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Cheap flights from Portland to Belfast from $378

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 10/23. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
7:30 pm - 6:45 pm
PDX
-
BHD
15h 15m
1 stop
British Airways Logo
9:40 am - 5:40 pm
BHD
-
PDX
16h 00m
1 stop
$936British Airways
Thu, Oct 15 - Tue, Oct 20
British Airways Logo
7:30 am - 10:10 am
PDX
-
BHD
18h 40m
2 stops
British Airways Logo
8:25 pm - 5:40 pm
BHD
-
PDX
29h 15m
1 stop
$962British Airways
Thu, Oct 15 - Tue, Oct 20
American Airlines Logo
7:30 am - 10:10 am
PDX
-
BHD
18h 40m
2 stops
American Airlines Logo
12:40 pm - 11:59 pm
BHD
-
PDX
19h 19m
2 stops
$977American Airlines
Thu, Oct 15 - Tue, Oct 20
Multiple Airlines Logo
3:30 pm - 9:40 pm
PDX
-
BFS
22h 10m
2 stops
Multiple Airlines Logo
6:20 pm - 5:55 pm
BFS
-
PDX
31h 35m
3 stops
$1,028Multiple Airlines
Thu, Oct 15 - Tue, Oct 20
Multiple Airlines Logo
3:30 pm - 9:40 pm
PDX
-
BFS
22h 10m
3 stops
Multiple Airlines Logo
8:15 pm - 5:55 pm
BFS
-
PDX
29h 40m
3 stops
$1,035Multiple Airlines
Thu, Oct 15 - Tue, Oct 20
Multiple Airlines Logo
2:30 pm - 7:15 pm
PDX
-
BFS
20h 45m
2 stops
Multiple Airlines Logo
6:15 am - 9:31 am
BFS
-
PDX
35h 16m
3 stops
$1,091Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
Multiple Airlines Logo
7:00 pm - 11:15 pm
PDX
-
BFS
20h 15m
3 stops
Multiple Airlines Logo
6:15 am - 9:31 am
BFS
-
PDX
35h 16m
3 stops
$1,117Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
Multiple Airlines Logo
2:30 pm - 7:15 pm
PDX
-
BFS
20h 45m
2 stops
Multiple Airlines Logo
8:15 am - 11:50 am
BFS
-
PDX
35h 35m
2 stops
$1,142Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
British Airways Logo
8:00 am - 10:30 am
PDX
-
BHD
18h 30m
2 stops
British Airways Logo
5:35 pm - 3:50 pm
BHD
-
PDX
30h 15m
1 stop
$1,221British Airways
Fri, Dec 18 - Sun, Dec 27
British Airways Logo
8:00 am - 10:30 am
PDX
-
BHD
18h 30m
2 stops
British Airways Logo
5:35 pm - 3:50 pm
BHD
-
PDX
30h 15m
1 stop
$1,222British Airways
Fri, Dec 18 - Sun, Dec 27

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KLM flights from Portland to Belfast

Our best KLM deals on Portland to Belfast flight tickets
KLM
Jul 22
PDX3:30 pmPortland
17h 25m
2 stops
BHD4:55 pmBelfast City
Jul 24
BHD5:30 pmBelfast City
25h 40m
1 stop
PDX11:10 amPortland
$1,659
KLM
Jul 22
PDX3:00 pmPortland
17h 55m
2 stops
BHD4:55 pmBelfast City
Jul 24
BHD5:30 pmBelfast City
32h 05m
2 stops
PDX5:35 pmPortland
$1,669

British Airways flights from Portland to Belfast

Our best British Airways deals on Portland to Belfast flight tickets
British Airways
Oct 15
PDX7:30 pmPortland
15h 15m
1 stop
BHD6:45 pmBelfast City
Oct 20
BHD9:40 amBelfast City
16h 00m
1 stop
PDX5:40 pmPortland
$936
British Airways
Oct 15
PDX7:30 amPortland
18h 40m
2 stops
BHD10:10 amBelfast City
Oct 20
BHD8:25 pmBelfast City
29h 15m
1 stop
PDX5:40 pmPortland
$962
British Airways
Dec 18
PDX8:00 amPortland
18h 30m
2 stops
BHD10:30 amBelfast City
Dec 27
BHD5:35 pmBelfast City
30h 15m
1 stop
PDX3:50 pmPortland
$1,221

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 July 19, 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
Quickest round-trip

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Thu 10/15

7:30 pm-6:45 pm

1 stop15h 15m

Belfast City

Tue 10/20

9:40 am-5:40 pm

1 stop16h 00m

$936

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Thu 10/15

7:30 am-10:10 am

2 stops18h 40m

Belfast City

Tue 10/20

8:25 pm-5:40 pm

1 stop29h 15m

$962

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Thu 10/15

7:30 am-10:10 am

2 stops18h 40m

Belfast City

Tue 10/20

12:40 pm-11:59 pm

2 stops19h 19m

$977

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Thu 10/15

3:30 pm-9:40 pm

2 stops22h 10m

Belfast Intl

Tue 10/20

6:20 pm-5:55 pm

3 stops31h 35m

$1,028

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Thu 10/15

3:30 pm-9:40 pm

3 stops22h 10m

Belfast Intl

Tue 10/20

8:15 pm-5:55 pm

3 stops29h 40m

$1,035

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Wed 9/2

2:30 pm-7:15 pm

2 stops20h 45m

Belfast Intl

Wed 9/9

6:15 am-9:31 am

3 stops35h 16m

$1,091

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Wed 9/2

7:00 pm-11:15 pm

3 stops20h 15m

Belfast Intl

Wed 9/9

6:15 am-9:31 am

3 stops35h 16m

$1,117

PortlandBelfast

PDX - BFS

PDXBFS

Portland

Wed 9/2

2:30 pm-7:15 pm

2 stops20h 45m

Belfast Intl

Wed 9/9

8:15 am-11:50 am

2 stops35h 35m

$1,142

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 12/18

8:00 am-10:30 am

2 stops18h 30m

Belfast City

Sun 12/27

5:35 pm-3:50 pm

1 stop30h 15m

$1,221

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 12/18

8:00 am-10:30 am

2 stops18h 30m

Belfast City

Sun 12/27

5:35 pm-3:50 pm

1 stop30h 15m

$1,222

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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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 and American Airlines are the most popular carriers 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.
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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 many operators does momondo search for flights from Portland Airport to Belfast?

  • 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 $720Free CancellationRating
6.7
8,124 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