529 € Portland (PDX) to London (LOND) Cheap Flights

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Flight deals from Portland to London

Looking for a cheap last-minute deal or the best return flight from Portland Airport to London? If you want to travel next month, return fares start from 596 €. Find the lowest prices on one-way and return tickets right here.

London.529 € per passenger.Departing Mon, 20 Apr, returning Mon, 27 Apr.Return flight with Icelandair and Ryanair.Outbound indirect flight with Icelandair, departs from Portland on Mon, 20 Apr, arriving in London Stansted.Inbound indirect flight with Ryanair, departs from London Stansted on Mon, 27 Apr, arriving in Portland.Price includes taxes and charges.From 529 €, select.

London.590 € per passenger.Departing Thu, 4 Jun, returning Sun, 7 Jun.Return flight with Icelandair and Ryanair.Outbound indirect flight with Icelandair, departs from Portland on Thu, 4 Jun, arriving in London Stansted.Inbound indirect flight with Ryanair, departs from London Stansted on Sun, 7 Jun, arriving in Portland.Price includes taxes and charges.From 590 €, select.

London.596 € per passenger.Departing Fri, 22 May, returning Fri, 29 May.Return flight with Icelandair and Ryanair.Outbound indirect flight with Icelandair, departs from Portland on Fri, 22 May, arriving in London Stansted.Inbound indirect flight with Ryanair, departs from London Stansted on Fri, 29 May, arriving in Portland.Price includes taxes and charges.From 596 €, select.

London.601 € per passenger.Departing Mon, 27 Apr, returning Wed, 13 May.Return flight with Air France and easyJet.Outbound indirect flight with Air France, departs from Portland on Mon, 27 Apr, arriving in London Stansted.Inbound indirect flight with easyJet, departs from London Luton on Wed, 13 May, arriving in Portland.Price includes taxes and charges.From 601 €, select.

London.677 € per passenger.Departing Mon, 18 May, returning Mon, 1 Jun.Return flight with KLM and Ryanair.Outbound indirect flight with KLM, departs from Portland on Mon, 18 May, arriving in London Stansted.Inbound indirect flight with Ryanair, departs from London Stansted on Mon, 1 Jun, arriving in Portland.Price includes taxes and charges.From 677 €, select.

London.684 € per passenger.Departing Wed, 30 Sep, returning Wed, 7 Oct.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Portland on Wed, 30 Sep, arriving in London Heathrow.Inbound indirect flight with Icelandair, departs from London Heathrow on Wed, 7 Oct, arriving in Portland.Price includes taxes and charges.From 684 €, select.

London.685 € per passenger.Departing Mon, 5 Oct, returning Mon, 12 Oct.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Portland on Mon, 5 Oct, arriving in London Heathrow.Inbound indirect flight with Icelandair, departs from London Heathrow on Mon, 12 Oct, arriving in Portland.Price includes taxes and charges.From 685 €, select.

London.688 € per passenger.Departing Mon, 26 Oct, returning Sat, 7 Nov.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Portland on Mon, 26 Oct, arriving in London Heathrow.Inbound indirect flight with Icelandair, departs from London Heathrow on Sat, 7 Nov, arriving in Portland.Price includes taxes and charges.From 688 €, select.

London.688 € per passenger.Departing Mon, 16 Nov, returning Sun, 6 Dec.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Portland on Mon, 16 Nov, arriving in London Gatwick.Inbound indirect flight with Icelandair, departs from London Heathrow on Sun, 6 Dec, arriving in Portland.Price includes taxes and charges.From 688 €, select.

London.689 € per passenger.Departing Wed, 2 Sep, returning Wed, 16 Sep.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Portland on Wed, 2 Sep, arriving in London Gatwick.Inbound indirect flight with Icelandair, departs from London Heathrow on Wed, 16 Sep, arriving in Portland.Price includes taxes and charges.From 689 €, select.

London.696 € per passenger.Departing Thu, 20 Aug, returning Wed, 26 Aug.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Portland on Thu, 20 Aug, arriving in London Heathrow.Inbound indirect flight with Icelandair, departs from London Heathrow on Wed, 26 Aug, arriving in Portland.Price includes taxes and charges.From 696 €, select.

