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Cheap flights from London to Mariehamn from £266

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London to Mariehamn departing on 28/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from London to Mariehamn

Cheap return flights

Enter your travel dates to find the best prices.
Finnair Logo
13:35 - 21:35
LHR
-
MHQ
6h 00m
1 stop
Finnair Logo
08:25 - 20:40
MHQ
-
LHR
14h 15m
1 stop
£266Finnair
Sun, 28 Jun - Fri, 3 Jul
Finnair Logo
18:10 - 22:05
LHR
-
MHQ
25h 55m
1 stop
Finnair Logo
16:20 - 09:10
MHQ
-
LHR
18h 50m
1 stop
£349Finnair
Wed, 10 Jun - Sat, 13 Jun
Finnair Logo
07:30 - 16:05
LHR
-
MHQ
6h 35m
1 stop
Finnair Logo
16:20 - 17:05
MHQ
-
LHR
26h 45m
1 stop
£356Finnair
Wed, 10 Jun - Sat, 13 Jun

Finnair flights from London to Mariehamn

Our best Finnair deals on London to Mariehamn flight tickets
Finnair
28 Jun
LHR13:35London Heathrow
6h 00m
1 stop
MHQ21:35Mariehamn
3 Jul
MHQ08:25Mariehamn
14h 15m
1 stop
LHR20:40London Heathrow
£266
Finnair
10 Jun
LHR18:10London Heathrow
25h 55m
1 stop
MHQ22:05Mariehamn
13 Jun
MHQ16:20Mariehamn
18h 50m
1 stop
LHR09:10London Heathrow
£349
Finnair
10 Jun
LHR07:30London Heathrow
6h 35m
1 stop
MHQ16:05Mariehamn
13 Jun
MHQ16:20Mariehamn
26h 45m
1 stop
LHR17:05London Heathrow
£356

momondo Fare Finder

 
Customise your flight search to find flights from London to Mariehamn that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 7 February 2026.
Use the filters below to find and compare flights from London to Mariehamn that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Sun 28/6

13:35-21:35

1 stop6h 00m

Mariehamn

Fri 3/7

08:25-20:40

1 stop14h 15m

£266

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Wed 10/6

18:10-22:05

1 stop25h 55m

Mariehamn

Sat 13/6

16:20-09:10

1 stop18h 50m

£349

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Wed 10/6

07:30-16:05

1 stop6h 35m

Mariehamn

Sat 13/6

16:20-17:05

1 stop26h 45m

£356

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from London to Mariehamn

Are you open to changing your travel dates? Check out the ideal times to fly from London to Mariehamn according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Mariehamn (LON to MHQ) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Mariehamn

Fastest flight time

6h 00m

Direct flights

None
The fastest flight from London to Mariehamn takes 6h 00m
There are no direct flights from London to Mariehamn. There are no popular flight routes from London to Mariehamn.
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  • How far is London to Mariehamn by plane?

    There are 972.7 mi between London and Mariehamn. By plane, this route typically takes 6h 00m.

  • When did momondo last update prices for flights from London to Mariehamn Airport?

    Prices for flights from London to Mariehamn Airport were last updated today.

  • How old do you have to be to fly from London to Mariehamn Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Mariehamn Airport.

  • What documentation or ID do you need to fly to Mariehamn Airport?

    The necessary travel and health documents for your Mariehamn Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from London to Mariehamn?

    Confirm your travel details to search for the latest offers for flights from London to Mariehamn. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from London to Mariehamn with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

Why should I use momondo to find a flight deal from London to Mariehamn?

Finding the right flight to Mariehamn from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Mariehamn quick and easy, saving you time and money.

Can I find flights from London to Mariehamn with flexible booking policies on momondo?

Yes. All flights to Mariehamn from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Mariehamn?

momondo helps you find the best flight between London and Mariehamn by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Mariehamn right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Mariehamn flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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