Cheap flights from London Heathrow to Portland Maine

from as little as £374

10 nights in Portland Maine, departing London Heathrow on 08 / Sep / 2025 with JetBlue (price found 29 hours ago)

Subject to availability, prices correct of the last 24 hours
Portland Maine

Cheap return flights from London Heathrow to Portland Maine

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The London Heathrow / Portland Maine route

All 5114 km of it

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Portland Maine flight facts

What you need to know

Alternative flights from the UK to Portland Maine

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Portland Maine

Today alone, Netflights has searched over 74 flights. 08 / Sep / 2025 is currently the lowest priced day of the year to fly the London Heathrow/Portland Maine route. There are around 37 flights on any given week from the UK to Portland Maine and the cheapest month to fly right now is September.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)
LOWEST

-8 °C

AVG

9 °C

HIGHEST

27 °C

Rainfall (mm)
LOWEST

65 mm

AVG

89.8 mm

HIGHEST

125 mm

Key facts about Portland Maine

How to get cheap flights from London Heathrow to Portland Maine

Tips and advice from our flight experts

Search for cheap flights and last-minute deals with Netflights. We've scanned all the flights from London Heathrow to Portland Maine, across the four airlines that offer this route. We've found that 08 / Sep / 2025 is the cheapest date to travel at the moment, but it's best to go through the results to see which flight suits you.

The most popular airlines offering flights to Portland Maine are British Airways, Aer Lingus & Virgin Atlantic. British Airways is the most popular one, but that doesn’t mean their flights will be the cheapest. If you can't find a flight time that suits you, why not look at flying out from a different airport?

The distance between London Heathrow to Portland Maine is 5114 km. Normally, it takes about 13 hrs 35 mins to fly, and you can definitely expect the journey to be at least 11 hrs 40 mins. You can see the various flight times in the results.

Searching by month, for instance, will show you the best time of the week to fly.

Other popular destinations near Portland Maine

Where other people are flying to

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