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 $589. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and United Airlines, with the lowest prices starting at $683 and $730, respectively. JetBlue is 33% 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 JetBlue, which is currently one of the cheapest options available, starting at $393. Air Canada flights start at $521 while deals on TAP AIR PORTUGAL start at $564 one-way.

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

Travelers seeking maximum savings on their Portland, Maine to London flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Most travelers choose Portland - London Heathrow, Portland - London Gatwick or Portland - London City when deciding on the best route from Portland, Maine to London.

What are the most popular airlines that fly from Portland, Maine to London?

American Airlines, JetBlue and Delta are the most popular airlines when flying from Portland, Maine to London.

What is the cheapest day to fly round-trip from Portland, Maine to London?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 18% on the overall cost on flights from Portland, Maine to London.

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

November is one of the best times of the year to fly to London from Portland, Maine. Prices for November average $888 per person but you can even find prices for as low as $696. The most expensive prices can be found in the month of June. Opting for a November flight can save you 39% on your journey compared to booking in June

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.

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 4 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 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.

$393+ Save on Flights from Portland, ME to London

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheap flight deals from Portland to London

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$589 (JetBlue)
One-way from	$393 (JetBlue)
Popular in	June
Cheapest in	November
Average price	$747

Provider with most accurate pricing for Portland-London (LON) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Portland-London (LON) flights.

Search Deals

From Portland to London (LON)

Search Deals

One-way flight from Portland to London (LON)

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($202 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

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 marzo 4, 2025.

dom. 4/275:35 pmPWM - LHR

1 stop10h 55mJetBlue

vie. 5/28:15 amLHR - PWM

1 stop11h 10mJetBlue

Deal found 3/3

$589

mar. 4/13:00 pmPWM - LHR

2 stops20h 00mScandinavian Airlines

dom. 4/67:50 pmLHR - PWM

2 stops33h 33mScandinavian Airlines

Deal found 3/3

$683

vie. 9/57:15 pmPWM - LHR

2 stops44h 45mAir Canada

mié. 9/176:00 pmLHR - PWM

2 stops34h 17mAir Canada

Deal found 3/3

$720

vie. 5/26:00 amPWM - LHR

2 stops19h 30mMultiple Airlines

vie. 5/96:00 amLHR - PWM

2 stops22h 27mMultiple Airlines

Deal found 3/3

$729

vie. 5/23:43 pmPWM - LHR

1 stop10h 32mUnited Airlines

vie. 5/99:30 amLHR - PWM

2 stops33h 25mUnited Airlines

Deal found 3/3

$730

jue. 4/242:59 pmPWM - LHR

1 stop13h 16mDelta

vie. 5/211:45 amLHR - PWM

2 stops17h 57mDelta

Deal found 3/3

$739

vie. 3/281:02 pmPWM - LHR

1 stop13h 48mKLM

lun. 3/311:05 pmLHR - PWM

1 stop15h 53mKLM

Deal found 3/3

$801

dom. 4/278:01 pmPWM - LGW

1 stop32h 59mMultiple Airlines

jue. 5/12:00 pmLGW - PWM

2 stops32h 36mMultiple Airlines

Deal found 3/3

$826

jue. 4/246:15 amPWM - LHR

2 stops34h 25mAustrian Airlines

lun. 5/59:05 amLHR - PWM

2 stops43h 22mAustrian Airlines

Deal found 3/3

$826

vie. 4/252:59 pmPWM - LCY

2 stops13h 31mDelta

sáb. 5/312:10 pmLCY - PWM

2 stops17h 32mDelta

Deal found 3/3

$879

mar. 4/15:35 pmPWM - LGW

2 stops23h 45mTurkish Airlines

dom. 4/65:15 pmLGW - PWM

2 stops28h 25mTurkish Airlines

Deal found 3/3

$924

jue. 7/242:35 pmPWM - LGW

1 stop14h 25mDelta

jue. 7/3112:00 pmLGW - PWM

1 stop16h 45mDelta

Deal found 3/3

$1,115

Best flights from Portland to London
Discover carefully curated flight deals from Portland to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated marzo 4, 2025.

