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Cheap flights from Portland to Belfast from $333

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 Belfast departing on 9/29. 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

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Find the cheapest flights from Portland to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:30 pm - 11:20 pm
PDX
-
BFS
23h 50m
3 stops
Multiple Airlines Logo
8:15 pm - 11:45 am
BFS
-
PDX
47h 30m
3 stops
$878Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
British Airways Logo
7:30 pm - 6:45 pm
PDX
-
BHD
15h 15m
1 stop
British Airways Logo
4:15 pm - 5:40 pm
BHD
-
PDX
33h 25m
1 stop
$955British Airways
Sun, Sep 20 - Sat, Oct 3
Multiple Airlines Logo
2:30 pm - 7:15 pm
PDX
-
BFS
20h 45m
2 stops
Multiple Airlines Logo
6:05 am - 11:45 am
BFS
-
PDX
37h 40m
3 stops
$958Multiple Airlines
Wed, Jun 3 - Wed, Jun 10
Multiple Airlines Logo
3:30 pm - 7:40 pm
PDX
-
BFS
20h 10m
2 stops
Multiple Airlines Logo
7:00 am - 1:50 pm
BFS
-
PDX
38h 50m
3 stops
$975Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
7:30 pm - 6:45 pm
PDX
-
BHD
15h 15m
1 stop
Multiple Airlines Logo
7:05 am - 9:57 pm
BHD
-
PDX
22h 52m
2 stops
$977Multiple Airlines
Sun, Sep 20 - Sat, Oct 3
British Airways Logo
12:32 pm - 10:30 am
PDX
-
BHD
37h 58m
2 stops
British Airways Logo
7:05 pm - 5:40 pm
BHD
-
PDX
30h 35m
1 stop
$1,004British Airways
Sat, Sep 19 - Sat, Oct 3
Multiple Airlines Logo
7:05 pm - 11:15 pm
PDX
-
BFS
20h 10m
3 stops
Multiple Airlines Logo
6:05 am - 11:45 am
BFS
-
PDX
37h 40m
3 stops
$1,029Multiple Airlines
Wed, Jun 3 - Wed, Jun 10
KLM Logo
7:00 am - 9:20 am
PDX
-
BHD
18h 20m
2 stops
KLM Logo
5:30 pm - 11:10 am
BHD
-
PDX
25h 40m
1 stop
$1,059KLM
Tue, Jul 14 - Tue, Jul 21
Virgin Atlantic Logo
1:05 pm - 4:55 pm
PDX
-
BHD
19h 50m
1 stop
Virgin Atlantic Logo
5:30 pm - 11:10 am
BHD
-
PDX
25h 40m
1 stop
$1,073Virgin Atlantic
Fri, May 1 - Tue, Jun 2
KLM Logo
1:32 pm - 4:55 pm
PDX
-
BHD
19h 23m
2 stops
KLM Logo
9:50 am - 11:10 am
BHD
-
PDX
33h 20m
1 stop
$1,078KLM
Fri, May 1 - Tue, Jun 2

British Airways flights from Portland to Belfast

Our best British Airways deals on Portland to Belfast flight tickets
British Airways
Sep 20
PDX7:30 pmPortland
15h 15m
1 stop
BHD6:45 pmBelfast City
Oct 3
BHD4:15 pmBelfast City
33h 25m
1 stop
PDX5:40 pmPortland
$955
British Airways
Sep 19
PDX12:32 pmPortland
37h 58m
2 stops
BHD10:30 amBelfast City
Oct 3
BHD7:05 pmBelfast City
30h 35m
1 stop
PDX5:40 pmPortland
$1,004
British Airways
Sep 19
PDX7:30 pmPortland
14h 45m
1 stop
BHD6:15 pmBelfast City
Oct 3
BHD7:05 pmBelfast City
30h 35m
1 stop
PDX5:40 pmPortland
$1,029

