The latest ratings from TripAdvisor show that the big three airlines are at the top of the heap in terms of value.
But they aren’t the only airlines offering cheap fares.
The UK’s three largest airlines have a combined fare of €89.60.
The cheapest route from London to Glasgow is €85.45, while the cheapest option from Glasgow to Paris is €74.95.
And the cheapest flight from Glasgow back to Paris costs just €55.50, according to TripAdverse.
That’s an extra €8.50 for the cheapest domestic flight in Paris.
There’s also a €20.20 discount for the fastest return flight from Paris to London, while a €10 discount for a return from London back to Glasgow.
The UK’s four biggest airlines are all available on the TripAdvent website.
The three largest routes to Paris include:United Airlines, which offers an economy class ticket for €89 and a business class for €118.
United is the most expensive route by far, but the cheapest by a small margin.
The United Express flight from London Gatwick to Paris Saint-Germain costs £140.50.
The cheapest United Express fare is from London Gdansk to Paris St Pancras at €65.50; the cheapest from London St Pancres to Paris Nice at €76.50.
“United Express has been the most popular carrier for passengers travelling to and from Europe in recent years.
The latest report from Tripadvisor says the airline now has almost 8.4 million frequent flyer members.
United Airlines’ business class fares have remained relatively stable over the past year, although its fares have risen significantly in recent months.
Its economy fares have increased by 10% since November, while its business class rates have increased almost 12%.
United also offers an oneworld alliance ticket for £150 and a no-show option for £165, and a domestic alliance ticket that can be booked for just £130.