Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Portland to the United Kingdom from $209

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 to the United Kingdom departing on 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Portland to the United Kingdom

Cheap round-trip flights

Delta Logo
1:25 pm - 12:45 pmPDX-INV
15h 20m1 stop
Delta Logo
1:15 pm - 10:38 amINV-PDX
29h 23m2 stops
$506Delta
Find Deal
Sun, Nov 2 - Fri, Nov 14
Icelandair Logo
3:20 pm - 1:25 pmPDX-GLA
14h 05m1 stop
Icelandair Logo
2:20 pm - 5:55 pmGLA-PDX
11h 35m1 stop
$517Icelandair
Find Deal
Mon, Oct 13 - Thu, Oct 23
British Airways Logo
7:25 pm - 1:00 pmPDX-LHR
9h 35mnonstop
British Airways Logo
8:20 am - 5:04 pmLHR-PDX
16h 44m1 stop
$551British Airways
Find Deal
Tue, Oct 14 - Wed, Oct 22
American Airlines Logo
7:25 pm - 1:00 pmPDX-LHR
9h 35mnonstop
American Airlines Logo
2:25 pm - 11:06 pmLHR-PDX
16h 41m1 stop
$554American Airlines
Find Deal
Mon, Oct 6 - Wed, Oct 22
British Airways Logo
11:43 am - 10:25 amPDX-LHR
14h 42m1 stop
British Airways Logo
3:00 pm - 11:23 pmLHR-PDX
16h 23m1 stop
$555British Airways
Find Deal
Tue, Nov 18 - Tue, Dec 16
Virgin Atlantic Logo
6:00 am - 7:05 amPDX-LHR
17h 05m1 stop
Virgin Atlantic Logo
6:30 am - 11:25 amLHR-PDX
12h 55m1 stop
$599Virgin Atlantic
Find Deal
Wed, Nov 19 - Fri, Nov 28
Virgin Atlantic Logo
3:19 pm - 5:20 pmPDX-LCY
18h 01m2 stops
Virgin Atlantic Logo
5:10 pm - 11:20 amLCY-PDX
26h 10m1 stop
$601Virgin Atlantic
Find Deal
Tue, Oct 14 - Tue, Oct 21
American Airlines Logo
1:26 pm - 3:10 pmPDX-GLA
17h 44m2 stops
American Airlines Logo
12:45 pm - 12:50 amGLA-PDX
20h 05m2 stops
$628American Airlines
Find Deal
Fri, Nov 14 - Thu, Nov 20
Iberia Logo
5:45 pm - 10:30 pmPDX-GLA
20h 45m1 stop
Iberia Logo
8:20 pm - 3:55 pmGLA-PDX
27h 35m1 stop
$794Iberia
Find Deal
Fri, Nov 14 - Thu, Nov 20
Iberia Logo
5:45 pm - 4:35 pmPDX-GLA
14h 50m1 stop
Iberia Logo
3:20 pm - 9:23 pmGLA-PDX
38h 03m2 stops
$955Iberia
Find Deal
Mon, Nov 3 - Tue, Nov 11

Air Canada flights from Portland to United Kingdom

Our best Air Canada deals on Portland to United Kingdom flight tickets
Air Canada
Oct 14
PDX6:15 amPortland
21h 35m
2 stops
LHR11:50 amLondon Heathrow
Oct 29
LHR2:30 pmLondon Heathrow
31h 15m
1 stop
PDX2:45 pmPortland
$546
Find similar
Air Canada
Nov 16
PDX9:50 amPortland
18h 00m
1 stop
LHR11:50 amLondon Heathrow
Dec 5
LHR1:25 pmLondon Heathrow
27h 50m
2 stops
PDX9:15 amPortland
$547
Find similar
Air Canada
Sep 23
PDX10:51 amPortland
16h 59m
2 stops
LHR11:50 amLondon Heathrow
Oct 14
LHR10:15 amLondon Heathrow
20h 46m
2 stops
PDX11:01 pmPortland
$557
Find similar

British Airways flights from Portland to United Kingdom

Our best British Airways deals on Portland to United Kingdom flight tickets
British Airways
Oct 14
PDX7:25 pmPortland
9h 35m
LHR1:00 pmLondon Heathrow
Oct 22
LHR8:20 amLondon Heathrow
16h 44m
1 stop
PDX5:04 pmPortland
$551
Find similar
British Airways
Nov 18
PDX11:43 amPortland
14h 42m
1 stop
LHR10:25 amLondon Heathrow
Dec 16
LHR3:00 pmLondon Heathrow
16h 23m
1 stop
PDX11:23 pmPortland
$555
Find similar
British Airways
Oct 8
PDX2:05 pmPortland
16h 20m
1 stop
LHR2:25 pmLondon Heathrow
Oct 22
LHR3:40 pmLondon Heathrow
9h 55m
PDX5:35 pmPortland
$557
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland to United Kingdom 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, momondo users made 832,500 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Portland to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandInverness

