Cheap flights from London to Cardiff
Cheapest current fares: $138 in June 2026 on connecting flights.
Cheapest month-by-month fares
Lowest available fare per calendar month from London (LHR) to Cardiff (CWL). Refreshed daily.
London (LHR) → Cardiff (CWL)
- June 2026 $138
- August 2026 $160
- July 2026 $214
- May 2026 $260
Frequently asked questions
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What is the cheapest month to fly from London to Cardiff?
Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from London (LHR) to Cardiff (CWL), with fares starting from $138.
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What is the lowest current fare from LHR to CWL?
The lowest currently-listed fare from London (LHR) to Cardiff (CWL) is $138 on 2026-06-15.
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Is there a direct flight from London to Cardiff?
There is currently no non-stop service from LHR to CWL. Most travellers connect through a hub airport. See our route page for current stopover options.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.