Find flights
When to book
Airlines
FAQs

Cheap flights from Portland to London from £417

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
PWM — LON
8 May — 15 May1
1 adult
Wed 8/5
Wed 15/5

Cheap flight deals from Portland to London

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 3 May 2024.

Popular in

June

Cheapest in

April

Average price

£610

Round-trip from

£69
High demand for flights, 30% potential price rise
Best time to find cheap flights, 28% potential price drop
Average for round-trip flights in May 2024
From Portland to London (LON)

What is the cheapest month to fly from Portland, Maine to London?

Flights from Portland, Maine to London lean towards being more expensive in June. Prices are generally better when you fly from Portland, Maine to London in April, with the cheapest ticket starting at £482.

When is the cheapest time to fly from Portland, Maine to London (PWM - LON)?

When flying from Portland, Maine to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap United Airlines flights from Portland to London

Explore cheap flight options specifically provided by United Airlines for the route between Portland and London. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 903,063 searches. Data last updated 3 May 2024.
Consider these cheap United Airlines flights we've found departing from Portland to London. Come back soon if you're not finding the exact deal you're looking for.
Thu 22/815:55PWM - LHR
2 stops13h 45mUnited Airlines
Mon 26/806:50LHR - PWM
2 stops22h 09mUnited Airlines
Deal found 2/5£723
Wed 12/605:30PWM - LHR
2 stops20h 00mUnited Airlines
Wed 3/709:30LHR - PWM
2 stops19h 23mUnited Airlines
Deal found 2/5£933

Cheap KLM flights from Portland to London

Explore cheap flight options specifically provided by KLM for the route between Portland and London. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 903,063 searches. Data last updated 3 May 2024.
Take a gander at the lowest prices we've found on KLM flights from Portland to London. Deals are refreshing constantly so come back soon for more options.
Wed 25/917:30PWM - LGW
1 stop11h 30mKLM
Tue 8/1012:00LGW - PWM
1 stop16h 38mKLM
Deal found 2/5£601
Fri 23/805:30PWM - LGW
1 stop23h 30mKLM
Tue 27/812:00LGW - PWM
1 stop16h 50mKLM
Deal found 1/5£660
Thu 22/814:35PWM - LHR
1 stop12h 30mKLM
Mon 26/812:10LHR - PWM
1 stop15h 56mKLM
Deal found 2/5£711
Fri 17/514:51PWM - LGW
1 stop14h 09mKLM
Tue 21/512:00LGW - PWM
1 stop16h 57mKLM
Deal found 2/5£874
Thu 11/714:08PWM - LHR
1 stop12h 57mKLM
Tue 16/710:50LHR - PWM
1 stop18h 24mKLM
Deal found 2/5£949

Cheap Portland to London flights in May & June 2024

Find cheap flight options from Portland to London specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 903,063 searches. Prices were last updated on 3 May 2024.
These are some of the best deals we've found on flights to London in 2024 at this time. For more flight deals, be sure to check back very soon.
Fri 17/512:59PWM - LHR
1 stop12h 41mMultiple Airlines
Tue 21/513:40LHR - PWM
1 stop14h 01mMultiple Airlines
Deal found 2/5£597
Fri 17/505:31PWM - LHR
1 stop9h 39mDelta
Tue 21/509:00LHR - PWM
2 stops19h 57mDelta
Deal found 2/5£678
Fri 17/512:35PWM - LHR
2 stops14h 25mAmerican Airlines
Tue 21/510:30LHR - PWM
2 stops18h 17mAmerican Airlines
Deal found 2/5£680
Sat 1/614:24PWM - LHR
1 stop14h 06mJetBlue
Sat 8/607:25LHR - PWM
1 stop11h 04mJetBlue
Deal found 2/5£766
Sat 1/605:00PWM - LHR
1 stop20h 45mDelta
Sat 8/609:00LHR - PWM
2 stops20h 24mDelta
Deal found 2/5£798
Sat 1/612:35PWM - LHR
2 stops14h 10mAmerican Airlines
Sat 8/612:15LHR - PWM
2 stops14h 47mAmerican Airlines
Deal found 2/5£802
Wed 12/613:09PWM - LHR
1 stop16h 21mAmerican Airlines
Wed 3/709:45LHR - PWM
1 stop17h 54mAmerican Airlines
Deal found 2/5£834
Wed 12/606:00PWM - LHR
1 stop20h 45mAmerican Airlines
Wed 3/712:15LHR - PWM
2 stops16h 38mAmerican Airlines
Deal found 2/5£837
Thu 23/514:24PWM - LHR
1 stop14h 06mJetBlue
Mon 27/507:25LHR - PWM
1 stop11h 04mJetBlue
Deal found 1/5£861

