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Cheap flights from London Heathrow Airport to Mariehamn from £294

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 11/10. 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
1 adult, Economy, 0 bags
Voted winner of Europe's Best Travel App 2023

Find the cheapest flights from London Heathrow Airport to Mariehamn

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:40 - 20:00
LHR
-
MHQ
11h 20m
1 stop
Multiple Airlines Logo
07:15 - 12:55
MHQ
-
LHR
7h 40m
1 stop
£295Multiple Airlines
Sun, 11 Oct - Wed, 14 Oct
Multiple Airlines Logo
06:40 - 21:35
LHR
-
MHQ
12h 55m
1 stop
Multiple Airlines Logo
17:10 - 19:55
MHQ
-
LHR
4h 45m
1 stop
£309Multiple Airlines
Mon, 13 Jul - Thu, 16 Jul
Multiple Airlines Logo
13:55 - 21:35
LHR
-
MHQ
5h 40m
1 stop
Multiple Airlines Logo
17:10 - 21:20
MHQ
-
LHR
6h 10m
1 stop
£312Multiple Airlines
Wed, 14 Oct - Thu, 15 Oct
Multiple Airlines Logo
13:55 - 20:00
LHR
-
MHQ
4h 05m
1 stop
Multiple Airlines Logo
17:10 - 21:20
MHQ
-
LHR
6h 10m
1 stop
£315Multiple Airlines
Sun, 11 Oct - Tue, 13 Oct
Multiple Airlines Logo
07:05 - 21:35
LHR
-
MHQ
12h 30m
2 stops
Multiple Airlines Logo
17:10 - 19:55
MHQ
-
LHR
4h 45m
1 stop
£315Multiple Airlines
Mon, 13 Jul - Wed, 15 Jul
Multiple Airlines Logo
09:55 - 22:05
LHR
-
MHQ
10h 10m
2 stops
Multiple Airlines Logo
17:10 - 21:20
MHQ
-
LHR
6h 10m
1 stop
£316Multiple Airlines
Thu, 16 Jul - Fri, 17 Jul
Multiple Airlines Logo
09:55 - 21:35
LHR
-
MHQ
9h 40m
1 stop
Multiple Airlines Logo
17:10 - 21:20
MHQ
-
LHR
6h 10m
1 stop
£318Multiple Airlines
Thu, 16 Jul - Fri, 17 Jul
Multiple Airlines Logo
09:55 - 22:05
LHR
-
MHQ
10h 10m
2 stops
Multiple Airlines Logo
17:10 - 19:55
MHQ
-
LHR
4h 45m
1 stop
£321Multiple Airlines
Tue, 14 Jul - Wed, 15 Jul
Multiple Airlines Logo
09:55 - 21:35
LHR
-
MHQ
9h 40m
1 stop
Multiple Airlines Logo
17:10 - 21:20
MHQ
-
LHR
6h 10m
1 stop
£324Multiple Airlines
Tue, 14 Jul - Thu, 16 Jul
Multiple Airlines Logo
06:40 - 21:35
LHR
-
MHQ
12h 55m
1 stop
Multiple Airlines Logo
17:10 - 21:20
MHQ
-
LHR
6h 10m
1 stop
£325Multiple Airlines
Mon, 13 Jul - Fri, 17 Jul

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Finnair flights from London Heathrow Airport to Mariehamn

Our best Finnair deals on London Heathrow Airport to Mariehamn flight tickets
Finnair
25 Jun
LHR16:10London Heathrow
13h 50m
1 stop
MHQ08:00Mariehamn
29 Jun
MHQ22:30Mariehamn
12h 40m
1 stop
LHR09:10London Heathrow
£342
Finnair
10 Oct
LHR18:10London Heathrow
25h 20m
1 stop
MHQ21:30Mariehamn
16 Oct
MHQ10:10Mariehamn
12h 30m
1 stop
LHR20:40London Heathrow
£395
Finnair
14 Sept
LHR07:30London Heathrow
12h 30m
1 stop
MHQ22:00Mariehamn
20 Sept
MHQ22:00Mariehamn
13h 10m
1 stop
LHR09:10London Heathrow
£410

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 12 June 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

Cheapest return flight

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Sun 11/10

06:40-20:00

1 stop11h 20m

Mariehamn

Wed 14/10

07:15-12:55

1 stop7h 40m

£294

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Mon 13/7

06:40-21:35

1 stop12h 55m

Mariehamn

Thu 16/7

17:10-19:55

1 stop4h 45m

£309

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Wed 14/10

13:55-21:35

1 stop5h 40m

Mariehamn

Thu 15/10

17:10-21:20

1 stop6h 10m

£312
Fastest return journey

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Sun 11/10

13:55-20:00

1 stop4h 05m

Mariehamn

Tue 13/10

17:10-21:20

1 stop6h 10m

£315

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Mon 13/7

07:05-21:35

2 stops12h 30m

Mariehamn

Wed 15/7

17:10-19:55

1 stop4h 45m

£315

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Thu 16/7

09:55-22:05

2 stops10h 10m

Mariehamn

Fri 17/7

17:10-21:20

1 stop6h 10m

£316

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Thu 16/7

09:55-21:35

1 stop9h 40m

Mariehamn

Fri 17/7

17:10-21:20

1 stop6h 10m

£318

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Tue 14/7

09:55-22:05

2 stops10h 10m

Mariehamn

Wed 15/7

17:10-19:55

1 stop4h 45m

£321

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Tue 14/7

09:55-21:35

1 stop9h 40m

Mariehamn

Thu 16/7

17:10-21:20

1 stop6h 10m

£324

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Mon 13/7

06:40-21:35

1 stop12h 55m

Mariehamn

Fri 17/7

17:10-21:20

1 stop6h 10m

£325

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

9h 00m

Direct flights

None
The fastest flight from London Heathrow Airport to Mariehamn takes 9h 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

Frequently asked questions about flying from London Heathrow Airport to Mariehamn

  • How far is London Heathrow to Mariehamn by plane?

    Mariehamn is 984.1 mi away from London Heathrow. Flights usually cover this in 9h 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.

Frequently asked questions about flying from London Heathrow Airport to Mariehamn

  • 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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