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 $883 for a one-way ticket and $673 for a round-trip. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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?

Star Alliance, and SkyTeam 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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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 Delta ($673) and United Airlines ($735).

$673 CHEAP FLIGHTS from London to Portland (LHR - PWM)

LHR - PWM

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Cheap Flights from London to Portland (LHR-PWM)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to Portland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from London to Portland

Thu, Sep 4 - Thu, Sep 11

6:30 am - 12:48 amLHR-PWM

23h 18m2 stops

12:30 pm - 10:15 amPWM-LHR

16h 45m2 stops

$673Delta

Find Deal

Thu, Sep 4 - Thu, Sep 11

1:30 pm - 8:42 pmLHR-PWM

12h 12m1 stop

3:56 pm - 6:40 amPWM-LHR

9h 44m1 stop

$680

Find Deal

Tue, Jul 15 - Tue, Jul 22

9:30 am - 11:14 pmLHR-PWM

18h 44m1 stop

6:01 am - 10:10 amPWM-LHR

23h 09m1 stop

$735United Airlines

Find Deal

Tue, Dec 2 - Wed, Dec 17

8:45 am - 11:14 pmLHR-PWM

19h 29m2 stops

9:30 am - 6:40 amPWM-LHR

16h 10m2 stops

$760United Airlines

Find Deal

Wed, Aug 27 - Wed, Sep 3

11:45 am - 12:03 amLHR-PWM

17h 18m2 stops

1:34 pm - 11:25 amPWM-LHR

16h 51m2 stops

$775Virgin Atlantic

Find Deal

Tue, Jul 15 - Tue, Jul 22

8:15 am - 12:17 amLHR-PWM

21h 02m1 stop

6:05 am - 6:30 amPWM-LHR

19h 25m2 stops

$810Icelandair

Find Deal

Tue, Jul 15 - Tue, Jul 22

8:15 am - 12:17 amLHR-PWM

21h 02m1 stop

6:10 am - 6:30 amPWM-LHR

19h 20m2 stops

$844Icelandair

Find Deal

Thu, Sep 4 - Sat, Sep 13

6:40 am - 12:48 amLHR-PWM

23h 08m3 stops

6:30 am - 4:25 pmPWM-LHR

28h 55m2 stops

$860Scandinavian Airlines

Find Deal

Tue, Jul 15 - Tue, Jul 22

9:40 am - 12:38 amLHR-PWM

19h 58m2 stops

6:00 am - 6:20 amPWM-LHR

19h 20m2 stops

$862Virgin Atlantic

Find Deal

Thu, Sep 4 - Thu, Sep 11

6:40 am - 12:48 amLHR-PWM

23h 08m3 stops

6:30 am - 9:35 amPWM-LHR

22h 05m2 stops

$908Scandinavian Airlines

Find Deal

Useful Info

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.

Prices

Airlines

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 $677 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,259 and $1,233 respectively.

Find deals

Low season	November
High season	September
Cheapest flight	$673

Best time to beat the crowds with an average 15% drop in price.

Most popular time to fly and prices are also 17% lower on average.

Flight from London to Portland

When to book flights from London to Portland

Are your dates flexible? Find out the best times to travel from London to Portland based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

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 $883 for a one-way ticket and $673 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?
Star Alliance, and SkyTeam 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

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on your arrival and departure airports

London (LHR)

Portland (PWM)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

LHR - PWM

$673 Find Cheap Flights from London to Portland

KAYAK searches hundreds of travel sites at once for deals on flights to Portland

Cheap Flights from London to Portland (LHR-PWM)

Recent round-trip flight deals from London to Portland

Recent one-way flight deals from London to Portland

Recent last minute flight deals from London to Portland

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 $677 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,259 and $1,233 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 Delta ($673) and United Airlines ($735).

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 $883 for a one-way ticket and $673 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?

Star Alliance, and SkyTeam 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

Information on your arrival and departure airports

Cabin class types available on flights to Portland

Complete your trip to Portland with a hotel stay or car rental

Find direct flights to and from London and Portland

Flights to other popular destinations

Flights from domestic origins to Portland

Choose which airport to fly into in London

Find deals for your return flight