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Cheap flights from Portland to the United Kingdom from $259

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 1/19. 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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0 bags

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Cheap round-trip flights

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Icelandair Logo
2:45 pm - 9:55 amPDX-GLA
11h 10m1 stop
Icelandair Logo
12:35 pm - 5:00 pmGLA-PDX
12h 25m1 stop
$510Icelandair
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Mon, Nov 24 - Fri, Dec 5
Multiple Airlines Logo
2:45 pm - 10:30 pmPDX-EDI
23h 45m2 stops
Multiple Airlines Logo
10:40 pm - 5:00 pmEDI-PDX
26h 20m2 stops
$516Multiple Airlines
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Thu, Dec 4 - Thu, Dec 11
British Airways Logo
5:45 pm - 2:15 pmPDX-EDI
12h 30m1 stop
British Airways Logo
10:25 am - 3:55 pmEDI-PDX
13h 30m1 stop
$551British Airways
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Wed, Feb 25 - Wed, Mar 4
British Airways Logo
5:45 pm - 3:15 pmPDX-EDI
13h 30m1 stop
British Airways Logo
7:00 pm - 3:55 pmEDI-PDX
28h 55m1 stop
$557British Airways
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Sun, Feb 22 - Tue, Mar 3
American Airlines Logo
5:45 pm - 5:05 pmPDX-EDI
15h 20m1 stop
American Airlines Logo
8:45 am - 10:00 pmEDI-PDX
21h 15m2 stops
$565American Airlines
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Wed, Feb 25 - Wed, Mar 4
American Airlines Logo
2:05 pm - 3:10 pmPDX-EDI
17h 05m2 stops
American Airlines Logo
8:45 am - 10:00 pmEDI-PDX
21h 15m2 stops
$570American Airlines
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Wed, Feb 25 - Wed, Mar 4
Delta Logo
7:22 pm - 9:45 amPDX-EDI
30h 23m2 stops
Delta Logo
11:45 am - 8:40 pmEDI-PDX
16h 55m1 stop
$572Delta
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Mon, Nov 24 - Fri, Dec 5
Delta Logo
5:30 am - 10:40 amPDX-EDI
21h 10m2 stops
Delta Logo
11:45 am - 8:40 pmEDI-PDX
16h 55m1 stop
$576Delta
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Tue, Nov 25 - Fri, Dec 5
Iberia Logo
5:45 pm - 11:20 amPDX-LHR
9h 35mnonstop
Iberia Logo
8:20 am - 9:24 pmLHR-PDX
21h 04m1 stop
$592Iberia
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Sun, Dec 7 - Tue, Dec 16
Iberia Logo
5:45 pm - 11:20 amPDX-LHR
9h 35mnonstop
Iberia Logo
8:20 am - 10:46 pmLHR-PDX
21h 26m1 stop
$618Iberia
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Mon, Feb 23 - Thu, Mar 19

Virgin Atlantic flights from Portland to United Kingdom

Our best Virgin Atlantic deals on Portland to United Kingdom flight tickets
Virgin Atlantic
Jan 14
PDX6:00 amPortland
17h 05m
1 stop
LHR7:05 amLondon Heathrow
Jan 29
LHR11:05 amLondon Heathrow
14h 30m
1 stop
PDX5:35 pmPortland
$564
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Virgin Atlantic
Jan 14
PDX6:00 amPortland
17h 05m
1 stop
LHR7:05 amLondon Heathrow
Jan 29
LHR11:05 amLondon Heathrow
14h 30m
1 stop
PDX5:35 pmPortland
$565
Find similar
Virgin Atlantic
Dec 3
PDX1:45 pmPortland
12h 15m
1 stop
LHR10:00 amLondon Heathrow
Dec 10
LHR6:30 amLondon Heathrow
12h 55m
1 stop
PDX11:25 amPortland
$581
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Iberia flights from Portland to United Kingdom

Our best Iberia deals on Portland to United Kingdom flight tickets
Iberia
Dec 7
PDX5:45 pmPortland
9h 35m
LHR11:20 amLondon Heathrow
Dec 16
LHR8:20 amLondon Heathrow
21h 04m
1 stop
PDX9:24 pmPortland
$592
Find similar
Iberia
Feb 23
PDX5:45 pmPortland
9h 35m
LHR11:20 amLondon Heathrow
Mar 19
LHR8:20 amLondon Heathrow
21h 26m
1 stop
PDX10:46 pmPortland
$618
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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 November 6, 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