Virgin Atlantic flights from Portland to Belfast

Our best Virgin Atlantic deals on Portland to Belfast flight tickets
Virgin Atlantic
May 1
PDX1:05 pmPortland
19h 50m
1 stop
BHD4:55 pmBelfast City
Jun 2
BHD5:30 pmBelfast City
25h 40m
1 stop
PDX11:10 amPortland
$1,073
Virgin Atlantic
Jul 13
PDX1:05 pmPortland
12h 15m
1 stop
BHD9:20 amBelfast City
Jul 21
BHD5:30 pmBelfast City
25h 40m
1 stop
PDX11:10 amPortland
$1,173

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Belfast 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 April 20, 2026.
Use the filters below to find and compare flights from Portland to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Tue 6/2

3:30 pm-11:20 pm

3 stops23h 50m

Belfast Intl

Tue 6/9

8:15 pm-11:45 am

3 stops47h 30m

$878

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sun 9/20

7:30 pm-6:45 pm

1 stop15h 15m

Belfast City

Sat 10/3

4:15 pm-5:40 pm

1 stop33h 25m

$955

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Wed 6/3

2:30 pm-7:15 pm

2 stops20h 45m

Belfast Intl

Wed 6/10

6:05 am-11:45 am

3 stops37h 40m

$958

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Tue 6/2

3:30 pm-7:40 pm

2 stops20h 10m

Belfast Intl

Tue 6/9

7:00 am-1:50 pm

3 stops38h 50m

$975
Quickest round-trip

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sun 9/20

7:30 pm-6:45 pm

1 stop15h 15m

Belfast City

Sat 10/3

7:05 am-9:57 pm

2 stops22h 52m

$977

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 9/19

12:32 pm-10:30 am

2 stops37h 58m

Belfast City

Sat 10/3

7:05 pm-5:40 pm

1 stop30h 35m

$1,004

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Wed 6/3

7:05 pm-11:15 pm

3 stops20h 10m

Belfast Intl

Wed 6/10

6:05 am-11:45 am

3 stops37h 40m

$1,029

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Tue 7/14

7:00 am-9:20 am

2 stops18h 20m

Belfast City

Tue 7/21

5:30 pm-11:10 am

1 stop25h 40m

$1,059

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 5/1

1:05 pm-4:55 pm

1 stop19h 50m

Belfast City

Tue 6/2

5:30 pm-11:10 am

1 stop25h 40m

$1,073

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 5/1

1:32 pm-4:55 pm

2 stops19h 23m

Belfast City

Tue 6/2

9:50 am-11:10 am

1 stop33h 20m

$1,078

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 Belfast from

How to get the cheapest flight ticket from Portland to Belfast

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 airline that flies from Portland to Belfast?

British Airways is the most popular carrier operating from Portland to Belfast

Cheap Portland to Belfast flight deals and tips

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

Fastest flight time

12h 30m

Direct flights

None
The fastest flight from Portland to Belfast takes 12h 30m
There are no direct flights from Portland to Belfast. There are no popular flight routes from Portland to Belfast.
Search flight deals

Frequently asked questions about flying from Portland to Belfast

  • How far is Portland to Belfast by plane?

    The straight-line distance from Portland to Belfast is 4590.7 mi. Typically, this will take 12h 30m by plane in normal conditions.

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

    Prices for flights from Portland Airport to Belfast are updated daily.

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

    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 Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The travel and health documents you'll need for your trip to Belfast 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 Belfast. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Portland to Belfast

Compare and see reviews for airlines that fly from Portland to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $647Free CancellationRating
6.7
7,895 reviews
Search British Airways flights

Why use momondo?

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

It is quick and easy to find Portland to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.

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

Yes. momondo enables you to select and highlight flights to Belfast from Portland with this policy.

How can momondo help me find flights from Portland to Belfast?

momondo helps you find the best flight between Portland and Belfast by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Belfast 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.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport