Cheap Flights from London to Portland

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Flight deals from London to Portland

Looking for a cheap last-minute deal or the best round-trip flight from London to Portland Airport? If you want to travel next month, round-trip fares start from $740. Find the lowest prices on one-way and round-trip tickets right here.

Portland.$711 per passenger.Departing Wed, May 20, returning Wed, Jun 3.Round-trip flight with Ryanair and KLM.Outbound indirect flight with Ryanair, departing from London Stansted on Wed, May 20, arriving in Portland.Inbound indirect flight with KLM, departing from Portland on Wed, Jun 3, arriving in London Stansted.Price includes taxes and charges.From $711, select.

Portland.$721 per passenger.Departing Sun, May 10, returning Wed, May 20.Round-trip flight with Ryanair and Icelandair.Outbound indirect flight with Ryanair, departing from London Stansted on Sun, May 10, arriving in Portland.Inbound indirect flight with Icelandair, departing from Portland on Wed, May 20, arriving in London Stansted.Price includes taxes and charges.From $721, select.

Portland.$727 per passenger.Departing Mon, Jun 22, returning Wed, Aug 5.Round-trip flight with Ryanair and Icelandair.Outbound indirect flight with Ryanair, departing from London Stansted on Mon, Jun 22, arriving in Portland.Inbound indirect flight with Icelandair, departing from Portland on Wed, Aug 5, arriving in London Stansted.Price includes taxes and charges.From $727, select.

Portland.$735 per passenger.Departing Wed, Nov 18, returning Tue, Dec 1.Round-trip flight with easyJet and Icelandair.Outbound indirect flight with easyJet, departing from London Southend on Wed, Nov 18, arriving in Portland.Inbound indirect flight with Icelandair, departing from Portland on Tue, Dec 1, arriving in London Gatwick.Price includes taxes and charges.From $735, select.

Portland.$736 per passenger.Departing Fri, Sep 4, returning Wed, Sep 23.Round-trip flight with Ryanair and Icelandair.Outbound indirect flight with Ryanair, departing from London Stansted on Fri, Sep 4, arriving in Portland.Inbound indirect flight with Icelandair, departing from Portland on Wed, Sep 23, arriving in London Stansted.Price includes taxes and charges.From $736, select.

Portland.$738 per passenger.Departing Wed, Nov 11, returning Mon, Nov 30.Round-trip flight with easyJet and Icelandair.Outbound indirect flight with easyJet, departing from London Southend on Wed, Nov 11, arriving in Portland.Inbound indirect flight with Icelandair, departing from Portland on Mon, Nov 30, arriving in London Stansted.Price includes taxes and charges.From $738, select.

Portland.$739 per passenger.Departing Sat, Jun 27, returning Fri, Sep 4.Round-trip flight with Ryanair and Icelandair.Outbound indirect flight with Ryanair, departing from London Stansted on Sat, Jun 27, arriving in Portland.Inbound indirect flight with Icelandair, departing from Portland on Fri, Sep 4, arriving in London Stansted.Price includes taxes and charges.From $739, select.

Portland.$740 per passenger.Departing Mon, Jun 1, returning Sun, Jun 7.Round-trip flight with Ryanair and Icelandair.Outbound indirect flight with Ryanair, departing from London Stansted on Mon, Jun 1, arriving in Portland.Inbound indirect flight with Icelandair, departing from Portland on Sun, Jun 7, arriving in London Stansted.Price includes taxes and charges.From $740, select.

Portland.$743 per passenger.Departing Sun, Aug 30, returning Thu, Sep 10.Round-trip flight with easyJet and KLM.Outbound indirect flight with easyJet, departing from London Luton on Sun, Aug 30, arriving in Portland.Inbound indirect flight with KLM, departing from Portland on Thu, Sep 10, arriving in London Stansted.Price includes taxes and charges.From $743, select.

Portland.$755 per passenger.Departing Wed, Jun 24, returning Wed, Jul 8.Round-trip flight with Wizz Air and Icelandair.Outbound indirect flight with Wizz Air, departing from London Luton on Wed, Jun 24, arriving in Portland.Inbound indirect flight with Icelandair, departing from Portland on Wed, Jul 8, arriving in London Stansted.Price includes taxes and charges.From $755, select.

Portland.$767 per passenger.Departing Thu, May 21, returning Mon, Aug 31.Round-trip flight with Ryanair and KLM.Outbound indirect flight with Ryanair, departing from London Stansted on Thu, May 21, arriving in Portland.Inbound indirect flight with KLM, departing from Portland on Mon, Aug 31, arriving in London Stansted.Price includes taxes and charges.From $767, select.

