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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 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 round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
6:40 am - 2:25 pm
PDX
-
INV
23h 45m
2 stops
British Airways Logo
7:20 am - 5:40 pm
INV
-
PDX
18h 20m
1 stop
$498British Airways
Tue, Mar 31 - Thu, Apr 9
British Airways Logo
5:40 am - 2:25 pm
PDX
-
INV
24h 45m
2 stops
British Airways Logo
7:20 am - 10:42 pm
INV
-
PDX
23h 22m
2 stops
$501British Airways
Tue, Mar 31 - Thu, Apr 9
Icelandair Logo
3:45 pm - 10:00 am
PDX
-
EDI
11h 15m
1 stop
Icelandair Logo
12:20 pm - 6:00 pm
EDI
-
PDX
12h 40m
1 stop
$505Icelandair
Mon, Mar 16 - Fri, Mar 20
British Airways Logo
7:30 pm - 9:35 pm
PDX
-
INV
18h 05m
1 stop
British Airways Logo
7:20 am - 5:40 pm
INV
-
PDX
18h 20m
1 stop
$512British Airways
Tue, Mar 31 - Thu, Apr 9
Icelandair Logo
3:30 pm - 1:25 pm
PDX
-
GLA
13h 55m
1 stop
Icelandair Logo
2:20 pm - 6:00 pm
GLA
-
PDX
11h 40m
1 stop
$514Icelandair
Thu, Apr 2 - Fri, Apr 10
Delta Logo
1:25 pm - 12:45 pm
PDX
-
INV
15h 20m
1 stop
Delta Logo
1:15 pm - 6:15 pm
INV
-
PDX
36h 00m
2 stops
$524Delta
Sun, Mar 1 - Wed, Mar 11
Delta Logo
6:00 am - 12:45 pm
PDX
-
INV
22h 45m
2 stops
Delta Logo
1:15 pm - 5:39 pm
INV
-
PDX
35h 24m
2 stops
$528Delta
Sun, Mar 1 - Wed, Mar 11
American Airlines Logo
1:14 pm - 2:40 pm
PDX
-
GLA
17h 26m
2 stops
American Airlines Logo
10:50 am - 10:49 pm
GLA
-
PDX
19h 59m
2 stops
$645American Airlines
Tue, Apr 14 - Wed, Apr 22
Virgin Atlantic Logo
2:25 pm - 7:35 pm
PDX
-
LCY
22h 10m
1 stop
Virgin Atlantic Logo
8:15 pm - 11:10 am
LCY
-
PDX
22h 55m
1 stop
$686Virgin Atlantic
Mon, Mar 23 - Tue, Mar 31
Virgin Atlantic Logo
1:25 pm - 4:35 pm
PDX
-
LCY
19h 10m
1 stop
Virgin Atlantic Logo
5:05 pm - 11:25 am
LCY
-
PDX
26h 20m
1 stop
$687Virgin Atlantic
Mon, Feb 23 - Tue, Mar 3

Lufthansa flights from Portland to United Kingdom

Our best Lufthansa deals on Portland to United Kingdom flight tickets
Lufthansa
Mar 2
PDX9:50 amPortland
18h 00m
1 stop
LHR11:50 amLondon Heathrow
Mar 18
LHR11:10 amLondon Heathrow
20h 25m
2 stops
PDX12:35 amPortland
$601
Lufthansa
Mar 3
PDX9:50 amPortland
18h 00m
1 stop
LHR11:50 amLondon Heathrow
Mar 12
LHR8:15 pmLondon Heathrow
31h 55m
2 stops
PDX9:10 pmPortland
$610
Lufthansa
Apr 28
PDX3:15 pmPortland
14h 05m
1 stop
LHR1:20 pmLondon Heathrow
May 12
LHR9:00 amLondon Heathrow
23h 33m
2 stops
PDX12:33 amPortland
$616

United Airlines flights from Portland to United Kingdom

Our best United Airlines deals on Portland to United Kingdom flight tickets
United Airlines
Mar 18
PDX11:10 pmPortland
27h 20m
1 stop
EDI9:30 amEdinburgh Turnhouse
Mar 23
EDI11:30 amEdinburgh Turnhouse
17h 28m
1 stop
PDX9:58 pmPortland
$627
United Airlines
Mar 9
PDX3:15 pmPortland
13h 35m
1 stop
LHR11:50 amLondon Heathrow
Mar 19
LHR6:50 amLondon Heathrow
22h 08m
2 stops
PDX9:58 pmPortland
$630
United Airlines
Mar 1
PDX3:50 pmPortland
31h 35m
1 stop
LHR7:25 amLondon Heathrow
Mar 10
LHR2:30 pmLondon Heathrow
25h 45m
1 stop
PDX9:15 amPortland
$636