Portland to London 2024 flight deals

Discover exclusive flight deals for travel between Portland and London in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 903,063 searches. Data last updated 3 May 2024.
These are some of the best deals we've found on flights to London in 2024 at this time. For more flight deals, be sure to check back very soon.
Tue 8/1013:10PWM - LGW
1 stop13h 45mJetBlue
Tue 22/1010:30LGW - PWM
1 stop15h 58mJetBlue
Deal found 2/5£500
Tue 24/913:10PWM - LHR
1 stop15h 20mJetBlue
Tue 1/1008:25LHR - PWM
1 stop18h 03mJetBlue
Deal found 2/5£502
Tue 8/1013:10PWM - LHR
1 stop15h 20mJetBlue
Tue 22/1008:25LHR - PWM
1 stop18h 03mJetBlue
Deal found 2/5£529
Wed 25/913:10PWM - LHR
1 stop15h 20mJetBlue
Tue 8/1008:25LHR - PWM
1 stop18h 03mJetBlue
Deal found 2/5£541
Thu 5/913:10PWM - LGW
1 stop13h 45mJetBlue
Tue 17/910:30LGW - PWM
1 stop15h 58mJetBlue
Deal found 2/5£588
Tue 10/917:55PWM - LHR
1 stop12h 20mAmerican Airlines
Tue 17/909:50LHR - PWM
2 stops16h 07mAmerican Airlines
Deal found 2/5£592
Tue 10/913:18PWM - LHR
2 stops13h 47mAmerican Airlines
Tue 17/909:50LHR - PWM
2 stops16h 07mAmerican Airlines
Deal found 2/5£596
Fri 17/512:59PWM - LHR
1 stop12h 41mMultiple Airlines
Tue 21/513:40LHR - PWM
1 stop14h 01mMultiple Airlines
Deal found 2/5£597
Wed 25/917:30PWM - LGW
1 stop11h 30mKLM
Tue 8/1012:00LGW - PWM
1 stop16h 38mKLM
Deal found 2/5£601

One-way flights to London from Portland

Search for one-way flight options from Portland to London. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 903,063 searches. Data last updated 3 May 2024.
If you're seeking multiple options on one-way flights from Portland to London, be sure to check out these deals, which are updated often. Those needing a return flight from Portland to London can use the search form above.
Mon 3/610:50PWM - LGW
1 stop18h 10mMultiple Airlines
Deal found 1/5£417
Thu 16/514:19PWM - LGW
1 stop12h 36mJetBlue
Deal found 1/5£429
Thu 16/514:19PWM - LHR
1 stop14h 11mJetBlue
Deal found 1/5£429
Sun 14/713:27PWM - LGW
2 stops39h 23mMultiple Airlines
Deal found 2/5£457
Sun 14/713:27PWM - LGW
3 stops36h 53mMultiple Airlines
Deal found 2/5£463
Sun 14/714:08PWM - LGW
1 stop14h 52mDelta
Deal found 2/5£466
Sun 14/712:50PWM - LHR
2 stops14h 15mDelta
Deal found 2/5£466
Mon 3/614:24PWM - LHR
1 stop14h 06mJetBlue
Deal found 1/5£517
Thu 16/514:51PWM - LHR
2 stops14h 39mDelta
Deal found 1/5£520

Find flights from Portland to London within your budget

Customise your flight search to find flights from Portland to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 903,063 searches. Data last updated 3 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£500 - £838

Route

Depart

Return

Price

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Tue 8/10

1 stop13h 45m

London Gatwick

Tue 22/10

1 stop15h 58m

£500

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Tue 24/9

1 stop15h 20m

London Heathrow

Tue 1/10

1 stop18h 03m

£502

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Tue 10/9

1 stop12h 20m

London Heathrow

Tue 17/9

2 stops16h 07m

£592

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Fri 17/5

1 stop12h 41m

London Heathrow

Tue 21/5

1 stop14h 01m

£597

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Wed 25/9

1 stop11h 30m

London Gatwick

Tue 8/10

1 stop16h 38m

£601

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Tue 8/10

1 stop11h 30m

London Gatwick

Tue 22/10

2 stops16h 06m

£604

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Tue 10/9

2 stops22h 10m

London Gatwick

Tue 17/9

2 stops24h 00m

£706

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Thu 22/8

2 stops13h 45m

London Heathrow

Mon 26/8

2 stops22h 09m

£723

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Thu 5/9

3 stops16h 32m

London Heathrow

Tue 17/9

3 stops22h 31m

£838

Flights are sorted by cheapest first

Deals found on 2/5

No data available for this route at this time. Please check back soon.

