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Cheap flights from London Heathrow Airport to Mariehamn from £231

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — MHQ
20 Jul — 27 Jul1
1 adult

Cheap 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 15 July 2025.

Round-trip from

£231
Finnair
  • Finnair
  • 29/8-5/9
  • 2 total stops
  • 19h 45m total
  • London to Mariehamn

Find flight deals from Heathrow to Mariehamn

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 15 July 2025.

Fri 29/813:00LHR - MHQ
1 stop7h 10mFinnair
Fri 5/922:35MHQ - LHR
1 stop12h 35mFinnair
Deal found 15/7£231
Sun 16/1108:50LHR - MHQ
1 stop9h 10mMultiple Airlines
Tue 18/1117:10MHQ - LHR
1 stop6h 10mMultiple Airlines
Deal found 14/7£264

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 15 July 2025.
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

Fri 29/8

13:00-22:10

1 stop7h 10m

Mariehamn

Fri 5/9

22:35-09:10

1 stop12h 35m

£231

LondonMariehamn

LHR - MHQ

LHRMHQ

London Heathrow

Sun 16/11

08:50-20:00

1 stop9h 10m

Mariehamn

Tue 18/11

17:10-21:20

1 stop6h 10m

£264

Flights are sorted by cheapest return flights first.

Deals found on 15/7

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.

Reviews of airlines servicing Mariehamn

Get insights into the airlines that provide service to Mariehamn. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Mariehamn. Reviews last updated 15 July 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Mariehamn, such as Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.1

Boarding

7.6

Entertainment

6.9

Comfort

7.5

Food

6.7

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Crew

8.1

Boarding

7.6

Entertainment

6.9

Comfort

7.5

Food

6.7

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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.

  • 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.

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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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