Cheapest family holidays in September (the secret weapon for flexible families)

Why September gets cheap so fast

UK state schools return between the 1st and 5th of September. Demand for family-suitable accommodation collapses almost overnight. Tour operators have inventory they cannot sell, so they discount aggressively for the next four to six weeks until the October half term rebound.

Weather across the Mediterranean is still excellent through September. Sea temperatures peak around the middle of the month. Resort facilities, restaurants and kids' clubs are still running. It is the same holiday at a different price.

Best value destinations for September families

Greek islands top the list. Crete, Rhodes, Kos and Corfu drop sharply in price from the second week of September. A family week that cost £2,400 in August lands at £1,500 to £1,700 in mid-September.

Turkey south coast is the second pick. Side, Belek and Alanya 5 star all-inclusives drop to £1,400 to £1,750 for a family of four. The water is at its warmest of the year and resort capacity drops noticeably so service improves.

The Algarve and Croatia are the European options. The Algarve is the locals' favourite month with fewer crowds and the restaurants visibly less stretched. Croatia hits its ideal weather window: warm but no longer brutally hot.

• Crete (Rethymno, Chania): £1,500-£1,800 self-catering
• Rhodes: £1,600-£1,950 all-inclusive
• Turkey south coast: £1,400-£1,750 all-inclusive
• Algarve (Vilamoura, Albufeira): £1,650-£1,900
• Croatia (Hvar, Brac, Split area): £1,800-£2,150

The actual saving versus the same trip in August

The pull-them-out-of-school question

Term time absence rules in England, Wales and Scotland tightened in 2024. Most heads will not authorise a holiday and unauthorised absence carries a fine (£80 per parent per child, doubled if unpaid within 21 days). For a family of four, that is up to £640 in fines.

The maths still works in many cases. A £1,000 saving on the holiday minus a £160 fine for two days off is a net £840 win. But the fines escalate quickly for repeat offences and the impact on your relationship with the school matters too. If you have one shot at it, do it. If you are tempted to do it every year, the maths gets worse.

How to book September well

Search dates from the second week of September onwards. The first week tends to be more expensive because it still overlaps with some European school holidays.

Book three to five months out. Earlier and you miss the deepest discounts which appear as operators get nervous about inventory in May and June. Later and you risk losing the best flight times.

Look at flights and hotels separately as well as packages. The package wins maybe half the time in September, the unbundled version wins the other half. Check both.

What to watch out for

• Some smaller hotels close from mid-September, especially in Greece. Check the operator listing carefully
• Half board can dry up at the smaller all-inclusives as the chef rotas thin out
• Late September is hurricane season in the Caribbean and the eastern Atlantic. Lower risk in the Med but check weather forecasts before booking
• Some kids' clubs run reduced hours from mid-September. Worth a quick check if that matters
• School fines for taking children out of term time. £80 per parent per child in England (rising to £160 if not paid in 21 days)

September week by week, what you actually pay

The first week of September overlaps with European school returns and a few late UK independent school holidays. Prices have started to soften but are still 15 to 20 percent above the deep mid-September lows.

The second and third weeks of September are the prime window. Prices are at their lowest, weather is still excellent across the Med, sea temperatures are at their warmest. This is the window we recommend most often when we cost flexible September trips on the Holiday Savings Report.

The last week of September starts to feel autumnal in parts of the western Med (Spain, southern France). Greece, Turkey and the Canaries stay reliably warm. Prices stay low and supply remains decent.

The first week of October is a sweet spot for half term families who can pull children out for a day or two: October half term peaks the week after, but the week before sits at September pricing for many destinations.

Pre-school families: the September advantage in numbers

If your eldest is under four, mid-September is essentially a £1,000 saving on what would be the same trip in August. A typical pre-school family of four can do Crete for £1,650 in mid-September that would cost £2,650 a month earlier. That is enough difference to upgrade from self-catering to all-inclusive, or from three star to four star, or just to keep the £1,000 for next year's holiday fund.

