Cheap flights from Oregon to London from $221

The cheapest month to fly to London from Oregon is in October. Flight prices, which tend to average around $645, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Oregon averaging around $658.

The cheapest day to depart from Oregon to London is on a Monday. Travelers who choose to depart for London on a Monday will often find tickets for as low as $832. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $979. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Oregon in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $728 when looking at flights departing in the afternoon. Flights to London are more costly in the evening, with an average ticket price of $901. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Portland to London Heathrow for the best Oregon - London flight prices

You are more likely to see cheaper flights to London from Oregon when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $837 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Oregon for as low as $734 on momondo.

There are 4 cabin classes available to choose from on Oregon to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

British Airways, Icelandair, and United Airlines are the most popular carriers operating from Oregon to London

British Airways, American Airlines and Icelandair are the top three most popular airlines that fly to London from Oregon according to our data. British Airways is the first choice among our users, with 61% of people opting to fly with this airline when traveling to London. Keep in mind that there are 13 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

The number of flights available between Oregon and London is 2 per week as of March 2026. The most frequent departure day is Mon, with 50% of weekly flights leaving on this day.

If you’re flying from a popular airport in Oregon, such as Portland or Redmond, and flying into London, then you can expect flight times to average 9h 30m and 13h 10m, respectively.