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 £466. Other airlines that can offer you cheap pricing are Scandinavian Airlines, from £526, and Virgin Atlantic, from £534. JetBlue is currently priced 33% below the average price you’ll pay for this route.

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

£236 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from £378 and £382, respectively.

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

The most popular flight routes from Portland, Maine to London are Portland - London Gatwick, Portland - London Heathrow and Portland - London City.

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 November, with the cheapest ticket starting at £550.

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

A simple way to save on the total cost of your ticket is to fly from Portland, Maine to London at midday. If you’re flexible enough to do this you can expect to save up to 6% on your trip compared to booking a flight in the morning.

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 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.

£236+ Flights from Portland, Maine to London

Cheap flight deals from Portland to London

Round-trip from	£466
One-way from	£236
Popular in	June
Cheapest in	November
Average price	£640

JetBlue
4/4-10/4
2 total stops
25h 40m total
Portland to London

Search Deals

JetBlue
25/4
1 total stop
10h 55m total
Portland to London

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (£128 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 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 22 February 2025.

Fri 4/406:10PWM - LHR

1 stop9h 35mJetBlue

Thu 10/411:55LHR - PWM

1 stop16h 05mJetBlue

Deal found 21/2£466

Tue 8/415:08PWM - LHR

2 stops19h 52mScandinavian Airlines

Tue 15/419:50LHR - PWM

2 stops33h 50mScandinavian Airlines

Deal found 22/2£526

Tue 8/405:30PWM - LHR

1 stop20h 15mVirgin Atlantic

Tue 15/411:45LHR - PWM

1 stop16h 29mVirgin Atlantic

Deal found 22/2£534

Tue 8/412:45PWM - LHR

1 stop13h 10mUnited Airlines

Tue 15/414:05LHR - PWM

2 stops28h 31mUnited Airlines

Deal found 22/2£538

Tue 8/405:30PWM - LCY

2 stops20h 45mVirgin Atlantic

Tue 15/410:00LCY - PWM

2 stops18h 14mVirgin Atlantic

Deal found 22/2£564

Fri 4/406:15PWM - LHR

2 stops19h 15mMultiple Airlines

Fri 11/406:00LHR - PWM

2 stops22h 27mMultiple Airlines

Deal found 21/2£575

Fri 4/415:08PWM - LHR

1 stop14h 07mDelta

Thu 10/411:45LHR - PWM

2 stops17h 38mDelta

Deal found 21/2£583

Fri 28/315:00PWM - LHR

1 stop12h 55mKLM

Fri 4/415:15LHR - PWM

1 stop13h 44mKLM

Deal found 21/2£595

Thu 17/406:15PWM - LHR

2 stops33h 45mAir Canada

Mon 21/417:40LHR - PWM

2 stops34h 47mAir Canada

Deal found 22/2£613

Tue 8/406:10PWM - LGW

2 stops25h 50mTurkish Airlines

Tue 15/417:15LGW - PWM

2 stops28h 25mTurkish Airlines

Deal found 22/2£738

Fri 28/307:00PWM - LGW

2 stops22h 45mMultiple Airlines

Fri 4/412:40LGW - PWM

2 stops15h 30mMultiple Airlines

Deal found 21/2£754

Fri 18/406:15PWM - LHR

2 stops34h 25mAustrian Airlines

Sat 26/419:30LHR - PWM

2 stops32h 57mAustrian Airlines

Deal found 21/2£791

Best flights from Portland to London
Discover carefully curated flight deals from Portland to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 February 2025.

