Skyscanner home

Cheap Flights from Portland to London

Compare Portland to London flight deals

Find the cheapest month or even day of the year to fly to London

Book the best London fare with no extra fees

Flight deals from Portland Airport to London

Looking for a cheap last-minute deal or the best return flight from Portland to London? Find the lowest prices on one-way and return tickets right here.
London.R 4,547 per passenger.Departing Tue, 6 Oct.One-way flight with United.Outbound indirect flight with United, departs from Portland on Tue, 6 Oct, arriving in London Heathrow.Price includes taxes and charges.From R 4,547, select.
London.R 5,214 per passenger.Departing Sun, 26 Jul.One-way flight with United.Outbound indirect flight with United, departs from Portland on Sun, 26 Jul, arriving in London Heathrow.Price includes taxes and charges.From R 5,214, select.
London.R 5,985 per passenger.Departing Sat, 22 Aug.One-way flight with United.Outbound indirect flight with United, departs from Portland on Sat, 22 Aug, arriving in London Heathrow.Price includes taxes and charges.From R 5,985, select.
London.R 6,374 per passenger.Departing Mon, 13 Apr.One-way flight with Breeze Airways.Outbound indirect flight with Breeze Airways, departs from Portland on Mon, 13 Apr, arriving in London Gatwick.Price includes taxes and charges.From R 6,374, select.
London.R 7,693 per passenger.Departing Sat, 13 Jun.One-way flight with United.Outbound indirect flight with United, departs from Portland on Sat, 13 Jun, arriving in London Heathrow.Price includes taxes and charges.From R 7,693, select.
London.R 9,192 per passenger.Departing Wed, 25 Mar.One-way flight with Air France.Outbound indirect flight with Air France, departs from Portland on Wed, 25 Mar, arriving in London Heathrow.Price includes taxes and charges.From R 9,192, select.

Find the cheapest month to fly from Portland to London

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to London flights are currently cheapest in October.
Mar
from R 9,192
Apr
from R 6,374
May
Find prices
Jun
from R 7,693
Jul
from R 5,214
Aug
from R 5,985
Sep
Find prices
Oct
from R 4,547
Nov
Find prices
Dec
Find prices
Jan
Find prices
Feb
Find prices

Alternative Portland to London routes

Looking for the cheapest, fastest or easiest route from Portland to London? You could fly into the following airports instead.

London City

12km from central London
Closest
from R 9,624
Search flights

London Heathrow

23km from central London
Cheapest
from R 4,547
Search flights

London Gatwick

40km from central London
from R 6,374
Search flights

London Luton

45km from central London
from R 8,842
Search flights

London Stansted

49km from central London
from R 8,776
Search flights

London Southend

57km from central London
from R 12,131
Search flights

Portland to London: Flight information

The things to know before you go.
Cheapest flight foundR 4,547
Cheapest month to flyOctober

Check out these London hotels

Ready to plan your stay? Other travellers rate these London hotels for cleanliness, service and location.
Taj 51 Buckingham Gate Suites and Residences
1.24 km from city centre
R 11 209
Per night
47 Park Street - Grand Residences by Marriott
1.89 km from city centre
R 13 974
Per night
Egerton House
3.02 km from city centre
R 7 006
Per night
Taj 51 Buckingham Gate Suites and Residences
1.24 km from city centre
R 11 209
Per night
47 Park Street - Grand Residences by Marriott
1.89 km from city centre
R 13 974
Per night
Egerton House
3.02 km from city centre
R 7 006
Per night
Explore top-rated hotels

Finding cheap flights from Portland to London: Frequently asked questions

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.
The best price we found for a return flight from Portland to London is R 14,005. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Portland to London. But we found flights with one or more stops from R 14,005.
As of March 2026, there are no flights flying from Portland to London.
The cheapest month to fly from Portland to London is usually April.
If you're flying from Portland Airport, the cheapest airport near London is London Heathrow – which is 22.9 km away from the centre of London. We've found flights into this airport from R 14,005.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to London on Wednesday, 29 April 2026.
No airlines currently offer direct flights between Portland Airport and London. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 6°C. August is typically the warmest month in London, when it usually averages around 22°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 1°C. The rainiest month is October.
Currently, Delta offers the cheapest flight tickets to London.

Flying from Portland International Jetport Airport (PWM) to London: what you need to know

  • Portland International Jetport Airport is located in Portland. Following the UTC+0 timezone, London is four hours ahead of Portland.

  • Leave enough time to make your PWM to London flight. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.

  • Heading away during a peak time like school or public holidays? Expect longer queues at security and check-in. To be on the safe side, arrive up to four hours before international flights and two hours before domestic departures.

  • Think about adding a stopover to potentially save on your flight ticket from PWM to London. All you need to do is uncheck 'Direct flights only' during your search. Take a break (and maybe save some cash) by stopping at one of these connecting airports:

    • John F. Kennedy International Airport (JFK)

    • Newark Liberty International Airport (EWR)

    • Orlando International Airport (MCO)

  • Travelling from central Portland to PWM takes about 40 minutes by public transport. If you drive, ride-share or take a cab, you'll cover the 5 kilometres in 15 minutes or so, depending on traffic conditions.

