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Cheap flights from Portland to London from $205

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to London 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.
1 adult
0 bags

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Cheap round-trip flights

Icelandair Logo
2:45 pm - 7:30 pmPDX-LHR
20h 45m1 stop
Icelandair Logo
12:15 pm - 5:00 pmLHR-PDX
12h 45m1 stop
$482Icelandair
Find Deal
Thu, Nov 13 - Sun, Nov 23
Icelandair Logo
2:45 pm - 10:50 amPDX-LHR
12h 05m1 stop
Icelandair Logo
12:15 pm - 5:00 pmLHR-PDX
12h 45m1 stop
$484Icelandair
Find Deal
Thu, Nov 6 - Mon, Nov 10
Icelandair Logo
2:45 pm - 10:50 amPDX-LHR
12h 05m1 stop
Icelandair Logo
12:15 pm - 5:00 pmLHR-PDX
12h 45m1 stop
$500Icelandair
Find Deal
Sat, Nov 15 - Wed, Nov 19
Icelandair Logo
2:45 pm - 10:50 amPDX-LHR
12h 05m1 stop
Icelandair Logo
8:35 pm - 5:00 pmLHR-PDX
28h 25m1 stop
$501Icelandair
Find Deal
Sat, Nov 15 - Sat, Nov 22
American Airlines Logo
3:22 pm - 12:50 pmPDX-LHR
13h 28m1 stop
American Airlines Logo
8:50 am - 8:47 pmLHR-PDX
19h 57m2 stops
$524American Airlines
Find Deal
Wed, Aug 20 - Wed, Aug 27
British Airways Logo
10:23 am - 7:20 amPDX-LHR
12h 57m1 stop
British Airways Logo
3:40 pm - 5:35 pmLHR-PDX
9h 55mnonstop
$531British Airways
Find Deal
Mon, Aug 18 - Wed, Aug 27
British Airways Logo
2:05 pm - 12:45 pmPDX-LHR
14h 40m1 stop
British Airways Logo
3:40 pm - 5:35 pmLHR-PDX
9h 55mnonstop
$545British Airways
Find Deal
Wed, Aug 20 - Wed, Aug 27
Delta Logo
7:19 am - 9:15 amPDX-LHR
17h 56m1 stop
Delta Logo
6:30 am - 11:05 amLHR-PDX
12h 35m1 stop
$547Delta
Find Deal
Tue, Aug 12 - Fri, Aug 22
Delta Logo
11:14 am - 11:20 amPDX-LHR
16h 06m1 stop
Delta Logo
6:15 am - 4:10 pmLHR-PDX
17h 55m2 stops
$555Delta
Find Deal
Mon, Aug 18 - Wed, Aug 27
Iberia Logo
2:05 pm - 6:25 amPDX-LHR
32h 20m1 stop
Iberia Logo
8:00 pm - 9:17 pmLHR-PDX
33h 17m2 stops
$560Iberia
Find Deal
Sat, Aug 16 - Wed, Aug 27

Icelandair flights from Portland to London Heathrow Airport

Our best Icelandair deals on Portland to London Heathrow Airport flight tickets
Icelandair
Nov 13
PDX2:45 pmPortland
20h 45m
1 stop
LHR7:30 pmLondon Heathrow
Nov 23
LHR12:15 pmLondon Heathrow
12h 45m
1 stop
PDX5:00 pmPortland
Icelandair
Nov 6
PDX2:45 pmPortland
12h 05m
1 stop
LHR10:50 amLondon Heathrow
Nov 10
LHR12:15 pmLondon Heathrow
12h 45m
1 stop
PDX5:00 pmPortland
Icelandair
Nov 15
PDX2:45 pmPortland
12h 05m
1 stop
LHR10:50 amLondon Heathrow
Nov 19
LHR12:15 pmLondon Heathrow
12h 45m
1 stop
PDX5:00 pmPortland

