London

$404+ Cheap flights from Portland (PWM) to London (LON)

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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
Nov 9 — Nov 161
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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 November 4, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

July

Cheapest in

February

Round-trip from

$617
(JetBlue)

One-way from

$404
(Kiwi.com)
Provider with most accurate pricing for Portland-London (LON) flight deals.
Provider most trusted by Cheapflights users for Portland-London (LON) flights.
High demand for flights, 31% potential price rise
Best time to find cheap flights, 25% potential price drop
From Portland to London (LON)
One-way flight from Portland to London (LON)

Find flight deals from Portland to London

Cheapest flights from Portland to London
Explore the most affordable flight options available from Portland to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 4, 2024.

This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/294:05 pmPWM - LHR
1 stop12h 05mUnited Airlines
Fri 1/1010:00 amLHR - PWM
1 stop11h 52mUnited Airlines
Deal found 11/2$795
This United deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/295:20 amPWM - LHR
2 stops20h 00mMultiple Airlines
Fri 1/1011:10 amLHR - PWM
2 stops16h 20mMultiple Airlines
Deal found 11/2$805
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/32:59 pmPWM - LHR
1 stop11h 56mDelta
Fri 12/134:35 pmLHR - PWM
1 stop12h 24mDelta
Deal found 11/3$845
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/56:00 amPWM - LGW
3 stops23h 55mMultiple Airlines
Tue 12/1011:55 amLGW - PWM
3 stops29h 22mMultiple Airlines
Deal found 11/3$940
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/56:00 amPWM - LHR
2 stops20h 10mAir Canada
Tue 12/103:00 pmLHR - PWM
2 stops36h 50mAir Canada
Deal found 11/3$1,072
This KLM deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/512:51 pmPWM - LHR
1 stop12h 59mKLM
Tue 12/102:30 pmLHR - PWM
1 stop14h 40mKLM
Deal found 11/2$1,095
This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2412:23 pmPWM - LHR
2 stops16h 37mAmerican Airlines
Sun 12/291:10 pmLHR - PWM
2 stops15h 45mAmerican Airlines
Deal found 11/3$1,168
This Aeromexico deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/112:51 pmPWM - LHR
2 stops27h 34mAir France
Sat 12/77:35 pmLHR - PWM
2 stops32h 42mAir France
Deal found 11/3$1,192
This Scandinavian Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2912:15 pmPWM - LHR
3 stops25h 35mScandinavian Airlines
Fri 1/106:40 amLHR - PWM
2 stops21h 51mScandinavian Airlines
Deal found 11/2$1,375
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2112:51 pmPWM - LCY
2 stops15h 39mDelta
Mon 11/2510:00 amLCY - PWM
2 stops18h 09mDelta
Deal found 11/4$2,415

Find flights from Portland to London within your budget

Customize 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 2,455,398 searches. Data last updated November 4, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortlandLondon

PWM - LGW

PWMLGW

Portland

Sun 12/15

9:13 pm-10:00 am

1 stop31h 47m

$404

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 12/15

11:24 am-6:40 am

2 stops14h 16m

$518

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 12/5

6:00 am-8:35 pm

2 stops33h 35m

$541

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 12/5

12:56 pm-9:20 am

1 stop15h 24m

$547

PortlandLondon

PWM - LCY

PWMLCY

Portland

Sun 12/15

4:30 pm-4:35 pm

2 stops19h 05m

$562

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 12/5

6:00 am-9:35 pm

3 stops34h 35m

$460

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 12/19

12:57 pm-6:50 am

1 stop12h 53m

$977

PortlandLondon

PWM - LCY

PWMLCY

Portland

Thu 12/5

1:55 pm-12:50 pm

2 stops17h 55m

$587

PortlandLondon

PWM - LCY

PWMLCY

Portland

Sun 12/15

9:13 pm-8:35 am

3 stops30h 22m

$845

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sat 12/21

6:05 am-11:40 am

1 stop24h 35m

$997

Flights are sorted by cheapest first

Deals found on 11/3

Showing 1-10 of 27 results
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2
3

Compare providers for flights from Portland to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to London in November.
ProviderPrice AccuracyTrust Score*Cancellation Policy
ExpediaPrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy
FlightHubPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
eDreamsPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
AranGrantPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland, Maine-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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, November is the cheapest month in which you can book a flight from Portland, Maine to London (average of $649). Flying from Portland, Maine to London in June is currently the most expensive (average of $1,089). 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.

What is the cheapest time of day to fly from PWM to LON?

Find hourly flight availability from Portland to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 4, 2024.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 9% on flights from Portland, Maine to London by exploring options for tickets at noon.

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 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 November 4, 2024.
Read reviews from past customers who have flown Delta, KLM and Turkish Airlines from Portland to London. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

8.0
Very good
8,829 reviews
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

7.8
Good
1,350 reviews
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

7.6
Good
666 reviews
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

7.5
Good
3,493 reviews
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

7.4
Good
1,532 reviews
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 3 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 $700 on Cheapflights?

    Yes, there are multiple flights from Portland, Maine to London for under $700. The cheapest flight booked recently is on JetBlue for just $617, but on average you can expect to pay $1,080.

  • Are there last-minute flights available from Portland, Maine to London for under $4,000?

    There are currently 1+ open flights from Portland, Maine to London within the next 7 days for less than $4,000.

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

    Flying on JetBlue is currently your cheapest option to London, with prices starting at $617. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $795 and $845, respectively. JetBlue is 27% cheaper than the average price of flights available within the next 90 days to this destination.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $518. Air Canada flights start at $541 while deals on Delta start at $562 one-way.

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

  • What does PWM to LHR mean?

    This is defined as Portland Airport (PWM) and London Heathrow Airport (LHR). Codes like London Heathrow Airport are often used to just call airports uniquely. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN).

  • 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 vacation 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 11/4.

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

    Currently, November is the cheapest month in which you can book a flight from Portland, Maine to London (average of $649). Flying from Portland, Maine to London in June is currently the most expensive (average of $1,089). 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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Top 3 airlines flying from Portland to London

Discover the top 3 airlines that operate flights from Portland to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,455,398 searches. Data last updated November 4, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$602Average$1,167FlexibilityNo cancel feeOn-time71%
DeltaCheapest$650Average$920FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$666Average$951FlexibilityNo cancel feeOn-time69%
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