**For the trips you describe, continuing with low-cost airlines makes sense.** If you are happy with the experience and the total cost is around €200, paying €1,000–2,000 needs a substantial practical benefit.

I would first check the price comparison. Full-service airlines sell several kinds of economy tickets as well as business class. Check that you are comparing the same dates, return journeys, cabin and refund conditions. A €1,000–2,000 quote could reflect a flexible fare, business class or limited availability; the airline name alone cannot explain the difference. British Airways has a [low-fare finder](https://www.britishairways.com/travel/low-price-finder/public/en_gb) that helps check cheaper economy options.

The strongest reasons to pay more are:

- **A better timetable.** An early arrival and late return can give you another usable day at your destination or save a hotel night. That can matter on leisure trips as well as business trips.
- **More options after a disruption.** Check the actual route: an airline operating several flights a day gives you more potential replacement departures. Partner airlines can add options; BA, for example, says it rebooks disrupted connections onto available BA or partner flights. Availability still matters. [BA disruption policy](https://www.britishairways.com/content/information/delayed-or-cancelled-flights)
- **Protected connections.** When you need multiple flights, a through booking makes the airline responsible for handling a missed connection caused by its disruption. BA explicitly distinguishes this from separately booked flights. This advantage becomes much more relevant when your travel extends beyond direct European routes. [BA connection policy](https://www.britishairways.com/content/information/delayed-or-cancelled-flights)
- **Ticket flexibility.** If your plans might change, a fare with useful change or refund conditions can save money. You must buy the appropriate fare: Lufthansa’s European fare table shows different conditions for Light, Classic and Flex tickets. [Lufthansa fare conditions](https://www.lufthansa.com/xx/tr/europa-tarife-economy-class)
- **A competitive total price with luggage.** Included baggage can narrow the gap. It depends on the ticket: BA’s Standard/Plus fares include checked baggage, while Basic does not. Compare the final price for everything you need. [BA baggage fare types](https://www.britishairways.com/content/information/help/faq/baggage/some-checked-in-and-some-not)

Two qualifications matter. **Full-service economy does not guarantee ample legroom**; check the aircraft and seat you would actually book. Also, EU passenger rights apply to low-cost airlines too, so cancellation assistance and compensation are legal entitlements, subject to the applicable conditions. [EU passenger rights](https://europa.eu/youreurope/citizens/travel/passenger-rights/air/index_en.htm)

For your situation, the sensible question is what a particular flight buys you. A modest premium for a useful airport or timetable may be worthwhile. An extra thousand euros for a short flight is hard to justify when the cheaper option already meets your needs.