How many flights depart from Portland to London Heathrow Airport on average per day?

As of May 2026, 4 flights take off from Portland and land in London Heathrow Airport each day. The most common flight departure time for this route is 7:00PM, with 100% of daily flights taking off in the evening.

How many flights depart from Portland to London Heathrow Airport on average per week?

The number of flights available between Portland and London Heathrow Airport is 31 per week as of May 2026. The most frequent departure day is Mon, with 23% of weekly flights leaving on this day.

Which airport is the most popular layover for flights between Portland and London Heathrow Airport?

Reykjavik (KEF) was the most common stop: 82% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Portland to London Heathrow Airport?

Seattle (SEA) has the shortest average layover time for this route: 1h 48m.

Which layover airport has the shortest travel time from Portland to London Heathrow Airport?

Flights connecting via Seattle (SEA) have the shortest average one-way travel time: 12h 00m.

What airlines fly to London Heathrow Airport?

British Airways, Icelandair and American Airlines are the top three most popular airlines that fly to London Heathrow Airport from Portland according to our data. British Airways is the first choice among our users, with 68% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 13 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Portland to London Heathrow?

Virgin Atlantic and Delta are the most popular carriers operating from Portland to London Heathrow

Which layover airport offers the lowest fares from Portland to London Heathrow Airport?

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $1,074.

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?

The number of operators available for flights from Portland Airport to London Heathrow Airport is 13 as of May 2026.

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.

$304 Cheap Flights from Portland to London Heathrow Airport in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $1,153 to $785. The lowest price recently found on this route was $922.

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Find the cheapest flights from Portland to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:30 pm - 1:00 pm