dom. 4/275:35 pmPWM - LHR

1 stop10h 55mJetBlue

jue. 5/18:15 amLHR - PWM

1 stop11h 10mJetBlue

Deal found 3/3

$589

mar. 4/13:00 pmPWM - LHR

2 stops20h 00mScandinavian Airlines

dom. 4/67:50 pmLHR - PWM

2 stops33h 33mScandinavian Airlines

Deal found 3/3

$683

vie. 5/26:00 amPWM - LHR

2 stops19h 30mMultiple Airlines

vie. 5/96:00 amLHR - PWM

2 stops22h 27mMultiple Airlines

Deal found 3/3

$729

vie. 5/23:43 pmPWM - LHR

1 stop10h 32mUnited Airlines

vie. 5/99:30 amLHR - PWM

2 stops33h 25mUnited Airlines

Deal found 3/3

$730

jue. 4/242:59 pmPWM - LHR

1 stop13h 16mDelta

vie. 5/211:45 amLHR - PWM

2 stops17h 57mDelta

Deal found 3/3

$739

mié. 4/236:15 amPWM - LHR

2 stops22h 45mAir Canada

vie. 5/29:30 amLHR - PWM

2 stops18h 57mAir Canada

Deal found 3/3

$741

vie. 3/281:02 pmPWM - LHR

1 stop13h 48mKLM

lun. 3/311:05 pmLHR - PWM

1 stop15h 53mKLM

Deal found 3/3

$801

jue. 4/246:15 amPWM - LHR

2 stops34h 25mAustrian Airlines

lun. 5/59:05 amLHR - PWM

2 stops43h 22mAustrian Airlines

Deal found 3/3

$826

mar. 4/15:35 pmPWM - LGW

2 stops23h 45mTurkish Airlines

dom. 4/65:15 pmLGW - PWM

2 stops28h 25mTurkish Airlines

Deal found 3/3

$924

dom. 4/278:01 pmPWM - LGW

1 stop32h 59mMultiple Airlines

jue. 5/12:00 pmLGW - PWM

2 stops32h 36mMultiple Airlines

Deal found 3/3

$826

vie. 4/252:59 pmPWM - LCY

2 stops13h 31mDelta

sáb. 5/312:10 pmLCY - PWM

2 stops17h 32mDelta

Deal found 3/3

$879

jue. 7/242:35 pmPWM - LGW

1 stop14h 25mDelta

jue. 7/3112:00 pmLGW - PWM

1 stop16h 45mDelta

Deal found 3/3

$1,115

Last-minute flights from Portland to London
Discover last-minute flight deals from Portland to London. Data last updated marzo 4, 2025 and is based on user searches.

mar. 3/113:00 pmPWM - LHR

2 stops14h 20mScandinavian Airlines

mar. 5/66:40 amLHR - PWM

2 stops23h 02mScandinavian Airlines

Deal found 3/4

$927

mar. 3/114:03 pmPWM - LHR

1 stop15h 12mUnited Airlines

mar. 5/61:45 pmLHR - PWM

2 stops14h 42mUnited Airlines

Deal found 3/4

$934

mar. 3/113:55 pmPWM - LHR

2 stops15h 55mMultiple Airlines

mar. 5/68:45 amLHR - PWM

3 stops19h 42mMultiple Airlines

Deal found 3/4

$947

mar. 3/113:00 pmPWM - LHR

1 stop16h 10mKLM

mar. 5/64:05 pmLHR - PWM

1 stop13h 37mKLM

Deal found 3/4

$952

mar. 3/116:07 pmPWM - LGW

2 stops35h 38mMultiple Airlines

mar. 5/68:50 amLGW - PWM

3 stops32h 07mMultiple Airlines

Deal found 3/4

$1,129

mar. 3/1111:20 amPWM - LHR

3 stops19h 00mAir Canada

mar. 5/68:45 amLHR - PWM

3 stops19h 42mAir Canada

Deal found 3/4

$1,150

mié. 3/1211:20 amPWM - LHR

1 stop18h 55mAustrian Airlines

lun. 3/177:25 pmLHR - PWM

2 stops27h 14mAustrian Airlines

Deal found 3/2

$1,896

mié. 3/123:00 pmPWM - LCY

2 stops14h 30mDelta

lun. 3/178:40 amLCY - PWM

2 stops19h 35mDelta

Deal found 3/3

$2,278

vie. 3/281:02 pmPWM - LHR

1 stop13h 48mKLM

lun. 3/311:05 pmLHR - PWM

1 stop15h 53mKLM

Deal found 3/3

$801

mar. 4/13:00 pmPWM - LHR

2 stops20h 00mScandinavian Airlines

dom. 4/67:50 pmLHR - PWM

2 stops33h 33mScandinavian Airlines

Deal found 3/3

$683

mar. 4/16:45 pmPWM - LHR

1 stop10h 55mUnited Airlines

dom. 4/63:50 pmLHR - PWM

2 stops27h 52mUnited Airlines

Deal found 3/3

$737

mar. 4/16:15 amPWM - LHR

3 stops19h 15mMultiple Airlines

dom. 4/69:30 amLHR - PWM

2 stops17h 05mMultiple Airlines

Deal found 3/3

$834

One-way flights from Portland to London
Search for one-way flight options from Portland to London. Find affordable one-way fares based on user searches. Data last updated marzo 4, 2025.

mar. 5/63:20 pmPWM - LHR

1 stop13h 10mJetBlue

Deal found 3/2

$393

mar. 5/61:41 pmPWM - LHR

2 stops17h 14mMultiple Airlines

Deal found 3/2

$435

mié. 5/76:00 amPWM - LHR

3 stops19h 30mAir Canada

Deal found 3/2

$521

mié. 5/73:20 pmPWM - LGW

2 stops17h 40mTAP AIR PORTUGAL

Deal found 3/2

$564

mié. 6/186:55 pmPWM - LHR

1 stop13h 35mVirgin Atlantic

Deal found 3/3

$817

mié. 6/182:35 pmPWM - LGW

1 stop14h 25mDelta

Deal found 3/3

$833

mié. 6/182:05 pmPWM - LCY

2 stops17h 25mUnited Airlines

Deal found 3/4

$871

Find flights from Portland to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

