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Cheap flights from London to Portland from $611

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 10/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London to Portland

Cheap round-trip flights

Air Canada Logo
10:15 am - 6:46 pmLHR-PDX
16h 31m2 stops
Air Canada Logo
3:25 pm - 1:20 pmPDX-LHR
13h 55m1 stop
$682Air Canada
Find Deal
Mon, Oct 6 - Mon, Oct 20
Air Canada Logo
10:15 am - 6:46 pmLHR-PDX
16h 31m2 stops
Air Canada Logo
3:25 pm - 1:20 pmPDX-LHR
13h 55m1 stop
$686Air Canada
Find Deal
Mon, Sep 29 - Mon, Oct 20
American Airlines Logo
11:20 am - 11:45 pmLGW-PDX
44h 25m2 stops
American Airlines Logo
10:59 pm - 7:30 amPDX-LGW
25h 31m2 stops
$692American Airlines
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Fri, Mar 6 - Tue, Mar 10
American Airlines Logo
12:30 pm - 12:50 amLGW-PDX
20h 20m2 stops
American Airlines Logo
11:59 pm - 7:30 amPDX-LGW
47h 31m2 stops
$699American Airlines
Find Deal
Thu, Nov 20 - Sat, Nov 29
Icelandair Logo
11:55 am - 5:00 pmLGW-PDX
13h 05m1 stop
Icelandair Logo
2:45 pm - 10:55 amPDX-LGW
12h 10m1 stop
$703Icelandair
Find Deal
Wed, Nov 19 - Thu, Nov 27
British Airways Logo
1:45 pm - 3:55 pmLHR-PDX
10h 10mnonstop
British Airways Logo
5:45 pm - 11:20 amPDX-LHR
9h 35mnonstop
$710British Airways
Find Deal
Mon, Nov 24 - Mon, Dec 1
Multiple Airlines Logo
1:45 pm - 3:55 pmLHR-PDX
10h 10mnonstop
Multiple Airlines Logo
5:45 pm - 11:20 amPDX-LHR
9h 35mnonstop
$711Multiple Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 17
Multiple Airlines Logo
6:30 am - 6:30 pmLHR-PDX
19h 00m2 stops
Multiple Airlines Logo
9:50 am - 11:20 amPDX-LHR
18h 30m2 stops
$713Multiple Airlines
Find Deal
Thu, Mar 12 - Thu, Mar 19
British Airways Logo
1:45 pm - 3:55 pmLHR-PDX
10h 10mnonstop
British Airways Logo
2:16 pm - 11:40 amPDX-LHR
14h 24m1 stop
$739British Airways
Find Deal
Fri, Mar 6 - Tue, Mar 10
Icelandair Logo
9:25 pm - 5:55 pmLHR-PDX
28h 30m1 stop
Icelandair Logo
3:20 pm - 11:50 amPDX-LHR
12h 30m1 stop
$761Icelandair
Find Deal
Mon, Oct 20 - Sat, Oct 25

Air Canada flights from London to Portland

Our best Air Canada deals on London to Portland flight tickets
Air Canada
Oct 6
LHR10:15 amLondon Heathrow
16h 31m
2 stops
PDX6:46 pmPortland
Oct 20
PDX3:25 pmPortland
13h 55m
1 stop
LHR1:20 pmLondon Heathrow
$682
Find similar
Air Canada
Sep 29
LHR10:15 amLondon Heathrow
16h 31m
2 stops
PDX6:46 pmPortland
Oct 20
PDX3:25 pmPortland
13h 55m
1 stop
LHR1:20 pmLondon Heathrow
$686
Find similar
Air Canada
Oct 6
LHR10:15 amLondon Heathrow
20h 46m
2 stops
PDX11:01 pmPortland
Oct 20
PDX9:55 amPortland
17h 55m
2 stops
LHR11:50 amLondon Heathrow
$688
Find similar