London.696 € per passenger.Departing Thu, 27 Aug, returning Wed, 16 Sep.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Portland on Thu, 27 Aug, arriving in London Heathrow.Inbound indirect flight with Icelandair, departs from London Heathrow on Wed, 16 Sep, arriving in Portland.Price includes taxes and charges.From 696 €, select.

London.732 € per passenger.Departing Tue, 1 Dec, returning Tue, 15 Dec.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Portland on Tue, 1 Dec, arriving in London Heathrow.Inbound indirect flight with Icelandair, departs from London Heathrow on Tue, 15 Dec, arriving in Portland.Price includes taxes and charges.From 732 €, select.

London.749 € per passenger.Departing Tue, 5 May, returning Tue, 15 Sep.Return flight with Alaska Airlines and Ryanair.Outbound indirect flight with Alaska Airlines, departs from Portland on Tue, 5 May, arriving in London Stansted.Inbound indirect flight with Ryanair, departs from London Stansted on Tue, 15 Sep, arriving in Portland.Price includes taxes and charges.From 749 €, select.

London.765 € per passenger.Departing Tue, 23 Feb, returning Tue, 9 Mar.Return flight with KLM.Outbound indirect flight with KLM, departs from Portland on Tue, 23 Feb, arriving in London Heathrow.Inbound indirect flight with KLM, departs from London Heathrow on Tue, 9 Mar, arriving in Portland.Price includes taxes and charges.From 765 €, select.

London.765 € per passenger.Departing Tue, 29 Dec, returning Tue, 12 Jan.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Portland on Tue, 29 Dec, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Tue, 12 Jan, arriving in Portland.Price includes taxes and charges.From 765 €, 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 April.

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Direct flights from Portland to London

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.

Portland to London: Flight information

The things to know before you go.

Cheapest flight found	204 €
Cheapest month to fly	April
Average flight time	9 hrs, 34 mins
Most popular airline	Aer Lingus
Average flights per week	64

Finding cheap flights from Portland to London: Frequently asked questions

How many airports are there in London?

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.

How much are return flights from Portland to London?

The best price we found for a return flight from Portland to London is 529 €. 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.

How long does it take to fly from Portland to London?

9 hours and 34 minutes is the average flight time from Portland to London.

Which airlines fly direct from Portland to London?

Aer Lingus, Alaska Airlines and American Airlines fly direct from Portland to London.

How many flights are there a week from Portland to London?

As of April 2026, there are 64 flights per week flying from Portland to London.

When is the cheapest time to fly from Portland to London?

The cheapest month to fly from Portland to London is usually April.

Which is the cheapest airport to fly into in London?

If you're flying from Portland Airport, the cheapest airport near London is London Stansted – which is 48.6 km away from the centre of London. We've found flights into this airport from 529 €.

Which upcoming date is cheapest to fly from Portland Airport to London on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to London on Monday, 20 April 2026.

Can I get a direct flight from Portland Airport to London?

Yes – the average flight time is 9 hours and 34 minutes.

How can I get the best flight deal from Portland Airport to London?

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.

When is the best time to book flights to London?

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.

What’s the weather like in London?

In April, the average temperature is usually around 9°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.

Which is the cheapest airline to fly from Portland Airport to London with?

Currently, Icelandair and British Airways offer the cheapest flight tickets to London.

Travelling from Portland International Airport (PDX) to London: what you need to know

Around 10 hours 5 minutes is how long you can expect to be travelling on a direct flight from Portland International Airport to London.
London is eight hours ahead of Portland, where Portland International Airport is located. London runs on the UTC+0 timezone.
Portland International Airport (PDX) to London Heathrow Airport (LHR) is the most popular route, with six weekly departures to pick from. You can travel from PDX to LHR at 18:30 with British Airways.
Leave plenty of time to catch your PDX to London flight. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.
During popular months such as July, it's a good idea to get to the airport earlier than usual. Arrive two hours before domestic departures and four hours ahead of an international flight whenever you're flying during peak periods in general.
Start your trip at PDX and fly nonstop to London Heathrow Airport (LHR). That will be your arrival point when searching for Portland International Airport to London tickets.
Keep an eye out for deals with British Airways. This airline has direct flights from Portland International Airport to London.
A stopover is the ideal opportunity to break up your journey and maybe even explore another city. When browsing for plane tickets from PDX to London, deselect the 'Direct flights only' box to see where you can stop along the way. Top options include:
- Denver International Airport (DEN)
- Amsterdam Schiphol Airport (AMS)
- Seattle-Tacoma International Airport (SEA)
Located around 10 kilometres from the centre of Portland, PDX can be reached in about 20 minutes by car, depending on traffic. Travelling on public transport takes roughly 40 minutes.
Looking for a hotel close to PDX? If you've booked an early flight from Portland International Airport to London, these stays will put you moments from check-in:
83% of flights leaving Portland International Airport arrive at their destination as planned. With its strong on-time stats, you're unlikely to be delayed when flying out of PDX.
You'll find PDX at 7000 NE Airport Way.

