Southampton to Cardiff: buy now or wait?
Wait FareScore 0/100
£156 ≈ €187 Today's best fare
Cheaper than 0% of what we have seen
15 Nov Eastern Air Lines With a stop
Usually £156
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What the history says
Prices recorded 8
Typical price €187
Lowest we saw €111
Based on 8 prices we recorded on this exact route, compared against every month we have on record.
Best booking window
0–13 days — is when this route has been cheapest to book: €187 typical, on 8 observations.
Cheapest months to fly to Cardiff
November €187 5 observations
Booking tips from our fare data
- How far in advance should you book a flight?
- Book 1.5–2 months before departure. Tracking the same flights at every lead time (107,477 flights on 21,208 routes, 2026-06-14 to 2026-11-09), that window had the smallest average premium over each flight's lowest fare: +16.4%, against +48.7% in the last 3 days.
- What are the cheapest cities to fly to this winter?
- Milan (median €29), London (median €30), Palermo (median €31). That is the median one-way fare for departures from 2026-11-01, across 343 cities ranked from fares we observed, counting only cities reachable from at least 50 airports.
- Is it cheaper to book flights months in advance?
- Not much. Booking 2–3 months ahead cost on average 21.1% more than the same flight's lowest fare, more than at 1.5–2 months (+16.4%). On 28,935 flights seen both 2–3 months and 3–4 weeks out, the early fare was higher 44.9% of the time: a coin toss.
Price drops on Telegram
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