Which airports can I use when flying from Portland to London Heathrow Airport?

Flights from Portland to London Heathrow Airport usually depart from Portland (PWM) and arrive at London Heathrow (LHR).

Which cabin classes can I book on flights from Portland to London Heathrow Airport?

Only Economy class is available on flights from Portland to London Heathrow Airport.

Which airports do connecting flights from Portland to London Heathrow Airport pass through?

One-stop flights from Portland to London Heathrow Airport most commonly connect through: • Newark (EWR) – 41% of one-stop connections • New York John F Kennedy Intl (JFK) – 27% of one-stop connections • Philadelphia (PHL) – 27% of one-stop connections • Atlanta Hartsfield-Jackson (ATL) – 2% of one-stop connections

Can I save money by using flexible dates for flights from Portland to London Heathrow Airport?

Yes. Flexible dates can save you up to 48% on flights from Portland to London Heathrow Airport. Sunday is the cheapest departure day at £601 return on average, while Friday is the most expensive at £1,155, a difference of £554. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

What popular places can I visit in London Heathrow Airport?

Some of the most popular sights in London Heathrow Airport are Hyde Park, Tower Bridge, and Royal Albert Hall. These are among the most viewed places in London Heathrow Airport on KAYAK.

How long is a flight from Portland to London Heathrow Airport?

A direct flight from Portland to London Heathrow Airport takes 00m, covering 3,173 miles.

Do I need a passport to fly from Portland to London Heathrow Airport?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from Portland to London Heathrow Airport changed much recently?

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £580 to £4,368. That means the highest observed fare was about 8x higher than the lowest one.

How are flight prices from Portland to London Heathrow Airport looking right now?

One-way fares from Portland to London Heathrow Airport are currently lower than usual. Average one-way flight prices are about £284, which is 24% below the typical average for this route.

How much time can I save by choosing a different stopover airport from Portland to London Heathrow Airport?

Flying via Newark (EWR) gives the shortest average 1-stop total travel time of 10h 52m, compared to 11h 15m via Philadelphia (PHL) and 12h 26m via Chicago O'Hare Intl (ORD).

What is the time difference between Portland and London Heathrow Airport?

London Heathrow Airport is 5 hours ahead of Portland (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Which car hire options are available at London Heathrow Airport (LHR)?

London Heathrow Airport (LHR) hosts 5 major car hire companies, with daily rates averaging £29 for economy cars. Top options include: • GREEN MOTION • DRIVALIA • Europcar • Alamo • Rentacar

How much should I expect to pay for a Portland to London Heathrow Airport flight?

Return flights from Portland to London Heathrow Airport range from £569 to £824, with an average of £677 over the past 12 months. Anything below £569 counts as a good deal.

How much is a return flight from Portland to London Heathrow Airport?

Return flights from Portland to London Heathrow Airport typically range from £569 to £824. The lowest price found in the past 5 days was £580 on United Airlines.

What's the cheapest day of the week to fly from Portland to London Heathrow Airport?

Based on deals KAYAK users found in the last 12 months, Sunday is the cheapest day of the week to fly from Portland to London Heathrow Airport. It's 12% cheaper than the average day, while Friday is the most expensive, with prices 70% higher.

Which airline is the cheapest to fly from Portland to London Heathrow Airport?

United Airlines (£580) and Air Canada (£644) are the cheapest airlines to fly return from Portland to London Heathrow Airport according to KAYAK data over the last 5 days.

What is the most popular stopover airport when flying from Portland to London Heathrow Airport?

Newark (EWR) is the most popular stopover for the Portland to London Heathrow Airport route. 41% of KAYAK users who booked 1-stop return journeys over the past 3 months connected via EWR.

What is the cheapest stopover airport when flying from Portland to London Heathrow Airport?

Flights via Atlanta Hartsfield-Jackson (ATL) offer the most affordable fares, with an average return price of £654. Based on KAYAK data over the past 3 months.

When flying from Portland to London Heathrow Airport, which airport offers the shortest stopover?

Newark (EWR) had the shortest average connection time for Portland to London Heathrow Airport stopovers at 5h 57m over the past 3 months.

