Cheap flights from Portland to London from £245
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 6/1. 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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Our best Lufthansa deals on Portland to London Heathrow Airport flight tickets
Icelandair flights from Portland to London Heathrow Airport
Our best Icelandair deals on Portland to London Heathrow Airport flight tickets
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Fly from
Fly to
Route
Depart
Return
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Thu 3/12
14:45-21:40
2 stops22h 55m
London Heathrow
Sun 13/12
06:40-17:00
2 stops18h 20m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 19/10
15:30-21:35
2 stops22h 05m
London Heathrow
Wed 28/10
07:05-18:00
2 stops17h 55m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 2/11
14:45-09:35
3 stops34h 50m
London Heathrow
Mon 9/11
06:40-17:00
2 stops18h 20m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 1/3
19:10-11:50
1 stop32h 40m
London Heathrow
Thu 4/3
06:35-18:30
2 stops19h 55m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Thu 5/11
07:00-21:40
3 stops30h 40m
London Heathrow
Wed 11/11
18:40-20:46
3 stops34h 06m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 1/3
10:00-11:50
1 stop17h 50m
London Heathrow
Wed 3/3
09:00-20:33
2 stops19h 33m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 1/3
07:00-09:20
2 stops18h 20m
London Heathrow
Wed 3/3
09:00-20:33
2 stops19h 33m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Tue 3/11
14:45-21:40
2 stops22h 55m
London Heathrow
Tue 10/11
18:05-17:00
3 stops30h 55m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Wed 10/2
17:45-11:20
Nonstop9h 35m
London Heathrow
Wed 24/2
13:35-15:50
Nonstop10h 15m
PortlandLondon
PDX Portland - LHR London Heathrow
PDXLHR
Portland
Mon 1/3
17:45-11:20
Nonstop9h 35m
London Heathrow
Wed 10/3
13:35-15:50
Nonstop10h 15m
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?
Prices are currently low for flights on this route.
Typical prices usually range from £583 to £982.The lowest price recently found on this route was £564.
What is the cheapest month to fly to London Heathrow Airport?
In general, February is the cheapest month to fly from Portland to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £531. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Portland averaging around £572.
What is the cheapest day to depart on your flight to London Heathrow Airport?
On average, the least expensive day to fly to London Heathrow Airport from Portland is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £784. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Wednesday is £875.
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 evening. momondo users have found flights departing from Portland to London Heathrow Airport in the evening for as low as £841. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £907 on average. Flights to London Heathrow Airport from Portland in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.
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 £742 when searching weeks before you fly. 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 £670 on momondo.
What cabin class options are available on Portland to London Heathrow Airport flights?
There are 2 cabin classes available to choose from on Portland to London Heathrow Airport 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 Portland to London Heathrow Airport flights?
You could potentially save up to 28% on your flight if you consider stops on a Portland to London Heathrow Airport flight.
How have Portland to London Heathrow Airport flight prices changed over time?
As of October 2026, prices for Portland to London Heathrow Airport flights are approximately 33% cheaper when compared to flights at the same time last year.
How many flights depart from Portland to London Heathrow Airport on average per day?
As of October 2026, 7 flights take off from Portland and land in London Heathrow Airport each day. The most common flight departure time for this route is 19:00, with 100% of daily flights taking off in the evening.
How many flights depart from Portland to London Heathrow Airport on average per week?
As of October 2026, 49 flights take off from Portland and land in London Heathrow Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.
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
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. 9h 30m is a normal flight duration for this route.
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 refresh daily.
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 1 as of October 2026.
How old do you have to be to fly from Portland Airport to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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 flights between Portland and London Heathrow Airport, the leading plane model is Boeing 787-10 Dreamliner, making up 54.27% of the total bookings. Other popular models include Boeing 787-8 Dreamliner with 36.21%, Boeing 787-9 Dreamliner with 4.31%, and Boeing 787 Dreamliner with 3.32%.
What is the most popular airline from Portland to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to London Heathrow Airport is British Airways (100% of total bookings).
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 | ||
|---|---|---|---|---|---|
| PriceFrom £466 | Free Cancellation | Rating 6.7 8,256 reviews |
British Airways Flights From Portland to London Heathrow Airport
British Airways operates around 7 flights from Portland to London Heathrow Airport every week. The average price of these flights found in the last 72 hours has been £841, but momondo users have found British Airways deals from Portland to London Heathrow Airport from as low as £466 round-trip. British Airways has been scored 6.7/10 in 8,256 reviews.
Travelling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Portland to London?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to London . Millions of users trust and use momondo every year so you are in good hands.
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 all potential Portland to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
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.