Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from London to Portland
The cheapest flights right now
London – Portland
Outbound – Nov 16, 2026
direct
10h 15m Return – Dec 1, 2026
direct
9h 35m $1,002
yesterday
London – Portland
Outbound – Nov 16, 2026
direct
10h 15m Return – Dec 1, 2026
direct
9h 35m $1,040
2 days ago
London – Portland
Outbound – Nov 16, 2026
direct
10h 15m Return – Dec 1, 2026
direct
9h 35m $1,039
2 days ago
London – Portland
Outbound – Nov 16, 2026
direct
10h 15m Return – Dec 1, 2026
direct
9h 35m $1,013
2 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$627
Average price of a round trip
$793
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
10h15
A flight from London to Portland takes on average 10h15.
Best time
July
According to user searches, the ideal month to go to Portland is July.
Tips for finding a cheap flight from London to Portland
Check out our tips for booking your flight to Portland (USA) from London (United Kingdom) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is November, with an average flight ticket price of $721 (calculation over the last two years). The most touristic season corresponds to the months of November, October and September.
For the cheapest flights, it is advisable to buy your ticket at least 53 days before the departure date.
The airline offering the cheapest flight tickets is Icelandair. A ticket from the airline Icelandair to Portland costs on average $762.
The airlines that offer the most flights are British Airways, Iberia and British Airways.
info departure city :
London, United Kingdom
airports :
London City Airport (LCY)
London Gatwick Airport (LGW)
London Heathrow Airport (LHR)
London Luton Airport (LTN)
London-Stansted Airport (STN)
local time :
London is a city in the country United Kingdom, the time zone is [[timezone]]. In London, it is currently {fromLocalTime}, the temperature is on average 12°C, with a minimum of 10°C and a maximum of 14°C.
The city of London (LON) has 5 airport(s): London City, London Gatwick, London Heathrow, London Luton and London-Stansted
destination info :
Portland, USA
airports :
Portland International Airport (PDX)
Pearson Airpark (VUO)
local time :
Portland is in the country USA, the time zone is [[timezone]]. In Portland, it is currently {toLocalTime}, the temperature is on average 14°C, with a minimum of 11°C and a maximum of 19°C.
The city of Portland has 2 airport(s): Portland and Pearson Airpark
Useful info about Portland
What is the least touristic period to go to Portland?
If you want to visit Portland during the least touristic period, choose the month of July.
What is the most popular time to travel to Portland?
In Portland, the most popular month is November. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from London to Portland?
According to our data, it is recommended to book your flight 53 days before your departure. If you book your flight ticket 8 weeks before your departure, you may find a price below average. You can also choose morning flights that are 13% cheaper than afternoon and evening flights. The cheapest day to book a flight from London to Portland is Monday.
What are the arrival and destination airports when traveling between London and Portland?
When you leave, you can leave from London City, London Gatwick, London Heathrow, London Luton or London-Stansted, and you will arrive at Portland.
How to reach London airport from the city centre?
The airport London City is located 16 km, London Gatwick is located 38 km, London Heathrow is located 35 km, London Luton is located 45 km or London-Stansted is located 49 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from London to Portland?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between London and Portland?
In summer, the average temperature is 20°C in Portland and 18°C in London. The average rainfall in summer is 19 mm in Portland and 63 mm in London. In summer, it is warmer in Portland and it rains less in Portland. In winter, it is colder in London and it rains more in Portland.
