Home / London /Heathrow / Heathrow Express vs RailAir RA2 and South Western Railway to Southampton

LHR → London · head to head

Heathrow ExpressorRailAir RA2 and South Western Railway to Southampton?

The short answer

These do not go to the same place, so price is not the comparison. The Heathrow Express reaches Paddington, and the whole of Zone 1 beyond it; the RailAir RA2 and South Western Railway to Southampton does not. This goes to Southampton, not London: it ends at Southampton Central, about a mile from the City and Horizon cruise terminals.

The Heathrow Express is quicker: 15 min against 1 h 44. The RailAir RA2 and South Western Railway to Southampton varies between 100 and 125 minutes.

Heathrow Express: hours not recorded. RailAir RA2 and South Western Railway to Southampton: 04:50–22:20.

Priced against each other

Whole-party totals · adult fares
What each costs for the whole party, in GBP. The cheaper of the two is marked on every row.
TravelersHeathrow ExpressRailAir RA2 and South Western Railway to SouthamptonDifference
1£26£48.30£22.30
2£52£96.60£44.60
3£78£144.90£66.90
4£104£193.20£89.20
5£130£241.50£111.50
6£156£289.80£133.80
7£182£338.10£156.10
8£208£386.40£178.40

Side by side

Where each one leaves you
Heathrow Express · Heathrow ExpressHeathrow Express
From
Terminals 2 & 3 and Terminal 5; Terminal 4 by a free four-minute transfer train
To
London Paddington, and nowhere else
Luggage
Racks throughout; it is built as an airport train.
Journey
15–21 min

£26.00 against £5.90 on the Underground is 4.4 times the fare to save about 35 minutes — roughly £34 an hour, before you count what the cap would have saved you.

It does not count towards the daily cap. TfL states that Heathrow Express journeys "are not included in caps and Travelcards", so a same-day return is £52.00 and caps at nothing.

It goes to Paddington and nowhere else. If Paddington is not your destination, add a further journey and its fare to everything above.

Terminal 5 adds five or six minutes to the quoted fifteen — the operator says six, the airport says five.

The first departure from the airport is not stated here: the operator publishes the first train from Paddington at 04:34 Monday to Saturday and the last from Terminal 5 at 23:57, but does not publish a first departure from the airport itself.

Heathrow Express: price for every party size

Check fares with Heathrow Express
RA2SWR · RailAir and South Western RailwayRailAir RA2 and South Western Railway to Southampton
From
Terminal 3 (Stands 7/8), Terminal 2 (Stands 11/12) or Terminal 5, on the RailAir RA2 coach
To
Southampton Central, changing at Woking
Luggage
The RA2 coach takes 2 bags of up to 30 kg and hand luggage per person; extra bags are £5 each. The train has racks.
Runs
04:50–22:20
Journey
100–125 min

The through ticket is only valid via Woking: a ticket by any other route costs more.

The train from Woking runs hourly, so a missed connection costs close to an hour.

RailAir RA2 and South Western Railway to Southampton: price for every party size

Check times and fares with National Rail

This compares two of 12 options. See all of them ranked for your party size

The other comparisons at Heathrow