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 February 3, 2026.
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

Tue 3/31

6:40 am-2:25 pm

2 stops23h 45m

Inverness

Thu 4/9

7:20 am-5:40 pm

1 stop18h 20m

$498

PortlandInverness

PDX - INV

PDXINV

Portland

Tue 3/31

5:40 am-2:25 pm

2 stops24h 45m

Inverness

Thu 4/9

7:20 am-10:42 pm

2 stops23h 22m

$501

PortlandEdinburgh

PDX - EDI

PDXEDI

Portland

Mon 3/16

3:45 pm-10:00 am

1 stop11h 15m

Edinburgh Turnhouse

Fri 3/20

12:20 pm-6:00 pm

1 stop12h 40m

$505

PortlandInverness

PDX - INV

PDXINV

Portland

Tue 3/31

7:30 pm-9:35 pm

1 stop18h 05m

Inverness

Thu 4/9

7:20 am-5:40 pm

1 stop18h 20m

$512

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Thu 4/2

3:30 pm-1:25 pm

1 stop13h 55m

Glasgow Intl

Fri 4/10

2:20 pm-6:00 pm

1 stop11h 40m

$514

PortlandInverness

PDX - INV

PDXINV

Portland

Sun 3/1

1:25 pm-12:45 pm

1 stop15h 20m

Inverness

Wed 3/11

1:15 pm-6:15 pm

2 stops36h 00m

$524

PortlandInverness

PDX - INV

PDXINV

Portland

Sun 3/1

6:00 am-12:45 pm

2 stops22h 45m

Inverness

Wed 3/11

1:15 pm-5:39 pm

2 stops35h 24m

$528

PortlandGlasgow

PDX - GLA

PDXGLA

Portland

Tue 4/14

1:14 pm-2:40 pm

2 stops17h 26m

Glasgow Intl

Wed 4/22

10:50 am-10:49 pm

2 stops19h 59m

$645

PortlandLondon

PDX - LCY

PDXLCY

Portland

Mon 3/23

2:25 pm-7:35 pm

1 stop22h 10m

London City

Tue 3/31

8:15 pm-11:10 am

1 stop22h 55m

$686

PortlandLondon

PDX - LCY

PDXLCY

Portland

Mon 2/23

1:25 pm-4:35 pm

1 stop19h 10m

London City

Tue 3/3

5:05 pm-11:25 am

1 stop26h 20m

$687

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 $647. 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 $659.

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 $837. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $977.

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 $720. 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 $907. 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 $836 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 $748 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 25% 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

$370

Fastest flight time

9h 30m

Direct flights

Every day

Airports in United Kingdom

1,286 airports
The best one-way flight to United Kingdom from Portland in the past 72 hours is $370. The best round-trip flight deal from Portland to United Kingdom found on momondo in the last 72 hours is $658.
The fastest flight from Portland to United Kingdom takes 9h 30m
Direct flights go from Portland to United Kingdom every day.
There are 1,286 airports in United Kingdom. From Portland there are direct flights to 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
1,448 reviews
Search KLM flights
IcelandairPriceFrom $486Free CancellationRating
7.1
606 reviews
Search Icelandair flights
British AirwaysPriceFrom $495Free CancellationRating
6.7
7,712 reviews
Search British Airways flights
DeltaPriceFrom $551Free CancellationRating
7.9
8,139 reviews
Search Delta flights
Virgin AtlanticPriceFrom $558Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $574Free CancellationRating
7.0
3,103 reviews
Search Iberia flights
Alaska AirlinesPriceFrom $582Free CancellationRating
8.0
11,835 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $583Free CancellationRating
7.2
11,218 reviews
Search American Airlines flights
United AirlinesPriceFrom $607Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
FinnairPriceFrom $641Free CancellationRating
7.6
1,357 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

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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
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Flights to Liverpoolfrom $393
Flights to Aberdeenfrom $492
Flights to Leedsfrom $451