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$392+ Cheap flights from Philadelphia (PHL) to Belfast

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BHD
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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Find flight deals from Philadelphia to Belfast

Cheapest flights from Philadelphia to Belfast
Explore the most affordable flight options available from Philadelphia to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.

This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:51 pmPHL - BHD
1 stop19h 24mAmerican Airlines
Sun 12/146:30 amBHD - PHL
1 stop11h 35mAmerican Airlines
Deal found 11/19$669
This FlightHub deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:51 pmPHL - BHD
2 stops14h 04mBritish Airways
Sun 12/146:30 amBHD - PHL
2 stops16h 44mBritish Airways
Deal found 11/19$808
This FlightHub deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/247:55 pmPHL - BHD
2 stops19h 20mBritish Airways
Wed 11/266:35 amBHD - PHL
1 stop14h 40mBritish Airways
Deal found 11/20$886
This Mytrip deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/246:15 amPHL - BHD
2 stops26h 20mMultiple Airlines
Wed 11/262:25 pmBHD - PHL
3 stops30h 40mMultiple Airlines
Deal found 11/20$1,684

Cheap flight deals from Philadelphia to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2025.

Round-trip from

$619
(American Airlines)

One-way from

$392
(FlightHub)

Popular in

June

Cheapest in

January

Average price

$790
From Philadelphia to Belfast
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One-way flight from Philadelphia to Belfast
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Highest demand for flights based on searches. 21% potential increase in price ($232 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia 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, Cheapflights users made 2,558,603 searches. Data last updated November 20, 2025.
Use the filters below to find and compare flights from Philadelphia to Belfast that are best for you.

Fly from

Philadelphia

Fly to

Belfast

Route

Depart

Return

Price

PhiladelphiaBelfast

PHL - BHD

PHLBHD

Philadelphia

Tue 2/3

7:50 pm-2:50 pm

1 stop14h 00m

Belfast City

Mon 2/9

2:40 pm-1:30 pm

1 stop27h 50m

$619

PhiladelphiaBelfast

PHL - BHD

PHLBHD

Philadelphia

Tue 2/3

9:31 pm-9:10 am

2 stops30h 39m

Belfast City

Mon 2/9

5:45 pm-3:35 pm

2 stops26h 50m

$645

PhiladelphiaBelfast

PHL - BHD

PHLBHD

Philadelphia

Mon 2/23

6:35 pm-10:40 am

1 stop11h 05m

Belfast City

Fri 2/27

6:45 am-4:15 pm

1 stop14h 30m

$648

PhiladelphiaBelfast

PHL - BHD

PHLBHD

Philadelphia

Tue 4/28

6:45 pm-1:00 pm

1 stop13h 15m

Belfast City

Sat 5/9

9:35 am-4:40 pm

1 stop12h 05m

$661

PhiladelphiaBelfast

PHL - BHD

PHLBHD

Philadelphia

Sun 12/7

7:51 pm-8:15 pm

1 stop19h 24m

Belfast City

Sun 12/14

6:30 am-1:05 pm

1 stop11h 35m

$669

PhiladelphiaBelfast

PHL - BHD

PHLBHD

Philadelphia

Fri 1/30

6:35 pm-10:30 am

1 stop10h 55m

Belfast City

Tue 2/3

3:05 pm-4:15 pm

1 stop30h 10m

$671

PhiladelphiaBelfast

PHL - BHD

PHLBHD

Philadelphia

Mon 2/23

6:23 pm-4:50 pm

2 stops17h 27m

Belfast City

Fri 2/27

6:30 am-8:42 pm

2 stops19h 12m

$684

PhiladelphiaBelfast

PHL - BHD

PHLBHD

Philadelphia

Mon 2/23

4:59 pm-4:50 pm

2 stops18h 51m

Belfast City

Fri 2/27

6:30 am-5:18 pm

2 stops15h 48m

$685

PhiladelphiaBelfast

PHL - BFS

PHLBFS

Philadelphia

Tue 2/3

7:50 am-8:15 pm

3 stops31h 25m

Belfast Intl

Mon 2/9

7:20 pm-2:47 pm

3 stops24h 27m

$1,124

PhiladelphiaBelfast

PHL - BFS

PHLBFS

Philadelphia

Tue 1/13

4:35 pm-6:50 pm

3 stops21h 15m

Belfast Intl

Fri 1/23

6:00 pm-2:47 pm

3 stops25h 47m

$1,132

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 19 results
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Best time to book a flight from Philadelphia to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Belfast

What is the cheapest month to book a flight from Philadelphia to Belfast?

Currently, January is the cheapest month in which you can book a flight from Philadelphia to Belfast (average of $621). Flying from Philadelphia to Belfast in February is currently the most expensive (average of $1,005). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast. Reviews last updated November 20, 2025.
Peruse reviews from past customers who have flown with British Airways from Philadelphia to Belfast to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,533 reviews

Boarding

6.9

Entertainment

6.4

Crew

7.6

Overall

6.7

Comfort

6.7

Food

6.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,533 reviews
British Airways
6.7
Okay
7,533 reviews

Boarding

6.9

Entertainment

6.4

Crew

7.6

Overall

6.7

Comfort

6.7

Food

6.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Philadelphia to Belfast?

    Most people fly from Philadelphia (PHL) if they book a flight from Philadelphia to Belfast. On average, Philadelphia has 0 outbound flights to Belfast per day from 1 airline. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

  • How long is the flight from Philadelphia to Belfast?

    For as low as $619, American Airlines can have you in Belfast from Philadelphia in 14h. Airlines will cover a distance of 3260 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Philadelphia to Belfast round-trip?

    Cheapflights users have booked flights from Philadelphia to Belfast round-trip from $678. This flight start at 22% lower than the current average price 3 months from now.

  • Can I find deals for flights from Philadelphia to Belfast that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Belfast.

  • Can I find deals for business class flights from Philadelphia to Belfast?

    Yes. Cheapflights offers flight deals from Philadelphia to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to Belfast?

    Currently, January is the cheapest month in which you can book a flight from Philadelphia to Belfast (average of $621). Flying from Philadelphia to Belfast in February is currently the most expensive (average of $1,005). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Philadelphia to Belfast

Discover the top airline that operate flights from Philadelphia to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$678Average$879FlexibilityNo cancel feeOn-time70%

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