£262 CHEAP FLIGHTS from Portland to London (PWM - LHR)

Save 34% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest return flight

£580

Typical prices: £569-£824

United Airlines

Fri 2/3Mon 5/3

PWM - LHR • 2 stops

Cheapest one-way flight

£262

Typical prices: £249-£451

Delta

Fri 23/11

PWM - LHR • 1 stop

Direct flights

Not available

There are currently no direct flights between Portland and London Heathrow Airport. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

August

Cheapest • 16% price drop

May

Most popular

Good to know

Top stopover airports

Atlanta Hartsfield-Jackson (ATL)

Cheapest • Avg £654 (return)

Newark (EWR)

Shortest trip • 10h 52m (one-way)

Insights

Start a new search

KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you enjoy your trip to London Heathrow Airport!

Flight Deals

Cheap Flights from Portland to Heathrow (PWM-LHR)

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

Return

One-way

Last minute

Recent return flight deals from Portland to Heathrow

Tue, 2 Mar - Fri, 5 Mar

08:42 - 10:50PWM Portland-LHR London Heathrow

45h 08m2 stops Newark Washington, D.C. Dulles Intl

06:50 - 13:38LHR London Heathrow-PWM Portland

35h 48m2 stops Brussels Bruxelles-National Newark

£580United Airlines

Tue, 2 Mar - Fri, 5 Mar

16:40 - 07:55PWM Portland-LHR London Heathrow

34h 15m1 stop Chicago O'Hare Intl

06:50 - 13:38LHR London Heathrow-PWM Portland

35h 48m2 stops Brussels Bruxelles-National Newark

£581United Airlines

Tue, 2 Mar - Fri, 5 Mar

15:14 - 08:45PWM Portland-LHR London Heathrow

36h 31m2 stops Newark Frankfurt am Main

06:50 - 23:48LHR London Heathrow-PWM Portland

21h 58m2 stops Brussels Bruxelles-National Newark

£636United Airlines

Tue, 1 Dec - Wed, 9 Dec

06:00 - 21:00PWM Portland-LHR London Heathrow

34h 00m2 stops Newark Halifax Intl

09:00 - 21:12LHR London Heathrow-PWM Portland

41h 12m2 stops Halifax Intl Newark

£644Air Canada

Tue, 1 Dec - Wed, 9 Dec

12:49 - 07:45PWM Portland-LHR London Heathrow

13h 56m1 stop Detroit Metropolitan Wayne County

11:45 - 00:21LHR London Heathrow-PWM Portland

17h 36m2 stops Amsterdam Schiphol New York John F Kennedy Intl

£652KLM

Thu, 3 Dec - Mon, 7 Dec

14:15 - 10:50PWM Portland-LHR London Heathrow

15h 35m1 stop Washington, D.C. Dulles Intl

12:05 - 23:24LHR London Heathrow-PWM Portland

16h 19m2 stops Zurich Newark

£661United Airlines

Tue, 1 Dec - Sun, 6 Dec

15:20 - 06:20PWM Portland-LHR London Heathrow

10h 00m1 stop Newark

06:50 - 19:25LHR London Heathrow-PWM Portland

17h 35m2 stops Brussels Bruxelles-National Newark

£662United Airlines

Thu, 3 Dec - Mon, 7 Dec

09:12 - 06:40PWM Portland-LHR London Heathrow

16h 28m2 stops Newark Washington, D.C. Dulles Intl

12:05 - 23:24LHR London Heathrow-PWM Portland

16h 19m2 stops Zurich Newark

£664United Airlines

Tue, 1 Dec - Sun, 6 Dec

19:55 - 07:10PWM Portland-LHR London Heathrow

30h 15m2 stops Newark Montreal Pierre Elliott Trudeau Intl

06:50 - 19:25LHR London Heathrow-PWM Portland

17h 35m2 stops Brussels Bruxelles-National Newark

£665United Airlines

Fri, 4 Dec - Tue, 8 Dec

12:49 - 10:30PWM Portland-LHR London Heathrow

16h 41m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

10:00 - 23:33LHR London Heathrow-PWM Portland

18h 33m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

£667Delta

Recent last minute flight deals from Portland to Heathrow

Sun, 15 Nov - Thu, 19 Nov

15:40 - 09:10PWM Portland-LHR London Heathrow