Portland.$768 per passenger.Departing Thu, Oct 1, returning Sat, Oct 10.Round-trip flight with Wizz Air UK and KLM.Outbound indirect flight with Wizz Air UK, departing from London Luton on Thu, Oct 1, arriving in Portland.Inbound indirect flight with KLM, departing from Portland on Sat, Oct 10, arriving in London Stansted.Price includes taxes and charges.From $768, select.

Portland.$795 per passenger.Departing Tue, Oct 27, returning Sat, Nov 28.Round-trip flight with Wizz Air UK and Icelandair.Outbound indirect flight with Wizz Air UK, departing from London Luton on Tue, Oct 27, arriving in Portland.Inbound indirect flight with Icelandair, departing from Portland on Sat, Nov 28, arriving in London Luton.Price includes taxes and charges.From $795, select.

Portland.$799 per passenger.Departing Sat, Sep 26, returning Fri, Oct 2.Round-trip flight with Wizz Air UK and KLM.Outbound indirect flight with Wizz Air UK, departing from London Luton on Sat, Sep 26, arriving in Portland.Inbound indirect flight with KLM, departing from Portland on Fri, Oct 2, arriving in London Stansted.Price includes taxes and charges.From $799, select.

Portland.$799 per passenger.Departing Tue, Jul 28, returning Sun, Aug 9.Round-trip flight with Ryanair and Icelandair.Outbound indirect flight with Ryanair, departing from London Stansted on Tue, Jul 28, arriving in Portland.Inbound indirect flight with Icelandair, departing from Portland on Sun, Aug 9, arriving in London Stansted.Price includes taxes and charges.From $799, select.

Portland.$824 per passenger.Departing Wed, Aug 19, returning Sat, Aug 29.Round-trip flight with Condor.Outbound indirect flight with Condor, departing from London Gatwick on Wed, Aug 19, arriving in Portland.Inbound indirect flight with Condor, departing from Portland on Sat, Aug 29, arriving in London Gatwick.Price includes taxes and charges.From $824, select.

Find the cheapest month to fly from London to Portland

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to Portland flights are currently cheapest in May.

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Direct flights from London to Portland

London to Portland: Alternative routes

Compare routes from London to Portland below. You may find an airport to fly into that's cheaper, faster, or easier than Portland.

Portland

10km from central Portland

ClosestCheapest

from $711

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Salem

72km from central Portland

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London to Portland: Flight information

The things to know before you go.

Cheapest flight found	$708
Cheapest month to fly	May
Average flight time	10 hrs, 7 mins
Most popular airline	Aer Lingus
Average flights per week	135

Finding cheap flights from London to Portland: Frequently asked questions

How much are round-trip flights from London to Portland?

The best price we found for a round-trip flight from London to Portland is $708. 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 London to Portland?

10 hours and 7 minutes is the average flight time from London to Portland.

Which airlines fly direct from London to Portland?

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

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

There are 45 flights per week flying from London to Portland, as of May 2026.

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

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

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to Portland Airport on Wednesday, May 20, 2026.

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

Yes – the average flight time is 10 hours and 7 minutes.

How can I find the best flight deal to Portland?

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 Portland 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 Portland?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Portland is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from London to Portland International Airport (PDX): What you need to know

Planning your trip begins with working out where you'll leave from in London. London Heathrow Airport (LHR) is the city's main base, so check out your options for booking a flight from London to Portland International Airport (PDX) departing from here.
10 hours 5 minutes is the average duration of a direct London to Portland International Airport flight.
The timezone in Portland is UTC-8, which is eight hours behind London. Portland International Airport is located in Portland.
London Heathrow Airport (LHR) to Portland International Airport (PDX) is the busiest route, with 6 direct services each week. You can travel from LHR to PDX on British Airways's 2:20pm flight.
Get to the airport on time so you don't miss your flight from London to PDX. Be there at least two hours ahead for international flights and an hour early for domestic departures to skip the mad dash to your gate.
You'll likely experience longer lines during popular months such as July and other peak seasons. Arriving up to four hours ahead of international flights and two hours for a domestic departure will give you plenty of time for security and boarding.

Airports in London

London Heathrow Airport (LHR)

Get to your destination in one go from London Heathrow Airport (LHR). Direct flights from London to Portland International Airport (PDX) are available from here.
British Airways is a popular carrier that operates direct flights from London to Portland International Airport departing from LHR.
The top choice among passengers flying between LHR and PDX is British Airways.
The most reliable carrier for punctuality on this route is British Airways. Its services land without delay 70.0% of the time.
Think about adding a stopover to find cheap flights from London to PDX. Simply uncheck 'Direct flights only' when browsing departures from London Heathrow Airport (LHR). Make a stop (and maybe make your fare cheaper) by passing through one of these popular airports:
- Seattle-Tacoma International Airport (SEA)
- Vancouver International Airport (YVR)
- Keflavik Airport (KEF)
Located around 24 kilometers from central London, LHR can be reached in about 45 minutes by car (depending on traffic). The journey by public transport is roughly 25 minutes.
Planning to catch an early flight from London to Portland International Airport? Avoid the stress of rushing to the terminal (and enjoy a few extra z's) by staying at one of these hotels close to London Heathrow Airport:
78% of flights that depart London Heathrow Airport land at their destination on time.