American Airlines flights from London to Portland

Our best American Airlines deals on London to Portland flight tickets
American Airlines
Mar 6
LGW11:20 amLondon Gatwick
44h 25m
2 stops
PDX11:45 pmPortland
Mar 10
PDX10:59 pmPortland
25h 31m
2 stops
LGW7:30 amLondon Gatwick
$692
Find similar
American Airlines
Nov 20
LGW12:30 pmLondon Gatwick
20h 20m
2 stops
PDX12:50 amPortland
Nov 29
PDX11:59 pmPortland
47h 31m
2 stops
LGW7:30 amLondon Gatwick
$699
Find similar
American Airlines
Oct 6
LHR3:40 pmLondon Heathrow
9h 55m
PDX5:35 pmPortland
Oct 20
PDX7:25 pmPortland
9h 35m
LHR1:00 pmLondon Heathrow
$712
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated September 16, 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

Mon 10/6

10:15 am-6:46 pm

2 stops16h 31m

Portland

Mon 10/20

3:25 pm-1:20 pm

1 stop13h 55m

$682

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 9/29

10:15 am-6:46 pm

2 stops16h 31m

Portland

Mon 10/20

3:25 pm-1:20 pm

1 stop13h 55m

$686

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Fri 3/6

11:20 am-11:45 pm

2 stops44h 25m

Portland

Tue 3/10

10:59 pm-7:30 am

2 stops25h 31m

$692

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Thu 11/20

12:30 pm-12:50 am

2 stops20h 20m

Portland

Sat 11/29

11:59 pm-7:30 am

2 stops47h 31m

$699

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Wed 11/19

11:55 am-5:00 pm

1 stop13h 05m

Portland

Thu 11/27

2:45 pm-10:55 am

1 stop12h 10m

$703

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 11/24

1:45 pm-3:55 pm

Nonstop10h 10m

Portland

Mon 12/1

5:45 pm-11:20 am

Nonstop9h 35m

$710

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 11/3

1:45 pm-3:55 pm

Nonstop10h 10m

Portland

Mon 11/17

5:45 pm-11:20 am

Nonstop9h 35m

$711

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 3/12

6:30 am-6:30 pm

2 stops19h 00m

Portland

Thu 3/19

9:50 am-11:20 am

2 stops18h 30m

$713

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 3/6

1:45 pm-3:55 pm

Nonstop10h 10m

Portland

Tue 3/10

2:16 pm-11:40 am

1 stop14h 24m

$739

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 10/20

9:25 pm-5:55 pm

1 stop28h 30m

Portland

Sat 10/25

3:20 pm-11:50 am

1 stop12h 30m

$761

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $747, 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 $760.

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 Monday when prices can be found for as low as $879. 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 $1,278.

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

The cheapest time of day to fly to Portland is in the afternoon when flights can be purchased for as low as $939. In the morning is when there is more demand to fly to Portland, so prices are often more expensive at around $1,188 per ticket.

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 $886 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from London for as low as $791 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?

No. A direct flight is the cheapest option for a flight between London to Portland.

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 round-trip 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

Fastest flight time

9h 55m

Direct flights

Every day

Airports in Portland

1 airport
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 distance between London and Portland is about 4909.8 mi. Typically, this will take 9h 55m by plane in normal conditions.

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

    Prices for flights from London to Portland Airport are updated daily.

  • 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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
United AirlinesPriceFrom $701Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
British AirwaysPriceFrom $733Free CancellationRating
6.7
7,363 reviews
Search British Airways flights
American AirlinesPriceFrom $782Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • American Airlines Flights From London to Portland

    American Airlines is one of the most popular airlines flying from London to Portland, operating 7 flights/week on average for this route. A good American Airlines flight deal for London to Portland starts from $782 round-trip, up to an average price of $953. Our users have rated American Airlines at 7.2/10.

  • British Airways Flights From London to Portland

    Across 7,363 British Airways reviews on momondo, the average score is 6.7/10. British Airways flies from London to Portland about 7 times each week, with ticket deals ranging from $733 to $915. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Lincoln City
Seaside
Cannon Beach
Vancouver
Salem
Astoria
Long Beach
Depoe Bay
Rockaway Beach
Beaverton
Hillsboro
Hood River
Gresham
McMinnville
Longview
Tigard
The Dalles
Pacific City
Tillamook
Manzanita

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portland from London.

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

All flight searches from London to Portland on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Portland.

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

If you are not ready to book a flight from London to Portland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portland and let you know when they change.

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