Fri 4/406:10PWM - LHR

1 stop9h 35mJetBlue

Thu 10/411:55LHR - PWM

1 stop16h 05mJetBlue

Deal found 21/2£466

Tue 8/415:08PWM - LHR

2 stops19h 52mScandinavian Airlines

Tue 15/419:50LHR - PWM

2 stops33h 50mScandinavian Airlines

Deal found 22/2£526

Tue 8/405:30PWM - LHR

1 stop20h 15mVirgin Atlantic

Tue 15/411:45LHR - PWM

1 stop16h 29mVirgin Atlantic

Deal found 22/2£534

Tue 8/412:45PWM - LHR

1 stop13h 10mUnited Airlines

Tue 15/414:05LHR - PWM

2 stops28h 31mUnited Airlines

Deal found 22/2£538

Fri 4/406:15PWM - LHR

2 stops19h 15mMultiple Airlines

Fri 11/406:00LHR - PWM

2 stops22h 27mMultiple Airlines

Deal found 21/2£575

Fri 4/415:08PWM - LHR

1 stop14h 07mDelta

Thu 10/411:45LHR - PWM

2 stops17h 38mDelta

Deal found 21/2£583

Fri 28/315:00PWM - LHR

1 stop12h 55mKLM

Fri 4/415:15LHR - PWM

1 stop13h 44mKLM

Deal found 21/2£595

Thu 17/406:15PWM - LHR

2 stops33h 45mAir Canada

Mon 21/417:40LHR - PWM

2 stops34h 47mAir Canada

Deal found 22/2£613

Fri 18/406:15PWM - LHR

2 stops34h 25mAustrian Airlines

Sat 26/419:30LHR - PWM

2 stops32h 57mAustrian Airlines

Deal found 21/2£791

Fri 27/614:20PWM - LGW

2 stops27h 00mTurkish Airlines

Sun 13/710:55LGW - PWM

2 stops31h 28mTurkish Airlines

Deal found 21/2£926

Fri 28/307:00PWM - LGW

2 stops22h 45mMultiple Airlines

Fri 4/412:40LGW - PWM

2 stops15h 30mMultiple Airlines

Deal found 21/2£754

Sun 22/606:10PWM - LHR

2 stops22h 40mTurkish Airlines

Sun 29/619:05LHR - PWM

2 stops33h 32mTurkish Airlines

Deal found 22/2£957

Last-minute flights from Portland to London
Discover last-minute flight deals from Portland to London. Data last updated 22 February 2025 and is based on user searches.

Wed 12/311:20PWM - LHR

2 stops27h 20mAustrian Airlines

Mon 17/319:25LHR - PWM

2 stops27h 14mAustrian Airlines

Deal found 21/2£1,299

Wed 12/306:10PWM - LHR

3 stops20h 20mAir Canada

Mon 17/318:00LHR - PWM

3 stops28h 39mAir Canada

Deal found 21/2£1,414

Wed 12/315:00PWM - LCY

2 stops13h 10mDelta

Mon 17/309:20LCY - PWM

2 stops18h 55mDelta

Deal found 21/2£1,602

Fri 28/306:10PWM - LHR

1 stop10h 25mUnited Airlines

Fri 4/412:10LHR - PWM

2 stops16h 17mUnited Airlines

Deal found 21/2£580

Fri 28/315:00PWM - LHR

1 stop12h 55mKLM

Fri 4/415:15LHR - PWM

1 stop13h 44mKLM

Deal found 21/2£595

Fri 28/315:00PWM - LHR

3 stops23h 30mScandinavian Airlines

Fri 4/407:05LHR - PWM

2 stops22h 18mScandinavian Airlines

Deal found 21/2£618

Fri 28/307:00PWM - LGW

2 stops22h 45mMultiple Airlines

Fri 4/412:40LGW - PWM

2 stops15h 30mMultiple Airlines

Deal found 21/2£754

Fri 28/307:00PWM - LCY

3 stops23h 45mMultiple Airlines

Fri 4/406:45LCY - PWM

3 stops21h 25mMultiple Airlines

Deal found 21/2£1,141

Sat 29/306:10PWM - LHR

2 stops22h 50mMultiple Airlines

Mon 7/419:30LHR - PWM

2 stops32h 57mMultiple Airlines

Deal found 21/2£575

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 22 February 2025.

Fri 25/417:35PWM - LHR

1 stop10h 55mJetBlue

Deal found 22/2£236

Sun 23/306:01PWM - LHR

2 stops21h 09mAir Canada

Deal found 21/2£378

Sun 23/319:20PWM - LHR

1 stop11h 45mUnited Airlines

Deal found 21/2£382

Fri 25/417:50PWM - LGW

3 stops48h 05mMultiple Airlines

Deal found 22/2£387

Sun 23/311:08PWM - LHR

3 stops50h 22mMultiple Airlines

Deal found 21/2£406

Fri 25/416:16PWM - LCY

2 stops13h 34mMultiple Airlines

Deal found 22/2£541

Wed 18/617:00PWM - LHR

2 stops38h 05mWestJet

Deal found 22/2£544

Wed 18/614:20PWM - LGW

3 stops40h 00mTAP AIR PORTUGAL

Deal found 21/2£643

Wed 18/618:55PWM - LHR

1 stop13h 35mVirgin Atlantic

Deal found 22/2£651

Wed 18/614:35PWM - LGW

1 stop14h 25mDelta

Deal found 21/2£658

Wed 18/612:50PWM - LCY

2 stops14h 20mDelta

Deal found 21/2£697

Fri 25/414:59PWM - LHR

2 stops20h 01mScandinavian Airlines

Deal found 22/2£2,439

Find flights from Portland to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 4/4

