$584 Find Cheap Flights from Portland to the United Kingdom

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to the United Kingdom departing on 2/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to the United Kingdom

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to the United Kingdom

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
London
London1 stop$584
Edinburgh
Edinburgh1 stop$817
Manchester
Manchester2 stops$775
London
London1 stop$584
Edinburgh
Edinburgh1 stop$817
Manchester
Manchester2 stops$775

Book Cheap Portland to the United Kingdom Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to the United Kingdom that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to the United Kingdom

Fri, Feb 6 - Sun, Feb 8
Delta Logo
6:17 am - 6:20 amPWM-LHR
19h 03m1 stop
Delta Logo
6:20 am - 12:20 amLHR-PWM
23h 00m2 stops
$584Delta
Find Deal
Mon, Dec 1 - Sun, Dec 14
KLM Logo
4:53 pm - 8:45 amPWM-LHR
10h 52m1 stop
KLM Logo
10:45 am - 10:23 pmLHR-PWM
16h 38m1 stop
$622KLM
Find Deal
Fri, Feb 6 - Sun, Feb 8
Virgin Atlantic Logo
5:30 am - 7:55 amPWM-LHR
21h 25m2 stops
Virgin Atlantic Logo
8:40 am - 10:29 pmLHR-PWM
18h 49m2 stops
$632Virgin Atlantic
Find Deal
Fri, Feb 6 - Sun, Feb 8
KLM Logo
2:35 pm - 8:05 amPWM-LHR
12h 30m1 stop
KLM Logo
4:35 pm - 12:20 amLHR-PWM
12h 45m1 stop
$656KLM
Find Deal
Mon, Dec 1 - Sun, Dec 14
Air Canada Logo
7:44 pm - 7:10 amPWM-LHR
30h 26m2 stops
Air Canada Logo
1:25 pm - 6:42 pmLHR-PWM
34h 17m2 stops
$674Air Canada
Find Deal
Tue, Nov 18 - Tue, Nov 25
United Airlines Logo
6:00 am - 9:20 pmPWM-LHR
10h 20m1 stop
United Airlines Logo
9:10 am - 5:58 pmLHR-PWM
13h 48m1 stop
$747United Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
United Airlines Logo
9:34 am - 10:20 amPWM-MAN
20h 46m2 stops
United Airlines Logo
7:00 am - 7:24 pmMAN-PWM
17h 24m2 stops
$775United Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
Air Canada Logo
11:17 am - 8:30 amPWM-LHR
17h 13m2 stops
Air Canada Logo
9:30 am - 9:27 pmLHR-PWM
16h 57m2 stops
$810Air Canada
Find Deal
Fri, Mar 27 - Tue, Mar 31
Virgin Atlantic Logo
5:30 am - 10:30 amPWM-MAN
25h 00m1 stop
Virgin Atlantic Logo
11:00 am - 9:59 pmMAN-PWM
15h 59m1 stop
$832Virgin Atlantic
Find Deal
Mon, Apr 20 - Sun, Apr 26
JetBlue Logo
2:20 pm - 9:30 amPWM-LHR
14h 10m1 stop
JetBlue Logo
11:55 am - 1:23 pmLHR-PWM
30h 28m1 stop
$851JetBlue
Find Deal
Booking Insights

KAYAK's insights & trends for Portland to the United Kingdom flights

Get data-powered insights and trends into flights from Portland to the United Kingdom to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Portland to the United Kingdom?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to the United Kingdom is October, when tickets cost $638 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,208 and $1,188 respectively.

Good to know

Low seasonDecember
Cheapest flight$584
Best time to beat the crowds but there is an average 32% increase in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Portland to London

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Portland to the United Kingdom?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to the United Kingdom.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to the United Kingdom?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to the United Kingdom is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Portland to the United Kingdom with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to the United Kingdom?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to the United Kingdom?

    The cheapest time of day to fly to the United Kingdom is generally in the afternoon, when round-trip flights cost $827 on average. On average, there is no price difference when choosing to fly in the morning or the evening on this flight route. The most expensive time of day to fly to the United Kingdom is generally in the evening, which is peak travel time and where the average cost of a ticket is $869.

Reviews of the top 3 airlines serving from Portland to the United Kingdom

 
Need help choosing which airline to fly with from Portland to the United Kingdom? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8001 reviews
7.3Food
8.5Crew
7.9Comfort
8.2Boarding
7.9Entertainment
Airline reviews

I truly love flying with Delta. They have always treated me with the upmost respect

10.0 ExcellentMAYRA, Nov 2025JFK - MIA
Read more Delta reviews

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Checking In on JetBlue site was impossible. It hung up on REAL ID. Even my Global Entry did not help. Luckily, on Kayak site it was a breeze. Entire flight the temperature was COLD! Otherwise the crew was great!

The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.

Very pleasant flight attendants. Gate crew rather loud chatting with each other.

Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.

Plane was in bad shape. TV’s and WiFi didn’t work. Plane need a refresh. Not enough room for bags.

There was a fowl odour coming from the lavatory the entire flight

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

I don’t usually fly budget airlines or airlines in the United States. It was as good as any other airline. The seats are comfortable and the airline attendants are not rude & surly. Very nice flight (s).

No internet on a flight over three hours in this age is criminal. Staff inattentive and dismissive

They have the most inexperienced / rude flight staff I’ve encountered

Everything you need to know for your flight from Portland to the United Kingdom

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.