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Cheap flights from Portland to London Heathrow Airport from $236

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 Heathrow Airport departing on 2/16. 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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Find the cheapest flights from Portland to London

Cheap round-trip flights

These are some of the best round-trip flight deals from Portland to London that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Portland to London.

Cheap last minute flights

Planning a quick getaway from Portland to London? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to London, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Portland to London

Find recent round-trip train or bus tickets from Portland to London.

All round-trip flight deals from Portland to London

The cheapest plane tickets from Portland to London found on KAYAK recently.
3:20 pm - 8:20 pmPDX-LHR
21h 00m1 stop
1:05 pm - 5:55 pmLHR-PDX
12h 50m1 stop
$502Icelandair
Find Deal
lun., may. 5 - jue., may. 15
3:20 pm - 8:20 pmPDX-LHR
21h 00m1 stop
9:25 pm - 5:55 pmLHR-PDX
28h 30m1 stop
$503Icelandair
Find Deal
lun., may. 5 - lun., may. 12
7:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
2:20 pm - 5:35 pmLHR-PDX
10h 15mnonstop
$598Iberia
Find Deal
mar., mar. 11 - mié., mar. 19
7:25 pm - 1:00 pmPDX-LHR
9h 35mnonstop
3:40 pm - 5:35 pmLHR-PDX
9h 55mnonstop
$601Iberia
Find Deal
mar., abr. 8 - mié., abr. 16
7:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
2:20 pm - 5:35 pmLHR-PDX
10h 15mnonstop
$629British Airways
Find Deal
dom., mar. 9 - mar., mar. 18
6:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
2:20 pm - 4:35 pmLHR-PDX
10h 15mnonstop
$641British Airways
Find Deal
mié., feb. 12 - mar., feb. 18
12:59 am - 7:05 amPDX-LHR
23h 06m1 stop
6:30 am - 11:20 amLHR-PDX
12h 50m1 stop
$655Delta
Find Deal
sáb., mar. 22 - mié., abr. 2
12:45 pm - 11:40 amPDX-LHR
14h 55m1 stop
8:40 am - 8:42 pmLHR-PDX
20h 02m2 stops
$656Delta
Find Deal
mié., feb. 12 - mar., feb. 18
5:31 am - 6:50 amPDX-LHR
17h 19m2 stops
8:40 am - 9:44 pmLHR-PDX
21h 04m2 stops
$660American Airlines
Find Deal
dom., feb. 16 - mar., mar. 4
7:35 am - 7:20 amPDX-LHR
15h 45m1 stop
2:20 pm - 4:35 pmLHR-PDX
10h 15mnonstop
$689American Airlines
Find Deal
dom., feb. 16 - mar., mar. 4
10:16 am - 12:50 pmPDX-LHR
42h 34m2 stops
dom., feb. 16
5:30 pm - 12:50 pmPDX-LHR
59h 20m2 stops
sáb., feb. 8
7:25 pm - 1:00 pmPDX-LHR
9h 35mnonstop
$402Iberia
Find Deal
dom., mar. 30
5:31 am - 9:00 amPDX-LHR
19h 29m1 stop
$407Iberia
Find Deal
dom., mar. 30
6:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
$418American Airlines
Find Deal
mar., feb. 11
5:45 pm - 8:10 pmPDX-LHR
18h 25m2 stops
$429Delta
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sáb., feb. 1
6:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
$432British Airways
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dom., feb. 16
12:59 am - 12:15 pmPDX-LHR
27h 16m1 stop
$434Delta
Find Deal
sáb., mar. 29