Iberia flights from Portland to London Heathrow Airport

Our best Iberia deals on Portland to London Heathrow Airport flight tickets
Iberia
Aug 16
PDX2:05 pmPortland
32h 20m
1 stop
LHR6:25 amLondon Heathrow
Aug 27
LHR8:00 pmLondon Heathrow
33h 17m
2 stops
PDX9:17 pmPortland
Iberia
Jul 16
PDX5:30 amPortland
16h 55m
1 stop
LHR6:25 amLondon Heathrow
Aug 21
LHR3:10 pmLondon Heathrow
15h 57m
1 stop
PDX11:07 pmPortland
Iberia
Jul 16
PDX7:45 amPortland
17h 15m
1 stop
LHR9:00 amLondon Heathrow
Aug 23
LHR3:10 pmLondon Heathrow
15h 49m
1 stop
PDX10:59 pmPortland

See travel insights to London from

How to get the cheapest flight ticket from Portland to London Heathrow Airport

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 cheapest month to fly to London Heathrow Airport?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Portland, with most prices found around $685. If you’re not able to fly to London Heathrow Airport in October, then April is your next best option. Flight prices from Portland to London Heathrow Airport during April average around $691.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $847. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $1,071.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Portland to London Heathrow Airport in the afternoon for as low as $793. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $951.

What is the cheapest Portland to London Heathrow flight route?

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

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $847 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Portland for as low as $756 on momondo.

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

There are 4 cabin classes available to choose from on Portland to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Portland to London Heathrow Airport flight prices changed over time?

As of July 2025, prices for Portland to London Heathrow Airport flights are approximately 50% cheaper when compared to flights at the same time last year.

When to book flights from Portland to London Heathrow Airport

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

Cheap Portland to London Heathrow Airport (PDX to LHR) flight deals and tips

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

Best Price Found

$205

Fastest flight time

12h 05m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Portland in the past 72 hours is $205. The best round-trip flight deal from Portland to London Heathrow Airport found on momondo in the last 72 hours is $482.
The fastest flight from Portland to London Heathrow Airport takes 12h 05m
Direct flights go from Portland to London Heathrow Airport every day.

  • How far is Portland to London Heathrow by plane?

    Portland and London Heathrow are 4902.4 mi apart from one another. Typically, this will take 12h 05m by plane in normal conditions.

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

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

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

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

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

    The travel and health documents you'll need for your trip to London Heathrow 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 London Heathrow 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 Portland to London Heathrow Airport?

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


Best airlines flying from Portland to London Heathrow Airport

Compare and see reviews for airlines that fly from Portland to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $491Free CancellationRating
7.0
514 reviews
Search Icelandair flights
Air CanadaPriceFrom $580Free CancellationRating
7.1
9,681 reviews
Search Air Canada flights
IberiaPriceFrom $585Free CancellationRating
7.0
2,820 reviews
Search Iberia flights
DeltaPriceFrom $602Free CancellationRating
8.0
7,982 reviews
Search Delta flights
British AirwaysPriceFrom $616Free CancellationRating
6.6
7,093 reviews
Search British Airways flights
American AirlinesPriceFrom $617Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
FinnairPriceFrom $620Free CancellationRating
7.6
1,306 reviews
Search Finnair flights
Virgin AtlanticPriceFrom $621Free CancellationRating
7.4
654 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom $645Free CancellationRating
7.4
8,861 reviews
Search United Airlines flights
LufthansaPriceFrom $709Free CancellationRating
6.8
7,207 reviews
Search Lufthansa flights
  • Alaska Airlines Flights From Portland to London Heathrow Airport

    Across 7 Alaska Airlines flights from Portland to London Heathrow Airport this week, the average price was $1,085, with the best Alaska Airlines deals starting from $870 round-trip. 10,000 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

  • Finnair Flights From Portland to London Heathrow Airport

    Across 1,306 Finnair reviews on momondo, the average score is 7.6/10. Finnair flies from Portland to London Heathrow Airport about 7 times each week, with ticket deals ranging from $620 to $798. Price data is based on momondo searches in the last 72 hours.


Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
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Slough
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Ilford
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Richmond

Why use momondo?

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

Finding the right flight to London from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to London from Portland with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Portland.

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

Of course. momondo tracks the price of Portland to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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1 adult
Tue 7/8
Tue 7/15

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