Average price of flights to London by month

Plan your trip from Portland to London by taking into account the cheapest months to travel. The average price of a one-way flight from Portland to London is currently £463 while a return flight costs £629. Price data was last updated on 28 April 2024.

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to London (average of £111). Flying from Portland, Maine to London in June is currently the most expensive (average of £171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

£89

February

£99

March

£95

April

£101

May

£108

June

£137

July

£136

August

£116

September

£112

October

£127

November

£92

December

£97

Temperature and rainfall in London by month

Plan your trip to London by taking into account the average temperature and rainfall totals by month.

LON

Temperature

4 - 17 °C

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 3 May 2024.
Get a feel of what it's like to fly with United Airlines, KLM and Delta from Portland to London by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very Good
10,848 reviews

Comfort

7.9

Food

7.4

Overall

8.1

Boarding

8.2

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

8.1
Very Good
10,848 reviews
8.1
Very Good
10,848 reviews

Comfort

7.9

Food

7.4

Overall

8.1

Boarding

8.2

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.9
Good
1,604 reviews
8.1
Very Good
10,848 reviews

Comfort

7.9

Food

7.4

Overall

8.1

Boarding

8.2

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.7
Good
744 reviews
8.1
Very Good
10,848 reviews

Comfort

7.9

Food

7.4

Overall

8.1

Boarding

8.2

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.6
Good
4,552 reviews
8.1
Very Good
10,848 reviews

Comfort

7.9

Food

7.4

Overall

8.1

Boarding

8.2

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.6
Good
2,965 reviews
8.1
Very Good
10,848 reviews

Comfort

7.9

Food

7.4

Overall

8.1

Boarding

8.2

Entertainment

8.0

Crew

8.6

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Portland to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Portland to London?

    Portland (PWM) is the airport you will fly out of if you book a flight from Portland to London. You should not have trouble finding flights to London from Portland; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Portland airport to London. It is only a 2.9 mi journey to Portland (PWM) from Portland’s city center.

  • Can I find flights from Portland, Maine to London for under £500 on Cheapflights?

    Yes, there are multiple flights from Portland, Maine to London for under £500. The cheapest flight booked recently is on JetBlue for just £500, but on average you can expect to pay £594.

  • What are the cheapest airlines flying from Portland, Maine to London round-trip?

    Cheapflights users have booked flights from Portland, Maine to London round-trip from £500. Other airlines that can offer you cheap pricing are American Airlines, from £592, and KLM, from £601. JetBlue is currently priced 34% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Portland, Maine to London one-way?

    £429 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from £466 and £546, respectively.

  • What are the most popular routes from Portland, Maine to London?

  • What does PWM to LHR mean?

    Portland Airport is PWM and London Heathrow Airport is LHR. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Portland to London that include extra baggage allowance?

    The amount of baggage you can bring on your Portland to London flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Portland to London with specific airlines?

    Yes, Cheapflights allows you to browse and filter Portland to London flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Portland to London that include hotel bookings?

    Yes. In addition to deals on Portland to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portland to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to London.

  • Can I find deals for business class flights from Portland to London?

    Yes. Cheapflights offers flight deals from Portland to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Portland to London that allow pets onboard?

    Many airlines flying from Portland to London offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Portland to London?

    Yes, you can often find last-minute deals on Portland to London flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Portland, Maine to London flight deals updated?

    The Portland, Maine to London flight deals you see on this page were last updated on 2/5.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to London
See prices for flight routes from nearby airports that may be better suited for you.

Search flights from Portland to London by cabin class

Find flights from Portland to London, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portland to London?

Cheapflights helps you search for flights from Portland to London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Portland to London?

Cheapflights helps you find that perfect flight to London from Portland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Portland to London with no change fees?

Certainly. Search results for flights to London from Portland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Portland to London become cheaper?

Yes, Cheapflights offers price alerts on Portland to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.