7:25 pm - 1:00 pmPDX-LHR
9h 35mnonstop
$442British Airways
Find Deal
mié., abr. 30
7:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
$448American Airlines
Find Deal
dom., mar. 16
9:45 am - 6:30 pmPDX-LHR
24h 45m2 stops
6:40 am - 8:12 pmLHR-PDX
21h 32m2 stops
$754Scandinavian Airlines
Find Deal
mié., ene. 22 - mar., ene. 28
1:00 pm - 6:30 pmPDX-LHR
21h 30m2 stops
6:40 am - 10:27 pmLHR-PDX
23h 47m2 stops
mié., ene. 22 - mar., ene. 28
1:30 pm - 10:00 amPDX-LHR
12h 30m1 stop
6:30 am - 11:25 amLHR-PDX
12h 55m1 stop
$786Delta
Find Deal
mié., ene. 22 - vie., ene. 31
7:05 pm - 10:10 amPDX-LHR
31h 05m1 stop
3:00 pm - 11:53 amLHR-PDX
28h 53m2 stops
$832United Airlines
Find Deal
vie., ene. 24 - mar., feb. 4
12:45 am - 7:05 amPDX-LHR
22h 20m1 stop
6:30 am - 11:25 amLHR-PDX
12h 55m1 stop
$837Delta
Find Deal
jue., ene. 23 - mar., feb. 4
3:25 pm - 9:40 amPDX-LHR
34h 15m1 stop
1:00 pm - 9:34 amLHR-PDX
28h 34m1 stop
$838United Airlines
Find Deal
dom., ene. 26 - lun., feb. 3
6:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
9:25 am - 5:53 pmLHR-PDX
16h 28m1 stop
$848British Airways
Find Deal
vie., ene. 24 - mar., feb. 4
6:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
10:40 am - 9:50 pmLHR-PDX
19h 10m1 stop
$891British Airways
Find Deal
vie., ene. 24 - mar., feb. 4
7:35 am - 7:20 amPDX-LHR
15h 45m1 stop
9:25 am - 9:50 pmLHR-PDX
20h 25m1 stop
$2,460Iberia
Find Deal
jue., ene. 23 - mié., ene. 29
6:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
9:25 am - 9:50 pmLHR-PDX
20h 25m1 stop
$2,880Iberia
Find Deal
dom., ene. 26 - lun., feb. 3
7:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
2:20 pm - 5:35 pmLHR-PDX
10h 15mnonstop
$598Iberia
Find Deal
mar., mar. 11 - mié., mar. 19
7:25 pm - 1:00 pmPDX-LHR
9h 35mnonstop
3:40 pm - 5:35 pmLHR-PDX
9h 55mnonstop
$601Iberia
Find Deal
mar., abr. 8 - mié., abr. 16
6:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
2:20 pm - 4:35 pmLHR-PDX
10h 15mnonstop
$611Iberia
Find Deal
mié., feb. 19 - mié., feb. 26
7:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
2:20 pm - 5:35 pmLHR-PDX
10h 15mnonstop
$629British Airways
Find Deal
dom., mar. 9 - mar., mar. 18
7:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
3:40 pm - 5:35 pmLHR-PDX
9h 55mnonstop
$631British Airways
Find Deal
mar., mar. 18 - mar., abr. 15
7:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
2:20 pm - 5:35 pmLHR-PDX
10h 15mnonstop
$643Finnair
Find Deal
mar., mar. 11 - mar., mar. 18
6:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
2:20 pm - 4:35 pmLHR-PDX
10h 15mnonstop
$644Finnair
Find Deal
dom., feb. 16 - mar., mar. 4
6:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
2:20 pm - 5:35 pmLHR-PDX
10h 15mnonstop
$705American Airlines
Find Deal
vie., mar. 7 - mar., mar. 11
7:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
2:20 pm - 5:35 pmLHR-PDX
10h 15mnonstop
$720American Airlines
Find Deal
mar., mar. 11 - mar., mar. 25
6:30 pm - 12:10 pmPDX-LHR
9h 40mnonstop
2:20 pm - 5:35 pmLHR-PDX
10h 15mnonstop
$969Alaska Airlines
Find Deal
vie., mar. 7 - vie., mar. 14