PDX - INV

PDXINV

Portland

Sun 11/2

1:25 pm-12:45 pm

1 stop15h 20m

Inverness

Fri 11/14

1:15 pm-10:38 am

2 stops29h 23m

$506

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Mon 10/13

3:20 pm-1:25 pm

1 stop14h 05m

Glasgow Intl

Thu 10/23

2:20 pm-5:55 pm

1 stop11h 35m

$517

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 10/14

7:25 pm-1:00 pm

Nonstop9h 35m

London Heathrow

Wed 10/22

8:20 am-5:04 pm

1 stop16h 44m

$551

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 10/6

7:25 pm-1:00 pm

Nonstop9h 35m

London Heathrow

Wed 10/22

2:25 pm-11:06 pm

1 stop16h 41m

$554

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 11/18

11:43 am-10:25 am

1 stop14h 42m

London Heathrow

Tue 12/16

3:00 pm-11:23 pm

1 stop16h 23m

$555

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 11/19

6:00 am-7:05 am

1 stop17h 05m

London Heathrow

Fri 11/28

6:30 am-11:25 am

1 stop12h 55m

$599

PortlandLondon

PDX - LCY

PDXLCY

Portland

Tue 10/14

3:19 pm-5:20 pm

2 stops18h 01m

London City

Tue 10/21

5:10 pm-11:20 am

1 stop26h 10m

$601

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Fri 11/14

1:26 pm-3:10 pm

2 stops17h 44m

Glasgow Intl

Thu 11/20

12:45 pm-12:50 am

2 stops20h 05m

$628

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Fri 11/14

5:45 pm-10:30 pm

1 stop20h 45m

Glasgow Intl

Thu 11/20

8:20 pm-3:55 pm

1 stop27h 35m

$794

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Mon 11/3

5:45 pm-4:35 pm

1 stop14h 50m

Glasgow Intl

Tue 11/11

3:20 pm-9:23 pm

2 stops38h 03m

$955

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to the United Kingdom from

How to get the cheapest flight ticket from Portland to United Kingdom

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 cheapest month to fly to United Kingdom?

In general, October is the cheapest month to fly from Portland to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $651. If you aren’t able to travel to United Kingdom during the month of October, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $677.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Portland to United Kingdom is on a Tuesday when prices can be found for as low as $855. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $1,067.

What is the cheapest time of day to depart on your flight to United Kingdom?

According to our data, the cheapest time of day to fly to United Kingdom is in the afternoon. momondo users have found flights departing from Portland to United Kingdom in the afternoon for as low as $811. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the evening, with an average ticket price of $940. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Portland to United Kingdom flight route?

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

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around $838 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Portland for as low as $742 on momondo.

What cabin class options are available on Portland to United Kingdom flights?

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

Can stopping save me money on Portland to United Kingdom flights?

You could potentially save up to 27% on your flight if you consider stops on a Portland to United Kingdom flight.

Cheap Portland to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to United Kingdom

Best Price Found

$490

Fastest flight time

9h 35m

Direct flights

Every day

Airports in United Kingdom

1 airport
The best one-way flight to United Kingdom from Portland in the past 72 hours is $490. The best round-trip flight deal from Portland to United Kingdom found on momondo in the last 72 hours is $673.
The fastest flight from Portland to United Kingdom takes 9h 35m
Direct flights go from Portland to United Kingdom every day.
There is 1 airport near United Kingdom: London Heathrow (LHR)
Search flight deals

  • When did momondo last update prices for flights from Portland Airport to United Kingdom?

    Prices for flights from Portland Airport to United Kingdom refresh daily.

  • How many operators does momondo search for flights from Portland Airport to United Kingdom?

  • How old do you have to be to fly from Portland Airport to United Kingdom?

    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 United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Portland to United Kingdom?

Best airlines flying from Portland to United Kingdom

Compare and see reviews for airlines that fly from Portland to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $451Free CancellationRating
7.8
1,385 reviews
Search KLM flights
IcelandairPriceFrom $490Free CancellationRating
7.0
544 reviews
Search Icelandair flights
DeltaPriceFrom $554Free CancellationRating
7.9
7,954 reviews
Search Delta flights
Virgin AtlanticPriceFrom $567Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $578Free CancellationRating
7.0
2,924 reviews
Search Iberia flights
American AirlinesPriceFrom $583Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $595Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
United AirlinesPriceFrom $623Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
FinnairPriceFrom $641Free CancellationRating
7.6
1,323 reviews
Search Finnair flights
Air CanadaPriceFrom $704Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to United Kingdom?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to United Kingdom from Portland.

Can I find flights from Portland to United Kingdom with flexible booking policies on momondo?

Yes. All flights to United Kingdom 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 United Kingdom?

momondo provides multiple filters to help you find the best flight to United Kingdom from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Portland to United Kingdom right now. Can momondo alert me if prices change?

Price alerts on flights to United Kingdom from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your United Kingdom trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 10/15
Wed 10/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to Londonfrom $318
Flights to Manchesterfrom $392
Flights to Edinburghfrom $393
Flights to Glasgowfrom $390
Flights to Birminghamfrom $390
Flights to Newcastle upon Tynefrom $429
Flights to Belfastfrom $477
Flights to Bristolfrom $462
Flights to Invernessfrom $445
Flights to Liverpoolfrom $426
Flights to Aberdeenfrom $485
Flights to Leedsfrom $426