$417 Find Cheap Flights from Philadelphia to Belfast - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Belfast departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$888
British Airways
Sun 11/8Wed 11/11
PHL - BHD • 1 stop
Cheapest one-way
$417
Multiple Airlines
Fri 9/25
PHL - BHD • 3 stops
Top airlines
Cheapest • from $888 (round-trip)
Best reviews • 6.7 score
Airline reviews
Airline reviews
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+1
Airline reviews
Airline reviews
+1
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Flight Deals

Cheap Flights from Philadelphia to Belfast (PHL-BHD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Belfast that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Belfast

Sun, Nov 8 - Wed, Nov 11
British Airways Logo
6:35 pm - 1:55 pm
PHL
-
BHD
14h 20m
1 stop
British Airways Logo
5:40 pm - 4:15 pm
BHD
-
PHL
27h 35m
1 stop
$888British Airways
Thu, Sep 10 - Thu, Sep 17
Multiple Airlines Logo
5:40 pm - 11:05 pm
PHL
-
BFS
24h 25m
3 stops
Multiple Airlines Logo
12:45 pm - 6:55 pm
BFS
-
PHL
35h 10m
3 stops
$916Multiple Airlines
Thu, Sep 10 - Thu, Sep 17
Multiple Airlines Logo
5:40 pm - 11:05 pm
PHL
-
BFS
24h 25m
3 stops
Multiple Airlines Logo
12:45 pm - 6:55 pm
BFS
-
PHL
35h 10m
3 stops
$918Multiple Airlines
Wed, Nov 11 - Fri, Nov 13
British Airways Logo
6:35 pm - 10:15 am
PHL
-
BHD
10h 40m
1 stop
British Airways Logo
7:35 pm - 4:15 pm
BHD
-
PHL
25h 40m
1 stop
$938British Airways
Wed, Sep 23 - Wed, Mar 17
British Airways Logo
6:45 pm - 1:35 pm
PHL
-
BHD
13h 50m
1 stop
British Airways Logo
9:15 am - 5:15 pm
BHD
-
PHL
12h 00m
1 stop
$945British Airways
Mon, Sep 28 - Mon, Oct 5
British Airways Logo
6:45 pm - 12:55 pm
PHL
-
BHD
13h 10m
1 stop
British Airways Logo
7:35 pm - 4:40 pm
BHD
-
PHL
26h 05m
1 stop
$948British Airways
Wed, Sep 23 - Wed, Mar 17
British Airways Logo
6:45 pm - 1:35 pm
PHL
-
BHD
13h 50m
1 stop
British Airways Logo
12:25 pm - 11:40 am
BHD
-
PHL
27h 15m
2 stops
$948British Airways
Fri, Nov 20 - Fri, Nov 27
British Airways Logo
6:35 pm - 10:30 am
PHL
-
BHD
10h 55m
1 stop
British Airways Logo
8:45 am - 4:15 pm
BHD
-
PHL
12h 30m
1 stop
$950British Airways
Wed, Sep 23 - Wed, Mar 17
American Airlines Logo
5:30 pm - 12:00 pm
PHL
-
BHD
13h 30m
2 stops
American Airlines Logo
6:35 am - 8:05 pm
BHD
-
PHL
17h 30m
2 stops
$960American Airlines
Fri, Nov 20 - Fri, Nov 27
American Airlines Logo
4:17 pm - 10:30 am
PHL
-
BHD
13h 13m
2 stops
American Airlines Logo
6:45 am - 1:50 pm
BHD
-
PHL
12h 05m
1 stop
$974American Airlines
Booking Insights

KAYAK's insights & trends for Philadelphia to Belfast flights

Get data-powered insights and trends into flights from Philadelphia to Belfast to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Philadelphia to Belfast?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Philadelphia to Belfast were found on British Airways ($888) and American Airlines ($960).

Good to know

Cheapest flight

$417
Flight from Philadelphia to Belfast City Airport

When to book flights from Philadelphia to Belfast

Are your dates flexible? Find out the best times to travel from Philadelphia to Belfast based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Belfast

  • What is the cheapest flight from Philadelphia to Belfast?

    In the last 5 days, the lowest price for a flight from Philadelphia to Belfast was $417 for a one-way ticket and $888 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Belfast?

    Yes, you’ll need a passport to travel to Belfast from Philadelphia.

  • Which aircraft models fly most regularly from Philadelphia to Belfast?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Belfast?

    oneworld is the only airline alliance operating flights between Philadelphia and Belfast.

  • How does KAYAK find such low prices on flights from Philadelphia to Belfast?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Belfast.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Belfast?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Belfast?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Belfast with an airline and back to Philadelphia with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Belfast?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Belfast from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Philadelphia to Belfast

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Belfast. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Belfast? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.7
British AirwaysOverall score based on 8127 reviews
7.7Crew
6.8Comfort
6.5Entertainment
7.0Boarding
6.4Food
Airline reviews

Boarding process was chaotic. Confusion over Boarding gates: gate 55 or gate 56 ???. Unnecessary standing in long lines to board. Better to call out Boarding groups one at a time and everyone else to sit. Airline only has 2 Boarding groups 1-3 and 4-9. That causes over crowding and chaos

8.0 ExcellentMohit, May 2026
PHL - LHR
Read more British Airways reviews

Boarding process was chaotic. Confusion over Boarding gates: gate 55 or gate 56 ???. Unnecessary standing in long lines to board. Better to call out Boarding groups one at a time and everyone else to sit. Airline only has 2 Boarding groups 1-3 and 4-9. That causes over crowding and chaos

The flight was ok. The seats are so small. The free wifi for members was not an option on this flight. The one flight attendant, older woman with straight white/grey hair, was very rude. The gentleman next to me asked about the wifi since he was a member as well. He stated, accurately, that the option to enter the idea number was not available. Her response was, "I don't know what to tell you" and walked away from him. The rest of the staff was wonderful. I asked another flight attendant about the wifi, she said the free wifi was not enabled on that flight (true or not- at least she was friendly). It was also pretty dirty. When I opened the tray table it had mushed crumbs and there was a dirty used pair of ear buds in my seat pocket. Lastly the air vent above my head was working but stuck so I was unable to move it to face me when it got warm. I fly American often but this really was not a great flight.

Someone switched seats in business class so they could sit together and we were left apart (3). Very disappointing. Staff did nothing

I have always been pleased with their service. Would not change a thing

Three major things that led to my low rating, 1. Internet wasn't available for the whole time, and 2. TV became available way into flight, after numerous system reboots, and 3. Food is not good at all.

My flight was late. We stayed in aircraft one hour 😩

We were on flight for 7 hrs and there was no WiFi. Not really easy to use any of our electronics. Def not ideal

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

Overall, terrific service, accommodations, and experience. Only reason comfort was rated lower was because it was difficult to keep a comfortable sleeping position for the overnight flight, but I also had an economy seat.

Flight landed on time but there was a delay for over a half hour unloading us. I missed my connecting flight to Milan and had to wait 2 hours for the next flight. I was supposed to take a bus to Turin from there and do business with a bank. By the time I was able to get to Turin I arrived when the banks were closed and Friday was a religious holiday which they were closed. This ruined my whole point of the trip as I return to the USA tomorrow without getting buisness done. I also lost out on the money I paid for my original bus ticket and had to buy another.

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

Information on your arrival and departure airports