$300 Cheap Flights from London (LHR) to Mariehamn (MHQ)

View $300 flight on Sat, Oct 11, 2025Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Mariehamn (MHQ)

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Cheap Flights from London to Mariehamn (LHR-MHQ)

Prices were available within the past 7 days and start at $300 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from London (LHR) to Mariehamn (MHQ)
Origin airport
Heathrow
Destination airport
Mariehamn
Distance
984 mi

London to Mariehamn Flights

The cheapest times to fly from London to Mariehamn

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to Mariehamn are during the month of . You can find some of the cheapest flights from London to Mariehamn with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to Mariehamn

Sunday is one of the best days to book for cheap flights from London to Mariehamn: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to Mariehamn

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to Mariehamn in 2025. You can also book with separate airlines for your outbound and return journeys, from $300 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to Mariehamn flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to Mariehamn airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Heathrow Airport (LHR) to Mariehamn Airport (MHQ) cost?
Discover the latest flight deals from LHR to MHQ by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from LHR to MHQ?
The cheapest flights from LHR to MHQ are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from LHR to MHQ?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from LHR to MHQ. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Heathrow Airport (LHR) to Mariehamn Airport (MHQ)?
There are no daily nonstop flights from Heathrow Airport (LHR) to Mariehamn Airport (MHQ). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from LHR to MHQ?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Heathrow Airport (LHR) to Mariehamn Airport (MHQ)?
To avoid possible delays on the Heathrow Airport (LHR) to Mariehamn Airport (MHQ) route, fly before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Heathrow Airport (LHR) to Mariehamn Airport (MHQ) last-minute?
Booking your plane ticket from LHR to MHQ right before your journey is usually more expensive. But if there's some wiggle room with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book a LHR to MHQ flight and hotel package?
Compared with arranging hotels and flights separately, booking a LHR to MHQ flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place takes the hassle out of planning your trip. Simply pick your flights and choose from our extensive range of hotels, then customize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Heathrow Airport (LHR) to Mariehamn Airport (MHQ)?
Typically, it's possible to reschedule or cancel your LHR to MHQ flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.