PortlandLondon

PWM - LHR

PWMLHR

Portland

dom. 4/27

5:35 pm-9:30 am

1 stop10h 55m

London Heathrow

vie. 5/2

8:15 am-2:25 pm

1 stop11h 10m

$589

PortlandLondon

PWM - LHR

PWMLHR

Portland

mar. 4/1

3:00 pm-4:00 pm

2 stops20h 00m

London Heathrow

dom. 4/6

7:50 pm-12:23 am

2 stops33h 33m

$683

PortlandLondon

PWM - LHR

PWMLHR

Portland

vie. 5/2

6:00 am-6:30 am

2 stops19h 30m

London Heathrow

vie. 5/9

6:00 am-11:27 pm

2 stops22h 27m

$729

PortlandLondon

PWM - LHR

PWMLHR

Portland

vie. 5/2

3:43 pm-7:15 am

1 stop10h 32m

London Heathrow

vie. 5/9

9:30 am-1:55 pm

2 stops33h 25m

$730

PortlandLondon

PWM - LHR

PWMLHR

Portland

jue. 4/24

2:59 pm-9:15 am

1 stop13h 16m

London Heathrow

vie. 5/2

11:45 am-12:42 am

2 stops17h 57m

$739

PortlandLondon

PWM - LHR

PWMLHR

Portland

mié. 4/23

6:15 am-10:00 am

2 stops22h 45m

London Heathrow

vie. 5/2

9:30 am-11:27 pm

2 stops18h 57m

$741

PortlandLondon

PWM - LHR

PWMLHR

Portland

vie. 3/28

1:02 pm-6:50 am

1 stop13h 48m

London Heathrow

lun. 3/31

1:05 pm-11:58 pm

1 stop15h 53m

$801

PortlandLondon

PWM - LHR

PWMLHR

Portland

jue. 4/24

6:15 am-9:40 pm

2 stops34h 25m

London Heathrow

lun. 5/5

9:05 am-11:27 pm

2 stops43h 22m

$826

PortlandLondon

PWM - LGW

PWMLGW

Portland

dom. 4/27

8:01 pm-10:00 am

1 stop32h 59m

London Gatwick

jue. 5/1

2:00 pm-5:36 pm

2 stops32h 36m

$826

PortlandLondon

PWM - LCY

PWMLCY

Portland

vie. 4/25

2:59 pm-9:30 am

2 stops13h 31m

London City

sáb. 5/3

12:10 pm-12:42 am

2 stops17h 32m

$879

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 19 results

Compare providers for flights from Portland to London

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to London in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star

*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 $661). Flying from Portland, Maine to London in June is currently the most expensive (average of $1,128). 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?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 5% on flights from Portland, Maine to London by exploring options for tickets at noon.

Rainfall in London 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

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

Read reviews from past customers who have flown Delta, KLM and Austrian 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.

Delta

8.0

Very good

8,061 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

Delta

8.0

Very good

8,061 reviews

Delta

8.0

Very good

8,061 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

KLM

7.8

Good

1,321 reviews

Delta

8.0

Very good

8,061 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

Austrian Airlines

7.5

Good

767 reviews

Delta

8.0

Very good

8,061 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

United Airlines

7.4

Good

8,678 reviews

Delta

8.0

Very good

8,061 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

Virgin Atlantic

7.4

Good

644 reviews

Delta

8.0

Very good

8,061 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

Related info for your journey

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 4 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.
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 $589. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and United Airlines, with the lowest prices starting at $683 and $730, respectively. JetBlue is 33% 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 JetBlue, which is currently one of the cheapest options available, starting at $393. Air Canada flights start at $521 while deals on TAP AIR PORTUGAL start at $564 one-way.
What are the most popular routes from Portland, Maine to London?
Most travelers choose Portland - London Heathrow, Portland - London Gatwick or Portland - London City when deciding on the best route from Portland, Maine to London.
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.
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 $661). Flying from Portland, Maine to London in June is currently the most expensive (average of $1,128). 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.

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Top 4 airlines flying from Portland to London

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest$586	Average$704	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$652	Average$954	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$708	Average$1,162	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$725	Average$967	FlexibilityNo cancel fee	On-time69%

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$393+ Cheap flights from Portland, ME (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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to London with Cheapflights

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Cheap flight deals from Portland to London

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portland to London

Cheapest flights from Portland to LondonExplore 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 marzo 4, 2025.

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 marzo 4, 2025.

Find flights from Portland to London within your budget

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 March.

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.

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?

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 marzo 4, 2025.

Rainfall in London by month

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

Temperature in London by month

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

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 marzo 4, 2025.

Read reviews from past customers who have flown Delta, KLM and Austrian 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.

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?

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

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

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

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

How can I find direct flights from Portland to London?

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

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

Traveling to a place near Portland?

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Alternative routes for Portland to London

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Top 4 airlines flying from Portland to London

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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 marzo 4, 2025.