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Cheap flights from London Heathrow Airport to Mariehamn from £264

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport 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.
1 adult
0 bags
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Find the cheapest flights from London Heathrow Airport 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 - 17:05
MHQ
-
LHR
10h 40m
1 stop
£264Finnair
Sun, 28 Jun - Fri, 3 Jul
Finnair Logo
18:10 - 08:15
LHR
-
MHQ
12h 05m
1 stop
Finnair Logo
16:20 - 09:10
MHQ
-
LHR
18h 50m
1 stop
£337Finnair
Wed, 10 Jun - Sat, 13 Jun
Finnair Logo
18:10 - 22:05
LHR
-
MHQ
25h 55m
1 stop
Finnair Logo
16:20 - 09:10
MHQ
-
LHR
18h 50m
1 stop
£346Finnair
Wed, 10 Jun - Sat, 13 Jun
Finnair Logo
18:10 - 08:15
LHR
-
MHQ
12h 05m
1 stop
Finnair Logo
22:00 - 20:40
MHQ
-
LHR
24h 40m
1 stop
£346Finnair
Wed, 10 Jun - Sun, 14 Jun
Multiple Airlines Logo
21:05 - 10:35
LHR
-
MHQ
11h 30m
1 stop
Multiple Airlines Logo
08:25 - 17:05
MHQ
-
LHR
10h 40m
1 stop
£385Multiple Airlines
Sun, 28 Jun - Fri, 3 Jul
Multiple Airlines Logo
13:55 - 20:00
LHR
-
MHQ
4h 05m
1 stop
Multiple Airlines Logo
07:15 - 16:00
MHQ
-
LHR
10h 45m
2 stops
£466Multiple Airlines
Sun, 28 Jun - Fri, 3 Jul
Multiple Airlines Logo
19:50 - 21:35
LHR
-
MHQ
23h 45m
2 stops
Multiple Airlines Logo
17:10 - 09:35
MHQ
-
LHR
18h 25m
2 stops
£512Multiple Airlines
Sun, 28 Jun - Fri, 3 Jul
Multiple Airlines Logo
20:50 - 22:05
LHR
-
MHQ
23h 15m
3 stops
Multiple Airlines Logo
08:25 - 07:40
MHQ
-
LHR
25h 15m
2 stops
£548Multiple Airlines
Sun, 28 Jun - Fri, 3 Jul

Finnair flights from London Heathrow Airport to Mariehamn

Our best Finnair deals on London Heathrow Airport to Mariehamn flight tickets
Finnair
28 Jun
LHR13:35London Heathrow
6h 00m
1 stop
MHQ21:35Mariehamn
3 Jul
MHQ08:25Mariehamn
10h 40m
1 stop
LHR17:05London Heathrow
£264
Finnair
10 Jun
LHR18:10London Heathrow
12h 05m
1 stop
MHQ08:15Mariehamn
13 Jun
MHQ16:20Mariehamn
18h 50m
1 stop
LHR09:10London Heathrow
£337
Finnair
10 Jun
LHR18:10London Heathrow
25h 55m
1 stop
MHQ22:05Mariehamn
13 Jun
MHQ16:20Mariehamn
18h 50m
1 stop
LHR09:10London Heathrow
£346

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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 14 January 2026.
Use the filters below to find and compare flights from London Heathrow Airport 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

08:25-17:05

1 stop10h 40m

£264

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Wed 10/6

18:10-08:15

1 stop12h 05m

Mariehamn

Sat 13/6

16:20-09:10

1 stop18h 50m

£337

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

£346

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Wed 10/6

18:10-08:15

1 stop12h 05m

Mariehamn

Sun 14/6

22:00-20:40

1 stop24h 40m

£346

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Sun 28/6

21:05-10:35

1 stop11h 30m

Mariehamn

Fri 3/7

08:25-17:05

1 stop10h 40m

£385

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Sun 28/6

13:55-20:00

1 stop4h 05m

Mariehamn

Fri 3/7

07:15-16:00

2 stops10h 45m

£466

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Sun 28/6

19:50-21:35

2 stops23h 45m

Mariehamn

Fri 3/7

17:10-09:35

2 stops18h 25m

£512

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Sun 28/6

20:50-22:05

3 stops23h 15m

Mariehamn

Fri 3/7

08:25-07:40

2 stops25h 15m

£548

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from London Heathrow Airport to Mariehamn

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

Cheap London Heathrow Airport to Mariehamn (LHR to MHQ) flight deals and tips

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

Fastest flight time

6h 00m

Direct flights

None
The fastest flight from London Heathrow Airport to Mariehamn takes 6h 00m
There are no direct flights from London Heathrow Airport to Mariehamn. There are no popular flight routes from London Heathrow Airport to Mariehamn.
Search flight deals

  • How far is London Heathrow to Mariehamn by plane?

    Mariehamn is 984.1 mi away from London Heathrow. Flights usually cover this in 6h 00m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from London Heathrow Airport to Mariehamn Airport are refreshed on a daily basis.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Mariehamn Airport.

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

    The travel and health documents you'll need for your trip to Mariehamn Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Mariehamn Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

    Search flight deals from London Heathrow Airport to Mariehamn. While viewing offers you’ll have the option to create a Price Alert.

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

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Mariehamn . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Mariehamn from London with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Mariehamn from London.

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

If you are not ready to book a flight from London to Mariehamn now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Mariehamn and let you know when they change.

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