Cheap flights from Portland, Maine to London from $319
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, Maine to London departing on 7/22. 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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JetBlue flights from Portland, Maine to London
Our best JetBlue deals on Portland, Maine to London flight tickets
Delta flights from Portland, Maine to London
Our best Delta deals on Portland, Maine to London flight tickets
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How to get the cheapest flight ticket from Portland, Maine to London
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, Maine and London?
What is the cheapest month to fly to London?
The cheapest month to fly to London from Portland, Maine is in October. Flight prices, which tend to average around $638, 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 Portland, Maine averaging around $712.
What is the cheapest day to depart on your flight to London?
The cheapest day to depart from Portland, Maine to London is on a Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $788. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $936. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.
What is the cheapest airline that flies from Portland to London?
JetBlue, Air Canada, and KLM are the most popular carriers operating from Portland to London
What airlines fly to London?
British Airways, Delta and Iberia are the top three most popular airlines that fly to London from Portland, Maine according to our data. British Airways is the first choice among our users, with 48% of people opting to fly with this airline when traveling to London. Keep in mind that there are 19 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.
When to book flights from Portland, Maine to London
Cheap Portland, Maine to London (PWM to LON) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to London
How far is Portland to London by plane?
London is 3183.1 mi away from Portland. Typically, this will take 9h 35m by plane in normal conditions.
When did momondo last update prices for flights from Portland Airport to London?
Prices for flights from Portland Airport to London refresh daily.
How many operators does momondo search for flights from Portland Airport to London?
There are 3 operators available for flights from Portland Airport to London as of June 2025.
How old do you have to be to fly from Portland Airport to London?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to London.
What documentation or ID do you need to fly to London?
The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Portland, Maine to London?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland, Maine to London is Delta (35% of total bookings). The next most popular airlines are JetBlue (34%) and United Airlines (31%).
Best airlines flying from Portland, Maine to London
Compare and see reviews for airlines that fly from Portland, Maine to London with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $586 | Free Cancellation | Rating 7.3 2,922 reviews | |||
| PriceFrom $665 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $825 | Free Cancellation | Rating 8.0 7,963 reviews |
Traveling to a place near London?
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Why should I use momondo to find a flight deal from Portland to London?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to London for you.
Can I find flights from Portland to London with flexible booking policies on momondo?
Yes. All flights to London from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.
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?
Yes. momondo can track prices for Portland to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.