12h 30m1 stop Newark

12:05 - 23:21LHR London Heathrow-PWM Portland

16h 16m2 stops Zurich Newark

£662United Airlines

Tue, 17 Nov - Tue, 24 Nov

08:49 - 09:10PWM Portland-LHR London Heathrow

19h 21m1 stop Newark

06:50 - 23:59LHR London Heathrow-PWM Portland

22h 09m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl

£662United Airlines

Sun, 15 Nov - Thu, 19 Nov

14:05 - 10:25PWM Portland-LHR London Heathrow

15h 20m2 stops Washington, D.C. Dulles Intl Newark

12:05 - 23:21LHR London Heathrow-PWM Portland

16h 16m2 stops Zurich Newark

£665United Airlines

Sun, 15 Nov - Tue, 24 Nov

11:59 - 07:55PWM Portland-LHR London Heathrow

14h 56m2 stops New York LaGuardia Paris Charles de Gaulle

06:30 - 23:21LHR London Heathrow-PWM Portland

21h 51m2 stops Amsterdam Schiphol New York John F Kennedy Intl

£666Delta

Sun, 15 Nov - Tue, 24 Nov

09:46 - 06:40PWM Portland-LHR London Heathrow

15h 54m1 stop Washington, D.C. Dulles Intl

12:05 - 23:59LHR London Heathrow-PWM Portland

16h 54m1 stop Washington, D.C. Dulles Intl

£685United Airlines

Tue, 17 Nov - Mon, 23 Nov

15:41 - 08:25PWM Portland-LHR London Heathrow

11h 44m1 stop Newark

12:50 - 23:21LHR London Heathrow-PWM Portland

15h 31m1 stop Newark

£686United Airlines

Thu, 19 Nov - Tue, 24 Nov

05:50 - 20:35PWM Portland-LHR London Heathrow

9h 45m1 stop Newark

15:10 - 23:21LHR London Heathrow-PWM Portland

13h 11m1 stop Newark

£770United Airlines

Sun, 15 Nov - Thu, 19 Nov

14:05 - 08:30PWM Portland-LHR London Heathrow

13h 25m2 stops Washington, D.C. Dulles Intl Toronto Pearson Intl

06:00 - 23:21LHR London Heathrow-PWM Portland

22h 21m3 stops Zurich Toronto Pearson Intl Newark

£851Multiple Airlines

Tue, 17 Nov - Tue, 24 Nov

10:50 - 07:10PWM Portland-LHR London Heathrow

15h 20m2 stops Newark Montreal Pierre Elliott Trudeau Intl

18:00 - 13:26LHR London Heathrow-PWM Portland

24h 26m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Newark

£873Multiple Airlines

Tue, 17 Nov - Tue, 24 Nov

08:49 - 06:30PWM Portland-LHR London Heathrow

16h 41m3 stops Newark Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

18:00 - 13:26LHR London Heathrow-PWM Portland

24h 26m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Newark

£992Air Canada

Booking Insights

Price, demand, and travel trends for Portland to London Heathrow Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Stopovers

How much is a return flight from Portland to London Heathrow Airport? This analysis is based on the cheapest return price found on KAYAK in the last 12 months by searching for a flight from Portland to London Heathrow Airport departing in March.
What's the cheapest day of the week to fly from Portland to London Heathrow Airport?: Based on deals KAYAK users found in the last 12 months, Sunday is the cheapest day of the week to fly from Portland to London Heathrow Airport. It's 12% cheaper than the average day, while Friday is the most expensive, with prices 70% higher.

Find deals

Low season	February
High season	May
Cheapest flight	£262

Beat the crowds with an average 72% drop in traveller numbers.

The most popular month to fly with an average 59% increase in traveller numbers.

One-way flight from Portland to London Heathrow Airport

When to book flights from Portland to Heathrow

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

Estimated return price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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.

