Cheap flights from Portland to London from £146
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 1/10. 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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Air Canada flights from Portland to London Heathrow Airport
Our best Air Canada deals on Portland to London Heathrow Airport flight tickets
Lufthansa flights from Portland to London Heathrow Airport
Our best Lufthansa deals on Portland to London Heathrow Airport flight tickets
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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?
In general, October 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 £503. The month of April is another great option to travel to London Heathrow Airport, with average flight prices from Portland averaging around £509.
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 Friday. momondo users have found tickets for Friday departures for as low as £472. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £773.
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 £526. 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 at midday when prices are £696 on average. Flights to London Heathrow Airport from Portland at midday 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 to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from Portland when booking 19 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £624 when searching 19 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 £556 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.
What is the cheapest airline that flies from Portland to London Heathrow?
Icelandair, Air Canada, and Lufthansa are the most popular carriers operating from Portland to London Heathrow
Which airlines fly to London Heathrow Airport?
British Airways, Iberia and Virgin Atlantic 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 44% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 4 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Portland to London Heathrow Airport on average per day?
As of June 2025, 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 June 2025, 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
How far is Portland to London Heathrow by plane?
Portland and London Heathrow are 4902.4 mi apart from one another. 9h 35m 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 4 as of June 2025.
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 76.26% of the total bookings. Other popular models include Boeing 787-8 Dreamliner with 12.40%, Boeing 787-9 Dreamliner with 5.97%, and Boeing 787 Dreamliner with 1.09%.
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 (44% of total bookings). The next most popular airlines are Iberia (21%), Virgin Atlantic (20%), and Icelandair (15%).
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 £426 | Free Cancellation | Rating 7.4 652 reviews | |||
| PriceFrom £432 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom £448 | Free Cancellation | Rating 7.0 2,776 reviews | |||
| PriceFrom £461 | Free Cancellation | Rating 6.6 7,008 reviews |
Iberia Flights From Portland to London Heathrow Airport
Iberia 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 £743, but momondo users have found Iberia deals from Portland to London Heathrow Airport from as low as £609 round-trip. Iberia has been scored 7.0/10 in 2,776 reviews.
British Airways Flights From Portland to London Heathrow Airport
British Airways is also a popular choice for this route. British Airways flight deals for Portland to London Heathrow Airport start from as low as £627 round-trip, depending on your selected dates, with average British Airways deals seen on momondo around £746. British Airways operates 7 flights to London Heathrow Airport from Portland in an average week. Users have rated it 6.6/10 across 7,008 reviews.
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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.