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Cheap flights from Portland to London from £328

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 17/11. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
12 Sep — 19 Sep1
1 adult

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 7 September 2024.

Round-trip from

£467

One-way from

£328

Popular in

June

Cheapest in

February
JetBlue
  • JetBlue
  • 8/10-22/10
  • 2 total stops
  • 31h 17m total
  • Portland to London
KLM
  • KLM
  • 17/11
  • 1 total stop
  • 12h 20m total
  • Portland to London
High demand for flights, 38% potential price rise
Best time to find cheap flights, 23% potential price drop

Cheap Austrian Airlines flights from Portland to London

Explore cheap flight options specifically provided by Austrian 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 991,672 searches. Data last updated 7 September 2024.
Consider these cheap Austrian 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 24/1011:22PWM - LHR
1 stop13h 58mAustrian Airlines
Thu 31/1010:00LHR - PWM
1 stop12h 46mAustrian Airlines
Deal found 6/9£713
Sun 24/1111:24PWM - LHR
1 stop14h 31mAustrian Airlines
Sun 1/1216:00LHR - PWM
1 stop11h 50mAustrian Airlines
Deal found 7/9£1,180

Cheap American Airlines flights from Portland to London

Explore cheap flight options specifically provided by American 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 991,672 searches. Data last updated 7 September 2024.
Take a gander at the lowest prices we've found on American Airlines flights from Portland to London. Deals are refreshing constantly so come back soon for more options.
Sun 24/1113:06PWM - LHR
1 stop12h 29mAmerican Airlines
Sun 1/1211:45LHR - PWM
2 stops16h 03mAmerican Airlines
Deal found 7/9£607
Fri 20/1213:12PWM - LHR
1 stop15h 08mAmerican Airlines
Fri 27/1213:10LHR - PWM
1 stop14h 08mAmerican Airlines
Deal found 6/9£834
Fri 20/1213:12PWM - LHR
1 stop15h 08mAmerican Airlines
Fri 27/1211:25LHR - PWM
2 stops15h 53mAmerican Airlines
Deal found 6/9£867

Cheap Portland to London flights in September & October 2024

Find cheap flight options from Portland to London specifically for the months of September and October 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 991,672 searches. Prices were last updated on 7 September 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 8/1013:06PWM - LGW
1 stop13h 49mJetBlue
Tue 22/1010:30LGW - PWM
1 stop17h 28mJetBlue
Deal found 6/9£467
Tue 8/1013:06PWM - LHR
1 stop15h 24mJetBlue
Tue 22/1011:55LHR - PWM
1 stop16h 03mJetBlue
Deal found 7/9£486
Tue 8/1019:27PWM - LHR
1 stop10h 13mUnited Airlines
Tue 22/1014:05LHR - PWM
2 stops25h 27mUnited Airlines
Deal found 6/9£505
Sat 5/1013:06PWM - LHR
1 stop15h 24mJetBlue
Sat 12/1011:55LHR - PWM
1 stop16h 03mJetBlue
Deal found 5/9£508
Tue 8/1016:52PWM - LHR
2 stops12h 48mUnited Airlines
Tue 22/1014:05LHR - PWM
2 stops25h 27mUnited Airlines
Deal found 6/9£508
Tue 8/1015:13PWM - LHR
2 stops14h 27mUnited Airlines
Tue 22/1014:05LHR - PWM
2 stops25h 27mUnited Airlines
Deal found 7/9£509
Wed 25/914:52PWM - LHR
1 stop10h 28mDelta
Tue 8/1011:45LHR - PWM
2 stops17h 45mDelta
Deal found 7/9£513
Wed 25/917:05PWM - LHR
2 stops15h 10mDelta
Tue 8/1011:45LHR - PWM
2 stops17h 45mDelta
Deal found 7/9£517
Tue 8/1014:50PWM - LHR
1 stop12h 15mKLM
Tue 22/1017:50LHR - PWM
1 stop11h 40mKLM
Deal found 6/9£522

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 991,672 searches. Data last updated 7 September 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 8/1013:06PWM - LGW
1 stop13h 49mJetBlue
Tue 22/1010:30LGW - PWM
1 stop17h 28mJetBlue
Deal found 6/9£467
Tue 8/1013:06PWM - LHR
1 stop15h 24mJetBlue
Tue 22/1011:55LHR - PWM
1 stop16h 03mJetBlue
Deal found 7/9£486
Tue 8/1019:27PWM - LHR
1 stop10h 13mUnited Airlines
Tue 22/1014:05LHR - PWM
2 stops25h 27mUnited Airlines
Deal found 6/9£505
Sat 5/1013:06PWM - LHR
1 stop15h 24mJetBlue
Sat 12/1011:55LHR - PWM
1 stop16h 03mJetBlue
Deal found 5/9£508
Tue 8/1016:52PWM - LHR
2 stops12h 48mUnited Airlines
Tue 22/1014:05LHR - PWM
2 stops25h 27mUnited Airlines
Deal found 6/9£508
Tue 8/1015:13PWM - LHR
2 stops14h 27mUnited Airlines
Tue 22/1014:05LHR - PWM
2 stops25h 27mUnited Airlines
Deal found 7/9£509
Wed 25/914:52PWM - LHR
1 stop10h 28mDelta
Tue 8/1011:45LHR - PWM
2 stops17h 45mDelta
Deal found 7/9£513
Wed 25/917:05PWM - LHR
2 stops15h 10mDelta
Tue 8/1011:45LHR - PWM
2 stops17h 45mDelta
Deal found 7/9£517
Tue 8/1014:50PWM - LHR
1 stop12h 15mKLM
Tue 22/1017:50LHR - PWM
1 stop11h 40mKLM
Deal found 6/9£522