London Gatwick Airport (LGW)

Add another location to your travels or just take a moment to stretch your legs with a stopover. If you'd like to break up your flight from London to Portland International Airport, browse these options when heading out from London Gatwick Airport:
- Amsterdam Schiphol Airport (AMS)
- Vancouver International Airport (YVR)
- Keflavik Airport (KEF)
LGW is around 48 kilometers from central London. It'll take you 1 hour 5 minutes or so to get to the airport by car from the city center. Public transport takes roughly 1 hour 20 minutes.
Want to treat yourself to an extra night away before your London to PDX flight? Check in to a hotel near London Gatwick Airport before your trip officially begins. These stays have a room with your name on it:
London Gatwick Airport has a track record for punctuality. 82% of flights out of here arrive right on target.

London Stansted Airport (STN)

Whether just for an hour or two or a weekend, a stopover can make your journey feel a bit less hectic. When flying out of London Stansted Airport (STN), you can book a plane ticket from London to Portland International Airport (PDX) stopping at Amsterdam Schiphol Airport (AMS).
STN is around 56 kilometers from central London. The drive from the city center to the terminal takes about 1 hour 5 minutes. If you're planning to take public transport, you can expect a journey of around 45 minutes.
Make catching an early London to Portland International Airport flight the easiest part of your journey. Stay at one of these hotels close to London Stansted Airport and get to your check-in counter with plenty of time to spare:
STN has a stellar on-time arrivals rating of 80%, so you can count on your flight to stay on track and reach your destination as planned.

About Portland International Airport (PDX)

If you're coming in on a late flight from London to Portland International Airport, nothing tops the convenience of staying near the terminal. Grab your luggage from the carousel and then be showered and sleeping soon after at one of these options near PDX:
To get the best deal, book your vehicle around one week ahead of your London to Portland International Airport flight.
The street address for PDX is 7000 NE Airport Way.

Getting from Portland International Airport (PDX) to central Portland

Portland International Airport to the center of Portland is around 10 kilometers. If you're renting a car or getting a cab, do some research to make your trip as smooth as possible. Journey times can vary based on traffic conditions and the time of day.
It takes roughly 40 minutes to get there using public transport.

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

$405 is currently the best price for a one-way ticket from London to Portland International Airport. Return flights start from $708. These prices can change based on availability and demand.
Don't leave things to the last minute. You're more likely to walk away with cheap flights from London to PDX if you book ahead. Airlines often have some fantastic early bird discounts.
If you can be flexible with your trip dates, try using the 'Whole month' tool. It'll give you the lowest price across the month when searching for your London to Portland International Airport ticket.
There's no need to search every day to find out if fares have dropped when you set up a Price Alert. We'll notify you the moment a better deal is available on plane tickets from London to PDX.
Filters make it easier to snap up a deal on your flight from London to Portland International Airport. Choose the airlines, flight times and stops that match your plans. Then sort the results by 'Cheapest' to find the best price quickly.

The best time to fly from London to Portland International Airport (PDX)

July is the most popular month for flights from London to Portland International Airport (PDX). Visit Portland in December if you prefer a quieter experience.
Before locking in your London to PDX plane ticket, consider the kind of weather forecast you're hoping for. August is the warmest month in Portland, with temperatures ranging from 12ºC (54ºF) to 31ºC (88ºF).
Look for cheap tickets from London to Portland International Airport in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between -2ºC (28ºF) and 10ºC (50ºF).

More about Portland

After booking your flight from London to Portland International Airport, find a hotel that's got location and comfort covered. Make one of these options your base for exploring Portland:
Your visit to Portland should come with a bit of sightseeing. Highlights that belong on your itinerary include Portland Japanese Garden, Peninsula Park Rose Garden and Beyond Van Gogh Portland.

Explore more of the United States

Portland will leave a lasting impression, but there are so many other corners of the United States waiting to be explored. About 225 kilometers north of Portland, a trip to Seattle will keep you on the move. Start with popular sights like Space Needle, Pike Place Market and Seattle Skyline.
Tacoma is another standout destination in the United States and is around 193 kilometers north of Portland. No journey is complete without visiting LeMay - America's Car Museum, Chihuly Bridge of Glass and Point Defiance Park.