PDX

LHR

9h 30mnonstop

1:05 pm - 5:55 pm

LHR

PDX

12h 50m

1 stop

$922Multiple Airlines

Sun, Sep 6 - Tue, Oct 6

1:30 pm - 6:20 am

PDX

LHR

32h 50m

1 stop

12:55 pm - 9:36 pm

LHR

PDX

16h 41m

1 stop

$923Iberia

Sat, Aug 8 - Tue, Aug 25

3:30 pm - 9:40 pm

PDX

LHR

22h 10m

2 stops

5:00 pm - 5:55 pm

LHR

PDX

32h 55m

2 stops

$924Multiple Airlines

Thu, Aug 20 - Sat, Aug 29

3:30 pm - 11:55 am

PDX

LHR

12h 25m

1 stop

1:05 pm - 5:55 pm

LHR

PDX

12h 50m

1 stop

$926Icelandair

Mon, Sep 21 - Sun, Oct 4

7:00 am - 6:45 am

PDX

LHR

15h 45m

1 stop

11:45 am - 11:10 am

LHR

PDX

31h 25m

1 stop

$927Delta

Wed, Aug 5 - Tue, Aug 11

11:07 pm - 6:25 am

PDX

LHR

23h 18m

1 stop

6:30 am - 11:10 am

LHR

PDX

12h 40m

1 stop

$928Delta

Sat, Aug 8 - Tue, Aug 18

2:08 pm - 1:15 pm

PDX

LHR

15h 07m

1 stop

6:30 am - 11:10 am

LHR

PDX

12h 40m

1 stop

$929KLM

Mon, Aug 17 - Mon, Aug 24

7:30 pm - 1:00 pm

PDX

LHR

9h 30mnonstop

7:30 am - 9:57 pm

LHR

PDX

21h 27m

2 stops

$931Iberia

Thu, Oct 22 - Thu, Oct 29

3:30 pm - 11:55 am

PDX

LHR

12h 25m

1 stop

8:35 pm - 6:00 pm

LHR

PDX

28h 25m

1 stop

$932Icelandair

Thu, Oct 22 - Thu, Oct 29

3:30 pm - 11:55 am

PDX

LHR

12h 25m

1 stop

8:35 pm - 6:00 pm

LHR

PDX

28h 25m

1 stop

$933Icelandair

Thu, Oct 22 - Thu, Oct 29

Iberia flights from Portland to London Heathrow Airport

Our best Iberia deals on Portland to London Heathrow Airport flight tickets

Iberia

Aug 8

PDX1:30 pmPortland

32h 50m

1 stop

LHR6:20 amLondon Heathrow

Aug 25

LHR12:55 pmLondon Heathrow

16h 41m

1 stop

PDX9:36 pmPortland

$923

Iberia

Oct 22

PDX7:30 pmPortland

9h 30m

LHR1:00 pmLondon Heathrow

Oct 29

LHR7:30 amLondon Heathrow

21h 27m

2 stops

PDX9:57 pmPortland

$931

Iberia

Oct 22

PDX6:35 amPortland

15h 45m

1 stop

LHR6:20 amLondon Heathrow

Oct 29

LHR6:15 amLondon Heathrow

22h 42m

2 stops

PDX9:57 pmPortland

$936

Delta flights from Portland to London Heathrow Airport

Our best Delta deals on Portland to London Heathrow Airport flight tickets

Delta

Aug 5

PDX7:00 amPortland

15h 45m

1 stop

LHR6:45 amLondon Heathrow

Aug 11

LHR11:45 amLondon Heathrow

31h 25m

1 stop

PDX11:10 amPortland

$927

Delta

Aug 8

PDX11:07 pmPortland

23h 18m

1 stop

LHR6:25 amLondon Heathrow

Aug 18

LHR6:30 amLondon Heathrow

12h 40m

1 stop

PDX11:10 amPortland

$928

Delta

Oct 15

PDX11:10 amPortland

15h 20m

2 stops

LHR10:30 amLondon Heathrow

Oct 22

LHR6:30 amLondon Heathrow

12h 40m

1 stop

PDX11:10 amPortland

$934

momondo Fare Finder

Use the filters below to find and compare flights from Portland to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 9/6

7:30 pm-1:00 pm

Nonstop9h 30m

London Heathrow

Tue 10/6

1:05 pm-5:55 pm

1 stop12h 50m

$922

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sat 8/8

1:30 pm-6:20 am

1 stop32h 50m

London Heathrow

Tue 8/25

12:55 pm-9:36 pm

1 stop16h 41m

$923

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 8/20

3:30 pm-9:40 pm

2 stops22h 10m

London Heathrow

Sat 8/29

5:00 pm-5:55 pm

2 stops32h 55m

$924

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 9/21

3:30 pm-11:55 am

1 stop12h 25m

London Heathrow

Sun 10/4

1:05 pm-5:55 pm

1 stop12h 50m

$926

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 8/5

7:00 am-6:45 am

1 stop15h 45m

London Heathrow

Tue 8/11

11:45 am-11:10 am

1 stop31h 25m

$927

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sat 8/8

11:07 pm-6:25 am

1 stop23h 18m

London Heathrow

Tue 8/18

6:30 am-11:10 am

1 stop12h 40m

$928

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 8/17

2:08 pm-1:15 pm

1 stop15h 07m

London Heathrow

Mon 8/24

6:30 am-11:10 am

1 stop12h 40m

$929

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 10/22

7:30 pm-1:00 pm

Nonstop9h 30m

London Heathrow

Thu 10/29

7:30 am-9:57 pm

2 stops21h 27m

$931

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 10/22

3:30 pm-11:55 am

1 stop12h 25m

London Heathrow

Thu 10/29

8:35 pm-6:00 pm

1 stop28h 25m

$932

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 10/22

3:30 pm-11:55 am

1 stop12h 25m

London Heathrow

Thu 10/29

8:35 pm-6:00 pm

1 stop28h 25m

$933

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

Other information

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 January is, on average, the cheapest month to fly to London Heathrow Airport from Portland, with most prices found around $687. If you’re not able to fly to London Heathrow Airport in January, then October is your next best option. Flight prices from Portland to London Heathrow Airport during October average around $689.

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

Our data shows that Monday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $848. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $1,012.

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 $734. 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 $935.

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 from Portland 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 $872 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 $745 on momondo.

Can stopping save me money on Portland to London Heathrow Airport flights?

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

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

As of May 2026, prices for Portland to London Heathrow Airport flights are approximately 3% more expensive 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	$434
Fastest flight time	9h 30m
Direct flights	Every day

The best one-way flight to London Heathrow Airport from Portland in the past 72 hours is $434. The best round-trip flight deal from Portland to London Heathrow Airport found on momondo in the last 72 hours is $1,009.

The fastest flight from Portland to London Heathrow Airport takes 9h 30m

Direct flights go from Portland to London Heathrow Airport every day.