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 991,672 searches. Data last updated 7 September 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.
Sun 17/1114:35PWM - LHR
1 stop12h 20mKLM
Deal found 6/9£328
Sat 14/913:06PWM - LHR
1 stop15h 24mJetBlue
Deal found 6/9£352
Sun 17/1114:35PWM - LCY
2 stops13h 55mDelta
Deal found 6/9£362
Sun 17/1112:24PWM - LGW
2 stops14h 41mAmerican Airlines
Deal found 6/9£397
Sat 14/908:40PWM - LHR
2 stops40h 50mAir Canada
Deal found 6/9£419
Sat 14/913:06PWM - LGW
2 stops26h 54mTurkish Airlines
Deal found 6/9£574
Sat 14/908:40PWM - LHR
3 stops16h 50mAir Canada
Deal found 6/9£729
Sun 17/1111:24PWM - LHR
3 stops19h 26mAir Canada
Deal found 6/9£1,529

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 991,672 searches. Data last updated 7 September 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£467 - £713

Route

Depart

Return

Price

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Tue 8/10

1 stop13h 49m

London Gatwick

Tue 22/10

1 stop17h 28m

£467

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Tue 8/10

1 stop10h 13m

London Heathrow

Tue 22/10

2 stops25h 27m

£505

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Wed 25/9

1 stop10h 28m

London Heathrow

Tue 8/10

2 stops17h 45m

£513

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Tue 8/10

1 stop12h 15m

London Heathrow

Tue 22/10

1 stop11h 40m

£522

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Sun 3/11

2 stops33h 35m

London Heathrow

Sun 10/11

2 stops37h 20m

£534

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Thu 24/10

2 stops25h 13m

London Gatwick

Thu 31/10

2 stops43h 56m

£560

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Sun 24/11

1 stop12h 29m

London Heathrow

Sun 1/12

2 stops16h 03m

£607

PortlandLondon Gatwick

PWM - LGW

PWMLGW

Portland

Tue 8/10

2 stops20h 40m

London Gatwick

Tue 22/10

2 stops23h 56m

£630

PortlandLondon Heathrow

PWM - LHR

PWMLHR

Portland

Thu 24/10

1 stop13h 58m

London Heathrow

Thu 31/10

1 stop12h 46m

£713

Flights are sorted by cheapest first

Deals found on 6/9

Best time to book a flight from Portland to London

Have a flexible travel schedule? Discover the best time to fly to London from Portland with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Portland to London

Get recent, data-driven insights about flights from Portland to London including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Portland, Maine to London?

Currently, September is the cheapest month in which you can book a flight from Portland, Maine to London (average of £192). Flying from Portland, Maine to London in June is currently the most expensive (average of £428). 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.

Rainfall in London by month

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

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

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

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 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 7 September 2024.
Get a feel of what it's like to fly with Austrian Airlines, American Airlines and Air Canada 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.
8.0
Very Good
9,165 reviews

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Food

7.4

Overall

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

8.0
Very Good
9,165 reviews
8.0
Very Good
9,165 reviews

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Food

7.4

Overall

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.8
Good
1,366 reviews
8.0
Very Good
9,165 reviews

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Food

7.4

Overall

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.7
Good
880 reviews
8.0
Very Good
9,165 reviews

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Food

7.4

Overall

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.6
Good
3,734 reviews
8.0
Very Good
9,165 reviews

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Food

7.4

Overall

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

7.4
Good
3,795 reviews
8.0
Very Good
9,165 reviews

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Food

7.4

Overall

8.0

Crew

8.6

Reviews

1 / 10

One of the worst flights ever. I got to the airport early for my 6:48 pm flight and tried to get on the 4:30 ish flight. The gate agent was one of the worst customer service people in my 20 yrs of flying Delta. Very rude and wouldn’t even talk to me about riding standby. Then flight took off 3 hrs late and when Landed in Atlanta, the gate people wouldn’t even try to get me on the plane. It was still there but door was closed. For all of my almost 2 million miles, the worst experience from Delta. I am highly disappointed as it was not my fault I have to sleep in Atlanta and not Jacksonville Florida

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 £467, but on average you can expect to pay £539.

  • 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 £467. Other airlines that can offer you cheap pricing are United Airlines, from £505, and Delta, from £513. JetBlue is currently priced 32% below the average price you’ll pay for this route.

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

    £328 is the cheapest one-way deal found within the past few days, from KLM. You may also be able to find cheap deals on JetBlue and Delta, with prices starting from £352 and £362, 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 7/9.

  • What is the cheapest month to book a flight from Portland, Maine to London?

    Currently, September is the cheapest month in which you can book a flight from Portland, Maine to London (average of £192). Flying from Portland, Maine to London in June is currently the most expensive (average of £428). 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.

See more FAQs

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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.

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