Which cabin classes can I book on flights from Portland to London Heathrow Airport?
Only Economy class is available on flights from Portland to London Heathrow Airport.
How long is a flight from Portland to London Heathrow Airport?
A direct flight from Portland to London Heathrow Airport takes 00m, covering 3,173 miles.
Do I need a passport to fly from Portland to London Heathrow Airport?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How much should I expect to pay for a Portland to London Heathrow Airport flight?
Return flights from Portland to London Heathrow Airport range from £569 to £824, with an average of £677 over the past 12 months. Anything below £569 counts as a good deal.
Have flight prices from Portland to London Heathrow Airport changed much recently?
Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £580 to £4,368. That means the highest observed fare was about 8x higher than the lowest one.
How are flight prices from Portland to London Heathrow Airport looking right now?
One-way fares from Portland to London Heathrow Airport are currently lower than usual. Average one-way flight prices are about £284, which is 24% below the typical average for this route.
Which car hire options are available at London Heathrow Airport (LHR)?
London Heathrow Airport (LHR) hosts 5 major car hire companies, with daily rates averaging £29 for economy cars. Top options include:

• GREEN MOTION
• DRIVALIA
• Europcar
• Alamo
• Rentacar
Which airports can I use when flying from Portland to London Heathrow Airport?
Flights from Portland to London Heathrow Airport usually depart from Portland (PWM) and arrive at London Heathrow (LHR).
Which airports do connecting flights from Portland to London Heathrow Airport pass through?
One-stop flights from Portland to London Heathrow Airport most commonly connect through:

• Newark (EWR) – 41% of one-stop connections
• New York John F Kennedy Intl (JFK) – 27% of one-stop connections
• Philadelphia (PHL) – 27% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) – 2% of one-stop connections
Can I save money by using flexible dates for flights from Portland to London Heathrow Airport?
Yes. Flexible dates can save you up to 48% on flights from Portland to London Heathrow Airport. Sunday is the cheapest departure day at £601 return on average, while Friday is the most expensive at £1,155, a difference of £554.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
How much time can I save by choosing a different stopover airport from Portland to London Heathrow Airport?
Flying via Newark (EWR) gives the shortest average 1-stop total travel time of 10h 52m, compared to 11h 15m via Philadelphia (PHL) and 12h 26m via Chicago O'Hare Intl (ORD).
What is the time difference between Portland and London Heathrow Airport?
London Heathrow Airport is 5 hours ahead of Portland (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in London Heathrow Airport?
Some of the most popular sights in London Heathrow Airport are Hyde Park, Tower Bridge, and Royal Albert Hall. These are among the most viewed places in London Heathrow Airport on KAYAK.

If your dates are flexible, aim for a Sunday departure and avoid flying on Friday. On this route, Sunday flights average £601, about £554 less than Friday fares (48% savings) based on the last 12 months.
If you can choose when to travel, plan your Portland to London Heathrow Airport trip for August. Fares historically average £566 return in that month – typically £813 less than the most expensive month, which is December (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.

• Hilton London Heathrow Airport

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PWM - LHR

£262 Find Cheap Flights from Portland to London – Compare and Save

Everything you should know

Cheap Flights from Portland to Heathrow (PWM-LHR)

Recent return flight deals from Portland to Heathrow

Recent one-way flight deals from Portland to Heathrow

Recent last minute flight deals from Portland to Heathrow

Price, demand, and travel trends for Portland to London Heathrow Airport flights

How much is a return flight from Portland to London Heathrow Airport?

What's the cheapest day of the week to fly from Portland to London Heathrow Airport?

Which airline is the cheapest to fly from Portland to London Heathrow Airport?

What is the most popular stopover airport when flying from Portland to London Heathrow Airport?

What is the cheapest stopover airport when flying from Portland to London Heathrow Airport?

When flying from Portland to London Heathrow Airport, which airport offers the shortest stopover?

Key details for Portland to London Heathrow Airport flights

Low season

High season

Cheapest flight

When to book flights from Portland to Heathrow

Your Portland to London Heathrow Airport flight questions, answered

Your guide to booking Portland to London Heathrow Airport flights

More options for your flight from Portland to Heathrow

Complete your trip to London with a hotel stay or car hire

Information on your arrival and departure airports

Cabin class types available on flights to Heathrow

Find direct flights to and from Portland and Heathrow

Flights from domestic origins to Heathrow

Flights to other popular destinations

Find deals for your return flight