06:10-20:45

1 stop9h 35m

London Heathrow

Fri 11/4

08:15-16:40

1 stop13h 25m

£466

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 8/4

15:08-16:00

2 stops19h 52m

London Heathrow

Tue 15/4

19:50-00:40

2 stops33h 50m

£526

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 8/4

05:30-06:45

1 stop20h 15m

London Heathrow

Tue 15/4

11:45-23:14

1 stop16h 29m

£534

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 8/4

12:45-06:55

1 stop13h 10m

London Heathrow

Tue 15/4

14:05-13:36

2 stops28h 31m

£538

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 4/4

06:15-06:30

2 stops19h 15m

London Heathrow

Fri 11/4

06:00-23:27

2 stops22h 27m

£575

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 4/4

15:08-10:15

1 stop14h 07m

London Heathrow

Thu 10/4

11:45-00:23

2 stops17h 38m

£583

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 28/3

15:00-07:55

1 stop12h 55m

London Heathrow

Fri 4/4

15:15-23:59

1 stop13h 44m

£595

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 17/4

06:15-21:00

2 stops33h 45m

London Heathrow

Mon 21/4

17:40-23:27

2 stops34h 47m

£613

PortlandLondon

PWM - LGW

PWMLGW

Portland

Fri 28/3

07:00-09:45

2 stops22h 45m

London Gatwick

Fri 4/4

12:40-23:10

2 stops15h 30m

£754

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 18/4

06:15-21:40

2 stops34h 25m

London Heathrow

Sat 26/4

19:30-23:27

2 stops32h 57m

£791

Flights are sorted by cheapest return flights first.

Deals found on 22/2

Showing 1-10 of 27 results

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, January is the cheapest month in which you can book a flight from Portland, Maine to London (average of £112). Flying from Portland, Maine to London in August is currently the most expensive (average of £163). 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

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

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 a feel of what it's like to fly with Delta, KLM and Austrian Airlines 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.

Delta

8.0

Very Good

8,203 reviews

Check prices

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

8,203 reviews

Delta

8.0

Very Good

8,203 reviews

Check prices

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

1,332 reviews

Delta

8.0

Very Good

8,203 reviews

Check prices

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

771 reviews

Delta

8.0

Very Good

8,203 reviews

Check prices

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

7.5

Good

653 reviews

Delta

8.0

Very Good

8,203 reviews

Check prices

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.

JetBlue

7.4

Good

3,068 reviews

Delta

8.0

Very Good

8,203 reviews

Check prices

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 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.
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 £466. Other airlines that can offer you cheap pricing are Scandinavian Airlines, from £526, and Virgin Atlantic, from £534. JetBlue is currently priced 33% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Portland, Maine to London one-way?
£236 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from £378 and £382, respectively.
What are the most popular routes from Portland, Maine to London?
The most popular flight routes from Portland, Maine to London are Portland - London Gatwick, Portland - London Heathrow and Portland - London City.
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.
What is the cheapest month to book a flight from Portland, Maine to London?
Currently, January is the cheapest month in which you can book a flight from Portland, Maine to London (average of £112). Flying from Portland, Maine to London in August is currently the most expensive (average of £163). 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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Milton Keynes

Croydon

Gatwick

Slough

Luton

Ilford

Hayes

Eastbourne

Wembley

Southend-on-Sea

Ipswich

Winchester

Maidstone

Crawley

Southall

Watford

Dartford

Stansted

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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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Cheap flights from Portland, Maine to London from £236

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 25/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portland to London

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 22 February 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 22 February 2025.

Find flights from Portland to London within your budget

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?

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 a feel of what it's like to fly with Delta, KLM and Austrian Airlines 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.

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?

Travelling to a place near Portland?

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.

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?

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

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

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

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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 22 February 2025.