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Cheap flights from London to Portland from £450

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Portland departing on 2/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London to Portland

Cheap return flights

Air Canada Logo
10:15 - 18:46LHR-PDX
16h 31m2 stops
Air Canada Logo
15:25 - 13:20PDX-LHR
13h 55m1 stop
£502Air Canada
Find Deal
lun, 6 ott - lun, 20 ott
Air Canada Logo
10:15 - 18:46LHR-PDX
16h 31m2 stops
Air Canada Logo
15:25 - 13:20PDX-LHR
13h 55m1 stop
£505Air Canada
Find Deal
lun, 29 set - lun, 20 ott
Icelandair Logo
15:40 - 17:55LGW-PDX
34h 15m1 stop
Icelandair Logo
15:20 - 14:35PDX-LGW
15h 15m1 stop
£520Icelandair
Find Deal
lun, 13 ott - lun, 20 ott
British Airways Logo
13:45 - 15:55LHR-PDX
10h 10mdirect
British Airways Logo
17:45 - 11:20PDX-LHR
9h 35mdirect
£522British Airways
Find Deal
lun, 24 nov - lun, 1 dic
Virgin Atlantic Logo
17:50 - 11:25LCY-PDX
25h 35m1 stop
Virgin Atlantic Logo
13:25 - 09:30PDX-LCY
12h 05m1 stop
£542Virgin Atlantic
Find Deal
dom, 9 nov - lun, 24 nov
British Airways Logo
13:45 - 15:55LHR-PDX
10h 10mdirect
British Airways Logo
14:16 - 11:40PDX-LHR
14h 24m1 stop
£544British Airways
Find Deal
ven, 6 mar - mar, 10 mar
Virgin Atlantic Logo
08:40 - 19:19LCY-PDX
18h 39m2 stops
Virgin Atlantic Logo
13:15 - 09:30PDX-LCY
12h 15m1 stop
£547Virgin Atlantic
Find Deal
lun, 6 ott - lun, 20 ott
Icelandair Logo
21:25 - 17:55LHR-PDX
28h 30m1 stop
Icelandair Logo
15:20 - 11:50PDX-LHR
12h 30m1 stop
£560Icelandair
Find Deal
lun, 20 ott - sab, 25 ott
Finnair Logo
15:40 - 17:35LHR-PDX
9h 55mdirect
Finnair Logo
23:59 - 06:50PDX-LHR
23h 51m1 stop
£597Finnair
Find Deal
mer, 22 ott - dom, 26 ott
Finnair Logo
13:45 - 15:55LHR-PDX
10h 10mdirect
Finnair Logo
18:45 - 11:20PDX-LHR
9h 35mdirect
£609Finnair
Find Deal
ven, 6 mar - ven, 13 mar

Air Canada flights from London to Portland

Our best Air Canada deals on London to Portland flight tickets
Air Canada
6 Oct
LHR10:15London Heathrow
16h 31m
2 stops
PDX18:46Portland
20 Oct
PDX15:25Portland
13h 55m
1 stop
LHR13:20London Heathrow
£502
Find similar
Air Canada
29 Sept
LHR10:15London Heathrow
16h 31m
2 stops
PDX18:46Portland
20 Oct
PDX15:25Portland
13h 55m
1 stop
LHR13:20London Heathrow
£505
Find similar
Air Canada
6 Oct
LHR10:15London Heathrow
20h 46m
2 stops
PDX23:01Portland
20 Oct
PDX09:55Portland
17h 55m
2 stops
LHR11:50London Heathrow
£506
Find similar

Lufthansa flights from London to Portland

Our best Lufthansa deals on London to Portland flight tickets
Lufthansa
23 Sept
LHR09:30London Heathrow
19h 07m
2 stops
PDX20:37Portland
6 Oct
PDX12:53Portland
12h 47m
1 stop
LHR09:40London Heathrow
£561
Find similar
Lufthansa
23 Oct
LCY08:45London City
20h 05m
2 stops
PDX20:50Portland
29 Oct
PDX19:38Portland
38h 02m
2 stops
LCY16:40London City
£700
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 16 settembre 2025.
Use the filters below to find and compare flights from London to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

