan your journey from Heathrow to San José. Data last updated 9 January 2026.

One-way from

£854

Return from

£622

Popular in

December

Cheapest in

November

Average price (all airlines)

£604
United Airlines
  • United Airlines
  • 29/5
  • 1 total stop
  • 27h 40m total
  • London to San José
United Airlines
  • United Airlines
  • 4/2-11/2
  • 4 total stops
  • 47h 22m total
  • London to San José
Highest demand for flights from London Heathrow to San José Juan Santamaria Intl; 3% potential price increase.
Best time to find cheap flights from London Heathrow to San José Juan Santamaria Intl; 2% potential price drop.
Average price for all London Heathrow to San José Juan Santamaria Intl flights (one-way and round-trip).

Find United Airlines flight deals from Heathrow to San José

Enter your travel dates to find the best prices.

Cheapest United Airlines flights from Heathrow to San José
Explore the most affordable United Airlines flight options available from Heathrow to San José. Find the lowest fares with prices last updated on 9 January 2026.

Wed 4/211:30LHR - SJO
2 stops27h 02mUnited Airlines
Wed 11/208:45SJO - LHR
1 stop19h 30mUnited Airlines
Deal found 7/1£622
Tue 24/207:30LHR - SJO
2 stops18h 23mUnited Airlines
Tue 17/305:30SJO - LHR
2 stops18h 50mUnited Airlines
Deal found 7/1£631
Wed 21/110:00LHR - SJO
1 stop16h 39mUnited Airlines
Tue 27/109:40SJO - LHR
1 stop20h 20mUnited Airlines
Deal found 8/1£643

How far ahead should I book a flight from London Heathrow Airport to San José with United Airlines?

Use this chart to determine the optimal time to book a return flight from Heathrow to San José. Price data was last updated on 2 January 2026.

Booking with United Airlines 13 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to San José. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to San José with United Airlines?

Currently, the most affordable month to book a United Airlines flight from London Heathrow Airport to San José in February, with an average price of £491. Conversely, traveling with United Airlines from London Heathrow Airport to San José in June will be the most expensive, with an average cost of £600. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Best time to book a flight from Heathrow to San José

Have a flexible travel schedule? Discover the best time to fly to San José from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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Fly from Heathrow to San José on another airline

Consider alternative airlines that service the San José area. Flight routes are based on user searches made on Cheapflights and were last updated on 9 January 2026.

See what others are saying about United Airlines

Read reviews and see what other travellers are saying about their experiences with United Airlines. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing United Airlines for your next flight. Reviews last updated 9 January 2026.
United Airlines
7.4
Good
9,143 reviews
Overview

Crew

8.1

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

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