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Cheap flights from London Heathrow Airport to Mariehamn from £244

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — MHQ
22 Mar — 29 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Mariehamn

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Mariehamn
Explore the most affordable flight options available from Heathrow to Mariehamn. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2026.

Mon 22/607:30
LHR
-
MHQ
1 stop12h 35m
Finnair
Mon 29/622:30
MHQ
-
LHR
1 stop12h 40m
Finnair
Deal found 20/2£244
Sun 28/613:35
LHR
-
MHQ
1 stop6h 00m
Finnair
Fri 3/708:25
MHQ
-
LHR
1 stop14h 15m
Finnair
Deal found 20/2£264
Mon 6/407:30
LHR
-
MHQ
1 stop12h 20m
Finnair
Mon 13/422:15
MHQ
-
LHR
1 stop18h 55m
Finnair
Deal found 20/2£309
Sat 11/707:30
LHR
-
MHQ
1 stop6h 25m
Finnair
Sat 18/716:20
MHQ
-
LHR
1 stop18h 50m
Finnair
Deal found 20/2£314
Mon 6/407:30
LHR
-
MHQ
1 stop12h 20m
Multiple Airlines
Mon 13/417:10
MHQ
-
LHR
2 stops16h 30m
Multiple Airlines
Deal found 20/2£347
Wed 10/618:10
LHR
-
MHQ
1 stop25h 55m
Finnair
Sat 13/616:20
MHQ
-
LHR
1 stop26h 45m
Finnair
Deal found 19/2£375
Wed 10/618:10
LHR
-
MHQ
1 stop25h 55m
Finnair
Sun 14/622:00
MHQ
-
LHR
1 stop24h 40m
Finnair
Deal found 16/2£379

Find flight deals from Heathrow to Mariehamn

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Mariehamn (MHQ). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 20 February 2026.

Round-trip from

£244
Finnair
  • Finnair
  • 1/7-8/7
  • 2 total stops
  • 18h 15m total
  • London to Mariehamn
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 20 February 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Mariehamn that are best for you.

Fly from

Heathrow

Fly to

Mariehamn

Route

Depart

Return

Price

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Thu 2/7

16:10-08:00

1 stop13h 50m

Mariehamn

Thu 9/7

08:40-20:40

1 stop14h 00m

£244

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Mon 22/6

07:30-22:05

1 stop12h 35m

Mariehamn

Mon 29/6

22:30-09:10

1 stop12h 40m

£244

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Thu 25/6

18:10-08:00

1 stop11h 50m

Mariehamn

Thu 9/7

08:40-20:40

1 stop14h 00m

£244

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

£265

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Mon 6/4

07:30-21:50

1 stop12h 20m

Mariehamn

Mon 13/4

22:15-15:10

1 stop18h 55m

£309

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Wed 10/6

18:10-22:05

1 stop25h 55m

Mariehamn

Sat 13/6

16:20-17:05

1 stop26h 45m

£375

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Wed 10/6

18:10-22:05

1 stop25h 55m

Mariehamn

Sun 14/6

22:00-20:40

1 stop24h 40m

£379

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Mon 22/6

17:30-10:35

2 stops15h 05m

Mariehamn

Mon 29/6

07:15-16:25

2 stops11h 10m

£680

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Best time to book a flight from Heathrow to Mariehamn

Have a flexible travel schedule? Discover the best time to fly to Mariehamn from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Mariehamn. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Mariehamn from London Heathrow?

    Located just 2.1 mi from the city center, Mariehamn is the airport most travelers will use when flying to Mariehamn from London Heathrow. Booking flights from London Heathrow to Mariehamn (MHQ) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 0 different airlines.

  • How long is the flight from London Heathrow Airport to Mariehamn?

    For as low as £244, Finnair can have you in Mariehamn from London Heathrow Airport in 12h 35m. London Heathrow Airport and Mariehamn are separated by a distance of 984 mi.

  • Can I find deals for flights from Heathrow to Mariehamn that include hotel bookings?

    Yes. In addition to deals on Heathrow to Mariehamn flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Mariehamn?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Mariehamn.

  • Can I find deals for business class flights from Heathrow to Mariehamn?

    Yes. Cheapflights offers flight deals from Heathrow to Mariehamn by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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How does Cheapflights help users find flights from Heathrow to Mariehamn?

Deals for Heathrow to Mariehamn flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Mariehamn?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Mariehamn.

Can Cheapflights find flights from Heathrow to Mariehamn with no change fees?

Yes, we can. To see specific flights from Heathrow to Mariehamn with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Heathrow to Mariehamn become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Mariehamn from Heathrow today and book when prices fit your budget.

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