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Mon 11/24

2:45 pm-9:55 am

1 stop11h 10m

Glasgow Intl

Fri 12/5

12:35 pm-5:00 pm

1 stop12h 25m

$510

PortlandEdinburgh

PDX - EDI

PDXEDI

Portland

Thu 12/4

2:45 pm-10:30 pm

2 stops23h 45m

Edinburgh Turnhouse

Thu 12/11

10:40 pm-5:00 pm

2 stops26h 20m

$516

PortlandEdinburgh

PDX - EDI

PDXEDI

Portland

Wed 2/25

5:45 pm-2:15 pm

1 stop12h 30m

Edinburgh Turnhouse

Wed 3/4

10:25 am-3:55 pm

1 stop13h 30m

$551

PortlandEdinburgh

PDX - EDI

PDXEDI

Portland

Sun 2/22

5:45 pm-3:15 pm

1 stop13h 30m

Edinburgh Turnhouse

Tue 3/3

7:00 pm-3:55 pm

1 stop28h 55m

$557

PortlandEdinburgh

PDX - EDI

PDXEDI

Portland

Wed 2/25

5:45 pm-5:05 pm

1 stop15h 20m

Edinburgh Turnhouse

Wed 3/4

8:45 am-10:00 pm

2 stops21h 15m

$565

PortlandEdinburgh

PDX - EDI

PDXEDI

Portland

Wed 2/25

2:05 pm-3:10 pm

2 stops17h 05m

Edinburgh Turnhouse

Wed 3/4

8:45 am-10:00 pm

2 stops21h 15m

$570

PortlandEdinburgh

PDX - EDI

PDXEDI

Portland

Mon 11/24

7:22 pm-9:45 am

2 stops30h 23m

Edinburgh Turnhouse

Fri 12/5

11:45 am-8:40 pm

1 stop16h 55m

$572

PortlandEdinburgh

PDX - EDI

PDXEDI

Portland

Tue 11/25

5:30 am-10:40 am

2 stops21h 10m

Edinburgh Turnhouse

Fri 12/5

11:45 am-8:40 pm

1 stop16h 55m

$576

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 12/7

5:45 pm-11:20 am

Nonstop9h 35m

London Heathrow

Tue 12/16

8:20 am-9:24 pm

1 stop21h 04m

$592

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 2/23

5:45 pm-11:20 am

Nonstop9h 35m

London Heathrow

Thu 3/19

8:20 am-10:46 pm

1 stop21h 26m

$618

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $656. 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 $660.

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 Sunday when prices can be found for as low as $858. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $1,038.

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 $807. 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 $937. 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 $735 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

$501

Fastest flight time

9h 30m

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 $501. The best round-trip flight deal from Portland to United Kingdom found on momondo in the last 72 hours is $707.
The fastest flight from Portland to United Kingdom takes 9h 30m
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
7.7
1,405 reviews
Search KLM flights
IcelandairPriceFrom $493Free CancellationRating
7.1
572 reviews
Search Icelandair flights
DeltaPriceFrom $554Free CancellationRating
7.9
8,001 reviews
Search Delta flights
Virgin AtlanticPriceFrom $567Free CancellationRating
7.5
672 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $577Free CancellationRating
7.0
3,007 reviews
Search Iberia flights
American AirlinesPriceFrom $583Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
British AirwaysPriceFrom $593Free CancellationRating
6.7
7,500 reviews
Search British Airways flights
Alaska AirlinesPriceFrom $600Free CancellationRating
8.0
11,246 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $619Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights
FinnairPriceFrom $641Free CancellationRating
7.6
1,335 reviews
Search Finnair 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.
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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 $320
Flights to Manchesterfrom $359
Flights to Edinburghfrom $406
Flights to Glasgowfrom $401
Flights to Birminghamfrom $404
Flights to Newcastle upon Tynefrom $464
Flights to Belfastfrom $509
Flights to Bristolfrom $431
Flights to Invernessfrom $418
Flights to Liverpoolfrom $460
Flights to Aberdeenfrom $501
Flights to Leedsfrom $504