United Airlines flights from London to San José (LON - SJO)

LON — SJO
15 Feb — 22 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 London to San José in 2026

Find detailed information about United Airlines flights from London to San José. Explore the options provided by United Airlines to plan your journey from London to San José. Data last updated 16 January 2026.

One-way from

£855

Return from

£623

Popular in

December

Cheapest in

September

Average price (all airlines)

£656
United Airlines
  • United Airlines
  • 29/5
  • 2 total stops
  • 27h 26m total
  • London to San José
United Airlines
  • United Airlines
  • 28/1-8/2
  • 4 total stops
  • 47h 42m total
  • London to San José
Highest demand for flights from London to San José Juan Santamaria Intl; 7% potential price increase.
Best time to find cheap flights from London to San José Juan Santamaria Intl; 2% potential price drop.
Average price for all London to San José Juan Santamaria Intl flights (one-way and round-trip).

Find United Airlines flight deals from London to San José

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Cheapest United Airlines flights from London to San José
Explore the most affordable United Airlines flight options available from London to San José. Find the lowest fares with prices last updated on 16 January 2026.

Wed 28/109:30
LHR
-
SJO
2 stops29h 02m
United Airlines
Sun 8/206:30
SJO
-
LHR
2 stops18h 40m
United Airlines
Deal found 14/1£623
Mon 16/210:00
LHR
-
SJO
1 stop16h 39m
United Airlines
Thu 26/212:35
SJO
-
LHR
1 stop15h 40m
United Airlines
Deal found 15/1£643
Fri 20/213:45
LHR
-
SJO
1 stop24h 47m
United Airlines
Sun 8/305:40
SJO
-
LHR
1 stop25h 50m
United Airlines
Deal found 14/1£647

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

Use this chart to determine the optimal time to book a return flight from London to San José. Price data was last updated on 9 January 2026.

Booking with United Airlines 77 days in advance of your planned departure date is, on average, the best time to get cheap flights from London 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 to San José with United Airlines?

Currently, the most affordable month to book a United Airlines flight from London to San José in February, with an average price of £497. Conversely, traveling with United Airlines from London to San José in June will be the most expensive, with an average cost of £602. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Rainfall in San José by month

Plan your trip to San José by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San José ranges from 0.0 - 300.0 inches per month. September is typically the wettest month, when rainfall can reach 300.0 mm. February is typically the driest time to visit San José when rainfall is around 0.0 mm.

Temperature in San José by month

Plan your trip to San José by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San José, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 18.0 C).

Best time to book a flight from London to San José

Have a flexible travel schedule? Discover the best time to fly to San José from London 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 London 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 16 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 16 January 2026.
United Airlines
7.4
Good
9,164 reviews
Overview

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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