Flight price alerts: London → Helsinki

Sample round trips on this route start around EUR 94; January 2027 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 94. Cheapest month in our next-3-month sample: January 2027.

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 · 4 nights
    Mon 18 Jan · 15:00
    Return Fri 22 Jan · 23:40

    EUR 94

    See deal
  • Round trip · 4 nights
    Mon 07 Dec · 06:50
    Return Fri 11 Dec · 23:40

    EUR 147

    See deal
  • Round trip · 2 nights
    Mon 14 Dec · 09:15
    Return Wed 16 Dec · 21:45

    EUR 152

    See deal
  • Round trip · 7 nights
    Sun 29 Nov · 07:15
    Return Sun 06 Dec · 12:35

    EUR 158

    See deal
  • Round trip · 6 nights
    Wed 18 Nov · 06:40
    Return Tue 24 Nov · 21:30

    EUR 170

    See deal
  • Round trip · 10 nights
    Sun 13 Dec · 04:30
    Return Wed 23 Dec · 19:50

    EUR 227

    See deal
  • Round trip · 3 nights
    Thu 24 Dec · 07:55
    Return Sun 27 Dec · 17:20

    EUR 229

    See deal
  • Round trip · 4 nights
    Tue 29 Dec · 06:20
    Return Sat 02 Jan · 19:45

    EUR 258

    See deal
  • Round trip · 6 nights
    Wed 23 Dec · 16:20
    Return Tue 29 Dec · 11:45

    EUR 284

    See deal

Frequently asked questions

How do I get email alerts when London to Helsinki flights drop in price?
Create a free FlexTrip Alerts tracker for London (All Airports) (LON) to Helsinki Vantaa Airport (HEL). 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 Helsinki?
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 Helsinki 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 Helsinki 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 Helsinki?
Based on recent fare samples on this page, January 2027 is currently the cheapest month to fly from London to Helsinki, with round trips from about EUR 94. Prices change — set an alert to catch the next drop.

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