Finnair flights from Portland to London Heathrow Airport

Our best Finnair deals on Portland to London Heathrow Airport flight tickets
Finnair
Mar 11
PDX7:30 pmPortland
9h 40m
LHR12:10 pmLondon Heathrow
Mar 18
LHR2:20 pmLondon Heathrow
10h 15m
PDX5:35 pmPortland
Finnair
Feb 16
PDX6:30 pmPortland
9h 40m
LHR12:10 pmLondon Heathrow
Mar 4
LHR2:20 pmLondon Heathrow
10h 15m
PDX4:35 pmPortland
Finnair
Feb 16
PDX6:30 pmPortland
9h 40m
LHR12:10 pmLondon Heathrow
Mar 4
LHR2:20 pmLondon Heathrow
10h 15m
PDX4:35 pmPortland

Delta flights from Portland to London Heathrow Airport

Our best Delta deals on Portland to London Heathrow Airport flight tickets
Delta
Mar 22
PDX12:59 amPortland
23h 06m
1 stop
LHR7:05 amLondon Heathrow
Apr 2
LHR6:30 amLondon Heathrow
12h 50m
1 stop
PDX11:20 amPortland
Delta
Feb 4
PDX12:45 pmPortland
14h 55m
1 stop
LHR11:40 amLondon Heathrow
Feb 11
LHR6:30 amLondon Heathrow
20h 24m
2 stops
PDX6:54 pmPortland
Delta
Mar 3
PDX12:59 amPortland
22h 06m
1 stop
LHR7:05 amLondon Heathrow
Mar 12
LHR6:30 amLondon Heathrow
18h 02m
2 stops
PDX5:32 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 typical price of a round-trip flight between Portland and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

The month of November is, on average, the cheapest month to fly to London Heathrow Airport from Portland, with most prices found around $722. If you’re not able to fly to London Heathrow Airport in November, then October is your next best option. Flight prices from Portland to London Heathrow Airport during October average around $740.

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 $882. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $1,105.

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 $781. 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 $1,004.

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 16 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $893 when searching 16 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 $857 on momondo.

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

There are 3 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 January 2025, prices for Portland to London Heathrow Airport flights are approximately 28% 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

$236

Fastest flight time

9h 35m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Portland in the past 72 hours is $236. The best round-trip flight deal from Portland to London Heathrow Airport found on momondo in the last 72 hours is $502.
The fastest flight from Portland to London Heathrow Airport takes 9h 35m
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 9h 35m 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 $498Free CancellationRating
7.1
502 reviews
Search Icelandair flights
KLMPriceFrom $574Free CancellationRating
7.8
1,341 reviews
Search KLM flights
LufthansaPriceFrom $592Free CancellationRating
6.7
7,111 reviews
Search Lufthansa flights
FinnairPriceFrom $597Free CancellationRating
7.6
1,286 reviews
Search Finnair flights
IberiaPriceFrom $598Free CancellationRating
7.0
2,646 reviews
Search Iberia flights
DeltaPriceFrom $602Free CancellationRating
8.0
8,521 reviews
Search Delta flights
Air CanadaPriceFrom $613Free CancellationRating
7.0
8,633 reviews
Search Air Canada flights
United AirlinesPriceFrom $624Free CancellationRating
7.4
8,984 reviews
Search United Airlines flights
American AirlinesPriceFrom $628Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $644Free CancellationRating
6.6
6,834 reviews
Search British Airways flights
  • Alaska Airlines Flights From Portland to London Heathrow Airport

    Across 3 Alaska Airlines flights from Portland to London Heathrow Airport this week, the average price was $1,045, with the best Alaska Airlines deals starting from $868 round-trip. 9,706 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

  • Finnair Flights From Portland to London Heathrow Airport

    Across 1,286 Finnair reviews on momondo, the average score is 7.6/10. Finnair flies from Portland to London Heathrow Airport about 3 times each week, with ticket deals ranging from $597 to $788. Price data is based on momondo searches in the last 72 hours.


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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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