iDiscover the best prices by selecting your travel dates.

British Airways
BA 1390
→ Outbound · 24 Sep
LHR
London Heathrow
CWL
Cardiff
7:30 AM
24 Sep
4h 00m
11:30 AM
24 Sep
← Return · 4 Oct
CWL
Cardiff
LHR
London Heathrow
12:00 PM
4 Oct
9h 25m
9:25 PM
4 Oct
from
£441
Return · per adult

British Airways
BA 1408
→ Outbound · 7 Oct
LHR
London Heathrow
CWL
Cardiff
6:20 PM
7 Oct
17h 10m
11:30 AM
8 Oct
← Return · 17 Oct
CWL
Cardiff
LHR
London Heathrow
12:00 PM
17 Oct
19h 55m
7:55 AM
18 Oct
from
£410
Return · per adult

British Airways
BA 1394
→ Outbound · 20 Oct
LHR
London Heathrow
CWL
Cardiff
6:15 AM
20 Oct
5h 15m
11:30 AM
20 Oct
← Return · 30 Oct
CWL
Cardiff
LCY
London City
12:00 PM
30 Oct
6h 20m
6:20 PM
30 Oct
from
£361
Return · per adult

British Airways
BA 1390
→ Outbound · 2 Nov
LHR
London Heathrow
CWL
Cardiff
6:15 AM
2 Nov
5h 15m
11:30 AM
2 Nov
← Return · 12 Nov
CWL
Cardiff
LCY
London City
12:00 PM
12 Nov
6h 20m
6:20 PM
12 Nov
from
£353
Return · per adult

British Airways
BA 1390
→ Outbound · 15 Nov
LHR
London Heathrow
CWL
Cardiff
7:05 AM
15 Nov
4h 25m
11:30 AM
15 Nov
← Return · 25 Nov
CWL
Cardiff
LCY
London City
12:00 PM
25 Nov
6h 20m
6:20 PM
25 Nov
from
£353
Return · per adult

British Airways
BA 1398
→ Outbound · 28 Nov
LHR
London Heathrow
CWL
Cardiff
12:40 PM
28 Nov
22h 50m
11:30 AM
29 Nov
← Return · 8 Dec
CWL
Cardiff
LHR
London Heathrow
12:00 PM
8 Dec
4h 25m
4:25 PM
8 Dec
from
£421
Return · per adult