lun 6/10

10:15-18:46

2 stops16h 31m

Portland

lun 20/10

15:25-13:20

1 stop13h 55m

£502

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

lun 29/9

10:15-18:46

2 stops16h 31m

Portland

lun 20/10

15:25-13:20

1 stop13h 55m

£505

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

lun 13/10

15:40-17:55

1 stop34h 15m

Portland

lun 20/10

15:20-14:35

1 stop15h 15m

£520

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

lun 24/11

13:45-15:55

Nonstop10h 10m

Portland

lun 1/12

17:45-11:20

Nonstop9h 35m

£522

LondonPortland

LCY - PDX

LCYPDX

London City

dom 9/11

17:50-11:25

1 stop25h 35m

Portland

lun 24/11

13:25-09:30

1 stop12h 05m

£542

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

ven 6/3

13:45-15:55

Nonstop10h 10m

Portland

mar 10/3

14:16-11:40

1 stop14h 24m

£544

LondonPortland

LCY - PDX

LCYPDX

London City

lun 6/10

08:40-19:19

2 stops18h 39m

Portland

lun 20/10

13:15-09:30

1 stop12h 15m

£547

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

lun 20/10

21:25-17:55

1 stop28h 30m

Portland

sab 25/10

15:20-11:50

1 stop12h 30m

£560

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

mer 22/10

15:40-17:35

Nonstop9h 55m

Portland

dom 26/10

23:59-06:50

1 stop23h 51m

£597

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

ven 6/3

13:45-15:55

Nonstop10h 10m

Portland

ven 13/3

18:45-11:20

Nonstop9h 35m

£609

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Portland from

How to get the cheapest flight ticket from London to Portland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London and Portland?

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from London is in September. Flight prices, which tend to average around £550, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in September, then you should wait until March to fly from London, when ticket prices are also cheap, with an average price of £559.

What is the cheapest day to depart on your flight to Portland?

The cheapest day to depart on your flight to Portland is on a Wednesday when prices can be found for as low as £647. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Sunday, with ticket prices averaging around £783.

What is the cheapest time of day to depart on your flight to Portland?

Flying to Portland from London in the morning is the least expensive time of day to depart. momondo users have found prices as low as £605 when looking at flights departing in the morning. Try not to purchase tickets in the afternoon because they tend to be around £723. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London to Portland flight route?

Fly from London Heathrow to Portland for the best London - Portland flight prices

How far in advance should I book a flight to Portland?

You are more likely to see cheaper flights to Portland from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around £652 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from London for as low as £582 on momondo.

What cabin class options are available on London to Portland flights?

There are 3 cabin classes available to choose from on London to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Portland flights?

You could potentially save up to 18% on your flight if you consider stops on a London to Portland flight.

How have London to Portland flight prices changed over time?

As of September 2025, prices for London to Portland flights are approximately 18% more expensive when compared to flights at the same time last year.

When to book flights from London to Portland

Are you open to changing your travel dates? Check out the ideal times to fly from London to Portland according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Portland (LON to PDX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Portland

Best price found

£740

Fastest flight time

9h 55m

Direct flights

Every day

Airports in Portland

1 airport
The best one-way flight to Portland from London in the past 72 hours is £740. The best return flight deal from London to Portland found on momondo in the last 72 hours is £571.
The fastest flight from London to Portland takes 9h 55m
Direct flights go from London to Portland every day.
There is 1 airport near Portland: Portland (PDX)
Search flight deals

  • How far is London to Portland by plane?

    The straight-line distance from London to Portland is 4909.8 mi. Flights usually cover this in 9h 55m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London to Portland Airport?

    Prices for flights from London to Portland Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from London to Portland Airport?

  • How old do you have to be to fly from London to Portland Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London to Portland?

  • What is the most popular airline from London to Portland?

Best airlines flying from London to Portland

Compare and see reviews for airlines that fly from London to Portland with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £432Free CancellationRating
7.0
544 reviews
Search Icelandair flights
Air CanadaPriceFrom £490Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
FinnairPriceFrom £495Free CancellationRating
7.6
1,323 reviews
Search Finnair flights
LufthansaPriceFrom £499Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
Virgin AtlanticPriceFrom £499Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £500Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
United AirlinesPriceFrom £507Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
KLMPriceFrom £546Free CancellationRating
7.8
1,385 reviews
Search KLM flights
American AirlinesPriceFrom £549Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom £565Free CancellationRating
7.0
2,924 reviews
Search Iberia flights

  • Finnair Flights From London to Portland

    Across 7 Finnair flights from London to Portland this week, the average price was £802, with the best Finnair deals starting from £672 round-trip. 1,323 users have rated Finnair on momondo, with an average score of 7.6/10.

  • American Airlines Flights From London to Portland

    £747 is the best American Airlines flight deal from London to Portland found on momondo over the last 72 hours. The average American Airlines ticket price found was closer to £1,042, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 10,000 user reviews) flies into Portland from London 7 times in an average week so prices can vary.

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Vancouver
Cannon Beach
Astoria
Seaside

Why use momondo?

Why should I use momondo to find a flight deal from London to Portland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Portland for you.

Can I find flights from London to Portland with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Portland flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Portland?

momondo provides multiple filters to help you find the best flight to Portland from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Portland right now. Can momondo alert me if prices change?

Price alerts on flights to Portland from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Portland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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