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

204 € is currently the lowest price for a one-way Portland International Airport to London flight. A return plane ticket starts from 529 €. These fares may change depending on demand.
Book two months before travelling. Research on pricing trends suggests this is the ideal window for finding cheap flights from PDX to London.
The best month for finding cheap Portland International Airport to London tickets is July. Use the 'Whole month' tool to compare prices, then choose the dates with the lowest fares.
Finding a cheap flight from PDX to London is easy with Price Alerts. All you need to do is create one of these automatic notifications and we'll get in touch as soon as a new discount appears.
Save money on your flight from Portland International Airport to London with the help of our filters. Choose your preferred times, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in London

London Heathrow Airport (LHR)

London Heathrow Airport (LHR) to central London takes around 45 minutes to reach by car. The centre is roughly 24 kilometres away.
Travelling on public transport takes about 25 minutes.
Look into staying at a hotel near LHR if you have a late flight from Portland International Airport to London. Select one of these accommodation options and make your arrival easier:
To get the lowest price, book your ride from London Heathrow Airport around one week ahead of your flight from PDX to London.

London Gatwick Airport (LGW)

The centre of London is about 48 kilometres from London Gatwick Airport (LGW). After your flight from Portland International Airport to London has touched down and you've made your way through the terminal, expect a drive of about 1 hour 5 minutes.
If you choose to travel on public transport, you'll get to the city centre in 1 hour 20 minutes or so.
After stepping off your PDX to London flight, settle in at a hotel near LGW. These are some great accommodation options that'll help you sink into relaxation mode:
Get what you want, not just what's left over. Securing your ride from LGW three weeks in advance often means better deals and a bigger choice of vehicles.

London Stansted Airport (STN)

London Stansted Airport (STN) is around 56 kilometres from central London. It'll take you about 1 hour 5 minutes to reach the city centre by car after your flight from Portland International Airport to London.
If you use public transport, the journey will take you around 45 minutes.
Enjoy a more leisurely start to your break by staying at a hotel near STN after your PDX to London flight. Unwind after a day of travel or simply take a moment to find your footing in a new place at:
Around four weeks before your flight from Portland International Airport to London is a good time to secure your vehicle from STN. You're more likely to get a better rate or pick up some early bird promotions.

Best time to go to London

January is the quietest month for flights from Portland International Airport to London, while July is the busiest. Find the ideal time to visit London based on whether you like a bustling atmosphere or a more laid-back vibe.
When booking your Portland International Airport to London plane ticket, think about the kind of weather forecast you're hoping for. July is the warmest month in London, with temperatures ranging from 11ºC (52ºF) to 26ºC (79ºF).
January has average temperatures of between 0ºC (32ºF) and 9ºC (48ºF). Look for a cheap ticket from PDX to London around that time if you want to travel when it's cooler.

More about London

When it comes to searching for somewhere to lay your head, you'll find the best stays in London right here. Check out these options as soon as you've locked in your flight from Portland International Airport to London:
Westminster Abbey and The British Museum are just two of the big attractions to add to your London travel itinerary. Continue your sightseeing adventures at Big Ben.

Explore more of the United Kingdom

London is always a good idea, but there are so many other corners of the United Kingdom waiting to be explored. About 257 kilometres northwest of London, a visit to Manchester will keep your itinerary busy. Start with leading sights like Manchester United Museum & Stadium Tour, The Homes of Football and Museum of Science and Industry.
If you're ready to explore another well-known destination in the United Kingdom, consider Birmingham, about 161 kilometres northwest of London. Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience are among the biggest draws.