London to Helsinki

Finnair is your only nonstop · 3 cabins reviewed

In business class, Finnair's Business Class (A350-900) dominates the field with a 7.3/10.Finnair is the only carrier offering premium economy on this route, scoring 5.2/10.

How we score → Last updated June 2026

Quick pick

Best business class:clear winner

Fly Finnair. It has 14 more inches of legroom and a wider seat (23" vs 18").

A noticeably better product that justifies the pick.

Best economy:clear winner

Fly Finnair. It has 2 more inches of legroom.

Worth picking even at a small price premium.

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Lie-flat · 1-2-1 · 45" pitchReliablePoints: Amex MR, Capital One, Citi TYP

More legroom + Full power outlets + Lie-flat seat

7.3

Very good

Seat 6.9·Amenity 7.9

recliner · 2-2 · 31" pitch · No powerReliablePoints: Amex MR, Capital One, Citi TYP

1.9

Below average

Seat 1.0·Amenity 3.3

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You might get a different plane on Finnair: A350-900 (7.3) vs A321neo (1.9). The A350-900 is noticeably better. Look for it when booking.

Data verified June 2026

Find your flight

Aisle access78" bedFree Wi-Fi18" screen

Finnair LHR–HEL on Google Flights →

New routes and airlines added regularly. One short email when we do.

Airlines on this route

Finnair

Routes with head-to-head comparisons

No competing nonstop on LHR ↔ HEL. These routes from the same airports have multiple carriers to compare.

JFK ↔ LHR5 airlines competing BOS ↔ LHR5 airlines competing LAX ↔ LHR4 airlines competing ORD ↔ LHR3 airlines competing MIA ↔ LHR3 airlines competing SFO ↔ LHR3 airlines competing

Flying with family

Seatback screens on Finnair. Finnair: bring your own device.
Most legroom: Finnair (31"). Least: Finnair (29"). That 2" difference matters with kids.
Power outlets on Finnair. Keep tablets charged.

Route insights

In business class, Finnair's Business Class (A350-900) dominates the field with a 7.3/10.
Finnair is the only carrier offering premium economy on this route, scoring 5.2/10.
In economy, Finnair's Economy (A350-900) dominates the field with a 5.1/10.

Search LHR ↔ HEL on Google Flights

Frequently asked

What are the best seats in Finnair Business Class on LHR-HEL?

Best: Window seats (A/K) in rows 3-5 offer most privacy. The AirLounge design has no traditional recline — legrest extends to create a flat bed. Avoid: Center pair (D/G) in row 2 — closest to galley. Last row of business near lavatory. 43 AirLounge seats in 1-2-1. Unconventional design: no traditional recline button. Seat widens and legrest extends to create flat bed. Marimekko textiles. Free Viasat WiFi for all business passengers.

What are the best seats in Finnair Premium Economy on LHR-HEL?

Best: Window pairs (A-B, J-K) avoid the 4-abreast center block. Avoid: Center middle seats (D/E) — no direct aisle access. 24 premium economy seats with legrest. 38-inch pitch. Seatback IFE. Power at every seat. Enhanced meal service.

What are the best seats in Finnair Economy on LHR-HEL?

Best: Exit row seats for extra legroom. Window seats forward of wing. Avoid: Last rows near lavatories. Center seat in any 3-abreast block. 211 economy seats in 3-3-3. 31-inch pitch. Seatback IFE at every seat. Power (USB + AC) at every seat. Complimentary meals. Viasat WiFi available for purchase.

What are the best seats in Finnair Business Class on LHR-HEL?

Best: Row 1 (A/C) — extra legroom with no seat in front. Any window seat for elbow room with blocked middle. Avoid: Last row of business cabin — near curtain and foot traffic. Standard euro-business: same seat as economy with blocked middle. No in-seat power on A321 fleet. Free Viasat WiFi for business. Hot meal with Iittala glassware. Marimekko textiles.

What are the best seats in Finnair Economy on LHR-HEL?

Best: Exit row seats for extra legroom. Avoid: Last rows. No power outlets anywhere in economy on the A321. 176 economy seats in 3-3. 29-inch pitch. No seatback IFE — streaming via Nordic Sky portal on personal devices. No power outlets. Viasat WiFi available for purchase.