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Cheap flights from Philadelphia to Belfast from $672

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Belfast departing on 2/16. 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 Philadelphia to Belfast

Cheap round-trip flights

Multiple Airlines Logo
3:30 pm - 5:00 pmPHL-BFS
20h 30m2 stops
Multiple Airlines Logo
11:00 am - 3:49 pmBFS-PHL
32h 49m2 stops
$672Multiple Airlines
Find Deal
Mon, Feb 16 - Sun, Mar 15
Multiple Airlines Logo
7:30 am - 10:25 pmPHL-BFS
33h 55m3 stops
Multiple Airlines Logo
9:50 am - 8:57 pmBFS-PHL
40h 07m3 stops
$994Multiple Airlines
Find Deal
Thu, Oct 16 - Thu, Oct 23
Multiple Airlines Logo
5:35 pm - 4:15 pmPHL-BFS
17h 40m2 stops
Multiple Airlines Logo
9:50 am - 8:57 pmBFS-PHL
40h 07m3 stops
$1,052Multiple Airlines
Find Deal
Thu, Oct 16 - Thu, Oct 23
Multiple Airlines Logo
5:35 pm - 4:15 pmPHL-BFS
17h 40m2 stops
Multiple Airlines Logo
7:10 am - 7:00 pmBFS-PHL
16h 50m2 stops
$1,169Multiple Airlines
Find Deal
Thu, Oct 16 - Thu, Oct 23
Multiple Airlines Logo
6:30 pm - 4:35 pmPHL-BFS
18h 05m2 stops
Multiple Airlines Logo
9:30 pm - 4:00 pmBFS-PHL
23h 30m2 stops
$1,332Multiple Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7
Multiple Airlines Logo
4:35 pm - 3:10 pmPHL-BFS
18h 35m3 stops
Multiple Airlines Logo
9:30 pm - 4:00 pmBFS-PHL
23h 30m2 stops
$1,381Multiple Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Belfast Intl Airport 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 September 17, 2025.
Use the filters below to find and compare flights from Philadelphia to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaBelfast

PHL - BFS

PHLBFS

Philadelphia

Mon 2/16

3:30 pm-5:00 pm

2 stops20h 30m

Belfast Intl

Sun 3/15

11:00 am-3:49 pm

2 stops32h 49m

$672

PhiladelphiaBelfast

PHL - BFS

PHLBFS

Philadelphia

Thu 10/16

7:30 am-10:25 pm

3 stops33h 55m

Belfast Intl

Thu 10/23

9:50 am-8:57 pm

3 stops40h 07m

$994

PhiladelphiaBelfast

PHL - BFS

PHLBFS

Philadelphia

Thu 10/16

5:35 pm-4:15 pm

2 stops17h 40m

Belfast Intl

Thu 10/23

9:50 am-8:57 pm

3 stops40h 07m

$1,052

PhiladelphiaBelfast

PHL - BFS

PHLBFS

Philadelphia

Thu 10/16

5:35 pm-4:15 pm

2 stops17h 40m

Belfast Intl

Thu 10/23

7:10 am-7:00 pm

2 stops16h 50m

$1,169

PhiladelphiaBelfast

PHL - BFS

PHLBFS

Philadelphia

Fri 10/31

6:30 pm-4:35 pm

2 stops18h 05m

Belfast Intl

Fri 11/7

9:30 pm-4:00 pm

2 stops23h 30m

$1,332

PhiladelphiaBelfast

PHL - BFS

PHLBFS

Philadelphia

Fri 10/31

4:35 pm-3:10 pm

3 stops18h 35m

Belfast Intl

Fri 11/7

9:30 pm-4:00 pm

2 stops23h 30m

$1,381

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Belfast from

How to get the cheapest flight ticket from Philadelphia to Belfast Intl Airport

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 day to depart on your flight to Belfast Intl Airport?

The cheapest day to depart on your flight to Belfast Intl Airport is on a Wednesday when prices can be found for as low as $736. This is often the case because there is less demand to fly during this day of the week. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Belfast Intl Airport for around $1,214.

What is the cheapest time of day to depart on your flight to Belfast Intl Airport?

In the evening is the cheapest time of day to fly from Philadelphia to Belfast Intl Airport when you can find flight prices for as low as $788. Flying to Belfast Intl Airport in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Belfast Intl Airport is in the afternoon when prices are around $849.

When to book flights from Philadelphia to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Philadelphia to Belfast Intl Airport (PHL to BFS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Belfast Intl Airport

Direct flights

None
There are no direct flights from Philadelphia to Belfast Intl Airport. There are no popular flight routes from Philadelphia to Belfast Intl Airport.
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  • How far is Philadelphia to Belfast Intl by plane?

    A flight from Philadelphia to Belfast Intl will travel around 3238.7 mi. By plane, this route typically takes 17h 40m.

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

    Prices for flights from Philadelphia Airport to Belfast Intl Airport are updated daily.

  • How many operators does momondo search for flights from Philadelphia Airport to Belfast Intl Airport?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Philadelphia Airport to Belfast Intl Airport.

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

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

  • What is the most popular airline from Philadelphia to Belfast Intl Airport?

Best airlines flying from Philadelphia to Belfast Intl Airport

Compare and see reviews for airlines that fly from Philadelphia to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $685Free CancellationRating
6.7
7,367 reviews
Search British Airways flights

Traveling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Newry
Armagh
Cookstown
Dungannon

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to Belfast. momondo saves you time and could save you money on your trip.

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

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

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

Once you have performed a search for Philadelphia to Belfast flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Belfast from Philadelphia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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