  • Want a relaxed start to your trip? Stay near PWM. Whether you have an early flight from Portland International Jetport Airport to London or want to avoid feeling rushed, these hotels are a convenient choice:

  • Portland International Jetport Airport gets top marks for on-time performance. 82.15% of flights that take off from PWM arrive at their destination without delay.

  • You'll find PWM at 1001 Westbrook Street.

How to find the cheapest flights from Portland International Jetport Airport (PWM) to London

  • R 4,547 is currently the lowest price for a one-way Portland International Jetport Airport to London flight. Return flight tickets start at R 14,005. These fares can change depending on availability.

  • Don't wait until the last moment. You're more likely to pick up cheap flights from PWM to London if you book ahead. Airlines often have some great early bird discounts.

  • The 'Whole month' search tool will show you the cheapest tickets from Portland International Jetport Airport to London across every month. It's a good way to find a bargain if your plans aren't set in stone.

  • There's no need to check back constantly to find out if fares have dropped when you set up a Price Alert. We'll update you the moment there's an even better deal on cheap flights from PWM to London.

  • Choose your preferred departure and arrival times, number of stops and airlines with our filters. Then, sort the results for your flight from Portland International Jetport Airport to London by 'Cheapest,' 'Best' or 'Fastest.'

Airports in London

London Heathrow Airport (LHR)

  • London Heathrow Airport (LHR) to the centre of London takes around 55 minutes to reach by car. The centre is roughly 31 kilometres away.

  • Getting to the centre by public transport takes about 1 hour.

  • If you're arriving on a late flight from Portland International Jetport Airport to London, nothing beats the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be showered and snoozing soon after at one of these accommodation options near LHR:

  • Grab a London Heathrow Airport rental car and discover London and beyond with your own set of wheels. Surprice, U-Save and Green Motion are leading providers you can book with here.

  • To get the lowest price, reserve your ride from London Heathrow Airport about one week ahead of your flight from PWM to London.

London Gatwick Airport (LGW)

  • Once your flight from Portland International Jetport Airport to London has hit the tarmac, you can get to the city centre in about 1 hour 20 minutes by car. Central London is roughly 80 kilometres from London Gatwick Airport (LGW).

  • The trip will take about 30 minutes on public transport.

  • There are some comfortable places to rest your head close to LGW. Tuck yourself in and get cosy after your PWM to London flight at any of these well-located options:

  • Green Motion, U-Save and Drivalia make picking up a London Gatwick Airport rental car quick and easy. These reliable suppliers are located in or around the terminal and will have you behind the wheel before you know it.

  • Score the best price by booking your ride from LGW three weeks ahead of time. You'll also have access to a wider range of vehicles.

Stansted Airport (STN)

  • Stansted Airport (STN) is around 64 kilometres from the centre of London. It'll take you about 1 hour to reach the city centre in a ride-share or cab after your flight from Portland International Jetport Airport to London.

  • Public transport can get you there in roughly 1 hour 25 minutes.

  • Enjoy a low-stress, comfortable start to your break by choosing a hotel near STN after your PWM to London flight. Unwind after a day of travel or simply give yourself time to get your footing in a new city at:

  • Whether you want a mini for a solo adventure or a roomy SUV to transport your group, you'll find the right Stansted Airport rental car for your needs. Explore the range of wheels available here from suppliers such as Green Motion, Drivalia and Europcar.

  • Plan ahead and enjoy the payoff. Book your vehicle from STN four weeks before your flight from Portland International Jetport Airport to London to access the best deals.

Best time to go to London

  • Plan your trip to London in high season if you want a bustling atmosphere, but remember that prices may be higher. Alternatively, book your flights from Portland International Jetport Airport to London during the off-season when prices are cheaper and it's less crowded.

  • The warmest month in London is July, with temperatures ranging between 11ºC (52ºF) and 26ºC (79ºF). Lock in your Portland International Jetport Airport to London flight ticket then if that's your definition of good weather.

  • Look for cheap tickets from PWM to London in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between 0ºC (32ºF) and 9ºC (48ºF) on average.

More about London

  • Start your London trip off on the right foot by choosing the ideal place to stay. As soon as you've booked your flight from Portland International Jetport Airport to London, check out our selection of hotels including:

  • There are so many things to see and do in this city it can be tricky to know where to start. The British Museum, Big Ben and Buckingham Palace are highlights which should be on any good London itinerary.

Explore more of United Kingdom

  • You've done London, now it's time to discover other corners of United Kingdom. Travel about 161 kilometres north-west to Birmingham to check off its popular sights. From Cadbury World to The Library of Birmingham and National Sea Life Centre, your itinerary will be busy.

  • Around 177 kilometres west of London, Bristol is another essential stop in United Kingdom. Experience the best of this destination with a visit to Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.

Plan the rest of your trip from Portland to London

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.