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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Flavia Voican
Travel entrepreneur & founder of 360 Business Tour. Writing about flights, destinations, and travel hacks since 2011.