FlexTrip Alerts

Flight price alerts: London → Madrid

Sample round trips on this route start around EUR 47; September 2026 is often the cheapest month in our next-3-month window. FlexTrip Alerts is a free email service — set flexible travel dates and a max price, and we notify you when a round trip fits. We check fares about four times per day; we do not sell tickets.

Set a free tracker with flexible dates and your max price. We email you only when a round trip fits.

Sample fares from EUR 47. Cheapest month in our next-3-month sample: September 2026.

Set an alert and we email you when a round trip drops under your limit.

Set a price alert

Round trips on this route

Cheapest-seen sample fares (next 3 months) — confirm the final price on the booking site when you click through.

Last updated .

  • Round trip · 7 nights
    Wed 09 Sept · 06:00
    Return Wed 16 Sept · 22:20

    EUR 47

    See deal
  • Round trip · 6 nights
    Sun 13 Sept · 07:35
    Return Sat 19 Sept · 11:05

    EUR 54

    See deal
  • Round trip · 3 nights
    Sat 26 Sept · 19:50
    Return Tue 29 Sept · 07:20

    EUR 54

    See deal
  • Round trip · 3 nights
    Sat 12 Sept · 08:45
    Return Tue 15 Sept · 07:20

    EUR 73

    See deal
  • Round trip · 1 night
    Fri 18 Sept · 08:40
    Return Sat 19 Sept · 18:00

    EUR 76

    See deal
  • Round trip · 2 nights
    Sat 10 Oct · 19:50
    Return Mon 12 Oct · 15:25

    EUR 77

    See deal
  • Round trip · 1 night
    Sat 12 Sept · 06:20
    Return Sun 13 Sept · 05:45

    EUR 80

    See deal
  • Round trip · 4 nights
    Wed 02 Sept · 12:05
    Return Sun 06 Sept · 05:45

    EUR 81

    See deal
  • Round trip · 6 nights
    Thu 10 Sept · 06:00
    Return Wed 16 Sept · 10:15

    EUR 82

    See deal
  • Round trip · Same day · 7h 55m at destination
    Fri 18 Sept · 08:40
    Return Fri 18 Sept · 22:30

    EUR 86

    See deal
  • Round trip · 3 nights
    Fri 04 Sept · 15:25
    Return Mon 07 Sept · 12:30

    EUR 92

    See deal
  • Round trip · 9 nights
    Fri 28 Aug · 08:00
    Return Sun 06 Sept · 05:45

    EUR 96

    See deal
  • Round trip · 2 nights
    Fri 09 Oct · 18:25
    Return Sun 11 Oct · 05:45

    EUR 97

    See deal
  • Round trip · 21 nights
    Thu 10 Sept · 15:15
    Return Thu 01 Oct · 12:30

    EUR 103

    See deal
  • Round trip · 22 nights
    Thu 10 Sept · 15:15
    Return Fri 02 Oct · 12:30

    EUR 105

    See deal

Frequently asked questions

How do I get email alerts when London to Madrid flights drop in price?
Create a free FlexTrip Alerts tracker for London (All Airports) (LON) to Adolfo Suarez Madrid Barajas Airport (MAD). Choose your flexible departure window, stay length, and maximum price — we email you when a round trip fits.
Does FlexTrip Alerts book flights from London to Madrid?
No — we do not sell tickets. FlexTrip Alerts watches prices and emails you when a fare matches your plan. You book on the airline or travel site you prefer when you receive an alert.
Can I set flexible travel dates for London to Madrid alerts?
Yes. Pick a departure window (not one fixed day) and how many nights you can stay. We match round trips that fit your window, stay length, and max price — then email you when one qualifies.
How often does FlexTrip Alerts check London to Madrid fares?
We scan aggregated fares on a schedule — about four times per day (every ~6 hours, UTC). You can also trigger an on-demand check from your dashboard, with a short cooldown between manual refreshes.
What is the cheapest month to fly from London to Madrid?
Based on recent fare samples on this page, September 2026 is currently the cheapest month to fly from London to Madrid, with round trips from about EUR 47. Prices change — set an alert to catch the next drop.

More routes from London

View all 35 routes from London

Set alerts for other destinations from London (All Airports) (LON).

London (LON) → Barcelona (BCN)London (LON) → New York (JFK)London (LON) → Athens (ATH)London (LON) → Lisbon (LIS)London (LON) → Dublin (DUB)London (LON) → Edinburgh (EDI)

Flying to Madrid?

See all 8 departure cities with price alerts into Adolfo Suarez Madrid Barajas Airport (MAD).

View routes to Madrid