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Popular airlines to Cardiff
Top 2 airlines flying from London to Cardiff
Cheapest and average return economy fares by carrier, from our sampled live searches. Fares change constantly — tap Search to see live prices for your dates.
| Airline | Cheapest | Average | Flights | Search |
|---|---|---|---|---|
British Airways | £281 | £505 | With stops | |
Aer Lingus | £301 | £371 | With stops |
Everything you should know
Insights & trends for London to Cardiff flights
Data-powered insights to help you find the cheapest flights, the best time to fly and much more.
How much is a return flight from London to Cardiff?
Return flights from London to Cardiff typically cost between £353 and £431 in August, though fares move with demand, season and how early you book. The lowest fare our search found recently was £281 — a great price and well below the usual range, so a price near this is worth grabbing. Keeping your dates flexible and comparing nearby days is the easiest way to land at the cheaper end.
What is the cheapest day to fly to Cardiff?
The cheapest day to depart to Cardiff is usually Monday, when fares start from around £356 — midweek departures tend to be quieter and cheaper. Friday is typically the most expensive day to fly out (around £449), as weekend travel is popular with leisure and business travellers alike. Where your plans allow, moving your outbound to a cheaper weekday can noticeably lower the total fare.
What is the cheapest time of day to fly to Cardiff?
Flights to Cardiff are generally cheapest departing in the morning, with fares from around £281. Departures in midday tend to cost more (about £301), as those slots are more convenient and in higher demand. Picking an off-peak departure time is a simple way to trim the price without changing your dates.
Average return fare to Cardiff by month
The cheapest month to fly from London to Cardiff is typically February, with return economy fares from £281. Fares are usually highest in May (around £431). Figures are indicative, from sampled live fares, and change with demand.
Cheapest sampled return economy fare, London to Cardiff, per month (gaps estimated). Search live for exact prices.
When to book flights from London to Cardiff
Are your dates flexible? These are the ideal times to fly to Cardiff based on our flight data — find the cheapest days for a 7-day trip.
Cheap flights to Cardiff from across the UK
You don't have to fly from London. The cheapest UK departure for Cardiff is currently Glasgow from £301. Compare return economy fares and typical flight times below — figures are indicative from sampled fares.
Indicative cheapest return economy fares by UK origin. Pick your dates in the search form above.
Weather in Cardiff
Monday
Light rain
20°C
31/08/2026
Tuesday
Drizzle
20°C
01/09/2026
Wednesday
Light rain
20°C
02/09/2026
Thursday
Drizzle
20°C
03/09/2026
Friday
Drizzle
21°C
04/09/2026
Saturday
Drizzle
22°C
05/09/2026
Sunday
Drizzle
22°C
06/09/2026
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Good to know — flights from London to Cardiff
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Find better results for your trip to Cardiff
Popular flights to Cardiff
About flights to Cardiff
Overview
Cardiff — Caerdydd — is Wales's compact capital: castle, national stadium and a revamped bay all within a 20-minute walk. For most UK travellers it's a rail or road trip, but direct flights link Cardiff with Scotland and Northern Ireland, and Cardiff Airport (CWL) clears quickly compared with the bigger hubs. Check the price charts on this page before you book.
Best time to fly to Cardiff
Cardiff's climate is mild and damp. July and August are the warmest and busiest months; late spring and September bring decent weather, thinner crowds and lower fares. Winters are cool and wet rather than icy, but Six Nations rugby weekends (February–March) and the Christmas markets push demand and prices up. The When to book chart above shows how fares move across the year for your dates.
Airlines and routes
Direct UK air links to Cardiff are limited, because rail and motorway cover most of the country well — London Paddington to Cardiff Central is roughly two hours by train, and there are no scheduled flights from London or Manchester. The flights that do run mainly connect Cardiff with Scotland and Northern Ireland: routes such as Edinburgh and Belfast City have been operated by Eastern Airways, with flying times of about one hour to one hour fifteen. KLM's Amsterdam service is useful if you're connecting to Cardiff from overseas. Check the routes listed on this page for current carriers.
Things to do in Cardiff
Most highlights are central or a short bus ride away:
- Cardiff Castle: Roman walls, a Norman keep and lavish Victorian interiors by William Burges, right in the city centre.
- Principality Stadium: home of Welsh rugby, with a retractable roof and behind-the-scenes tours on non-event days.
- St Fagans National Museum of History: a free open-air museum of re-erected historic Welsh buildings on the city's western edge.
- Cardiff Bay: waterfront dining around Mermaid Quay beside the Wales Millennium Centre and the Senedd.
- National Museum Cardiff: free galleries covering natural history and a strong Impressionist art collection.
At Cardiff Airport (CWL)
The airport sits at Rhoose in the Vale of Glamorgan, about 12 miles (19 km) south-west of the city centre. The 24-hour T9 Cardiff Airport Express bus runs to the city centre and Cardiff Central station in around 40 minutes. Rhoose Cardiff International Airport railway station, a short shuttle from the terminal, is on the Vale of Glamorgan line with trains to Cardiff Central in about 30 minutes. Taxis take roughly 30 minutes and car hire desks are in the terminal.
Top tips for finding cheap flights to Cardiff
- For domestic and short-haul routes, booking about four to eight weeks ahead usually lands the best fare — cross-check the When to book chart above.
- Avoid Six Nations weekends, major stadium concerts and school holidays, when flights and hotels climb together.
- Fly midweek: Tuesday and Wednesday departures are typically cheaper and quieter than Friday or Sunday.
- Compare airlines and nearby Bristol Airport, and weigh any fare against a direct train if you're travelling from England.
Travel essentials
Cardiff is in the United Kingdom, so UK travellers need no visa or passport for a domestic trip, though airlines require valid photo ID to board. The currency is pound sterling and cards are accepted almost everywhere. English is spoken universally alongside Welsh, which appears on all road signs. NHS care is available in an emergency, with no vaccinations or entry paperwork required.
Baggage & hand-luggage allowance for flights to Cardiff
Your allowance to Cardiff depends on the airline and the fare you book. The table below shows typical long-haul allowances so you know roughly what to expect — always confirm the exact limits with your airline before you fly.
| Fare type | Hand baggage | Checked baggage |
|---|---|---|
| Basic / Light economy | 1 small under-seat bag | Usually none — add for a fee |
| Standard economy | 1 cabin bag + 1 personal item | Typically 1 × 23 kg |
| Premium economy | 1–2 cabin bags + personal item | Typically 2 × 23 kg |
| Business / First | 2 cabin bags + personal item | Typically 2 × 32 kg |
Indicative only. Allowances vary by airline, route and fare — always check your airline's baggage policy.
Packing & baggage tips
- Full-service carriers (e.g. British Airways, Turkish Airlines, KLM) usually include a checked bag on long-haul economy fares; basic/low-cost fares often don't.
- Cabin (hand) bag size is commonly around 56 × 45 × 25 cm — confirm your airline's limit before you pack.
- Liquids in hand luggage must be in containers of 100 ml or less, inside one clear resealable bag.
- Weigh your bags at home — airport excess-baggage fees are far higher than pre-booked allowances.
- Extra or heavier bags are almost always cheaper added online in advance than at the airport.
FAQs — booking Cardiff flights
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