We see families significantly under-use this window. There is a cultural assumption that August is when you go. For families with no school constraint, the cost of obeying that assumption is roughly the price of a whole second holiday.

Pulling children out: how to actually have the conversation

Most head teachers will not authorise a family holiday but they will note your reason on the absence record. A polite written request three weeks ahead, explaining the financial reality and the educational value (yes, including beach holidays count as cultural learning), tends to land better than a verbal request.

Most schools will not pursue a fine for a one-off absence of two or three days, particularly if your child has good attendance. The fine framework exists; the enforcement varies sharply between local authorities. Check your specific LEA online before assuming.

What does matter is the relationship with the school. If you pull your child out in September and again at Easter and again in October, the goodwill runs out. Use the September trick once a year at most.

Best operators and routes for September

• Jet2 Holidays: best for Crete, Rhodes, Kos and Cyprus packages
• TUI: best for Turkey and Egypt all-inclusive
• easyJet Holidays: best for Spain and Portugal self-catering
• On The Beach: best for build-your-own with mid-September flight flexibility
• British Airways Holidays: best for Lanzarote and Tenerife September deals
• Olympic Holidays: best for less-touristy Greek islands (Skiathos, Lefkada, Paros)

Honest answers to the most common September questions

Yes, you will need long sleeves for a couple of evenings in the western Med by late September. The days are still hot but the temperature drops faster after sunset than it does in August. Pack one light layer per person and you are covered.

No, the sea is not cooler than August in most of the Med. Sea temperatures peak in early to mid-September because they lag air temperatures. The water is genuinely warmer than it was in June.

Yes, the resorts are quieter, sometimes noticeably so. Kids' clubs may run at reduced capacity in smaller hotels but the bigger family-focused chains run the same programmes through to early October.

No, flight times do not change. The schedules stay the same as summer for most destinations until late October when the winter schedule kicks in.

Destinations to avoid in September and why

Caribbean: peak hurricane season. The risk is real and travel insurance excludes a lot of weather-related disruption. Wait until November or December.

Florida: also hurricane season and theme park crowds are still high until late September. Better in October.

North African coast (Tunisia, Morocco): the temperatures are dropping but the sea is still warm; the issue is reduced flight supply pushing prices up. Better in May or early June.

Iceland and northern Europe: summer is ending, the daylight is collapsing, and there is no September value here. Save these for May to August.

Family-of-four September savings checklist

Run through this checklist before booking and you will land somewhere close to the cheapest version of the trip you have in mind. Each item independently saves £50 to £200, and stacked together they reliably take 25 to 35 percent off the August quote you may have been looking at.

• Target the second or third week of September
• Avoid Saturday departures, prefer Tuesday or Wednesday
• Use a secondary airport within 90 minutes of home if cheaper
• Price package and DIY in parallel; either can win in September
• Pre-book transfers and airport parking, never on the day
• Take a Starling or Chase card for fee-free euro spending
• Set a per-child souvenir cap on day one and stick to it
• Check operator running promotions in August; September packages often launch then
• If pulling children out, write to the head three weeks ahead, not on the day

Why September keeps getting better for value

Demand for September has actually softened over the last three years as more families with school-age children have heard about and tried October half term. October half term has consequently become more competitive on price than it used to be, while September has quietly improved. The cheapest week of the school year is now a closer race than it was, but September still wins outright for families with full flexibility.

Operators have noticed too. Jet2 and TUI have both expanded their September supply on family routes since 2024, which means more available rooms at family-friendly resorts and more competitive pricing across the month. We are seeing September quotes 8 to 12 percent below the same trip a year earlier, even as August prices climbed.

The window will not stay this good forever. If you have flexible dates, the next two or three Septembers are likely the best value window for family travel in this decade. After that, demand will catch up and operators will tighten supply.