AirHint found the following cheapest one-way flights from San Juan (SJU) to London (LHR) in April 2026 (see full year).
One-Way flights
| 30 Apr | Frontier Airlines | ||
| 27 Apr | jetBlue | ||
| 07 Apr | Frontier Airlines | ||
| 02 Apr | Frontier Airlines | ||
| 19 Apr | Frontier Airlines | ||
| 18 Apr | Frontier Airlines | ||
| 05 Apr | Frontier Airlines | ||
| 06 Apr | United |
Also check the deals for return flights from San Juan to London in April.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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