Find flights
When to book
FAQs

Cheap flights from London, ON to Portland from C$ 840

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/2. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — PDX
28 Nov — 5 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Portland

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) to Portland (PDX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 October 2025.

Round-trip from

C$ 840
Air Canada
  • Air Canada
  • 22/2-26/2
  • 4 total stops
  • 23h 11m total
  • London to Portland
Search Deals

Find flight deals from London to Portland

Enter your travel dates to find the best prices.

Cheapest flights from London to Portland
Explore the most affordable flight options available from London to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 October 2025.

Sat 13/125:10 a.m.YXU - PDX
2 stops16h 31mUnited Airlines
Sat 20/125:00 a.m.PDX - YXU
2 stops24h 46mUnited Airlines
Deal found 28/10C$ 1,288
Sat 13/129:25 a.m.YXU - PDX
3 stops33h 30mMultiple Airlines
Sat 20/127:08 p.m.PDX - YXU
3 stops32h 26mMultiple Airlines
Deal found 28/10C$ 4,239

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 29 October 2025.
Use the filters below to find and compare flights from London to Portland that are best for you.

Fly from

London

Fly to

Portland

Route

Depart

Return

Price

LondonPortland

YXU - PDX

YXUPDX

London

Sun 22/2

5:15 a.m.-2:40 p.m.

2 stops12h 25m

Portland

Thu 26/2

7:00 p.m.-8:46 a.m.

2 stops10h 46m

C$ 840

LondonPortland

YXU - PDX

YXUPDX

London

Sat 13/12

5:10 a.m.-6:41 p.m.

2 stops16h 31m

Portland

Sat 20/12

5:00 a.m.-8:46 a.m.

2 stops24h 46m

C$ 1,288

LondonPortland

YXU - PDX

YXUPDX

London

Sun 22/2

9:25 a.m.-10:59 p.m.

3 stops16h 34m

Portland

Thu 26/2

7:00 a.m.-9:21 p.m.

2 stops11h 21m

C$ 1,376

LondonPortland

YXU - PDX

YXUPDX

London

Sat 13/12

9:25 a.m.-3:55 p.m.

3 stops33h 30m

Portland

Sat 20/12

7:08 p.m.-6:34 a.m.

3 stops32h 26m

C$ 4,239

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/10

Best time to book a flight from London to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from London with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Portland

What is the cheapest month to book a flight from London, Ontario to Portland?

Currently, September is the cheapest month in which you can book a flight from London, Ontario to Portland (average of C$ 219). Flying from London, Ontario to Portland in March is currently the most expensive (average of C$ 419). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from London to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London, Ontario to Portland?

    A quick flight from London, Ontario to Portland can take about 12h 25m. Air Canada provides one of the quickest options available for as low as C$ 840. The distance between London, Ontario and Portland is about 3270 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from London to Portland that include hotel bookings?

    Yes. In addition to deals on London to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Portland.

  • Can I find deals for business class flights from London to Portland?

    Yes. Cheapflights offers flight deals from London to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London, Ontario to Portland?

    Currently, September is the cheapest month in which you can book a flight from London, Ontario to Portland (average of C$ 219). Flying from London, Ontario to Portland in March is currently the most expensive (average of C$ 419). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Vancouver
Seaside
Tillamook
Cannon Beach
Lincoln City

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Portland?

Cheapflights helps you search for flights from London to Portland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from London to Portland?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London to Portland.

Can Cheapflights find flights from London to Portland with no change fees?

Yes, we can. To see specific flights from London to Portland with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from London to Portland become cheaper?

Of course! You can now track prices for flights from London to Portland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.