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Cheap flights from Portland to the United Kingdom from £154

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 3/10. 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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Find the cheapest flights from Portland to the United Kingdom

Cheap return flights

Delta Logo
13:25 - 12:45PDX-INV
15h 20m1 stop
Delta Logo
13:15 - 10:38INV-PDX
29h 23m2 stops
£372Delta
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Sun, 2 Nov - Fri, 14 Nov
Icelandair Logo
15:20 - 13:25PDX-GLA
14h 05m1 stop
Icelandair Logo
14:20 - 17:55GLA-PDX
11h 35m1 stop
£380Icelandair
Find Deal
Mon, 13 Oct - Thu, 23 Oct
Logo
15:20 - 23:10PDX-EDI
23h 50m2 stops
Logo
07:25 - 18:00EDI-PDX
17h 35m2 stops
£388
Find Deal
Wed, 22 Oct - Wed, 29 Oct
Logo
15:29 - 19:00PDX-INV
19h 31m2 stops
Logo
11:25 - 23:24INV-PDX
19h 59m2 stops
£394
Find Deal
Sun, 2 Nov - Fri, 14 Nov
Icelandair Logo
15:20 - 13:25PDX-GLA
14h 05m1 stop
Icelandair Logo
12:35 - 18:00GLA-PDX
12h 25m1 stop
£397Icelandair
Find Deal
Wed, 22 Oct - Wed, 29 Oct
British Airways Logo
17:45 - 11:20PDX-LHR
9h 35mdirect
British Airways Logo
13:45 - 15:55LHR-PDX
10h 10mdirect
£402British Airways
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Sun, 2 Nov - Wed, 19 Nov
British Airways Logo
11:43 - 10:25PDX-LHR
14h 42m1 stop
British Airways Logo
15:00 - 23:23LHR-PDX
16h 23m1 stop
£408British Airways
Find Deal
Tue, 18 Nov - Tue, 16 Dec
Virgin Atlantic Logo
13:15 - 09:30PDX-LCY
12h 15m1 stop
Virgin Atlantic Logo
17:05 - 12:25LCY-PDX
26h 20m1 stop
£439Virgin Atlantic
Find Deal
Mon, 20 Oct - Thu, 30 Oct
Virgin Atlantic Logo
15:19 - 17:20PDX-LCY
18h 01m2 stops
Virgin Atlantic Logo
17:50 - 11:25LCY-PDX
25h 35m1 stop
£442Virgin Atlantic
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Tue, 14 Oct - Tue, 11 Nov
Iberia Logo
17:45 - 22:30PDX-GLA
20h 45m1 stop
Iberia Logo
20:20 - 15:55GLA-PDX
27h 35m1 stop
£584Iberia
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Fri, 14 Nov - Thu, 20 Nov

United Airlines flights from Portland to United Kingdom

Our best United Airlines deals on Portland to United Kingdom flight tickets
United Airlines
27 Sept
PDX07:02Portland
39h 53m
2 stops
LHR06:55London Heathrow
10 Oct
LHR14:10London Heathrow
27h 10m
1 stop
PDX09:20Portland
£401
Find similar
United Airlines
6 Oct
PDX16:07Portland
12h 13m
1 stop
LHR12:20London Heathrow
22 Oct
LHR14:10London Heathrow
16h 51m
1 stop
PDX23:01Portland
£403
Find similar
United Airlines
3 Oct
PDX19:35Portland
54h 05m
2 stops
LHR09:40London Heathrow
16 Oct
LHR14:10London Heathrow
32h 36m
1 stop
PDX14:46Portland
£404
Find similar

Delta flights from Portland to United Kingdom

Our best Delta deals on Portland to United Kingdom flight tickets
Delta
2 Nov
PDX13:25Portland
15h 20m
1 stop
INV12:45Inverness
14 Nov
INV13:15Inverness
29h 23m
2 stops
PDX10:38Portland
£372
Find similar
Delta
22 Sept
PDX13:25Portland
14h 00m
1 stop
LHR11:25London Heathrow
9 Oct
LHR06:15London Heathrow
18h 30m
2 stops
PDX16:45Portland
£407
Find similar
Delta
30 Sept
PDX13:40Portland
13h 40m
1 stop
LHR11:20London Heathrow
8 Oct
LHR08:40London Heathrow
18h 39m
2 stops
PDX19:19Portland
£408
Find similar

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 16 September 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 2/11

13:25-12:45

1 stop15h 20m

Inverness

Fri 14/11

13:15-10:38

2 stops29h 23m

£372

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Mon 13/10

15:20-13:25

1 stop14h 05m

Glasgow Intl

Thu 23/10

14:20-17:55

1 stop11h 35m

£380

PortlandEdinburgh

PDX - EDI

PDXEDI

Portland

Wed 22/10

15:20-23:10

2 stops23h 50m

Edinburgh Turnhouse

Wed 29/10

07:25-18:00

2 stops17h 35m

£388

PortlandInverness

PDX - INV

PDXINV

Portland

Sun 2/11

15:29-19:00

2 stops19h 31m

Inverness

Fri 14/11

11:25-23:24

2 stops19h 59m

£394

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Wed 22/10

15:20-13:25

1 stop14h 05m

Glasgow Intl

Wed 29/10

12:35-18:00

1 stop12h 25m

£397

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sun 2/11

17:45-11:20

Nonstop9h 35m

London Heathrow

Wed 19/11

13:45-15:55

Nonstop10h 10m

£402

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 18/11

11:43-10:25

1 stop14h 42m

London Heathrow

Tue 16/12

15:00-23:23

1 stop16h 23m

£408

PortlandLondon

PDX - LCY

PDXLCY

Portland

Mon 20/10

13:15-09:30

1 stop12h 15m

London City

Thu 30/10

17:05-12:25

1 stop26h 20m

£439

PortlandLondon

PDX - LCY

PDXLCY

Portland

Tue 14/10

15:19-17:20

2 stops18h 01m

London City

Tue 11/11

17:50-11:25

1 stop25h 35m

£442

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Fri 14/11

17:45-22:30

1 stop20h 45m

Glasgow Intl

Thu 20/11

20:20-15:55

1 stop27h 35m

£584

Flights are sorted by cheapest return 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?

The cheapest month to fly to United Kingdom from Portland is in October. Flight prices, which tend to average around £479, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from Portland during the month November is also very affordable. Most momondo users find prices during this month for around £498.

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 Friday. Travellers who choose to depart for United Kingdom on a Friday will often find tickets for as low as £453. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Portland to United Kingdom for around £654.

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

The cheapest time of day to fly to United Kingdom is in the evening when flights can be purchased for as low as £513. Try not to purchase tickets at midday because they tend to be around £682. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 £616 when searching weeks before you fly. 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 £546 on momondo.

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

There are 3 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 12% 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

£375

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 £375. The best return flight deal from Portland to United Kingdom found on momondo in the last 72 hours is £402.
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 are updated 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?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 travel and health documents you'll need for your trip to United Kingdom may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at United Kingdom. It is always advisable to seek advice from your airline or a trusted 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
British AirwaysPriceFrom £379Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £429Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
IcelandairPriceFrom £434Free CancellationRating
7.0
544 reviews
Search Icelandair flights
IberiaPriceFrom £448Free CancellationRating
7.0
2,924 reviews
Search Iberia flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to United Kingdom . Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Portland to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to United Kingdom?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to United Kingdom.

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

Of course. momondo tracks the price of Portland to United Kingdom flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
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