Search flight deals

Frequently asked questions about flying from Portland to London Heathrow Airport

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 30m 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?
The number of operators available for flights from Portland Airport to London Heathrow Airport is 13 as of May 2026.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Portland to London Heathrow Airport is Boeing 787-10 Dreamliner (57.58% of total bookings). The next most popular plane models are Boeing 787-8 Dreamliner (34.59%), Boeing 787-9 Dreamliner (3.08%), and Boeing 787 Dreamliner (2.94%).
What is the most popular airline from Portland to London Heathrow Airport?
momondo data reveals that the most frequently booked airline on the route from Portland to London Heathrow Airport is British Airways, representing 54% of all bookings. The subsequent popular airlines are Icelandair at 10%, American Airlines at 10%, and United Airlines at 5%.

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
Icelandair	PriceFrom $492	Free Cancellation	Rating 7.0 653 reviews	Search Icelandair flights
Iberia	PriceFrom $525	Free Cancellation	Rating 7.0 3,214 reviews	Search Iberia flights
Delta	PriceFrom $552	Free Cancellation	Rating 7.9 8,454 reviews	Search Delta flights
Virgin Atlantic	PriceFrom $558	Free Cancellation	Rating 7.4 688 reviews	Search Virgin Atlantic flights
KLM	PriceFrom $561	Free Cancellation	Rating 7.8 1,513 reviews	Search KLM flights
British Airways	PriceFrom $575	Free Cancellation	Rating 6.7 7,964 reviews	Search British Airways flights
Alaska Airlines	PriceFrom $600	Free Cancellation	Rating 7.9 12,349 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $607	Free Cancellation	Rating 7.4 9,694 reviews	Search United Airlines flights
Air Canada	PriceFrom $630	Free Cancellation	Rating 7.1 11,012 reviews	Search Air Canada flights
Finnair	PriceFrom $664	Free Cancellation	Rating 7.6 1,393 reviews	Search Finnair flights

Alaska Airlines Flights From Portland to London Heathrow Airport
Across 4 Alaska Airlines flights from Portland to London Heathrow Airport this week, the average price was $1,101, with the best Alaska Airlines deals starting from $600 round-trip. 12,348 users have rated Alaska Airlines on momondo, with an average score of 7.9/10.
Finnair Flights From Portland to London Heathrow Airport
Across 1,393 Finnair reviews on momondo, the average score is 7.6/10. Finnair flies from Portland to London Heathrow Airport about 4 times each week, with ticket deals ranging from $664 to $977. Price data is based on momondo searches in the last 72 hours.

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Dover

Luton

Hayes

Stratford-upon-Avon

Crawley

Wembley

Slough

Stansted

Watford

Croydon

Brentwood

Dartford

Cobham

Folkestone

Romford

Harrow

Uxbridge

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.

An easier way to manage your London Heathrow Airport trip

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Flights to London Gatwick Airportfrom $437

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Flights to Belfast Intl Airportfrom $688

Flights to London Southend Airportfrom $641

Flights to Belfast City Airportfrom $688

Cheap flights from Portland to London from $322

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 9/14. 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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Iberia flights from Portland to London Heathrow Airport

Our best Iberia deals on Portland to London Heathrow Airport flight tickets

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Our best Delta deals on Portland to London Heathrow Airport flight tickets

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Use the filters below to find and compare flights from Portland to London Heathrow Airport that are best for you.

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

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?

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

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

What is the cheapest Portland to London Heathrow flight route?

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

Can stopping save me money on Portland to London Heathrow Airport flights?

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

What is the cheapest airline that flies from Portland to London Heathrow?

What airlines fly to London Heathrow Airport?

Which airport is the most popular layover for flights between Portland and London Heathrow Airport?

Which layover airport offers the lowest fares from Portland to London Heathrow Airport?

Which layover airport has the shortest travel time from Portland to London Heathrow Airport?

Which layover airport has the shortest connection time from Portland to London Heathrow Airport?

How many flights depart from Portland to London Heathrow Airport on average per day?

How many flights depart from Portland to London Heathrow Airport on average per week?

When to book flights from Portland to London Heathrow Airport

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

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Alaska Airlines Flights From Portland to London Heathrow Airport

Finnair Flights From Portland to London Heathrow Airport

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