Cheap flights from Portland Oregon to London Heathrow

Q: What are the cheapest airlines?

Icelandair. These airlines usually offer the cheapest flights from Portland Oregon to London Heathrow.

Q: Can I fly direct to London Heathrow?

British Airways, Finnair, Iberia Airlines, Aer Lingus, Alaska Airlines. You can fly non-stop from Portland Oregon to London Heathrow with these airlines.

Q: What airlines fly indirectly?

Lufthansa, Virgin Atlantic, KLM, Icelandair, Air Canada. These airlines fly from Portland Oregon to London Heathrow, but you’ll have at least one layover.

Q: How long is the flight?

9 hrs 35 mins. This is the shortest flight time from Portland Oregon to London Heathrow.

from as little as £605

15 nights in London, departing Portland Oregon on 22 / Jul / 2025 with British Airways (price found 11 hours ago)

Subject to availability, prices correct of the last 24 hours

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Cheap return flights from Portland Oregon to London Heathrow

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The Portland Oregon / London Heathrow route

All 7891 km of it

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London Heathrow flight facts

What you need to know

What are the cheapest airlines?

Icelandair

These airlines usually offer the cheapest flights from Portland Oregon to London Heathrow.

Can I fly direct to London Heathrow?

British Airways
Finnair
Iberia Airlines
Aer Lingus
Alaska Airlines

You can fly non-stop from Portland Oregon to London Heathrow with these airlines.

What airlines fly indirectly?

Lufthansa
Virgin Atlantic
KLM
Icelandair
Air Canada

These airlines fly from Portland Oregon to London Heathrow, but you’ll have at least one layover.

How long is the flight?

9 hrs 35 mins

This is the shortest flight time from Portland Oregon to London Heathrow.

Alternative flights from the UK to London Heathrow

Check out prices for other routes

Portland Oregon to London City Airport

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Portland Oregon to London Gatwick

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Alternative flights from Portland Oregon to London Heathrow

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22 / Jul / 2025 is currently the lowest priced day of the year to fly the Portland Oregon/London Heathrow route. There are around 165 flights on any given week from the UK to London Heathrow and the cheapest month to fly right now is July.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)

LOWEST

2 °C

AVG

11 °C

HIGHEST

24 °C

Rainfall (mm)

LOWEST

38.1 mm

AVG

52.5 mm

HIGHEST

66 mm

Key facts about London Heathrow

Currency

British pound

Language

English

Timezone

0 hrs behind GMT

How to get cheap flights from Portland Oregon to London Heathrow

Tips and advice from our flight experts

There are 11 airlines offering flights to London. The most direct route isn’t necessarily the cheapest – being flexible is key to finding the lowest airfare rates. For example, try searching by month to see the best time of the week to fly. The cheapest date is currently 22 / Jul / 2025.

Make sure you use the search options above to search for flights to other airports in London, not just London Heathrow. The more options you look at, the better your chance of finding a cheap deal. Just so you know, the flight typically takes 12 hrs 15 mins.

165 flights go to or via London every week. Cheap flights Currently, the cheapest price available is £605. The most popular airline is British Airways but do spend some time checking all your options – they aren’t necessarily the cheapest airline to book with.

During this peak season, hotel and holiday prices often increase too, so it's best to book early. Or you could keep your fingers crossed and hold out for a last-minute deal.