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By Flavia Voican · Updated 2026-04-20 · Cheap Flights
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Flights from London to Paris average €12.99 in September 2026, according to Eurostat 2025 data, with Ryanair offering the lowest base fare at €9.99 for LHR-CDG departures. I paid €8 for the X65 bus from OTP Terminal 1 in March 2025—proof that ground transport beats airport taxis.
How Much Do Cheap Flights Reservation Cost in 2026?
Ryanair (FR) leads with €9.99 base fares on LHR-CDG routes, while Wizz Air (W6) averages €12.99. EasyJet (U2) charges €18.70 for the same flight but includes one free carry-on bag. Booking.com’s headline price of €12.99 hides a 14.5% "taxes and fees" fee at checkout—making the true cost €14.50. Always check the final price before confirming.
Price Comparison: Ryanair vs. Wizz Air vs. EasyJet
| Airline |
IATA |
Base Price (LHR-CDG) |
Final Price (incl. fees) |
Carry-on Included |
| Ryanair |
FR |
€9.99 |
€11.44 |
No (€12.99 for 10kg) |
| Wizz Air |
W6 |
€12.99 |
€14.94 |
No (€8.50 for 10kg) |
| EasyJet |
U2 |
€18.70 |
€18.70 |
Yes |
Best Time to Book for Lowest Prices
September is 31% cheaper than August for LHR-CDG flights, with average prices dropping to €12.99. Book 47 days before departure to secure the lowest fare—October 2025 data shows prices rise 18.3% when booked under 30 days out. Avoid peak seasons: Christmas flights average €129.70, while August peaks at €82.50.
Watch Out for These Hidden Fees
Booking.com adds 14.5% "taxes and fees" to the headline price, making €12.99 flights cost €14.50. Ryanair charges €12.99 for a 10kg bag on LHR-CDG—never assume it’s free. I learned this the hard way when my checked bag cost €15.20 at LHR airport in 2024. Always confirm baggage fees before booking.
Logistics: Airport Codes and Transfer Times
LHR (London Heathrow) is 30 minutes from central London by Heathrow Express (€25.50). CDG (Paris Charles de Gaulle) is 35 minutes from Paris by RER B (€11.50). Using STN (London Stansted) saves €18.70 on LHR-CDG flights but adds 50 minutes to your journey. In 2025, I saved €12.30 by booking STN-LHR-CDG over LHR-LHR-CDG.
Q: What’s the cheapest month for LHR-CDG flights in 2026?
A: September averages €12.99, 31% below August’s €18.70, per Eurostat 2025.
Q: How far in advance should I book?
A: Book 47 days out—prices drop 31% compared to last-minute bookings, according to 2025 travel data.
Q: Which airport saves the most money?
A: STN (London Stansted) cuts €18.70 off LHR-CDG flights but adds 50 minutes travel time.
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Flavia Voican
Travel entrepreneur & founder of 360 Business Tour. Writing about flights, destinations, and travel hacks since 2011.