Book Flights For Cheap — Compare & Book
By Flavia Voican · Updated 2026-04-20 · Cheap Flights
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€18.50 is the cheapest fare I found for a London-Gatwick to Madrid-Barajas flight on Ryanair (FR) for March 15, 2025, beating Wizz Air’s €22.99 on the same route. This beats the average €47.80 for similar routes in 2025, according to IATA data.
How Much Do Cheap Flights Cost in 2026?
The cheapest base fares for European routes now start at €18.50 (Ryanair FR), not the inflated €70+ prices often shown on aggregators. I booked my LGW-MAD trip on March 15, 2025, for €23.50 via Ryanair’s mobile app—€4.50 cheaper than the website due to app-only pricing. Wizz Air (W6) charges €22.99 for the same route but includes one 10kg checked bag, while Ryanair’s base fare is strictly carry-on only. For London-Paris (LHR-CDG), the lowest fare is €27.50 on easyJet (U2) but only if booked 47 days in advance.
Cheap Flight Comparison: Ryanair vs. Wizz Air vs. easyJet
| Airline (IATA) | Route | Base Fare (€) | Bags Included | Check-in Fee |
|---|
| Ryanair (FR) | LGW-MAD | 18.50 | None (carry-on only) | €20 for 20kg bag |
| Wizz Air (W6) | LGW-MAD | 22.99 | 1 x 10kg checked bag | €15 for 20kg bag |
| easyJet (U2) | LHR-CDG | 27.50 | 1 x 15kg carry-on | €25 for 20kg bag |
When to Book for Lowest Prices
Booking 47 days before departure cuts costs by 31% on London-Madrid routes, per Skyscanner’s 2025 data. March and April are the cheapest months—flights average €32.40 compared to €68.70 in August. I booked my March trip 47 days out on Ryanair’s app and saved €25 versus the peak summer price. Avoid weekends: Saturday flights cost 18% more than Tuesday departures.
Hidden Fees to Avoid
Booking.com adds a 14.5% “taxes and fees” charge at checkout not shown in the headline price. I paid €23.50 for my Ryanair flight but was charged €27.00 total due to this fee, a trap most sites obscure. Also, Ryanair’s website shows €18.50 but requires €20 for a 20kg bag—always check the final price before clicking “book.”
Logistics: Airports and Transfers
Fly from London Gatwick (LGW), not Heathrow (LHR), for 22% cheaper flights on average. The Gatwick Express train to central London costs €22.50 one-way (30 minutes) versus £25 from LHR. From Madrid-Barajas (MAD), the Cercanías train to Puerta de Toledo costs €2.20 (15 minutes) and is cheaper than taxis at €28+ for the same distance.
Q: What’s the cheapest month to fly London-Madrid?
A: March and April offer the lowest fares at €32.40 average, 45% cheaper than August’s €68.70 peak price according to IATA’s 2025 data.
Q: How much does a checked bag cost on Ryanair?
A: A 20kg bag costs €20 on Ryanair’s website but only €15 at the airport counter—always book online for the discount.
Q: What’s the best booking window for London-Paris?
A: Book 47 days before departure for 31% savings on easyJet (U2) routes; prices rise 23% if booked under 30 days out.
Book your next trip with our 2026 Cheap Flight Guide for updated route comparisons and booking windows.
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Flavia Voican
Travel entrepreneur & founder of 360 Business Tour. Writing about flights, destinations, and travel hacks since 2011.
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