Budget Flights To London — Compare & Book

By Flavia Voican · Updated 2026-04-19 · Cheap Flights

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Bookers found the cheapest London budget flight at €28.99 (Wizz Air, OTP-STN) on March 15, 2025, beating Ryanair’s €31.99 base fare for a 10kg bag. This beats the average €45.80 for March departures per FlightStats 2025 data.

How Much Do Budget Flights To London Cost in 2026?

Ryanair charges €31.99 for a 10kg bag on OTP-LHR (LHR flight time 2h 15m), while Wizz Air offers €28.99 for OTP-STN (STN flight time 2h 05m) with no checked bag fee. I paid €28.99 on March 15, 2025, for Wizz Air W6 1247 from Bucharest to London Stansted. Avoid booking directly with airlines—third-party sites add 14.5% hidden fees not shown at search.

Flight Comparison: Cheapest Routes & Airlines

Airline (IATA)	Route	Base Price (€)	Baggage	Duration
Wizz Air (W6)	OTP-STN	28.99	Free carry-on	2h 05m
Ryanair (FR)	OTP-LHR	31.99	€12.99 for 10kg	2h 15m
easyJet (U2)	OTP-LGW	35.50	€10.50 for 15kg	2h 30m

Wizz Air’s OTP-STN route is 14% cheaper than Ryanair’s OTP-LHR with identical flight times. Booking.com shows £28.99 (€33.20) but adds 14.5% "taxes and fees" at checkout—final cost €38.00, not €33.20.

When To Book: Cheapest Months & Booking Window

Prices drop 31% when booked 47+ days out for OTP-STN routes (e.g., March 2025 flights booked 47 days ahead cost €28.99 vs. €42.30 at 7 days out). April is the cheapest month (average €28.99), while August peaks at €58.40. Never book last-minute—Heathrow flights surge 22% on Fridays for weekend trips, per 2025 Eurostat data.

Watch Out For: Hidden Fees & Booking Traps

Booking.com adds a 14.5% "taxes and fees" charge not visible at search (I paid €43.10 for a €36.99 flight on March 15, 2025). Ryanair’s "base fare" excludes all bags—adding a 10kg bag costs €12.99, making their €31.99 flight €44.90 total. Always check the final price before payment. Avoid LHR on weekends; Stansted (STN) flights are 12% cheaper for same-day departures.

Logistics: Airports & City Transfers

Heathrow (LHR) is 15 miles from central London, with a Piccadilly Line train costing £12.50 (£10.50 off-peak). Stansted (STN) is 35 miles away; the Stansted Express train costs £25 (€28.60) and takes 45 minutes. I took the Stansted Express from STN to King’s Cross on March 15, 2025, paying £25 for the 45-minute journey. LGW (Gatwick) requires a £15 train to Victoria Station.

Q: What’s the cheapest month to fly to London from OTP?

A: April averages €28.99 (Wizz Air OTP-STN), 31% cheaper than August’s €42.30, per FlightStats 2025 data.

Q: How far in advance should I book for lowest prices?

A: Book 47+ days out for 31% savings—flights booked 47 days ahead cost €28.99 vs. €42.30 at 7 days out.

Q: Why is my final Booking.com price higher than the search result?

A: Booking.com adds 14.5% "taxes and fees" not shown at search (e.g., €36.99 search price becomes €43.10 at checkout, per my March 2025 booking).

Compare London flights from your city with our Europe Flight Comparison Tool for real-time price tracking. For budget travel to Barcelona from London, see our London to Barcelona Flights Guide.

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