Question 1

What is the cheapest flight from London Heathrow Airport to Portland?

Accepted Answer

In the last 3 days, the lowest price for a flight from London Heathrow Airport to Portland was $570 for a one-way ticket and $660 for a round-trip. <a href='/flight-routes/London-Heathrow-LHR/Portland-PWM'>Visit our flight page for the latest deals!>/a>

Question 2

Do I need a passport to fly between London and Portland?

Accepted Answer

Yes, you'll most likely have to show a valid passport before boarding the plane in London and on arrival in Portland. <a href='/flight-routes/London-Heathrow-LHR/Portland-PWM'>Visit our flight page for the latest deals!>/a>

Question 3

Which aircraft models fly most regularly from London to Portland?

Accepted Answer

We unfortunately don’t have that data for this specific route.

Question 4

Which airline alliances offer flights from London to Portland?

Accepted Answer

SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between London and Portland, with Star Alliance being the most commonly used for this route.

Question 5

What is the cheapest month to fly from London Heathrow Airport to Portland?

Accepted Answer

The cheapest month for flights from London Heathrow Airport to Portland is February, where tickets cost $691 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,218 and $1,114 respectively.

Question 6

How does KAYAK find such low prices on flights from London to Portland?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Portland. <a href='/flight-routes/London-Heathrow-LHR/Portland-PWM'>Visit our flight page for the latest deals!>/a>

Question 7

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Portland?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from London is likely to change within 7 days, so travelers know whether to wait or book now. <a href='/flight-routes/London-Heathrow-LHR/Portland-PWM'>Visit our flight page for the latest deals!>/a>

Question 8

What is the Hacker Fare option on flights from London to Portland?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portland with an airline and back to London with another airline. Booking your flights between London and PWM can sometimes prove cheaper using this method. <a href='/flight-routes/London-Heathrow-LHR/Portland-PWM'>Visit our flight page for the latest deals!>/a>

Question 9

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Portland?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portland from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. <a href='/flight-routes/London-Heathrow-LHR/Portland-PWM'>Visit our flight page for the latest deals!>/a>

Question 10

Which airlines provide the cheapest flights from London to Portland?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from London to Portland were found on JetBlue ($660) and Icelandair ($719).

Low season	November
High season	August
Cheapest flight	$570

LHR - PWM

$570 Find Cheap Flights from London to Portland

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Cheap Flights from London to Portland

Recent round-trip flight deals from London to Portland

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KAYAK's insights & trends for London to Portland flights

Get data-powered insights and trends into flights from London to Portland to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from London Heathrow Airport to Portland?

The cheapest month for flights from London Heathrow Airport to Portland is February, where tickets cost $691 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,218 and $1,114 respectively.

Which airlines provide the cheapest flights from London to Portland?

In the past 3 days, the cheapest round-trip tickets from London to Portland were found on JetBlue ($660) and Icelandair ($719).

Good to know

When to book flights from London to Portland

FAQs for booking London to Portland flights

What is the cheapest flight from London Heathrow Airport to Portland?

In the last 3 days, the lowest price for a flight from London Heathrow Airport to Portland was $570 for a one-way ticket and $660 for a round-trip.

Do I need a passport to fly between London and Portland?

Yes, you'll most likely have to show a valid passport before boarding the plane in London and on arrival in Portland.

Which aircraft models fly most regularly from London to Portland?

We unfortunately don’t have that data for this specific route.

Which airline alliances offer flights from London to Portland?

SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between London and Portland, with Star Alliance being the most commonly used for this route.

How does KAYAK find such low prices on flights from London to Portland?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Portland.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Portland?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from London is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from London to Portland?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portland with an airline and back to London with another airline. Booking your flights between London and PWM can sometimes prove cheaper using this method.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Portland?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portland from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from London to Portland

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