Cheap Flights from Portland to London from $292

Frequently Asked Questions

• What are the cheapest flights from Portland to London (PWM-LON)?

  Based on Trip.com data, Jetblue Airways offers one-way fares as low as $292 on Cheapest nonstop routes (e.g. PWM to LGW on Sat, Aug 15), while Virgin Atlantic offers Cheapest nonstop round-trips from $887 departing on Tue, Aug 25 and returning on Tue, Sep 1.

• When is the best time to book flights from Portland to London?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Portland to London is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from Portland to London?

  To find best deals on flights from Portland to London, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sat, Aug 15, with one-way flights priced at just $292.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Jetblue Airways.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for London travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Portland (PWM) to London (LON) the cheapest?

  The cheapest months to fly from Portland to London is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Portland to London on?

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Portland to London on August 13, 2026 with Jetblue Airways, with prices starting at $292.

• Is there any time difference between Portland and London?

  The time difference between London and Portland is 5h.

• How do I change or cancel my ticket from Portland to London?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Portland to London?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Portland to London is $534. Fares vary by travel date, airline and availability.

• How do I book flights from Portland to London on Trip.com?

  Enter Portland and London, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.